▎ 摘　　要

NOVELTY - Preparation of high-strength MC nylon modified fiber composite substrate includes preparing high oxidation graphite oxide, modifying with cetyltrimethylammonium bromide, sonicating to obtain modified graphene oxide, and in-situ polymerizing with MC nylon to obtain MC nylon/modified graphene nanocomposite material; mixing e.g. MC nylon/modified graphene nanocomposite, non-halogenated organic phosphinate, hexamethylenetetramine and self-made modified hydrotalcite, crushing, sieving, and stirring to obtain substrate; vacuum-extruding into brick, drying, sintering, pressurized melting and cooling. USE - Method for preparation of high-strength MC nylon modified fiber composite substrate (claimed). ADVANTAGE - The method enhances the mechanical property of the material to greatly adsorb and remove the harmful gas and dust material in the exhaust gas, does not easily burn the raw materials, does not produce harmful gases during high-temperature combustion, and has good flame retardant effect. The product has good comprehensive performance and reasonable formulation. DETAILED DESCRIPTION - Preparation of high-strength MC nylon modified fiber composite substrate comprises: (A) preparing high oxidation graphite oxide, modifying with cetyltrimethylammonium bromide, sonicating to obtain modified graphene oxide, and in-situ polymerizing with MC nylon to obtain MC nylon/modified graphene nanocomposite material; (B) mixing 5-10 pts. wt. MC nylon/modified graphene nanocomposite, 5-7 pts. wt. non-halogenated organic phosphinate, 8-10 pts. wt. hexamethylenetetramine, 2-4 pts. wt. trimethylpentyltriethoxysilane, 0.3-0.5 pt. wt. conductive mica powder, 0.2-0.4 pt. wt. nano-conductive graphite powder, 0.8-1 pt. wt. polyisocyanate trimer, 1-2 pts. wt. PTFE fiber, 20-30 pts. wt. nano-active agent, 2-8 pts. wt. plasticizer, 1-5 pts. wt. antioxidant, 2-6 pts. wt. self-made modified hydrotalcite, 10-18 pts. wt. attapulgite clay, 8-12 pts. wt. nano-titanium dioxide, 6-14 pts. wt. nano-cerium oxide and 2-6 pts. wt. accelerating agent, crushing, sieving through 100-200 mesh sieve, and stirring at 90-100 degrees C to obtain substrate; (C) vacuum-extruding into brick through vacuum brick extruder vacuum of 1.0-1.8 MPa and extrusion pressure of 15-20 MPa; and (D) naturally drying for 15 days, sintering to 700 degrees C, putting into casting machine, pressurized melting to 160-190 degrees C, and cooling for 3-5 hours.