Hot-melt controllable carbon fiber thermoplastic pre-impregnated fabric structure and preparation method thereof

A technology of carbon fiber fabric and fabric structure, applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of high equipment requirements, high energy consumption of hot melt impregnation process, and difficulty in solvent discharge. Achieve flexible adjustment and solve the effect of uneven hot melt impregnation effect

Pending Publication Date: 2020-06-16
山东宽原新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of prepreg preparation methods, mainly including emulsion impregnation method, hot melt impregnation method, fluidized bed impregnation, etc., and different process methods have their own advantages and problems. For example, the emulsion impregnation method has the problem of difficult solvent discharge. , the process energy consumption of the hot melt impregnation method is relatively high, and the fluidized bed impregnation has high requirements for equipment

Method used

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  • Hot-melt controllable carbon fiber thermoplastic pre-impregnated fabric structure and preparation method thereof

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preparation example Construction

[0028] The second aspect of the present invention provides a method for preparing the above-mentioned heat-melt controllable carbon fiber thermoplastic prepreg fabric structure, including the following steps:

[0029] preparing a thermoplastic resin base film layer;

[0030] Spraying and processing a layer of thermoplastic resin particle layer on the inner surface of the thermoplastic resin base film layer;

[0031] The sizing agent is removed from the carbon fiber fabric, and the surface-treated carbon fiber fabric is pressed and hot-melted and laminated on the thermoplastic resin particle layer to obtain the finished product.

[0032] In some embodiments, the surface treatment method of the carbon fiber fabric is electrochemical oxidation or liquid phase oxidation.

[0033] In some embodiments, the temperature of pressurized hot melting is 10-30° C. higher than the melting point of the resin, and the pressure is 2-10 MPa.

Embodiment 1

[0035] Such as figure 1 As shown, the heat-melt controllable carbon fiber thermoplastic prepreg fabric structure is a layered structure, followed by a thermoplastic resin base film layer 1, a thermoplastic resin particle layer 2, and a laminated multi-dimensional carbon fiber fabric layer 3.

[0036] First, a 0.1 mm thick polyolefin thermoplastic film-like resin is used as the thermoplastic resin base film layer 1, and a layer of 2 μm particles with a thickness of 0.05 mm is processed by physical spraying on the inner surface of the thermoplastic resin base film layer 1 in contact with the carbon fiber fabric. diameter polyolefin thermoplastic resin layer (thermoplastic resin particle layer 2), forming a heat-melt controllable thermoplastic resin base film. After that, T300 carbon fibers are used in a unidirectional arrangement to form a laminated multi-dimensional carbon fiber fabric layer 3 with a width of 1 m. After the fiber fabric is processed, the sizing agent is removed...

Embodiment 2

[0038] Such as figure 1 As shown, the heat-melt controllable carbon fiber thermoplastic prepreg fabric structure is a layered structure, followed by a thermoplastic resin base film layer 1, a thermoplastic resin particle layer 2, and a laminated multi-dimensional carbon fiber fabric layer 3.

[0039] First, a 0.3mm thick polyamide thermoplastic film-like resin is used as the thermoplastic resin base film layer 1, and a layer of 3 μm particle diameter with a thickness of 0.3 mm is processed by physical spraying on the inner surface of the thermoplastic resin base film layer 1 in contact with the carbon fiber fabric. The polyamide thermoplastic resin layer forms a heat-melt controllable thermoplastic resin base film. After that, T700 carbon fibers are used in a satin pattern to form a fabric layer with a width of 1.6m. After the fiber fabric is processed, the sizing agent is removed and the surface is activated. Finally, the continuous pressurized hot-melt method is used to sup...

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Abstract

The invention discloses a hot-melt controllable carbon fiber thermoplastic pre-impregnated fabric structure and a preparation method thereof; the hot-melt controllable carbon fiber thermoplastic pre-impregnated fabric structure is a layered structure, and sequentially comprises a thermoplastic resin substrate adhesive film layer, a thermoplastic resin particle layer and a laminated multi-dimensional carbon fiber fabric layer; the thickness of the thermoplastic resin particle layer is 0.05-1 mm, and the particle size of resin particles is 1-10 [mu]m. The laminated multi-dimensional carbon fiberfabric layer is formed by laminating a plurality of layers of planar fabrics. The structure of the pre-impregnated fabric can ensure the production efficiency, can control the hot melting impregnation speed and the impregnation effect, and can avoid adverse effects of a solvent on the structural compactness of the pre-impregnated fabric.

Description

technical field [0001] The invention belongs to the field of carbon fiber prepreg fabrics, in particular to a heat-melt controllable carbon fiber thermoplastic prepreg fabric structure and a preparation method thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Carbon fiber thermoplastic fabric is a key intermediate product currently used in the preparation of carbon fiber thermoplastic composite materials. The prepreg fabric achieves effective reinforcement in all directions of the composite material through the multi-dimensional arrangement of fibers. While ensuring mechanical rigidity, it effectively improves the performance of comprehensive mechanical properties ...

Claims

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Application Information

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IPC IPC(8): B32B27/34B32B27/40B32B27/32B32B27/28B32B9/00B32B27/14B32B27/12B32B27/06B32B9/04B29C70/34
CPCB29C70/34B32B5/02B32B5/30B32B9/048B32B27/06B32B27/12B32B27/14B32B27/288B32B27/32B32B27/34B32B27/40B32B2250/03B32B2262/106B32B2264/0214B32B2264/0257B32B2264/0264B32B2264/0292
Inventor 朱波曹伟伟赵圣尧乔琨王永伟
Owner 山东宽原新材料科技有限公司
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