▎ 摘　　要

NOVELTY - A high-strength door and window plastic steel section comprises 3-6 pts. wt. glass-reinforced plastics, 0.5-2 pts. wt. KH-903 (RTM: silane coupling agent), 2-5 pts. wt. graphene-modified glass fiber, 5-10 pts. wt. poly(vinyl formal), 4-9 pts. wt. talc powder, 88-94 pts. wt. PVC SG-4, 0.1-1 pt. wt. poly(styrene-maleic anhydride), 3-5 pts. wt. modified bauxite, 3-6 pts. wt. polyethylene terephthalate, 2-4 pts. wt. lithium-molybdenum disulfide-based lubricating grease, 0.5-2 pts. wt. dibutyltin dilaurate, 2-5 pts. wt. carbon black, 0.1-0.5 pt. wt. accelerant CZ and 40 pts. wt. water. USE - High-strength door and window plastic steel section (claimed). ADVANTAGE - The safe high-strength door and window plastic steel section has excellent mechanical strength, and can be prepared by effective, efficient and economical process with reduced man power. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of high-strength door and window plastic steel section.