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A method for manufacturing high fluidity carbon fiber reinforced sheet molding material

A high-fluidity, carbon fiber technology, applied in the field of manufacturing carbon fiber sheet molding materials, can solve problems such as not being applied on a large scale, and achieve the effects of improving performance, improving material fluidity, and improving fluidity

Active Publication Date: 2021-09-03
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although discontinuous carbon fiber molding materials emerge in endlessly, they have not been applied on a large scale until now.

Method used

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  • A method for manufacturing high fluidity carbon fiber reinforced sheet molding material
  • A method for manufacturing high fluidity carbon fiber reinforced sheet molding material
  • A method for manufacturing high fluidity carbon fiber reinforced sheet molding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for manufacturing a high fluidity carbon fiber reinforced sheet molding material, comprising the following steps:

[0041] (1) Put the solid matrix epoxy resin, powdery epoxy resin curing agent, and powdery accelerator into a ball mill for grinding and mixing according to the mass ratio of 100:5:2 to obtain compounded epoxy resin powder, particle size Below 200 mesh.

[0042] (2) Put a certain amount of compounded epoxy resin powder mixture with a certain amount of hollow glass microspheres and powdery carbon fiber in a high-speed mixer according to a mass ratio of 100:15:15 for mixing to obtain a powder mixture.

[0043] (3) The powder mixture and discontinuous carbon fiber bundles are sent to the air-laying device at a mass ratio of 100:100 for air-laying, hot-press bonding, and cooling to obtain a carbon fiber-reinforced sheet molding material. The mechanical properties and dispersion coefficients of the obtained molded materials are shown in Table 1.

Embodiment 2

[0045] The epoxy resin powder compounded in step (2) is mixed with hollow glass microspheres and powdery carbon fiber according to a mass ratio of 100:15:5 to prepare a powdery mixture, and the rest are the same as in Example 1. The obtained molded The mechanical properties and dispersion coefficients of the materials are shown in Table 1.

Embodiment 3

[0047] The epoxy resin powder compounded in step (2) is mixed with hollow glass microspheres and powdery carbon fiber according to a mass ratio of 100:5:15 to prepare a powdery mixture, and the rest are the same as in Example 1, and the obtained molded The mechanical properties and dispersion coefficients of the materials are shown in Table 1.

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Abstract

The invention relates to a method for manufacturing a high fluidity carbon fiber reinforced sheet molding material. The solid matrix epoxy resin, powdered epoxy resin curing agent and powdered accelerator are first ground, then mixed with hollow glass microspheres and powdered carbon fibers to obtain a powder mixture, and then mixed with discontinuous carbon fiber bundles in a dry-laid paper machine Air-laid, hot-press bonded, and cooled to obtain highly fluid carbon fiber-reinforced sheet molding materials. The molding material has good fluidity, and can be used in the molding process to prepare large flat-shaped parts with relatively complex structures. The fiber content and mechanical properties of each part of the parts are relatively uniform, and the performance is excellent, and the surface finish is high.

Description

technical field [0001] The invention relates to a manufacturing method of a carbon fiber sheet molding material, in particular to a manufacturing method of a discontinuous carbon fiber reinforced epoxy resin molding material. Background technique [0002] Carbon fiber composite materials have been widely used in aerospace, transportation, sports equipment and other fields due to their high strength, high modulus, low density, and corrosion resistance. At present, in carbon fiber composite materials, carbon fibers mainly exist in the form of continuous fibers, which are formed by molding, autoclave, vacuum introduction and other processes after laying prepreg materials. It is difficult to prepare parts with complex structures, and it takes a long time. And the follow-up processes such as soil filling, grinding, and painting are relatively cumbersome. [0003] Glass fiber SMC material is a very mature molding material, which is widely used in sanitary ware, electrical insulat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K7/06C08K9/06C08K7/28C08J5/04
Inventor 黄险波马雷范欣愉孙雅杰李晓拓熊鑫蒲颖邓荣坚宋威陈大华
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV