1、氯乙烯

工业产品中醋酸乙烯含量一般为2%～20%，分子量以比浓对数黏度表示为0. 45～0.80，也有个别厂家生产醋酸乙烯含量20%～40%的“高醋”产品。 在聚氯乙烯分子链中引入醋酸乙烯，侧链所带酯基，起着内增塑作用，因而降低了软化温度使加工容易，适用于生产硬质制品和高填料含量制品。 还改进对溶剂的可溶解性，适于配制涂料，可提高对金属的粘接性。 产品的性能取决于醋酸乙烯含量，以15%含量为例，拉伸强度60MPa，热变形温度 (0. 46MPa负荷)57℃，洛氏硬度50，悬臂梁缺口冲击强度lOJ／m2。 可采用悬浮法、溶液法、乳液法、微悬浮法和本体聚合法制各。 悬浮法和溶液法使用较多。

2、乙烯

乙烯-醋酸乙烯共聚物（EVA）是由乙烯和乙酸乙烯（VA含量5%-40%）共聚而成的通用高分子聚合物，燃烧时无刺激性气味，其性能随VA含量变化而改变：VA含量越高，透明度、柔软度和坚韧度越高。 根据VA含量不同采用不同聚合工艺：VA含量低于30%采用高压本体聚合（塑料制品），高于30%采用乳液聚合（粘合剂），此外还有溶液聚合（PVC加工助剂）和悬浮聚合。 通过调节VA比例，EVA可满足薄膜、鞋材、热熔胶、电缆护套等多种应用需求，是一种兼具优异柔韧性和加工性能的高分子材料。 (C2H4)x. (C4H6O2)y.

3、Ethylene

Ethylene-vinyl acetate copolymer (CAS 24937-78-8) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight, uses, prices, suppliers, SDS and more, available at Chemicalbook.

4、ELVAX™

Discover Dow's portfolio of ELVAX™ Ethylene Vinyl Aaetate (EVA) Copolymer Resins. Known for flexibility, toughness, and adhesion, ELVAX™ Resins are a key component in adhesives, sealants, and packaging.

Ethylene Co

Ethylene co-terpolymer emulsions appear as milky white liquids that dry to form flexible, water-resistant films. Key features include good adhesion to low-energy surfaces, excellent flexibility, and compatibility with various additives.

SOLBIN

SOLBIN is a modified resin that combines the toughness and chemical resistance of vinyl chloride, the strong adhesiveness and plasticity of vinyl acetate, and other polar groups that enhance adhesive properties and solubility.

ADHESIVES: PRODUCT OVERVIEW VINNAPAS® DISPERSIONS US

VINNAPAS® VAE dispersions are water- based co- and terpolymers mainly based on vinyl acetate and ethylene as comonomers. Ethylene contributes permanent flexibility to the VAE polymer. No external plasticizer is thus necessary in VAEs. VINNAPAS® and VINNOL® are registered trademarks of Wacker Chemie AG.

How to glue ethylene

Copolymers with high vinyl acetate content are primarily used as components in adhesives and coatings, but they can be vulcanized to achieve useful physical properties. Increasing the vinyl acetate content enhances the polymer’s flexibility, toughness, solubility in organic solvents, and clarity.

Copolymer Resin of Vinyl Acetate and Vinyl Chloride for PVC Adhesive

It is mainly used for vessel & repair paint, plastic paint, vinyl base ink & polish oil, metal / can paint & adhesive, strippable paint, magnetic card adhesive, PU color paste & color chips, calcium PVC floor, microgroove record, etc.

氯乙烯共聚树脂

本词条由 “科普中国”科学百科词条编写与应用工作项目 审核 。 氯乙烯共聚树脂是由氯乙烯与醋酸乙烯、丙烯酸酯等乙烯基单体共聚而成的合成树脂，外文名为vinyl chloride copolymer resin。

Ethylene Vinyl Acetate Chloride Copolymer Glue

In modern material science, ethylene vinyl acetate chloride copolymer glue (EVA)—a critical thermoplastic elastomer—has been widely utilized across various industrial fields due to its unique physicochemical properties. This article provides a detailed overview of EVA’s preparation process, performance characteristics, and application prospects.

I. Preparation Process of EVA

The synthesis of EVA typically involves the following steps:

1. Raw Material Preparation: Ethyl acetate and vinyl chloride monomers are prepared. Ethyl acetate is a colorless, volatile liquid with good solubility and stability, while vinyl chloride is an organic compound with a low melting point and high softening point.

2. Polymerization Reaction: The two monomers are mixed in specific ratios and subjected to polymerization at controlled temperatures. Under the action of free radical initiators, the monomers undergo chain reactions to form high-molecular-weight polymer chains.

3. Post-Treatment: After polymerization, the polymer is separated from the solution, dried, and crushed into EVA particles of defined shape and size.

4. Packaging and Storage: Dried EVA particles are packaged and stored in cool, ventilated environments to maintain their stability.

II. Performance Characteristics of EVA

As a novel thermoplastic elastomer, EVA exhibits the following properties:

1. Excellent Flexibility: Strong interactions between EVA’s molecular chains allow it to deform under external forces and rapidly recover its original shape when the force is removed.

2. Superior Low-Temperature Resistance: With a high glass transition temperature (Tg), EVA maintains elasticity and toughness within a broad temperature range (-40°C to 60°C), suitable for harsh environments.

3. Chemical Resistance: EVA demonstrates strong resistance to acids, alkalis, salts, and other chemicals, ensuring durability in corrosive settings.

4. Low Water Absorption: Its water absorption rate is approximately 0.01%, preserving mechanical properties even in humid conditions.

5. High Transparency: EVA boasts excellent optical properties, including high light transmittance and minimal fogging, making it ideal for eyewear lenses and optical films.

III. Application Prospects of EVA

Owing to its exceptional properties, EVA holds significant potential across diverse sectors:

1. Packaging Materials: Due to its lightweight, softness, non-toxicity, and eco-friendliness, EVA is widely used in food, pharmaceutical, and cosmetic packaging, such as cling wrap and bottle caps.

2. Wire and Cable Sheaths: EVA’s superior electrical insulation and abrasion resistance make it ideal for protective coatings in wires and cables, enhancing product lifespan.

3. Footwear Materials: Its elasticity and anti-slip properties have positioned EVA as a preferred material for sneakers, slippers, and other footwear.

4. Automotive Interiors: EVA’s soundproofing and vibration-damping capabilities suit it for car seats, dashboards, door handles, and sunshades.

5. Building Materials: As technology advances, EVA’s lightweight and environmental attributes may enable its use in roofing tiles, floor tiles, and other construction applications.

Ethylene vinyl acetate chloride copolymer glue (EVA), as a high-performance thermoplastic elastomer, offers vast application potential. With technological advancements and growing market demands, EVA’s utility is expected to expand further, contributing significantly to human progress.