Graphene-containing high flame-retardant, low-smoke and halogen-free cable material and preparation method thereof

Abstract

The invention discloses a graphene-containing high flame-retardant, low-smoke and halogen-free cable material and a preparation method thereof. The graphene-containing high flame-retardant, low-smoke and halogen-free cable material comprises the following components: 55-75 parts of an ethylene-vinyl acetate copolymer, 10-20 parts of an elastomer, 10-25 parts of metallocene linear-low density polyethylene, 5-10 parts of a compatilizer, 3-8 parts of a lubricant, 0.5-2 parts of an antioxidant, 60-100 parts of inorganic filler, 1-5 parts of graphene and 3 parts of carbon black master batches, wherein the weight sum of the ethylene-vinyl acetate copolymer, the elastomer and the metallocene linear-low density polyethylene is 100 parts, the inorganic filler is a mixture of at least one of magnesium hydroxide and aluminum hydroxide and huntite, and the part is weight part. The graphene-containing high flame-retardant, low-smoke and halogen-free cable material can reach the flame-retardant level of UL94 V-0, and is flexible in texture, excellent in mechanical property, long in service life and beneficial to processing and laying.

Description

technical field [0001] The invention relates to a graphene-containing high flame-retardant low-smoke halogen-free cable material and a preparation method thereof, belonging to the field of wire and cable materials. Background technique [0002] Due to the low smoke density released when low-smoke and halogen-free cable materials are burned, the demand for low-smoke and halogen-free cables in the domestic market is increasing. Generally, low-smoke halogen-free cable material manufacturers add a large amount of inorganic flame retardants to the formula and add red phosphorus to improve the flame retardant performance of the cable. But this will bring three problems: 1. The mechanical properties of the cable material deteriorate, and for cables with large cross-sections, it is easy to cause cracking; 2. Red phosphorus burns to produce a lot of smoke, which greatly increases the smoke density generated when the cable burns , which is contrary to the "low smoke" performance; 3. ...

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Problems solved by technology

[0003] In order to solve the defects of poor mechanical properties, low flame retardancy, high smoke, and hard quality of cable materials in the prior art, the present invention provides a graphene-containing high flame-retardant low-smoke halogen-free cable material and its preparation method

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