vae emulsion

In the field of building waterproofing, polymer cement waterproof coatings have always been a market favorite due to their environmental friendliness, high film strength, and good compatibility with damp substrates. As the core raw material of JS coatings, the performance of the polymer emulsion directly determines the success or failure of the final waterproof layer. Today, we will delve into DiverSol 779P (VAE CW40-705) and DiverSol 777 (VAE CW40-705). By interpreting the data of these two products, which conform to GB/T 23445-2009 Type II standard, we will analyze the key technical aspects of high-performance waterproof emulsions in practical applications.   1. Technical Characteristics and Performance Highlights of Two Special VAE Emulsion Both DiverSol 777 and 779P are plasticizer-free VAE Emulsion (Vinyl Acetate–ethylene Copolymer Emulsion) , presenting as a milky white water-based system. They maintain relatively consistent key indicators such as solid content, viscosity, pH, and glass transition temperature (Tg), which helps to maintain stable performance in different application scenarios.     ♠ Industry Significance in Performance: Low Tg for Flexibility: Suitable for Type II waterproof coatings requiring low-temperature flexibility and crack resistance; the film exhibits good elongation after drying, adapting to slight substrate displacement and temperature changes. Excellent Compatibility with Cement Systems: The PVA protective colloid improves the dispersibility of the emulsion when mixed with cement and fillers; significantly improves the sag resistance and thixotropic properties of cement paste. Plasticizer-Free Formulation: Reduces VOC emissions and enhances environmental friendliness; more stable in the formulation, preventing performance degradation due to migration. Adaptability to Wet Environments: Forms a film on damp, cold substrates without chalking or early cracking.   2. Application Logic and Formulation Synergy in Waterproof Building Coatings 2.1 Mechanism of Action in Waterproof Coating Systems ♣ VAE emulsions play three roles in cement-based waterproof coatings: Providing flexibility: filling the "brittleness gap" of the cement system; Improving water resistance: forming a continuous polymer film in the pores after cement hydration; Promoting workability: improving thixotropy, reducing sagging, and improving the smoothness of application.   The low Tg characteristics of DiverSol 777 and 779P enable the polymer phase to form a continuous film structure at room temperature or even low temperature, thereby effectively improving the coating density. It forms an interpenetrating network (IPN) structure with the cement hydrate, enhancing adhesion and crack resistance, which are fundamental properties that Type II waterproof coatings must meet.   2.2 Key Performance Improvement Points in Waterproofing Systems (1) Improved Flexibility and Crack Resistance The addition rate of the emulsion is usually 10–20% of the total mass of the system. The DiverSol series can achieve the following within this range: Increased tensile strength Increased elongation Buffering ability for mortar shrinkage cracks (2) Anti-sagging and workability 779P emphasizes "good anti-sagging performance" in its description. Its thixotropy is suitable for: Facade construction Multi-corner structures such as bathrooms Stability control of thick coating operations (3) Durability and water resistance The polyvinyl alcohol protective colloid system after film formation can make the emulsion evenly distributed in the cement pores: Reduce water absorption Improve freeze-thaw cycle stability Delay the alkaline erosion of cement paste (4) Strong substrate adaptability Both emulsions can be applied under "low temperature or high humidity conditions", especially suitable for: Rainy season construction areas Underground structures Brick and concrete building bases that are prone to dampness   3. Engineering value, storage and transportation and production operation points   3.1 Engineering value manifestation In building engineering applications, waterproofing systems usually face challenges such as diverse substrates, complex construction environments and high durability requirements. The selection of a suitable VAE emulsion not only affects product test indicators but also long-term operational stability. The value of DiverSol 777 and 779P to engineering projects is mainly reflected in: (1) Improved overall construction efficiency Good thixotropy, easier application, and reduced rework Strong adaptability to wet substrates, eliminating the need for prolonged drying of the substrate (2) Effectively extends the service life of the waterproofing system The continuous polymer phase reduces the path of moisture intrusion Strong crack resistance, especially suitable for areas with slight structural movement, such as bathroom corners and roof panel joints (3) Wide range of applications Waterproofing for bathrooms, kitchens, and balconies\Basement and foundation protection layers Roof coatings Flexible waterproofing primers for interior and exterior walls Premixed waterproofing slurry for engineering projects (4) Compliant with environmental trends Plasticizer-free, water-based, and low-residue, helping the product pass environmental building material certification or meet VOC requirements   3.2 Storage Specifications (1) Storage Environment and Shelf Life Temperature Control: The emulsion must be stored in a sheltered area and must not be frozen. Storage temperature should be strictly controlled between 5°C and 40°C. Once VAE emulsions freeze, they are usually irreversible after demulsification, resulting in direct economic losses. Shelf Life Management: Under suitable conditions and in their original, unopened packaging, DiverSol 779P and 777 have a minimum shelf life of 6 months. It is recommended that factories implement a "first-in, first-out" (FIFO) inventory management principle. (2) Pretreatment and Usage Precautions Filtration and Stirring: During transportation and storage, soft lumps or a skin may form on the surface of the emulsion, a common physical phenomenon in polymer dispersions. Therefore, filtration is strongly recommended before use. Especially if the product has been stored for a long time, thorough stirring is essential before use to ensure homogeneity. Preservative Treatment: Preservatives are added to the product at the factory to prevent microbial contamination. However, once the container is opened or transferred to another storage tank, the original preservative system may be insufficient to resist new microbial attacks. If the product cannot be used immediately, the user must take appropriate precautions (such as sealing for storage) or add a suitable preservative after transfer. (3) Safety Precautions Although the DiverSol series is considered safe for its intended use, as a chemical feedstock, it contains trace amounts of residual vinyl acetate monomer (controlled below 0.5%). Therefore, adequate ventilation should be maintained in the operating area. Operators should wear protective clothing, gloves, and goggles. In case of skin or eye splashes, rinse immediately with water.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com

Adhesives are essential for almost every item we use in our daily lives, from furniture and flooring to packaging. Traditional adhesives, such as solvent-based glues and bone glue, have long dominated the market. However, with growing environmental awareness and technological advancements, a new adhesive, VAE Emulsion (Vinyl Acetate–ethylene Copolymer Emulsion), is gradually entering our market.     I. Introduction to VAE Emulsions Vinyl acetate and ethylene copolymer emulsions typically contain 0-30% vinyl groups. Ethylene acts as an internal plasticizer. A higher vinyl content results in a lower glass transition temperature, a softer resin, and greater flexibility. Ethylene also has low polarity and excellent water resistance. Previously, only polyvinyl acetate emulsions were available, but these had poor water resistance and flexibility, and also exhibited poor adhesion to non-polar or less polar materials such as polyethylene and polyvinyl chloride. VAE emulsions are used in wood glue, paper packaging adhesives, architectural coatings, mortar modification (e.g., waterproofing), and even plastic film lamination.   2. Advantages of VAE Emulsions in Architectural Coatings Low VOC Low-VOC latex paints using VAE emulsions (such as VAE Emulsion CW 40-600) provide a high-quality interior environment with excellent workability and good color development. In Europe, over 90% of zero-/low-VOC interior wall paints use VAE emulsions. VAE emulsions are the primary binder used in cigarette adhesives. Compared to acrylic emulsions, vinyl acetate emulsions contain fewer benzenes and aromatic hydrocarbons. Furthermore, they do not require the addition of coalescing agents. Acrylic emulsions, on the other hand, lack the ability to achieve both film-forming and scrub resistance, necessitating the addition of coalescing agents to ensure a high Tg. Vinyl acetate, on the other hand, is softened by water, eliminating the need for coalescing agents.   Weatherability The presence of vinyl monomers in VAE emulsions increases the polymer's hydrophobicity, resulting in excellent water resistance in the resulting coating. This is crucial for outdoor coatings, as it prevents rain from eroding the coating, leading to blistering, cracking, and flaking. Chalking Resistance: Chalking is the phenomenon of paint decomposing due to aging under the influence of ultraviolet light and oxygen, resulting in the formation of white powder on the surface. VAE emulsions have excellent chalking resistance, which helps the coating maintain its appearance and protective properties over time. Flexibility and Crack Resistance: VAE emulsion coatings exhibit excellent flexibility, adapting to the expansion and contraction of the substrate due to temperature fluctuations. This effectively prevents cracking caused by stress concentration in the coating, thereby extending the coating's service life. Adhesion: VAE emulsions (such as VAE Emulsion CW 40-602) exhibit excellent adhesion to a variety of substrates, including common building materials such as cement and bricks. Even in adverse weather conditions, the coating remains firmly attached to the wall and resists peeling.   Cost Advantages First, there is no need to purchase expensive solvents, reducing raw material costs. Second, its high solids content means that less material is required for the same bonding effect. More importantly, it reduces environmental remediation costs associated with hazardous emissions and potential safety risks. For businesses, choosing VAE emulsions is not only a positive response to environmental regulations but also a long-term, sustainable economic investment.   