Manufacturing method of composite material cabin door of foam sandwich structure

Abstract

A manufacturing method for a foam sandwich structure composite material hatch, the technical points of which include designing and optimizing the overall structure and layering of the hatch, completing the design and manufacture of molds, selecting fiber cloth and according to the size of the actual product According to the requirements, the material is cut, the foam material and embedded parts are selected, and the preparation of the prefabricated body is completed. The release cloth, the flow guide net and the glue injection support are laid in sequence on the inner skin cloth, and the air duct is fixed around the prefabricated body. Cover with sealing tape and vacuum bag film, connect the exhaust pipe and carry out process combination, vacuumize at room temperature, prepare the required resin in the material barrel, introduce the resin into the prefabricated body, and after the resin infiltrates the fiber, according to the curing process of the resin, room temperature or Heating and curing, after curing, cool down to room temperature naturally, turn off the vacuum system, and post-process the parts after demoulding; this technical solution has obvious weight reduction effect, strong designability, stable product shape and size, excellent thermal insulation performance, and good damping The noise reduction performance is obvious.

Description

technical field [0001] The invention relates to the technical field of manufacturing methods for composite material hatches, in particular to a manufacturing method for composite material hatches with a foam sandwich structure. Background technique [0002] The doors, hatches and body panels of traditional cars are mainly made of aluminum alloy materials. With the introduction of the concepts of lightweight vehicles, energy saving and emission reduction, and the gradual clarification of goals, weight reduction of new energy vehicle bodies has become an urgent problem to be solved. . [0003] Since the density of the aluminum alloy material is about 2.54g / cm 3 , so it has gradually failed to meet the weight reduction requirements of the car body. In comparison, composite materials have the characteristics of strong designability, high specific strength, high specific modulus, and corrosion resistance. Different material systems are used, and the density is designed at 1.5 g...

AI Technical Summary

Problems solved by technology

[0004] Foam materials have excellent thermal insulation properties and have the function of sound insulation and noise reduction. They can not only effectively reduce weight and improve the rigidity of the product, but also realize the function of thermal insulation and noise reduction. However, there is no foam sandwich structure composite material hatch in the prior art. , in the prior art, the outer surface smoothness, thermal insulation performance, damping and noise reduction performance, corrosion resistance and fatigue resistance performance all need to be improved, the molding method is complicated to operate, and the manufacturing and installation costs are high