Hood adopting longitudinal-transverse reinforced rib structure and adopting RTM entire shaping technology and manufacturing method of hood

Abstract

The invention provides a hood adopting a longitudinal-transverse reinforced rib structure and adopting an RTM entire shaping technology and a manufacturing method of the hood. According to the hood, carbon fiber textiles are used as a material, the textiles are fixed by adopting a hot melting type fixative, material preparation is performed according to the design of a paved layer, and the textiles are cut; the cut textiles are paved and pasted to a hood mold for preparing preforms, then the preforms are assembled and matched, the RTM entire shaping technology is adopted, under 2-10 bar pressure, resin is poured into the hood mold in which the preforms are paved, finally the resin is solidified and shaped in a curing furnace, and the shaped resin is demolded after solidification so as to obtain the hood with the longitudinal-transverse reinforced rib structure and adopting the RTM entire shaping technology. According to the hood disclosed by the invention, the precision of external dimensions of products can be guaranteed; the continuity of longitudinal and transverse reinforced ribs and a panel is guaranteed through the entire shaping technology method; besides, second cementation shaping is not needed, the apparent mass is better, the dimensions of the products are high in precision, the fiber volume fraction is high, the porosity is low, and the cost of the mold can be reduced through batch production.

Description

technical field [0001] The invention relates to an RTM integrally formed vertically and horizontally reinforced structure opening cover and a manufacturing method thereof. Background technique [0002] Carbon fiber reinforced resin matrix composites (CFRP) are one of the most advanced composite materials at present, with unique advantages such as high specific strength, high specific modulus, fatigue resistance, high temperature aging resistance, and designability. It has received the attention and attention of the aerospace industry that has strict requirements on weight and performance. In recent years, advanced composite materials have developed rapidly and become one of the four major structural materials after aluminum, steel, and titanium, and have become an indispensable strategic material for the structure of aircraft, spaceships, rockets, and artificial satellites. [0003] The United States has used carbon fiber-epoxy composite materials since the F-14 and F-15 fi...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an RTM integrated vertical and horizontal reinforcement structure door cover and its manufacturing method to solve the problems in the prior art of poor continuity between vertical and horizontal reinforcement and panels, high requirements on the secondary bonding process, and uneven bonding quality Qi, does not meet the aviation use requirements and other issues

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