Strong Adhesion Used in Mortar Mixing: VAE emulsion, when added to mortar, increases strength, improves adhesion to various substrates, enhances wear and impact resistance, improves water absorption and permeability, and improves chemical resistance. This polymer mortar is currently widely used due to its excellent properties. Characteristics of Mortar Mixed with VAE Emulsion: When VAE is added to mortar, many properties are improved, as shown in Figure 1. However, the performance of the mortar varies depending on the amount of emulsion added. According to Sumitomo Corporation's research, a P/C (polymer weight/cement weight) ratio of 0.1-0.4 is the optimal ratio for both performance and economics. Increasing Mortar Strength: The fluidity (flow value) of mortar increases with the amount of emulsion added. This fact demonstrates that by adding emulsion, the amount of water can be reduced, resulting in a denser hardened material, increased strength, and reduced shrinkage and water absorption. Improving Mortar Brittleness: When VAE emulsion is mixed into the mortar, vibration-absorbing polymer particles fill the voids in the cement, improving the mortar's impact resistance.   3. Future Development Trends of VAE Emulsions Non-PVA Emulsifier Systems Using a surfactant system and soap-free polymerization technology eliminates the drawbacks of poor water resistance and large particle size caused by PVA's water resistance. Copolymer Systems Using versatate vinyl carbonate, it leverages its high weathering, water, and alkali resistance.   With the growing global focus on sustainable development and green manufacturing, the environmental and health issues associated with traditional adhesives are facing increasing challenges. As a high-performance, environmentally friendly, and versatile adhesive, VAE emulsions are experiencing rapidly growing market demand. Their applications are not only expanding in traditional wood processing, paper products, and textiles, but are also showing great potential in emerging areas such as automotive interiors, building materials, and battery bonding.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com  

In the construction industry, VAE emulsion (Vinyl Acetate Ethylene Copolymer Emulsion) has gained increasing recognition for its versatile applications. By understanding the unique properties and benefits of VAE emulsion, builders can make informed decisions when selecting the most suitable lotion for their specific needs.   VAE emulsion (DA-511 & Airflex 707k) offers numerous advantages when used in coatings and paints. Its exceptional adhesive properties ensure excellent bonding to various substrates, resulting in a durable and long-lasting finish. The versatility of VAE emulsion allows it to be used in both interior and exterior applications, making it highly suitable for a wide range of building projects. Furthermore, its water resistance properties enable coatings and paints to withstand harsh environmental conditions, maintaining their integrity over time.   One of the significant applications of VAE emulsion lies in cement and mortar formulations. When added to cement-based mixtures, VAE emulsion acts as a water-retention agent, enhancing workability and reducing the risk of cracking. Additionally, the presence of VAE emulsion improves the adhesion between cement mortar and various substrates, such as concrete, bricks, and tiles. This results in stronger bonds and increased overall structural stability, making it an ideal choice for construction projects.   When comparing VAE emulsion with other lotions commonly used in building applications, certain differentiating factors come to light. Firstly, VAE emulsion stands out due to its excellent adhesion properties, providing superior bonding strength. Unlike some lotions, VAE emulsion also offers good resistance to water, ensuring the longevity and durability of the applied coatings, paints, and cement mortar. Moreover, VAE emulsion's low volatile organic compound (VOC) content contributes to a healthier indoor environment, making it an environmentally friendly choice.   VAE emulsion proves to be a valuable addition to the construction industry due to its unique properties and benefits. Whether it's coatings, paints, cement, or mortar, the outstanding adhesion, water resistance, and eco-friendly nature of VAE emulsion set it apart from other lotions. Builders and contractors can confidently choose VAE emulsion knowing that they are employing a reliable and high-performing product for their building projects.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com JiangSu ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

