Preparation process of 125 DEG C flame-retardant insulating material for new energy automobile wire

• Main Authors: CUI JIUDE, AN XIATIAN, REN JINLING, BU XIAOHUA, WEI SANTU
• Format: Patent
• Language: Chinese; English
• Published: 29.05.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses a preparation process of a 125 DEG C flame-retardant insulating material for a new energy automobile wire. The preparation method comprises the following steps: mixing silane modified magnesium hydroxide, silicone resin, silane modified aluminum hydroxide, polyethylene wax, an antioxidant, a crosslinking agent, polyethylene glycol distearate and 1-3 parts of N-amino phthalimide in a high-speed mixer for 6-10 minutes to obtain a first mixture; mixing a polyolefin elastomer, an ethylene-vinyl acetate copolymer, a styrene-butadiene copolymer, residual polyethylene glycol distearate and the first mixture in the high-speed mixer for 8-15 minutes to obtain a second mixture; putting the second mixture into a kneading machine, and mixing for 15-30 minutes at the temperatureof 110-150 DEG C to obtain a mixed material. Under the thermal aging conditions: IRM902 test oil 168h/100 +/- 2 DEG C and 150 DEG C*240h, the tensile strength retention rate of a sheath layer reaches80%, and the elongation a