Diesel-resistant flame-retardant heat-shrink tube and preparation method thereof

The invention relates to a diesel-resistant flame-retardant heat-shrink tube. The diesel-resistant flame-retardant heat-shrink tube is prepared from the following ingredients in parts by weight: 20-50 parts of polyethylene, 50-80 parts of acrylate rubber, 2-5 parts of maleic anhydride grafted polyethylene, 10-20 parts of high abrasion furnace black, 5-15 parts of microcapsule red phosphorus, 30-60 parts of amino silane modified aluminum hydroxide, 3-5 parts of zinc oxide, 1-3 parts of tetra[methyl-(3,5-di-tertiary butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, 2-6 parts of 4,4'-bis(alpha,alpha-dimethyl benzyl)diphenylamine and 1-3 parts of lubricant, wherein the polyethylene is one or a mixture of more of linear low-density polyethylene, medium-density polyethylene, high-density polyethylene, and the lubricant is one or a mixture of more of stearic acid, zinc stearate, magnesium stearate and polyethylene wax. The heat-shrink tube provided by the invention can be used by a diesel engine and is high-te