In the ever-evolving world of textile production, manufacturers are constantly seeking innovative solutions to enhance product quality and efficiency. Vinyl Acetate Ethylene (VAE) emulsion has emerged as a game-changer, replacing traditional binders in various applications. VAE emulsion, also known as Vinyl Acetate Ethylene Copolymer Emulsion, offers a significant advantage over traditional binders by enhancing the quality and durability of textile products. The unique properties of VAE emulsion enable better adhesion, improved flexibility, and superior resistance to environmental factors such as moisture and heat. This results in textiles that maintain their shape, color, and structural integrity throughout their lifecycle. VAE emulsion finds extensive use in the manufacturing of high-quality textile products. Its adhesive properties make it ideal for bonding various materials, including textiles, foams, and non-woven fabrics, without compromising softness or comfort. Whether it's for upholstery, automotive interiors, or apparel manufacturing, VAE emulsion provides excellent bonding strength and ensures impeccable product finish. With increasing demands for faster production cycles, VAE emulsion offers notable advantages in terms of efficiency and cost-effectiveness. Its VAE Re-Dispersible Emulsion form allows for easy application using conventional techniques, such as spray, brush, or roller. This reduces the production time, enhances productivity, and minimizes wastage. Furthermore, VAE emulsion eliminates the need for additional curing processes, reducing energy consumption and overall production costs. In line with the growing focus on sustainability, VAE emulsion demonstrates its environmental responsibility. Being water-based, it offers a greener alternative to solvent-based binders, minimizing the release of volatile organic compounds (VOCs) into the environment. VAE emulsion ( CW 40-707 & DA-500) is also free from hazardous substances, making it safe for both manufacturers and end-users.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com   JiangSu ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

VAE Emulsion, derived from the copolymerization of vinyl acetate monomer (vam) and ethylene, offers a myriad of benefits that make it highly desirable as a binder. One of its outstanding properties is its excellent flexibility. This characteristic allows sealants formulated with VAE Emulsion to withstand movement and expansion without cracking or compromising their integrity.   In the textile industry, VAE Emulsion has gained significant traction as a binder for various applications. It provides excellent adhesion to different types of fabrics and substrates, ensuring durability and resilience. Whether it is for laminating textiles, carpet backing, or bonding layers in composite materials, VAE Emulsion ((Vinyl Acetate–ethylene Copolymer Emulsion) delivers exceptional performance. It enables the production of high-quality textile products that can withstand repeated use, washing, and other environmental factors.   Architectural sealants play a crucial role in the construction industry, providing protection against water intrusion, air leakage, and noise transmission. VAE Emulsion's unique properties make it an ideal binder for architectural sealants. Its superior flexibility ensures long-term performance, even in areas prone to movement, such as window frames, expansion joints, and curtain walls. Additionally, VAE Emulsion offers excellent adhesion to a variety of substrates, including concrete, metal, and wood, providing reliable and durable seals that can withstand harsh weather conditions.   One of the primary advantages of VAE Emulsion-based sealants is their exceptional crack resistance. The inherent flexibility of the copolymer allows the sealant to absorb stress and movement without developing cracks or losing adhesion. This attribute ensures that the sealant maintains its effectiveness over time, reducing the need for frequent repairs or replacements. Moreover, VAE Emulsion-based sealants exhibit excellent weather resistance, UV stability, and durability, ensuring long-lasting performance in a wide range of environments. VAE (VINNAPAS 7815 & S-510HQ) has become the preferred binder for creating flexible and crack-resistant sealants in various industries, including textiles and architecture. Its outstanding flexibility, adhesion properties, and durability make it an ideal choice for applications where movement and environmental factors are significant challenges. Whether in the textile industry, where VAE Emulsion ensures the strength and durability of fabric laminations, or in architectural sealants that require long-term performance and crack resistance, VAE Emulsion continues to deliver exceptional results.    Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com JiangSu ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Vinyl Acetate Ethylene copolymer emulsion, also known as VAE emulsion, is a versatile material that has gained significant recognition in the market. One of the key factors driving its popularity is its exceptional performance in the textile industry. VAE emulsion is widely used for textile sizing, a vital process that imparts desirable properties to fabrics, such as strength, stiffness, and resistance to shrinkage. The use of VAE emulsion in textile sizing results in improved yarn cohesion and enhanced fabric stability, leading to high-quality and durable garments.   Another area where VAE emulsion is gaining prominence is in the architectural field. As a binder, VAE emulsion(like DA-100L) is extensively employed in architectural coatings, including exterior paints, interior wall paints, and textured coatings. Its excellent film-forming capabilities provide coatings with enhanced weather resistance, water repellency, and durability. Additionally, VAE emulsion improves color stability and gloss, resulting in visually appealing finishes for various architectural surfaces.   