Low-smoke halogen-free flame-retarding ceramizable thermoplastic polyurethane elastomer composite material, preparation method and application thereof

Abstract

The invention relates to the technical field of polyurethane elastomers and particularly relates to a low-smoke halogen-free flame-retarding ceramizable thermoplastic polyurethane elastomer composite material, a preparation method and an application thereof. The composite material comprises, by weight, 25-85 parts of thermoplastic polyurethane, 10-70 parts of a halogen-free flame retardant, 1-10 parts of a smoke inhibitor, 20-80 parts of a ceramization powder, 0.5-5 parts of a compatilizer, 0.02-0.1 parts of an antioxidant, and 0.02-0.1 parts of a hydrolysis inhibitor. The thermoplastic polyurethane elastomer composite material has excellent flame-retarding effect, low smoke density, high strength, good flexibility and high break elongation, can form a compact ceramized product at the temperature range of 600-1000 DEG C, is low in ceramization temperature and can form compact ceramic. The formed ceramized product has high high-temperature strength and anti-heat-flow-impact capability.

Description

technical field [0001] The invention relates to the technical field of polyurethane elastomers, in particular to a low-smoke, halogen-free, flame-retardant, ceramizable thermoplastic polyurethane elastomer composite material and its preparation method and application. Background technique [0002] With the continuous progress of social development, people's requirements for safety protection continue to increase. In the field of wire and cable, people have higher and higher requirements for the continuous power supply capability of fire-resistant power cables in fires. The insulation performance of fire-resistant power cables has an important impact on their continuous power supply capabilities in fires. [0003] The ceramizable polymer composite material is a new type of heat-resistant material, which is a composite material prepared by adding ceramizable additives to polymer / resin and melt blending. The ceramizable polymer composite material has excellent high and low tem...

AI Technical Summary

Problems solved by technology

This patent has the following disadvantages: the addition of a large amount of porcelain fillers leads to a significant decrease in the tensile strength, tear strength and elongation at break of the composite material, which cannot meet the mechanical performance requirements of cables and optical cables for insulation or sheath materials

[0008] Conventional cables will also produce a large amount of toxic gas and smoke during the combustion process, which will have a great impact on people's escape, and even become a safety hazard. Many people are smoked by smoke and toxic gases in a fire. thus losing the chance of escape