High-efficiency halogen-free flame-retardant cable material and preparation method thereof

Abstract

The invention discloses a high-efficiency halogen-free flame-retardant cable material and a preparation method thereof. The high-efficiency halogen-free flame-retardant cable material comprises the following components in percentage by mass: 15-30% of an ethylene-vinyl acetate copolymer, 30-50% of polyethylene resin, 30-40% of a high-efficiency halogen-free flame retardant, 1-3% of an organosilicon compound and 2-5% of an anti-aging agent; wherein the efficient halogen-free flame retardant is prepared from diethyl phosphinic acid (poly) amino polyalkylene aluminum phosphate and a nitrogen compound. The high-efficiency halogen-free flame retardant is used for replacing a traditional aluminum hydroxide flame retardant, has the characteristics of low filling amount and good flame retardant effect, does not release a large amount of corrosive gas during combustion, and meets the mechanical property requirements of wires and cables at the same time. An electric wire prepared from the cable material has the performance of resisting the high temperature of 150 DEG C and the low temperature of -40 DEG C, further has the characteristics of no halogen, environmental protection, scraping and whitening resistance and high mechanical property, meets the standard requirement of UL VW-1 high flame retardant property, and has a wide market application prospect.

Description

technical field [0001] The invention relates to the technical field of radiation crosslinked halogen-free flame-retardant XLPE materials, in particular to a high-efficiency halogen-free flame-retardant cable material meeting UL VW-1 grade standards and a preparation method thereof. Background technique [0002] XLPE is the abbreviation of the English name of cross-linked polyethylene. Polyethylene is a linear molecular structure that is easily deformed at high temperatures. Cross-linked polyethylene is to cross-link the polymer through a cross-linking agent, changing from a linear structure to a network structure. XLPE with net-like three-dimensional structure has excellent heat resistance, strong deformation resistance, good insulation, good mechanical and strong chemical resistance. After adding flame retardant, the product can effectively prevent, delay and terminate the flame when it is attacked by an external fire source, so as to achieve the purpose of flame retardanc...

AI Technical Summary

Problems solved by technology

[0004] At present, the most widely used halogen-free flame retardants on the market are generally inorganic flame retardants such as magnesium hydroxide and aluminum hydroxide, which have the advantages of low price, abundant sources, good smoke suppression effect, and no corrosive gas and other Harmful substances and other advantages, but the addition of such flame retardants is generally 50%-70%, otherwise the flame retardant effect is poor

However, as the amount of addition increases, the

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