▎ 摘　　要

NOVELTY - Graphene oxide/carbon nanotube high-strength polyurethane insulation board comprises 100-120 pts. wt. isophorone diisocyanate, 0.5-5 pts. wt. isophorone diisocyanate modified graphene, 60-80 pts. wt. polyether polyol, 10-20 pts. wt. foaming agent, 0.5-2.5 pts. wt. amine catalyst, 2-5 pts. wt. silicone foam stabilizer and 5-15 pts. wt. water. The isophorone diisocyanate modified graphene is prepared by using isophorone diisocyanate and graphene oxide/carbon nanotube composite material. USE - Used as graphene oxide/carbon nanotube high-strength polyurethane insulation board. ADVANTAGE - The polyurethane insulation board: has uniform foaming density, large compressive strength, excellent flame retardancy, fine cell pores, and excellent dimensional stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene oxide/carbon nanotube high-strength polyurethane insulation board, comprising (i) dispersing graphene oxide powder uniformly in aqueous phase by ultrasonication, and configuring as dispersion liquid having graphene oxide content of 0.05-2 g/l, then adding dispersion into iron-based nanocatalyst and subjecting to hydrothermal reaction under stirring conditions for 15 minutes, then cooling to room temperature and drying to obtain reaction product, and growing reaction product on surface of the reaction product by chemical vapor deposition of carbon source to obtain graphene oxide/carbon nanotube composite material additive, (ii) adding the graphene oxide/carbon nanotube composite material additive into organic solvent, and performing ultrasonic dispersion, then adding isophorone diisocyanate, reacting at 80-100 degrees C for 4-8 hours, completing the reaction, washing with washing solvent and vacuum drying to obtain isophorone diisocyanate modified graphene/carbon nanotubes, and (iii) dispersing the isophorone diisocyanate modified graphene/carbon nanotube in isophorone diisocyanate by ultrasonically, then mixing with polyether polyol, amine catalyst, silicone foam stabilizer, water, and foaming agent, stirring and pouring into mold to obtain final product.