US Polymers

Key Characteristics:

Toughness Enhancement: The main purpose of impact modifiers is to improve the ductility and toughness of thermoplastics, which can otherwise be brittle.

Rubber-Based Additives: Many impact modifiers are based on rubber or elastomers, such as EPDM (Ethylene Propylene Diene Monomer), SBR (Styrene Butadiene Rubber), Acrylic or Nitrile Rubber. These rubber components absorb energy from impacts and disperse it, preventing the polymer from fracturing.

Processing: Thermoplastic impact modifiers are typically incorporated into a polymer during the extrusion or injection molding process, where they are dispersed uniformly throughout the polymer matrix.