| abstract |
The invention relates to a special low-smoke halogen-free flame-retardant insulating material for thin-walled locomotives and a preparation method thereof, comprising the following raw materials in parts by weight: 20-30 parts of high-density polyethylene, and 10 parts of maleic anhydride-grafted ethylene-vinyl acetate copolymer. -20 parts, 50-100 parts of modified hydromagnesite, 10-20 parts of silica aerogel, 5-15 parts of silicon-based flame retardant synergist, 1-2 parts of coupling agent, irradiation cross-linking 1-2 parts of agent, 2-6 parts of lubricant, 2-5 parts of antioxidant. The material of the invention has the advantages of excellent flame retardancy, oil resistance, acid and alkali resistance, low smoke release, no flame retardation, good processing performance, and the like, and the prepared cable material is environmentally friendly and nontoxic. |