CAS 24937-78-8 Redispersible Polymer Powder VAE Vinyl Acetate Ethylene Copolymer

VAE Vinyl Acetate-Ethylene Copolymer Mortar Dry Powder Putty CAS 24937-78-8

JF REDISPERSIBLE POLYMER POWDER Product Introduce:

Ethylene-vinyl acetate copolymer, referred to as EVA. Generally, the content of vinyl acetate (VA) is 5%-40%. Compared with polyethylene (PE), EVA introduces vinyl acetate monomer in the molecular chain, thereby reducing high crystallinity, improving toughness and impact resistance. , Filler compatibility and heat sealing properties, are widely used in foam shoe materials, functional shed films, packaging molds, hot melt adhesives, wires and cables, toys and other fields.

Redispersible Polymer Powder Features:

It is widely used in foaming shoe materials, functional shed films, packaging molds, hot melt adhesives, wires and cables, toys and other fields.
1. The main products of EVA with vinyl acetate content below 5% are films, wires and cables, LDPE modifiers, adhesives, etc.;
2. EVA products with vinyl acetate content between 5% and 10% are elastic films, etc.
3. EVA with 20-28% vinyl acetate is mainly used for hot melt adhesives and coating products.
EVA is made by copolymerization of LLDPE (linear low density polyethylene) and acetic acid (VA).

The Main Factors Affecting The Performance Of EVA:

1. Melt Index Melt Index (MI for short).
2. The content of VA% acetic acid. The melt index (MI) is certain. The higher the content of vinyl acetate (VA), the higher its elasticity, softness, compatibility, transparency, etc.; when the content of VA decreases, its The performance is close to polyethylene (PE), the rigidity is increased, the abrasion resistance and the electrical insulation are improved. When the content of VA is constant, the melt index (MI) increases, the softening point decreases, the processability and surface gloss improve, but the strength will decrease. Otherwise, with the decrease of MI, the molecular weight will increase, and the impact performance and environmental stress crack resistance will increase.

Features Of EVA:

It has good flexibility, rubber-like elasticity, good flexibility, transparency and surface gloss at -50°C, good chemical stability, good anti-aging and ozone resistance strength, and non-toxicity. Good blending, coloring and molding processability with fillers. The polarity of acetate increases elasticity and viscosity, decreases crystallinity and electrical properties, and dissolves in hydrocarbons and oils.