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Demolding method for preparing resin/fiber composite

A fiber composite material and resin technology, applied in the field of composite materials, can solve the problems of product surface performance degradation, poor product surface adhesion, difficulty in bonding other components or spraying paint, etc., to ensure product quality and ensure the effect of linearity

Inactive Publication Date: 2016-12-21
XIANNING HAIWEI COMPOSITE MATERIAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When preparing resin / fiber composite materials and need to be cured at elevated temperature (above 100°C), when the mold structure is complex, etc., when using non-metallic molds to prepare products, oily release agents such as silicone grease are usually used to assist demoulding, but under high temperature conditions , it is easy to penetrate into the surrounding resin, resulting in a decrease in the surface performance of the product, and after it penetrates into the silicone grease release agent, the surface adhesion of the product will become poor, making it difficult to bond other parts or spray paint

Method used

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  • Demolding method for preparing resin/fiber composite
  • Demolding method for preparing resin/fiber composite

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Embodiment

[0015] The buoyant material and its production method of the present invention will be further described in detail below in conjunction with specific examples.

[0016] As shown in Figure 1, the inner surface layer of the upper mold 1 and the lower mold 4 is no longer coated with silicone grease release agent, but a layer of 0.01-0.02mm thick polytetrafluoroethylene film 2 is laid on the upper mold. 1. The outer surface of the resin / fiber composite material of the lower mold 4 is also covered with a layer of polytetrafluoroethylene film 2 with a thickness of 0.01-0.02mm, and the outer surface of the resin / fiber composite material is covered with fiber cloth and resin mixture 3 , and then close the upper mold 1, after the product is cured, it can be ensured that the product can be easily released from the mold.

[0017] The film has good ductility and excellent mold release effect. If the part cannot be completely attached to the mold, the opening can be overlapped by 1-2cm. At...

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Abstract

The invention provides a demolding method for preparing a resin / fiber composite. An upper mold and a lower mold are included. The resin / fiber composite is arranged between the upper mold and the lower mold. A middle layer is arranged between the upper mold and the resin / fiber composite. The position between the upper mold and the middle layer or / and the position between the middle layer and the resin / fiber composite is / are each coated with a teflon film. The demolding method has the beneficial effects that a demolding device can guarantee that a product can be separated out of the molds easily after the product is cured, and the quality and the line shape of the product are guaranteed.

Description

technical field [0001] The invention belongs to the field of composite materials. In particular, the present invention relates to release devices for resin / fiber composites. Background technique [0002] When preparing resin / fiber composite materials and need to be cured at elevated temperature (above 100°C), when the mold structure is complex, etc., when using non-metallic molds to prepare products, oily release agents such as silicone grease are usually used to assist demoulding, but under high temperature conditions , It is easy to penetrate into the surrounding resin, resulting in a decrease in the surface performance of the product, and after it penetrates into the silicone grease release agent, the surface adhesion of the product will become poor, making it difficult to bond other parts or spray paint. Contents of the invention [0003] The technical problem to be solved by the invention is to provide a solid buoyancy material with ultra-low density, high strength a...

Claims

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Application Information

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IPC IPC(8): B29C33/44
CPCB29C33/44
Inventor 鲁程
Owner XIANNING HAIWEI COMPOSITE MATERIAL PROD
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