▎ 摘　　要

NOVELTY - Nano-modified high-strength and high-elastic modulus polyurethane epoxy resin comprises A component (100 pts. wt. bisphenol A type epoxy resin, 2.5-5 pts. wt. polyurethane, 2.5-5 pts. wt. polybutadiene rubber, 0.2-0.5 pts. wt. nanometer flexibilizer, 0.1-0.5 pts. wt. graphene, 0.5-1 pts. wt. wetting dispersant, 1-3 pts. wt. anti-UV blocker, and 1-3 pts. wt. coupling agent) and B component (82-86 pts. wt. curing agent and 1-3 pts. wt. accelerator). USE - The resin is useful for reinforcing carbon fiber composite material power transmission tower (claimed). ADVANTAGE - The resin has high comprehensive mechanical performance and fatigue performance of the transmission tower, and has long service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing nano-modified high-strength and high-elastic modulus polyurethane epoxy resin comprising (i) adding bisphenol A type epoxy resin, polyurethane, polybutadiene rubber into a stirring container, controlling the stirring speed at 200-500 revolutions/minute, stirring and raising the temperature to 160degrees Celsius, stirring for 8 hours at 160degrees Celsius to obtain the polyurethane/epoxy resin/polybutadiene rubber polymer, (ii) naturally cooling the polyurethane/epoxy resin/polybutadiene rubber polymer to 100degrees Celsius, adding nano toughening agent and wetting dispersant, adjusting the stirring speed at 1450-1500 revolutions/minute for 5 minutes at 100degrees Celsius to obtain the intermediate, (iii) keeping the stirring speed at 1450-1500 revolutions/minute, cooling the intermediate to 80degrees Celsius, adding graphene and attapulgite, stirring for 5 minutes at 80degrees Celsius, then adding anti-UV blocking agent, coupling agent and release agent, continuously stirring for 10 minutes at 80degrees Celsius, naturally cooling to normal temperature to obtain A component, where the preparation of the component B comprises adding curing agent and accelerator into the reaction container and stirring and raising the temperature to 60-80degrees Celsius, controlling the stirring speed at a rate of 200-500 revolutions/minute, stirring for 10-15 minutes at 60-80degrees Celsius and naturally cooling to normal temperature to obtain the component B. Preferred Components: The weight ratio of the A component to the B component is 100: (82-86). The specific surface area of the graphene is 260-350 m2/g, pH value is 6-8, and the grain diameter is less than 10 microns. The grain diameter of the nanometer toughening agent is less than 50 nm. The amount of the titanium compound in the nanometer toughening agent is not greater than 10 wt.%. The grain diameter of the attapulgite is 100-300 nm, and the specific surface area is 30-50 m2/g. The viscosity of the antiUV blocking agent is 200-300 CPS. The wetting dispersant is organosilicone double-raw structure surfactant with the viscosity of 1200-1500 CPS. The viscosity of the coupling agent is 30-50 CPS. The epoxy equivalent of the polyurethane/epoxy resin/polybutadiene rubber polymer is 200-210 g/eq.