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Composite functional prepreg material and preparation method thereof

A composite function and prepreg technology, applied in the field of prepreg, can solve problems such as enhancing tensile or compressive strength, dimensional deformation, and reducing costs

Active Publication Date: 2017-11-10
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a method for preparing a composite functional prepreg to improve the dimensional deformation caused by mixing and laying up different fibers, and at the same time achieve the purpose of enhancing tensile or compressive strength and reducing costs

Method used

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  • Composite functional prepreg material and preparation method thereof
  • Composite functional prepreg material and preparation method thereof
  • Composite functional prepreg material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] After mixing carbon fiber and quartz fiber, epoxy resin is used to make a mixed weaving prepreg of carbon fiber and quartz fiber. Among them, the volume content of carbon fiber in the mixed prepreg accounts for 30% of the total proportion, and the volume content of quartz fiber accounts for 30% of the total. The proportion is 30%, the volume content of epoxy resin is 40% of the overall proportion, and the epoxy resin is double-sided coated. The carbon fiber prepreg and the quartz fiber prepreg were prepared respectively by the same method, with the same epoxy resin content, and only the fiber was replaced by a single fiber. Then, layering is carried out, the carbon fiber prepreg is used as the bottom layer, the mixed braided prepreg is used as the middle layer, and the quartz fiber prepreg is used as the top layer, and the functional part 1 is obtained by vacuum bag pressure curing. The carbon fiber prepreg is used as the bottom layer, another carbon fiber prepreg is us...

Embodiment 2

[0028] After mixing carbon fiber and glass fiber, cyanate resin is used to make a mixed weaving prepreg of carbon fiber and glass fiber. Among them, the volume content of carbon fiber in the mixed prepreg accounts for 50% of the overall proportion, and the volume content of glass fiber accounts for 50%. The overall proportion is 20%, the volume content of the cyanate resin accounts for 30% of the overall proportion, and the cyanate resin is double-sided coated. Carbon fiber prepregs and glass fiber prepregs were prepared by the same method, with the same content of cyanate resin, and only the fiber was replaced by a single fiber. Then, lay up layers, using carbon fiber prepreg as the bottom layer, mixed braided prepreg as the middle layer, and glass fiber prepreg as the top layer, and the functional part 4 is obtained by vacuum bag pressure curing. The carbon fiber prepreg is used as the bottom layer, another carbon fiber prepreg is used as the middle layer, and the glass fibe...

Embodiment 3

[0030] After mixing carbon fiber and aramid fiber, bismaleic anhydride resin is used to make a mixed weaving prepreg of carbon fiber and aramid fiber. Among them, the volume content of carbon fiber in the mixed prepreg accounts for 70% of the total proportion, and aramid fiber The volume content of bismaleic anhydride resin accounts for 10% of the overall proportion, the volume content of bismaleic anhydride resin accounts for 20% of the overall proportion, and the bismaleic anhydride resin is double-sided coated. The carbon fiber prepreg and the aramid fiber prepreg were prepared respectively by the same method, with the same bismaleic anhydride resin content, and only the fiber was replaced by a single fiber. Then, layering is carried out, the carbon fiber prepreg is used as the bottom layer, the mixed braided prepreg is used as the middle layer, and the aramid fiber prepreg is used as the top layer, and the functional part 7 is obtained by curing in a vacuum bag. The carbon...

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Abstract

The invention provides a composite functional prepreg material and a preparation method thereof. The preparation method comprises the following steps: carbon fibers and another kind of fibers are mixed and woven, so that mixed and woven fibers are obtained; resin is used to coat the mixed and woven fibers, thus a mixed and woven prepreg material is obtained; lay-up molding is performed on the mixed and woven prepreg material; and curing molding is performed on the mixed and woven prepreg material. The mixed and woven fiber prepreg material is used, so that the deformation quantity brought by shrinkage deformation caused by direct lamination of two kinds of single fibers is reduced, and the outline dimension accuracy of parts is improved.

Description

technical field [0001] The present invention relates to a prepreg, more specifically, to a composite functional prepreg and a preparation method thereof. Background technique [0002] With the popularization and application of composite materials, more and more fields begin to apply composite materials. In the prior art, two commonly used composite materials are glass fiber reinforced composite materials and carbon fiber reinforced composite materials. [0003] In the production process of composite materials, in order to achieve certain functions, different types of fiber prepregs are used in different layers to mix and lay up and solidify. Due to the different deformations of different layers of fibers (carbon fibers, glass fibers, aramid fibers, etc.) during the thermal curing process, the cured molded parts are severely deformed and the dimensional stability is difficult to guarantee. [0004] In addition, in composite materials, due to the different thermal expansion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L79/04C08L79/08C08L77/10C08L61/06C08K7/06C08K7/10C08K7/14
CPCC08K7/06C08K7/10C08K7/14C08L61/06C08L79/08C08L2205/16C08L63/00C08L79/04C08L77/10
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH
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