The versatility of VAE emulsion extends beyond textiles and coatings. It finds applications in other sectors, including adhesive production. Many adhesives on the market use VAE emulsion as a key ingredient due to its outstanding adhesive properties, flexibility, and high bonding strength. Whether it's woodworking, paperboard lamination, or packaging, VAE emulsion delivers reliable adhesion, ensuring the integrity of bonded surfaces, such as DA-101, DA-102H.   The increasing popularity of VAE emulsion can be attributed to its unique characteristics that set it apart from traditional materials. VAE emulsion is a water-based dispersion made of vinyl acetate and ethylene monomers. This copolymerization process results in a high-quality emulsion that offers excellent stability, exceptional adhesive properties, and enhanced performance in various applications.   Moreover, VAE emulsion is recognized for its eco-friendly nature. As a water-based synthetic polymer, it is relatively safer and more sustainable compared to solvent-based alternatives. Its low volatile organic compound (VOC) content makes it environmentally friendly and compliant with stringent regulations.   When it comes to choosing VAE emulsion, it is essential to partner with a reliable supplier like us who can provide high-quality Vinyl Acetate Ethylene copolymer emulsion tailored to your specific needs. Contact us today to explore how VAE emulsion can transform your industry and elevate your products to new heights performance.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com JiangSu ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

VAE emulsion, short for Vinyl Acetate Ethylene copolymer emulsion, is a versatile material widely used in various industries. Its unique properties make it an essential ingredient in the manufacturing of adhesives, paints, coatings, and construction materials.   VAE Emulsion (DA-310 & DA-117) is a water-based dispersion composed of vinyl acetate and ethylene monomers. This copolymerization results in a high-quality emulsion that offers outstanding adhesive properties, excellent flexibility, and exceptional bonding strength. VAE Emulsion acts as a binder, providing exceptional stability and enhancing the performance of various end products.   One of the notable applications of VAE Emulsion is in the production of adhesives. Due to its excellent adhesion properties, VAE Emulsion is widely used in industries such as woodworking, paperboard lamination, and packaging. The high bonding strength and flexibility of VAE Emulsion enable it to deliver durable and long-lasting adhesion, ensuring the integrity of bonded surfaces.   In the world of architectural coatings, VAE Emulsion plays a crucial role as a binder. It is known for its exceptional film-forming abilities, providing coatings with excellent weather resistance, water repellency, and durability. Moreover, VAE Emulsion enhances the color stability and gloss of coatings, resulting in a visually appealing finish. Its versatility allows it to be used in various coating systems, including exterior paints, interior wall paints, and textured coatings.   Construction materials also benefit from the extraordinary properties of VAE Emulsion. It can be combined with cement, gypsum, or other powders to produce VAE Redispersible Powder. When used in tile adhesives, grouts, and self-leveling compounds, VAE Redispersible Powder enhances workability, water retention, and adhesion strength. This combination ensures reliable performance in demanding applications, such as tile installation and repair.   While the quality of the product itself is essential, exceptional service adds significant value to the overall customer experience. ELEPHCHEM, a leading supplier of VAE Emulsion and related products, is known for its commitment to providing comprehensive services. From technical support to customized solutions, ELEPHCHEM assists clients in optimizing their applications and achieving the desired results. Their expertise and industry knowledge have made them a trusted partner for many businesses.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

VAE emulsion(Vinyl Acetate–ethylene Copolymer Emulsion) is short for ethylene acetate-ethylene copolymerization emulsion, which is a polymer emulsion made of ethylene acetate and ethylene monomer as the basic raw materials and other auxiliary materials through emulsion. Products with ethylene acetate content in the range of 70%～95% are usually in the emulsion state, called VAE emulsions.     VAE Emulsion (CW 40-602 & S-510HQ) is a copolymer of vinyl acetate with low ethylene content having been developed as a powerful adhesive base. It has excellent performance in environmental protection, has good adhesion and environmental protection properties, and is widely used in green fine chemical products. Due to its excellent comprehensive performance and environmental protection characteristics, VAE emulsion is very popular in the market and has become an indispensable green fine chemical product. ‌VAE emulsion is widely used in building materials, textiles, printing and dyeing, papermaking, adhesives, etc. Recommended: ★ ;   Useful: ●   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com JiangSu ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.  

VAE emulsion is the abbreviation of vinyl acetate-ethylene copolymer emulsion. It is a polymer emulsion formed by emulsion polymerization of vinyl acetate and ethylene monomer as basic raw materials with other auxiliary materials.‌The production process of VAE emulsion mainly includes the following steps‌: The main raw materials of VAE emulsion include ethylene, vinyl acetate, emulsifier and initiator. Ethylene can be made from naphtha or natural gas; vinyl acetate is made from the reaction of ethylene and acetic acid.   After mixing ethylene and vinyl acetate in a certain proportion, they are passed into the reactor, initiators and emulsifiers are added, and emulsion polymerization is carried out under appropriate temperature and pressure. Control the reaction speed and temperature to completely convert the monomer and generate VAE emulsion‌.   The generated VAE emulsion needs to be degassed to remove unreacted monomers and low molecular volatiles. Adjust the pH value of the emulsion to make it more stable, and perform filtration to remove impurities and solid particles in the emulsion.   Put the processed VAE emulsion into a special container, seal it and store it away from direct sunlight and high temperature environment.   The production and use of VAE emulsion (DA-310 & VINNAPAS 6300) must comply with national and local environmental protection standards, including emission standards for waste water, exhaust gas, noise, etc. Waste water, waste gas and other waste generated during the production process need to be effectively treated and discharged to ensure compliance with environmental protection requirements.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Vinyl acetate-ethylene copolymer emulsion is a polymer emulsion made of vinyl acetate and ethylene as basic raw materials, referred to as VAE emulsion or EVA emulsion in English. Since its introduction in 1965, it has been widely used in adhesives, building materials, coatings, papermaking, fabric processing, tobacco, packaging and other fields due to its excellent adhesion, permanent flexibility, good acid and alkali resistance and other properties.   In order to improve the performance of VAE emulsion and expand its application range, a lot of fruitful modification research has been done to improve the water resistance, mechanical strength, heat resistance, adhesion, curing speed and other aspects of VAE emulsion. These modification studies are mainly focused on the following directions: additive method, copolymerization method, composite modification method and blending method. Among them, the blending method is a method of physically blending VAE emulsion with one or more polymer solutions or emulsions to form a multi-component system. The properties of the various components of the blending method can complement each other, thereby obtaining new materials with better performance or new properties, reducing costs while potentially expanding the application field of VAE emulsion, allowing VAE emulsion to play a greater application value.   Polymer solutions or polymer emulsions that are often blended with VAE emulsions include: rosin resin, phenolic resin, urea-formaldehyde resin, terpene resin, polyurethane emulsion, acrylic emulsion, styrene-acrylic emulsion, vinyl acetate emulsion, styrene-butadiene emulsion, etc. Since VAE emulsion has good miscibility with a variety of emulsions, blending is the simplest and most direct way to achieve complementary properties of the blended components and obtain new properties.   PVAc emulsion was used to modify VAE emulsion, and at the same time, thickening resin and additives were used to synthesize an adhesive suitable for bonding non-polar plastic materials. The addition of thickening resin significantly improved the bonding strength of the emulsion; the addition of acidic metal salt crosslinking agent improved the water resistance of the system without affecting the stability of the emulsion.   VAE emulsion(such as DA-180L) was modified by blending pure acrylic emulsion, acetic acid acrylic emulsion, silicone acrylic emulsion, styrene acrylic emulsion and VAE emulsion to prepare adhesive. The results show that the VAE emulsion modified by acrylate emulsion has been greatly improved in bonding performance and peel strength. Among them, the adhesive obtained by using acetic acid acrylic emulsion to modify VAE emulsion has the best comprehensive performance, especially the most obvious improvement in high temperature adhesion.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.  

