Low-smoke halogen-free flame-retardant thermoplastic polyolefin elastomer as well as preparation method and application thereof

Abstract

The invention relates to the technical field of polyolefin elastomers and in particular relates to a low-smoke halogen-free flame-retardant thermoplastic polyolefin elastomer as well as a preparation method and application thereof. The low-smoke halogen-free flame-retardant thermoplastic polyolefin elastomer is prepared from the following raw materials in parts by weight: 25-45 parts of SEBS (Styrene Based Block Polymer), 15-25 parts of polypropylene, 5-15 parts of polyethylene, 2-10 parts of ethylene propylene rubber, 10-70 parts of a halogen-free flame retardant, 2-20 parts of a smoke suppressant, 3-5 parts of a compatilizer, 0.1-1.0 part of an antioxidant and 0.5-2.0 parts of processing aids. According to the thermoplastic polyolefin elastomer disclosed by the invention, with the adoption of the raw materials, the weight ratio of the raw materials is strictly controlled, so that the prepared thermoplastic polyolefin elastomer is excellent in flame-retardant effect, low in smoke density, halogen-free, environment-friendly, excellent in temperature resistance and weather resistance, high in strength, excellent in impact resistance and excellent in overall performance.

Description

technical field [0001] The invention relates to the technical field of polyolefin elastomers, in particular to a low-smoke, halogen-free, flame-retardant thermoplastic polyolefin elastomer and its preparation method and application. Background technique [0002] At present, cables are widely used in the fields of power systems, information transmission, and instrumentation systems. However, the cable covering materials made of traditional polymer material PVC are prone to fire and combustion during use, causing fires. Due to the The chlorine content is as high as 60%, which produces fumes of toxic gases such as hydrogen halides and carbon monoxide during combustion. [0003] With the increasing awareness of environmental protection, people are constantly looking for new materials to replace PVC as the sheath of cables. For example, styrene-ethylene / butylene-styrene block copolymer (SEBS) is a new type of thermoplastic elastomer prepared by selective hydrogenation of styrene...

AI Technical Summary

Problems solved by technology

However, halogen-containing flame-retardant materials will produce a large amount of smoke and toxic and corrosive gases when burned, and the gas diffusion rate is much faster than the flame, thus causing serious "secondary disasters"