A 150°C-resistant radiation-free, oil-resistant, low-smoke, halogen-free, flame-retardant polyolefin cable material and its preparation method

Abstract

The invention relates to a 150-DEG C-resistant irradiation-free oil-resistant low-smoke halogen-free flame-retardant polyolefin cable material and a preparation method thereof. The invention is characterized in that the cable material is prepared from the following raw materials in parts by weight: 20-50 parts of ethylene-vinyl acetate copolymer, 10-30 parts of polyurethane rubber, 30-45 parts of high-density polyethylene, 5-20 parts of copolymerized fluorosilicone rubber, 50-150 parts of halogen-free flame retardant, 5-20 parts of compatilizer, 1-2 parts of vulcanizing agent, 1.5-3 parts of anti-aging agent, 2-5 parts of antioxidant, 3-6 parts of lubricant and 15-30 parts of reinforcing agent. The preparation method comprises the following steps: mixing the raw materials in a high-speed mixer, adding the mixture into an extruder, and granulating to obtain a master batch; and adding the master batch, polyurethane rubber, high-density polyethylene, compatilizer and residual halogen-free flame retardant into a Banbury mixer, banburying, and discharging into a double-screw / single-screw double-stage mixer set, carrying out plasticizing extrusion and granulation, thereby obtaining the product. The polyolefin cable material provided by the invention can obtain excellent oil resistance, high temperature resistance, high flame retardancy and other properties without irradiation crosslinking.

Description

[0001] Involved areas [0002] The invention belongs to the technical field of cable materials, in particular to a 150°C-resistant, radiation-free, oil-resistant, low-smoke, halogen-free, flame-retardant polyolefin cable material and a preparation method thereof. Background technique [0003] Low-smoke, halogen-free, flame-retardant cable materials are becoming more and more popular and valued in the field of wire and cable due to their superior properties such as environmental protection, low smoke, and flame retardancy. They are potential substitutes for conventional PVC cable materials. In recent years, with the continuous deepening of domestic research on low-smoke halogen-free flame-retardant cable materials, the development of low-smoke halogen-free cable materials is quite rapid, and its development direction is from the basic requirements of environmental protection and flame retardancy to high flame retardancy and crack resistance. , oil resistance, wear resistance, f...

AI Technical Summary

Problems solved by technology

Considering the oil resistance requirements of locomotive cables, many cable manufacturers expect to develop a 150°C radiation-free, oil-resistant, low-smoke, halogen-free, flame-retardant polyolefin cable compound, which can be directly extruded into wires without radiation cross-linking, which is simple and convenient, suitable for Most cable factories use it, but so far there is no public report of such a 150°C oil-resistant radiation-resistant low-smoke, halogen-free, flame-retardant polyolefin cable material

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