Vacuum auxiliary molding technique produced by high-facade composite material for ship

Abstract

The invention discloses a vacuum assistant resin infused method for molding a high elevation part of composite materials used on ship and comprises the working procedures of raw material preparation, forming process, etc. The invention is characterized in that in the forming process, the direction of a resin channel is the same as the height direction of the product; a plurality of glue-injectionpipes or exhaust pipes parallel to the width direction of the product are arranged in the height direction of the product; the product is divided into a plurality of forming units by the glue-injection pipes or exhaust pipes in the height direction; the distance between the edge of permeable medium and the glue-injection pipes or exhaust pipes is controlled and each unit comprises a flood protection material system of stream guidance, glue injection and gas exhaust, and the like; in the forming process, each unit is immersed successively from bottom to top in a relay style. The invention is used for molding the high elevation part of composite materials used on ship, increases the penetration degree and uniformity of the resin, raises the product quality, and gives good mechanical and sea-water proof property to the product with greatly reduced weight, thereby improving the loading capacity and ample stability of the operation platform on water surface and under water.

Description

technical field The invention relates to a composite material forming process technology, in particular to a vacuum-assisted forming process technology, in particular to a forming technology for high facade composite material parts. Background technique At present, large-scale ship parts at home and abroad are made of steel or glass fiber composite materials. Steel materials have disadvantages such as heavy weight, affecting ship loading and speed, and significant target characteristics such as sound and radar. Therefore, many parts are being composited. Material substitution research. At present, large parts of marine glass fiber reinforced resin matrix composite materials in my country are mainly produced by hand lay-up molding process, but the hand lay-up molding process of composite materials is highly dependent on the operator, the production efficiency is low, the product quality stability is poor, and the labor intensity is high. serious air pollution and other disadv...

AI Technical Summary

Problems solved by technology

However, for marine high-facade composite parts, according to Darcy's law (a calculation method for resin permeability), the force will decrease in a gradient as the flow distance increases during resin impregnation, and the effect of gravity will be added. It may lead to incomplete impregnation of reinforcing materials when molding high-facade parts, which will affect the quality of the parts and lead to molding failure in severe cases

After searching, there are no patents on the vacuum-assisted forming process of high-facade composite parts at home and abroad, and there are no literature and related publications on the use of vacuum-assisted technology to manufacture high-facade composite parts.

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