Dynamic vulcanized thermoplastic elastomers and preparation thereof

Abstract

The invention discloses a dynamically vulcanized thermoplastic elastomer and a preparation method thereof, which relates to a thermoplastic plastic elastomer and a preparation method thereof. The thermoplastic plastic elastomer includes ingredients of 50 portions to 80 portions of HPVC, 20 portions to 50 portions of ethylene-propylene-diene rubber, 10 portions to 35 portions of plasticizer, 10 portions to 30 portions of filler, 0.1 portion to 0.5 portion of cross linker, 0.05 portion to 1 portion of crosslinking aid, 1 portion to 5 portions of stabilizer, 0.1 portion to 1 portion of lubricant, 5 portions to 20 portions of compatilizer and 1 portion to 5 portions of auxiliary agent. The preparation method comprises the following steps that the ingredients are fully mixed in a high-speed mixer, then carry out melt compounding, dynamic vulcanization and finally extruded and granulated. The thermoplastic elastomer of the invention can be widely applied to the fields such as wires and cables, oil-resistant hoses and gas hoses, grand strips, sports goods and shoe bottom materials, coating rubber of conveyor belts, etc.

Description

technical field [0001] The invention relates to a thermoplastic elastomer and a preparation method thereof, in particular to an HPVC / EPDM thermoplastic elastomer with excellent performance prepared by a dynamic vulcanization method. Background technique [0002] Thermoplastic elastomer is a new type of polymer material that can flow at high temperature, exhibit high elasticity of rubber at room temperature, and has both plastic and rubber properties. It is also called the third-generation rubber. Currently widely used is the use of rubber and plastic blending method to prepare thermoplastic elastomers. [0003] Dynamic vulcanization refers to the crosslinking of elastomers during melt processing. Through dynamic vulcanization, the blend has a rubber phase composed of a cross-linked elastomer and a plastic phase composed of a thermoplastic resin. The cross-linking of the rubber phase stabilizes the shape of the rubber particles, thereby preventing the rubber particles from b...

AI Technical Summary

Problems solved by technology

Due to the beautiful appearance of high-polymerization polyvinyl chloride (HPVC) and excellent properties such as oil resistance, wear resistance, and corrosion resistance, its disadvantages such as poor toughness and poor heat resistance limit its further application.