Continuous heat shrinkable material with low smoke, low halogen and high pressure resistance and manufacturing method thereof

Abstract

The invention relates to a continuous heat shrinkable material with low smoke, low halogen and high pressure resistance and a manufacturing method thereof, and relates to the technical field of production processes of continuous heat shrinkable materials with low smoke, low halogen and high pressure resistance. The product consisting of 50 parts of polyolefin resin, 0.5-1 part of antioxidant, 4.5-9 parts of toughening agent, 28-48 parts of fire retardant, 1-4 parts of heat stabilizer, 1.5-3 parts of sensitizer, 3-5 parts of colored resin and 0.5-2 parts of novel coupling agent is formed by secondary pelleting, extruding, radiating and expanding; the continuous heat shrinkable material with low smoke, low halogen and high pressure resistance has an oxygen index of more than or equal to 28,a tensile strength of more than or equal 12MPa, and a breaking elongation rate of more than or equal to 500%; and the electrical performance can satisfy the corresponding high-pressure demand index, thus the material can be widely applied to the transformer substation bus insulating protection in a power supply system and the industries such as mining industry, chemical industry, petrifaction industry and the like.

Description

technical field [0001] The invention relates to the technical field of production technology of low-smoke, low-halogen high-pressure resistant continuous heat-shrinkable materials. Background technique [0002] Heat shrinkable material, also known as polymer shape memory material, is a kind of intelligent shape material combined with polymer material and radiation processing technology, that is, using the principle of "elastic memory" of polymer polymer, using rubber and plastic materials as the base material, after mixing , molding, cross-linking, heating, expansion, cooling and shaping of functional polymer materials. The macromolecular structure of polyethylene, polyolefin and other materials is usually a linear structure, which becomes a network structure after radiation cross-linking and has a "memory effect". When heated above the melting point, although the crystal grains melt, they do not appear in a fluid state, but have the elasticity of rubber. If the polyethylen...

AI Technical Summary

Problems solved by technology

[0003] At present, heat-shrinkable materials in my country are mainly used in 35KV, 20 KV, 10KV, 1KV power transmission and distribution busbars and insulation protection for complete sets of electrical equipment. There are continuous types of 1KV heat-shrinkable sleeves, and 1m and 2m The fixed-length specifications are mainly used, and the appearance of the joints will be unsightly and waste materials due to cutting during use. The high-pressure pipe material is still a high-smoke and high-halogen product.