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Surface modified fibre for filling reinforcement, preparation method of surface modified fibre for filling reinforcement, and fibre reinforced composite material

A technology of surface modification and composite materials, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., which can solve problems such as low shear strength, poor composite effect of fiber and matrix, and damage to the mechanical properties of fiber precursors. Mechanical properties, improvement of fiber surface properties, and enhancement of interfacial bonding

Active Publication Date: 2020-04-10
威海蓝科复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a surface-modified fiber for filling and reinforcement to solve the problem of poor composite effect between the modified fiber and the matrix
[0005] Another object of the present invention is to provide a method for preparing surface-modified fibers for filling and reinforcement, so as to solve the problem of existing fiber surface modification methods on fiber precursors. The mechanical properties have the problem of damage
[0006] The third purpose of the present invention is to provide a fiber-reinforced composite material to solve the problem of low shear strength of existing fiber composite materials

Method used

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  • Surface modified fibre for filling reinforcement, preparation method of surface modified fibre for filling reinforcement, and fibre reinforced composite material
  • Surface modified fibre for filling reinforcement, preparation method of surface modified fibre for filling reinforcement, and fibre reinforced composite material
  • Surface modified fibre for filling reinforcement, preparation method of surface modified fibre for filling reinforcement, and fibre reinforced composite material

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Embodiment 1

[0034] The surface-modified fiber for filling and reinforcement in this embodiment consists of a fiber body and a hybrid coating loaded on the surface of the fiber body. The hybrid coating consists of a polyvinyl alcohol matrix and graphene oxide dispersed in the polyvinyl alcohol matrix Composition, the mass ratio of polyvinyl alcohol and graphene oxide in the hybrid coating is 5:0.1, and the sheet thickness of graphene oxide is 3-8nm. The fiber body is carbon fiber and glass fiber with a volume ratio of 1:1. In other implementations, a single fiber may be used, such as carbon fiber or glass fiber.

[0035] The scanning electron microscope images of the glass fiber surface before and after surface modification are as follows: figure 1 with figure 2 As shown, the scanning electron microscope images of the carbon fiber surface before and after surface modification are as follows image 3 with Figure 4 As shown, the comparison shows that the surface of glass fiber and carb...

Embodiment 2

[0037] The surface-modified fiber for filling and reinforcement in this embodiment consists of a fiber body and a hybrid coating loaded on the surface of the fiber body. The hybrid coating consists of a polyvinyl alcohol matrix and graphene oxide dispersed in the polyvinyl alcohol matrix Composition, the mass ratio of polyvinyl alcohol and graphene oxide in the hybrid coating is 0.5:5, and the sheet thickness of graphene oxide is 3-8nm. The fiber body is carbon fiber and glass fiber with a volume ratio of 1:1.

Embodiment 3

[0039]The surface-modified fiber for filling and reinforcement in this embodiment consists of a fiber body and a hybrid coating loaded on the surface of the fiber body. The hybrid coating consists of a polyvinyl alcohol matrix and graphene oxide dispersed in the polyvinyl alcohol matrix Composition, the mass ratio of polyvinyl alcohol and graphene oxide in the hybrid coating is 2:3, and the sheet thickness of graphene oxide is 3-8nm. The fiber body is carbon fiber and glass fiber with a volume ratio of 1:1.

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Abstract

The invention belongs to the field of composite materials, and in particular relates to a surface modified fibre for filling reinforcement, a preparation method of the surface modified fibre for filling reinforcement, and a fibre reinforced composite material. The surface modified fibre for filling reinforcement is composed of a fibre body and a hybrid coating loaded on the surface of the fibre body; the hybrid coating is composed of a polyvinyl alcohol basal body and a carbon based nano-material dispersed in the polyvinyl alcohol basal body; and the mass ratio of polyvinyl alcohol to the carbon based nano-material in the hybrid coating is (0.5-5):(0.1-5). By means of the surface modified fibre for filling reinforcement in the invention, the surface roughness and the surface energy of thefibre can be increased; when the fibre reinforced composite material is prepared, the composite effect of the fibre and the basal body can be improved; the density of an interface layer is increased;and the composite strength is increased.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a surface-modified fiber for filling and reinforcement, a preparation method thereof, and a fiber-reinforced composite material. Background technique [0002] Fiber-reinforced composite materials are composite materials that use fibers as reinforcing agents to reinforce various matrices, which can overcome the shortcomings of a single material and meet the needs of actual use. However, the weak interfacial bonding force between the fiber and the matrix limits the high performance of the fiber and makes the composite material exhibit extremely low shear strength. In order to improve the comprehensive mechanical properties of composite materials and expand the application fields of fiber composite materials, the surface of fibers is often modified to improve the interfacial bonding force between fibers and the matrix. [0003] Fiber surface modification usually chang...

Claims

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Application Information

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IPC IPC(8): D06M15/333D06M11/74C08J5/06C08J5/08C08K9/04C08K9/02C08K7/14C08K7/06C03C25/47C03C25/44C03C25/28D06M101/40C08L75/04
CPCD06M15/333D06M11/74C08J5/06C08J5/08C08K9/08C08K9/02C08K7/14C08K7/06C03C25/47C03C25/44C03C25/28D06M2101/40C08J2375/04
Inventor 赫玉欣陈秋宇吴东阳周梦阳陆昶姚大虎高喜平王晓余志强
Owner 威海蓝科复合材料科技有限公司
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