Environment-friendly flame-retarding heat-shrinkable tubing material and method for preparing raw material grains thereof

Abstract

The invention discloses an environment-friendly flame-retarding heat-shrinkable tubing material. The tubing material is prepared from, by weight, 40-100 parts of EVA resin, 30-90 parts of magnesium hydrate, 30-60 parts of composite flame retardant, 2-6 parts of color master batches, 1-10 parts of anti-aging agent, and 1-7 parts of biphasic solvent, wherein the composite flame retardant is halogen-free and non-phosphorus flame retardant FR-400B, the anti-aging agent is antioxidant RD, and the biphasic solvent is maleic anhydride grafting biphasic solvent. The invention further discloses a method for preparing raw material grains of the environment-friendly flame-retarding heat-shrinkable tubing material. The method comprises the steps of preparing raw materials, stirring and granulation. An environment-friendly flame-retarding heat-shrinkable tubing prepared with the environment-friendly flame-retarding heat-shrinkable tubing material has a smooth surface and high anti-aging capacity, and the flame-retarding effect of the tubing is as good as that of a traditional heat-shrinkable tubing containing halogen and phosphorus. By the adoption of the color master batches in different colors, the prepared environment-friendly flame-retarding heat-shrinkable tubing material can be in various colors, and the requirements of consumers and manufacturers for colors can be met.

Description

Technical field [0001] The invention relates to a halogen-free and phosphorus-free environment-friendly flame-retardant heat-shrinkable tube material. The invention also relates to a method for preparing raw material particles of the environment-friendly flame-retardant heat-shrinkable tube material. Background technique [0002] Heat shrinkable tubing, also known as heat shrinkable protective tubing, is made of polyolefin and EVA materials to provide insulation protection for wires, cables, and wire terminals. It has high temperature shrinkage, soft flame-retardant, insulation and anti-corrosion, etc. It is widely used for insulation protection of various wiring harnesses, solder joints, inductors, and anti-rust and anti-corrosion of metal pipes and rods. Heat-shrinkable tubing is often used on wire joints. Choose a suitable heat-shrinkable tube, put it on the wire joint, heat it with a hot air gun, and the heat-shrinkable tube shrinks to secure the joint. [0003] The flame-reta...

AI Technical Summary

Problems solved by technology

[0003] The flame retardant components of the raw materials of traditional heat-shrinkable sleeves used halogen-containing antimony trioxide and decabromodiphenylethane in advance. Since halogen-containing products are non-environmental-friendly products, they are easy to pollute the environment and do not meet the current increasingly high standards. Environmental requirements

Therefore, red phosphorus was used as its flame retardant component in the later stage, but phosphorus-containing products can only produce black or red heat-shrinkable sleeves, and its color is greatly restricted, which cannot meet the needs of consumers and manufacturers for diversified colors.