Low-smoke halogen-free inflaming-retarding cable material and preparation method thereof

Abstract

The invention provides a low-smoke halogen-free inflaming-retarding cable material and preparation method thereof. The cable material comprises 5 to 15 parts (part by weight) of compatilizer that comprises maleic anhydride functional group grafted ethylene-vinyl acetate copolymer and maleic anhydride functional group grafted ethylene propylene terpolymer; 85 to 95 parts of base material formed byblending two or more than two of linear low-density polyethylene, ethylene-vinyl acetate copolymer and ethylene propylene terpolymer granular materials; 2 to 6 parts of composite antioxidant composedof the following antioxidants in terms of weight ratio: hindered phenol antioxidants : thiol ester antioxidants = 1 : (2 to 6); 20 to 40 parts of ammonium polyphosphate; 10 to 20 parts of pentaerythritol; 8 to 15 parts of melamine; 50 to 100 parts of composite inorganic fire retardant composed of the following fire retardants: magnesium hydroxide : zinc borate = (2 to 4) : 1; 2 to 6 parts of lubricant; 0 to 0.5 parts of metal passivator; 0 to 3 parts of crosslinking assistant agent; and 0 to 5 parts of halogen-free master batch. The invention has provided a harmless halogen-free inflaming-retarding cable material having high temperature tolerance, high tension, high elongation and high fire resistance.

Description

technical field [0001] The invention relates to a flame-retardant cable material, in particular to a low-smoke halogen-free flame-retardant cable material. Background technique [0002] In 2002, the European Union formulated the "Electronic Waste Disposal Law" with two directives, one of which is the "Directive on Prohibiting the Use of Certain Hazardous Substances in Electrical and Electronic Equipment" (ROHS). The ROHS Directive requires that electrical and electronic products put on the EU market after July 1, 2006 must not contain six harmful substances including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers. Correspondingly, at the beginning of 2004, the Ministry of Information Industry of the People’s Republic of China formulated the Measures for the Prevention and Control of Pollution by Electronic Information Products (referred to as the Measures) in accordance with relevant regulations such as the Cleaner Pr...

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Problems solved by technology

[0007] However, it is difficult to prepare halogen-free flame-retardant materials with high temperature resistance (150°C), high strength (≥13.79MPa), high elongation (≥300%), and high flame retardancy (VW-1) for the above halogen-free flame-retardant materials. Wire and Cable