A kind of prepreg based on high temperature resistant composite material resin and preparation method thereof

Abstract

The invention provides a prepreg based on a high-temperature-resistant composite material resin and a preparation method thereof. The preparation method comprises the following steps: preparing an epoxy resin and benzoxazine in a ratio of 100:(20-40), and mixing in an 80-DEG C environment at the rate of 500 rpm for 20-50 minutes; impregnating carbon fibers in the resin at 80-90 DEG C for 7-10 minutes, and baking in a 140-150-DEG C environment for 10-15 minutes to obtain the prepreg for the high-temperature-resistant composite material. The epoxy resin is prepared from a phenol formaldehyde epoxy resin F51 and one of a glycidyl amine epoxy resin (AG-80), an ester ring epoxy resin (TDE-85) and a hydantoin epoxy resin, and the benzoxazine is 3-pyridyl-3,4-dihydro-1,3-benzoxazine. The resin for the high-temperature-resistant composite material has high heat resistance, and satisfies the application demands of the product in the fields with higher requirements for heat resistance.

Description

technical field

[0001] The invention belongs to the field of composite materials, and in particular relates to a prepreg based on high temperature resistant composite material resin and a preparation method thereof. Background technique

[0002] Carbon fiber reinforced composite material (CFRP) is one of the most advanced composite materials at present. It is widely used as a structural material due to its light weight, high strength, corrosion resistance, self-lubrication, and excellent thermodynamic properties, which is unmatched by other fiber reinforced composite materials. of. It is widely used in foreign advanced strategic and tactical solid rocket motors, such as the three-stage engine casing of the U.S. strategic missile "Dwarf", the composite material skirt of the first, second, and third-stage engine casings of the "Trident", and the militia series engines. Nozzle expansion section, some solid motors and high-speed tactical missiles such as THAAD and ERINT of the ...