Vinyl acetate-ethylene copolymer (VAE) emulsion is the abbreviation of vinyl acetate-ethylene copolymer emulsion. It is a polymer emulsion formed by copolymerizing vinyl acetate and ethylene monomers with other auxiliary materials through emulsion polymerization.   White latex is a water-soluble adhesive, a thermoplastic adhesive produced by polymerization of vinyl acetate monomer under the action of an initiator. Usually called white latex or PVAC emulsion for short, the chemical name is polyvinyl acetate adhesive, which is synthesized from acetic acid and ethylene to vinyl acetate, with the addition of titanium dioxide (low-grade ones add light calcium, talc, and other powders). It is then made by emulsion polymerization. A thick milky white liquid.   VAE emulsion has the advantages of permanent softness, water resistance, low temperature resistance, fast bonding speed, high bonding strength, and is safe and non-toxic. VAE emulsion( DA-101) is widely used in adhesives, exterior wall insulation, building waterproofing, coatings, composite packaging materials, building cement mortar modification, non-woven fabric manufacturing, paper coating and general adhesive for various polar and non-polar materials. Access and other fields.   The characteristics of white latex include normal temperature curing, fast curing, high bonding strength, good toughness and durability of the bonding layer and not easy to age. White latex is a widely used water-soluble adhesive. It is mainly used in wood bonding, construction industry, coatings, etc. It is also used in furniture assembly, surface repair, etc.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

VAE (ethylene-vinyl acetate copolymer) emulsion viscosity is an important quality indicator and has a significant impact on product mass transfer, heat transfer, fluid flow, emulsion stability and emulsion transportation. Monomer ratio, polymerization temperature, initiator, emulsifier system optimization, electrolyte additives, and storage conditions are all factors that affect the viscosity of VAE emulsion( VAE DA 128).   1. Monomer ratio The selection and proportion of monomers directly affect the viscosity and other properties of VAE emulsion. The ratio of ethylene to vinyl acetate (VAc) is particularly critical. Generally speaking, VAE emulsions with a VAc content of 70% to 95% have higher viscosity. Increased VAc content will increase the flexibility and elasticity of the emulsion, and will also increase the viscosity of the emulsion.   2.Polymerization temperature control Polymerization temperature is another important factor affecting the viscosity of VAE emulsion. Changes in temperature will affect the rate of free radical generation and the rate of polymerization. Generally speaking, within a suitable temperature range, an increase in temperature will speed up the polymerization reaction, causing the latex particles in the emulsion to grow rapidly, resulting in an increase in viscosity. However, too high a temperature may cause the emulsion to gel, affecting its quality and stability.   3.Initiator The amount and type of initiator have a significant impact on the viscosity of VAE emulsions. Initiators mainly affect the rate of polymerization. When the amount of initiator is large, the polymerization reaction is fast, the number of generated latex particles increases, and the viscosity of the emulsion increases. However, excessive initiator may cause the reaction to be too fast and difficult to control, resulting in reduced emulsion performance. Different types of initiators generate different types of free radicals during the reaction and have different effects on the viscosity of the emulsion.   4. Emulsifier system optimization The selection and dosage of emulsifier are crucial to the stability and viscosity of VAE emulsion. The main function of emulsifier is to reduce the surface tension of emulsion and promote monomer dispersion and emulsion formation. Appropriate emulsifier concentration and anionic/nonionic emulsifier ratio can improve the stability of the emulsion and also affect the viscosity of the emulsion. The degree of polymerization and alcoholysis of protective colloids such as PVA (polyvinyl alcohol) also significantly affect the viscosity of the emulsion. The higher the degree of polymerization of PVA, the greater the viscosity of the emulsion; the higher the degree of alcoholysis, the lower the viscosity of the emulsion.   5.Electrolyte additives The addition of electrolyte additives can affect the viscosity and stability of VAE emulsions. Some electrolyte additives can compress the electric double layer of latex particles and reduce the electrostatic repulsion between latex particles, thereby increasing the viscosity of the emulsion. However, excessive amounts of electrolyte additives may cause aggregation in the emulsion, affecting its performance.   The factors that affect the viscosity of VAE emulsions include reaction time and rate, PH value, storage conditions and stability. In actual production and application, these factors need to be reasonably adjusted according to specific needs and conditions to obtain VAE emulsion products with excellent performance.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.