Preparation method of SQRTM forming process carbon fiber grating based on water-soluble core

A water-soluble core and molding technology, applied in other home appliances, home appliances, household components, etc.

Inactive Publication Date: 2017-06-16
HENGSHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing carbon fiber grids based on the SQRTM molding process of water-soluble cores; it is used to solve the problems of complex curvature composite parts and reduce the manufacturing cost of composite materials

Method used

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  • Preparation method of SQRTM forming process carbon fiber grating based on water-soluble core
  • Preparation method of SQRTM forming process carbon fiber grating based on water-soluble core

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Effect test

Embodiment 1

[0030] Embodiment 1: as Figure 1~2 As shown, the preparation method of the grid based on the SQRTM molding process of the water-soluble core may further comprise the steps:

[0031] (1) Preparation of the soluble mandrel: first put the soluble mandrel material into the mandrel cavity, and compact the soluble mandrel material through the mold fastening bolts; then put it into an oven for curing, the curing temperature is: 120°C, The curing time is 2 hours, cool to below 60°C and open the oven to take it out; the mandrel after drying and molding is as follows: figure 1 As shown, in order to ensure the surface smoothness of the workpiece, the surface of the molded mandrel is sealed with a surface sealant, and the composite material is laid in the later stage;

[0032] (2) Carry out carbon fiber prepreg paving on the water-soluble mandrel, adopt SQRTM (Same Qualified Resin Transfer Molding) molding process to cure the part, and make the grid part;

[0033] (3) Dissolve the wate...

Embodiment 2

[0039] Embodiment 2: the preparation method of the grid based on the SQRTM molding process of this water-soluble core, comprises the following steps:

[0040] (1) Preparation of soluble mandrel: first put the soluble mandrel material (gypsum) into the mandrel cavity, and compact the soluble mandrel material through the mold fastening bolts; then put it into an oven for curing, and the curing temperature is: 100°C, curing time is 3h, cool down to below 60°C and open the oven to take out; the core mold after drying is as follows figure 1 As shown, in order to ensure the surface smoothness of the workpiece, the surface of the molded mandrel is sealed with a surface sealant, and the composite material is laid in the later stage;

[0041] (2) Carry out carbon fiber prepreg paving on the water-soluble mandrel, adopt SQRTM (Same Qualified Resin Transfer Molding) molding process to cure the part, and make the grid part;

[0042] (3) Dissolve the water-soluble mandrel with tap water, ...

Embodiment 3

[0047] Embodiment 3: the preparation method of the grid of the SQRTM molding process based on the water-soluble core, comprises the following steps:

[0048] (1) Preparation of soluble mandrel: firstly put the soluble mandrel material (soluble silicate) into the mandrel cavity, and compact the soluble mandrel material through the mold fastening bolts; then put it into the oven for curing, curing The temperature is: 140°C, the curing time is 1h, cool down to below 60°C, open the oven and take it out; the core mold after drying and forming is as follows: figure 1 As shown, in order to ensure the surface smoothness of the workpiece, the surface of the molded mandrel is sealed with a surface sealant, and the composite material is laid in the later stage;

[0049] (2) Carry out carbon fiber prepreg paving on the water-soluble mandrel, adopt SQRTM (Same Qualified Resin Transfer Molding) molding process to cure the part, and make the grid part;

[0050] (3) Dissolve the water-solubl...

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Abstract

The invention relates to a method for preparing a carbon fiber grid based on the SQRTM molding process of a water-soluble core. The method first prepares a grid core with a soluble material, and lays carbon fiber prepreg on it, and adopts SQRTM molding The process is to solidify the part, and in the later stage, the water-soluble mandrel is dissolved by tap water under a certain pressure, and the grille part is obtained by demoulding. This method solves the demoulding problem of complex parts with high curvature of the grid. The SQRTM process adopted, combined with the prepreg process and liquid RTM molding technology, effectively reduces the manufacturing cost and guarantees The high performance requirements of the parts are met. This invention can provide a feasible solution for composite aviation complex curvature parts.

Description

technical field [0001] The invention relates to the technical field of a composite material molding method, in particular to a method for preparing a carbon fiber grid based on a water-soluble core using a SQRTM molding process. Background technique [0002] Carbon fiber reinforced resin matrix composite material (CFRP) is one of the most advanced composite materials at present. It has the characteristics of high specific strength and specific stiffness, small thermal expansion coefficient, strong fatigue resistance, strong designability, and easy integral molding. It can effectively reduce the The structural quality of aerospace components is an inevitable trend in the development of new aerospace materials. At present, the amount of carbon fiber composite materials used in small business jets and helicopters has accounted for about 55%, about 25% for military aircraft, and about 20% for large passenger aircraft. [0003] A large number of applications of composite materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36B29C70/54B29L31/30
CPCB29C70/36B29C70/54B29L2031/30
Inventor 刘娇刘欢李泽英陈永乐刘伟
Owner HENGSHEN
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