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

A composite material and forming process technology, applied in the field of composite material forming process, can solve the problems such as the absence of patents for vacuum-assisted forming process methods for high-facade composite material parts, incomplete impregnation of reinforcing materials, and affecting the quality of parts, etc., to achieve The appearance is uniform and beautiful in color, less defects, and the effect of marine environment resistance

Active Publication Date: 2009-01-28
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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
[0004] 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.

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Formula: (parts by mass)

[0042]Vinyl ester resin (430LV) 100 parts

[0043] 2 parts methyl ethyl ketone peroxide (MEKP M-50)

[0044] Cobalt naphthenate (accelerator E) 0.8 parts

[0045] Release agent: solution type release agent (700NC).

[0046] Equipment: RCD vacuum-assisted forming equipment is used.

[0047] Mold treatment: use solution-type release agent (700NC) to treat the surface of the mold, and the thickness is controlled at 0.05-0.4mm.

[0048] Reinforcement material: Cut high-strength glass fiber fabrics of appropriate size according to the lay-up design and runner design.

[0049] Lamination: Lay high-strength glass fiber fabrics according to the design of orthogonal lamination.

[0050] Release cloth laying: According to the size of the product, the release cloth of the corresponding size is cut and spread on the surface of the high-strength glass fiber fabric, and attention should be paid to avoid bubbling and pleating

[0051] Pipeline and dive...

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PUM

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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-injection pipes 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 [0001] 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 [0002] 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36B29C70/48B29C70/54
Inventor 张建设王利张兴刚
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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