The extensive use of EVA is everywhere in life, EVA puzzle, EVA floor glue, EVA building blocks, EVA slippers, EVA sports accessories, EVA yoga mat and so on.
EVA resin is characterized by good softness, rubber-like elasticity, good flexibility below 0℃, good transparency and surface gloss, good chemical stability, aging resistance and ozone resistance, non-toxicity. Good mixing with filler, good coloring and molding processing. It is closely related to ethylene acetate content, molecular weight and melt index. When the melting index (MI) is fixed and the content of vinyl acetate (VA) is increased, the elasticity, softness, compatibility and transparency are also improved. When the VA content is reduced, the performance is close to that of polyethylene, with increased rigidity, wear resistance and electrical insulation. If the content of VA is constant, the melt index increases, the softening point decreases, the workability and surface gloss improve, but the strength decreases. Otherwise, with the decrease of MI, the molecular weight increases, and the impact performance and environmental stress cracking resistance improve. The polarity of acetate increases elasticity and viscosity, decreases crystallinity and electrical properties, and dissolves in hydrocarbon solvents and oils.
EVA resin is very versatile. Its main products are film, wire and cable, LDPE modifier, sheet, foam products, injection molding products, coating products, hot melt adhesive and so on. Such as:
1. film, wafer and laminate products: with sealing, adhesion, softness, toughness, compression, suitable for elastic packaging film, heat shrink film, agricultural film, food packaging film, laminate film, can be used to do polyolefin laminated film intermediate layer.
2. general supplies: has the advantages of flexibility, environmental stress cracking resistance, good weather resistance, suitable for industrial materials with power wire insulation wrapping, household appliances accessories, window sealing materials, etc.
3. Daily groceries include sports supplies, toys, cushions, straps, sealed container covers, EVA rubber football, etc.
4. Auto accessories include shock absorber, fender, interior and exterior decoration accessories, etc.
5. foaming products: pressure foaming foam plastic slippers, sandals, building materials, etc. Injection molding foam has a variety of industrial parts, women's sole, etc.
6. adhesive, hot melt adhesive, ink, film adhesive.
7. modified additives: asphalt, crude oil, rubber and plastic raw materials.
