Preparation method of heat-resistant and flame-retardant cable insulating material

Abstract

The invention discloses a preparation method of a heat-resistant and flame-retardant cable insulating material. The heat-resistant and flame-retardant cable insulating material is prepared from 12-18.2 parts of chlorinated paraffin, 13-28 parts of alkyd resin, 20.6-28.9 parts of urea resin, 20-22.5 parts of blanc fixe and asbestos, 18.2-22.8 parts of pentabromure ethyl benzene, 30-40 parts of mica powder, 39-45 parts of polyether-ether-ketone, 6-8.9 parts of low density polyethylene, 1.8-2.2 parts of calcined clay, 18-22 parts of palm oil, 20-30 parts of glycerinum, 7-12 parts of amino propyl trimethoxy silane, 1.6-2.7 parts of bisphenol, 6-9 parts of aluminum hypophosphite, 6-10 parts of polytetrafluoroethylene and 9-12.8 parts of modified filler. A flame retardant in the cable material formulation is formed by compounding a borate flame retardant and a phosphorus and nitrogen flame retardant, the cable material has a good flame-retardant effect and an excellent smoke suppressing effect by adding a small amount of flame-retardant synergist, and the cable material is low in smoke density and low in toxicity index.

Description

technical field [0001] The invention relates to a method for preparing a heat-resistant and flame-retardant cable insulating material. Background technique [0002] Fire retardant coatings are used on the surface of flammable substrates, which can reduce the flammability of the surface of the coated material and retard the rapid spread of fire. There are more and more fires caused by the aging of wires and cables. How to reduce the incidence of fire and the death rate in the event of fire, low smoke, halogen-free, flame retardant, and environmental protection have also become the development direction of the wire and cable industry. Among them, the demand for halogen-free low-smoke flame-retardant cable materials is increasing. At present, most of the production of halogen-free low-smoke flame-retardant cable materials is to add a large amount of magnesium hydroxide or magnesium hydroxide to polyolefin substrates to achieve flame retardancy. However, the addition of a large...

AI Technical Summary

Problems solved by technology

Among them, the demand for halogen-free low-smoke flame-retardant cable materials is increasing. At present, most of the production of halogen-free low-smoke flame-retardant cable materials is to add a large amount of magnesium hydroxide or magnesium hydroxide to polyolefin substrates to achieve flame retardancy. However, the addition of a large amount of inorganic materials affects the physical and mechanical properties and processing performance of the cable material. Its softness, poor weather resistance, oil resistance, and low temperature resistance at room temperature are not very good.