Ethylene Vinyl Acetate EVA

• Excellent elasticity. The ethylene vinyl acetate resin has excellent elasticity and resilience, which allows it to quickly return to its original shape even after repeated compression or stretching. This property makes it very suitable for the manufacture of products that require good elasticity, such as insoles, cushioning materials, sports equipment, etc.
• Good processing performance. This EVA copolymer has good thermoplasticity and processability, and can be processed by a variety of molding processes, such as injection molding, extrusion, blow molding, etc. This allows EVA resin to be easily made into products of various shapes and sizes to meet different needs.
• Chemical corrosion resistance. EVA granules have good resistance to most chemicals and is not easily corroded by chemicals such as acids, alkalis, and salts. This makes it widely used in occasions that require chemical corrosion resistance, such as chemical plants, swimming pools, etc.
• Excellent insulation properties. The ethylene vinyl acetate copolymer is an excellent insulating material with good electrical insulation properties. Therefore, EVA resin is often used in the insulation layer of wires and cables to ensure the normal operation and safety of electrical equipment.
• Good cold and heat resistance. It has good cold and heat resistance, and can maintain its stable performance over a wide temperature range. This allows it to maintain its original physical and chemical properties even under extreme temperature conditions and adapt to various complex working environments.
• Good adhesion and paintability. The resin has high surface activity, is easy to bond with various materials, and has good paintability. This allows it to be compounded with other materials such as cloth, leather, etc. to enhance its performance or aesthetics.
• Environmental protection. EVA chemical is a recyclable material, and does not produce harmful substances during production and use, which is environmentally friendly. This meets the environmental protection requirements of modern society and promotes its application in various fields.

According to the different VA content, the ethylene vinyl acetate (EVA) copolymer can be divided into three categories: EVA resin, EVA elastomer and EVA emulsion. And each type of EVA copolymer has its own unique performance and application, and is widely used in wires and cables, films, rubber, coatings and other fields. The following is their detailed introduction:

• EVA resin (VA content is usually between 5% and 40%). Due to the introduction of VA, the crystallinity of EVA resin is significantly reduced, and the properties of polymer branching, flexibility, impact resistance, etc. are significantly improved. EVA resin is widely used in polyethylene modification, manufacturing wires and cables, films, and other molded products and mixtures. In addition, it also has important applications in foaming materials, photovoltaic films, functional greenhouse films, injection molding products, and blending agents.
• EVA elastomer (VA content is usually between 40% and 70%). With the increase of VA content, the elasticity of EVA materials increases significantly, and the chain transfer reaction increases, resulting in a wider molecular weight distribution, which affects the fluidity of the melt. EVA elastomer is mainly used in rubber, cables, and automotive industry parts. Due to its high elasticity, it can be used as a modifier for polyvinyl chloride, and it is almost amorphous and has a low glass transition temperature.
• EVA emulsion (VA content is as high as 75% to 95%). Due to the extremely high VA content, EVA emulsion has unique physical and chemical properties and is suitable for specific industrial applications. EVA emulsion is mainly used in coating industries such as adhesives and conductive paints.

In addition, the production process of EVA copolymer includes high-pressure bulk polymerization, suspension polymerization, emulsion polymerization and solution polymerization. Among them, high-pressure bulk polymerization is the mainstream method for producing EVA materials. This method passes ethylene gas into a reactor filled with vinyl acetate liquid under high pressure and high temperature to carry out copolymerization.

At present, the global production of EVA copolymer is mainly concentrated in Northeast Asia, North America and Western Europe. The production capacity in Northeast Asia is mainly distributed in China, South Korea and Japan. With the continuous growth of demand for EVA resin in various industries, especially the rapid development of photovoltaic, footwear, packaging and other industries, the market scale of EVA resin has been gradually expanded. The demand for ethylene vinyl acetate copolymer in the domestic market has increased year by year in recent years, but due to technical and other reasons, the domestic self-sufficiency capacity is limited, and about 70% of the supply has long relied on imports.

In recent years, domestic enterprises have continuously increased their R&D investment in ethylene vinyl acetate resin production technology, and some large-scale projects have been put into production one after another, such as Baofeng Energy’s annual production of 250,000 tons of EVA project, which has created an industry precedent for using coal to replace oil to produce EVA, opened up the entire industrial chain and product chain of coal-based polyolefins, and gradually increased the self-sufficiency rate of domestic EVA resin. In the future, it is expected to occupy a more important position in the global EVA market. At the same time, with the continuous advancement of technology, the performance of EVA ethylene vinyl acetate copolymer resin is also constantly being optimized and upgraded, and new application areas are also being continuously developed, and the market prospects are very broad.

• As a leading ethylene vinyl acetate EVA resin supplier in China, Fengbai has more than 15 years of export experience in plastic chemicals industry.
• We can guarantee sufficient supply and fast delivery.
• Fengbai has a good cooperation with cargo agents and shipping companies.
• Good quality and services, competitive EVA resin price.
• Free samples for testing and different packages to meet customers’ requirements.