A rapid compression molding process of carbon fiber prepreg

A carbon fiber prepreg, molding technology, applied in the field of polymer material preparation, can solve the problems of long molding process cycle and low molding efficiency, and achieve the effects of good quality of molded products, improved production efficiency, and reduced molding time.

Active Publication Date: 2020-01-31
JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Purpose of the invention: In order to overcome the problems of long carbon fiber prepreg molding process cycle and low molding efficiency in the prior art, the present invention proposes a carbon fiber with high efficiency, fast speed, improved production efficiency, low carbon and low energy consumption, and good quality of finished products. Rapid Compression Molding Technology of Prepreg

Method used

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  • A rapid compression molding process of carbon fiber prepreg

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A rapid compression molding process for carbon fiber prepreg, wherein the prepreg is unidirectional carbon fiber epoxy resin prepreg, the curing temperature is 150°C, and it can be maintained at 150°C for 20s without gelling or curing, and the curing time is 1min. The glass transition temperature is 140-150°C, and a flat self-cleaning non-stick mold is used. The self-cleaning non-stick mold substrate is prepared from metal materials, and its cavity is coated with a layer of non-stick coating; no mold release agent is required, and there is no residue when the product is demoulded, and no additional mold cleaning process is required. The non-stick coating is polytetrafluoroethylene; in the curing temperature range from room temperature to 200°C, under the curing pressure of 3-20MPa, within 100,000 mold times, no foaming, cracking, falling off, discoloration, etc. question.

[0025] Please refer to figure 1 , the specific process steps are as follows: open the equipment...

Embodiment 2

[0032] A carbon fiber prepreg rapid molding process, wherein the prepreg is a unidirectional carbon fiber epoxy resin prepreg, the curing temperature is 90°C, and it can be kept at 90°C for 30s without gelling or curing, and the curing time is 1min. The glass transition temperature is 80-90°C, and a flat self-cleaning non-stick mold is used. The self-cleaning non-stick mold substrate is prepared from metal materials, and its cavity is coated with a layer of non-stick coating; no mold release agent is required, and there is no residue when the product is demoulded, and no additional mold cleaning process is required. The non-stick coating is made of silica gel; within a curing temperature range of room temperature to 200°C, under a curing pressure of 3-20 MPa, within 100,000 mold times, problems such as foaming, cracking, falling off, and discoloration do not occur.

[0033] Please refer to figure 1 , the specific process steps are as follows: open the equipment and quickly he...

Embodiment 3

[0036] A carbon fiber prepreg rapid molding process, wherein the prepreg is a plain carbon fiber epoxy resin prepreg, the curing temperature is 120°C, it can be kept at 120°C for 30s without gelling and curing, and the curing time is 1min. After curing, the glass The melting temperature is 110-120°C, and a flat self-cleaning non-stick mold is used. The self-cleaning non-stick mold substrate is prepared from metal materials, and its cavity is coated with a layer of non-stick coating; no mold release agent is required, and there is no residue when the product is demoulded, and no additional mold cleaning process is required. The non-stick coating is a mixture of polytetrafluoroethylene and silica gel materials; within the curing temperature range of room temperature to 200 ° C, under the curing pressure of 3-20 MPa, within 100,000 mold times, no foaming, Cracking, peeling, discoloration and other problems.

[0037] Please refer to figure 1, the specific process steps are as fo...

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Abstract

The invention discloses a rapid compression molding process for carbon fiber prepreg. The carbon fiber prepreg is used as a forming material, a prepreg molding process is used as a foundation, an online molding and curing process, a next-period thermal laying process and a previous-period product cooling aftertreatment process can be carried out simultaneously, and finally, buckling deformation of the product does not exist. In the whole process, steps of preforming, coating of a release agent and mold cleaning are not required, the mold heating and cooling time in every forming period is saved, therefore, the forming time is greatly saved, the production efficiency is improved, power consumption costs for heating and cooling are reduced, and a forming environment is improved; and the shortest final forming period can be controlled within 5 minutes, the quality of formed products is good, and requirements of automobile parts and requirements of the production trend can be met.

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a carbon fiber prepreg rapid molding process. Background technique [0002] Carbon fiber prepregs are widely used in fishing tackle, sports equipment, sporting goods, aerospace, vehicles and other fields. Especially with the development of the automobile industry, the requirements for lightweight are getting higher and higher. The application of carbon fiber and its composite materials in automobiles more and more widely. Carbon fiber prepreg is an intermediate material formed by impregnating carbon fiber or its fabric with a controlled amount of resin. The molding of carbon fiber prepreg does not require resin infusion, which is environmentally friendly. The resin content of the prepreg molding product is stable, the surface quality is good, and the process Simple; carbon fiber prepregs can be molded into composite products through autoclaves, vacuum assist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/38B29K105/08
CPCB29C70/34B29C70/38B29K2105/0872
Inventor 鲁平才王召召
Owner JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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