▎ 摘　　要

NOVELTY - Phenolic resin smoke-free flame retardant data line sheathing material comprises e.g. 100-104 pts. wt. styrene ethylene butylene styrene, 65-68 pts. wt. stearic acid, 29-31 pts. wt. polypropylene, 21-23 pts. wt. polypropylene grafted maleic anhydride, 3-4 pts. wt. antioxidant B215, 81-83 pts. wt. magnesium hydroxide, 4.3-5 pts. wt. graphene, 8-9 pts. wt. anhydrous ethanol, 10-12 pts. wt. polytetrafluoroethylene powder, 3-4 pts. wt. phenolic resin, 7-8.5 pts. wt. cordierite powder, 2-3 pts. wt. epoxy soybean oil, 1-1.2 pts. wt. polyvinyl alcohol and water (remaining amount). USE - Used as phenolic resin smoke-free flame retardant data line sheathing material. ADVANTAGE - The phenolic resin smoke-free flame retardant data line sheathing material has good compatibility with matrix, firm product, excellent wear resistance, anti-aging, good flame retardant performance, and is safe, non-toxic and easy processing. DETAILED DESCRIPTION - Phenolic resin smoke-free flame retardant data line sheathing material comprises 100-104 pts. wt. styrene ethylene butylene styrene, 65-68 pts. wt. stearic acid, 29-31 pts. wt. polypropylene, 21-23 pts. wt. polypropylene grafted maleic anhydride, 3-4 pts. wt. antioxidant B215, 81-83 pts. wt. magnesium hydroxide, 4.3-5 pts. wt. graphene, 1.6-1.7 pts. wt. silane coupling agent A-171, 8-9 pts. wt. anhydrous ethanol, 10-12 pts. wt. polytetrafluoroethylene powder, 3-4 pts. wt. phenolic resin, 7-8.5 pts. wt. cordierite powder, 2-3 pts. wt. epoxy soybean oil, 1-1.2 pts. wt. polyvinyl alcohol and water (remaining amount). An INDEPENDENT CLAIM is also included for preparing phenolic resin smoke-free flame retardant data line sheathing material comprising (1) mixing magnesium hydroxide in blast oven, drying at 110 degrees C for 4 hours, adding silane coupling agent A-171 into absolute ethanol, stirring at 500 revolution per minute for 30 minutes, spraying on dry magnesium hydroxide and feeding into high speed mixer, adding graphene, stirring at room temperature at speed of 2000 revolution/minutes for 30 minutes, raising temperature at 60 degrees C, stirring for 30 minutes and then drying at 110 degrees C for 3 hours to obtain composite flame retardant, (ii) placing styrene ethylene butylene styrene, polypropylene, polypropylene grafted maleic anhydride in a blast oven and drying at 80 degrees C for 4 hours, mixing dried styrene ethylene butylene styrene with stearic acid, adding into high-speed mixer, stirring mixture at 1000 revolution per minute for 20 minutes, allowing to stand for 12 hours until styrene ethylene butylene styrene full swelling in stearic acid to obtain oily styrene ethylene butylene styrene, adding polypropylene and polypropylene grafted maleic anhydride into two-roll at 170 degrees C in open-type plastic mill, plastic mixing after 10 minutes, adding oily styrene ethylene butylene styrene and antioxidant B215, continue mixing for 20 minutes, mixing film, crushing in blast oven for 2 hours to obtain mixed base, (iii) dissolving polyvinyl alcohol in 3 times amount of water, adding cordierite powder into mortar for 2 hours, grinding out, then feeding polytetrafluoroethylene powder into twin screw extruder, controlling screw speed at 200 revolution/minutes, stirring for 5 minutes, adding grinding mixture and stirring for 15 minutes, control extrusion temperature of 150 degrees C, extruding and granulating to obtain mixed material, and (iv) adding composite flame retardant, mixed base, mixed material and remaining components into high-speed mixer, mixing at 170 degrees C at speed of 500 revolution per minute at 20% material, feeding material into flat vulcanizer, hot pressing at 180 degrees C, and then cooling at room temperature, crushing into particles, adding particles into twin-screw extruder, extruding and granulating, drying at 80 degrees C for 4 hours.