Low-smoke, halogen-free and flame-retardant thermoplastic polyolefin elastomer composite with ceramization function as well as preparation method and application thereof

Abstract

The invention relates to the technical field of polyolefin elastomers, in particular to a low-smoke, halogen-free and flame-retardant thermoplastic polyolefin elastomer composite with a ceramization function as well as a preparation method and an application thereof. The low-smoke, halogen-free and flame-retardant ceramic thermoplastic polyolefin elastomer composite is prepared from raw materials in parts by weight as follows: 20-80 parts of thermoplastic polyolefin, 2-10 parts of EVA (ethylene-vinyl acetate) resin, 2-10 parts of ethylene propylene rubber, 20-70 parts of a halogen-free flame retardant, 1-10 parts of a smoke suppressant, 20-80 parts of ceramization powder, 0.5-5 parts of a compatilizer and 0.02-0.1 parts of an antioxidant. The low-smoke, halogen-free and flame-retardant ceramic thermoplastic polyolefin elastomer composite has a good flame retardant effect and is low in smoke density, high in strength, good in flexibility and high in elongation at break; a compact ceramization product can be formed at the temperature of 600-1,000 DEG C, the ceramization temperature is low, ceramization is compact, and the formed ceramization product has good high-temperature strength and heat flow impact resistance.

Description

technical field [0001] The invention relates to the technical field of polyolefin elastomers, in particular to a low-smoke, halogen-free, flame-retardant, ceramizable thermoplastic polyolefin 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 tempera...

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

However, there are no materials that have the functions of flame retardancy, low smoke and ceramicization at the same time, so as to completely overcome the negative impact on personnel escape caused by burning cables and optical cables, and there are few reports