▎ 摘　　要

NOVELTY - A polybutylene terephthalate engineering plastic comprises 30-50 pts. wt., preferably 40 pts. wt. polybutylene terephthalate resin, 10-20 pts. wt., preferably 15 pts. wt. modified phenolic resin, 4-10 pts. wt., preferably 7 pts. wt. pentaerythritol stearate, 3-9 pts. wt., preferably 6 pts. wt. silicon micropowder, 2-6 pts. wt., preferably 4 pts. wt. graphene, 2-4 pts. wt., preferably 3 pts. wt. glass fiber, 1-3 pts. wt., preferably 2 pts. wt. polyester fiber, 4-12 pts. wt., preferably 8 pts. wt. antimony trioxide, 5-10 pts. wt., preferably 8 pts. wt. nano calcium carbonate, 8-18 pts. wt., preferably 13 pts. wt. modified calcium carbonate filler, 6-16 pts. wt., preferably 11 pts. wt. polyacrylamide, 3-9 pts. wt., preferably 6 pts. wt. magnesium oxide, and 4-10 pts. wt., preferably 7 pts. wt. silane coupling agent. USE - Polybutylene terephthalate engineering plastic. ADVANTAGE - The environmentally-friendly polybutylene terephthalate engineering plastic has high flame retardance, excellent wear resistance, high temperature resistance and long service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of polybutylene terephthalate engineering plastic, which involves mixing silicon micropowder, graphene, glass fiber, polyester fiber, antimony trioxide, nano calcium carbonate, modified calcium carbonate filler and magnesium oxide, adding to a grinder for grinding for 12-24 minutes to obtain mixture (A), adding mixture (A) with modified phenolic resin, pentaerythritol stearate and silane coupling agent, mixing, adding to the stirred tank, high and low speed mixing and stirring to obtain mixture (B), adding mixture (B) with polybutylene terephthalate resin and polyacrylamide, mixing at 120-150 degrees C for 20-30 minutes to obtain mixture (C), adding mixture (C) to twin-screw extruder for melt extrusion to obtain mixed material, adding mixed material to granulator and granulating.