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Process for attaching plastic film layer to carbon fiber surface layer

A technology of plastic film layer and carbon fiber, applied in the direction of coating, can solve the problem of high production cost, and achieve the effect of simplifying the production process, improving the mechanical properties of the product, and reducing the processing technology

Inactive Publication Date: 2016-08-03
KA SHUI TECH HUIZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the material characteristics of carbon fiber, it is not easy to manufacture or the production cost is too high for relatively small and complex structures, such as buckles, undercuts, screw posts, ribs and other structures. In-mold injection molding process (IML) to complete complex structures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) The carbon fiber is superimposed at different angles such as 0 degrees, 90 degrees or 45 degrees to form the required thickness, and finally the plastic film layer is pasted on the upper and lower surfaces,

[0022] 2) Cut the carbon fiber dimension and the plastic film layer into the required size of the product, put it into a hot pressing mold, and hot press molding,

[0023] 3) The solid carbon fiber-reinforced composite material is obtained by hot-pressing the above process, the surface layer of the sample has been attached to the film layer, and the required sample is made by CNC or water cutting.

[0024] 4) Finally, put the sample into a plastic mold and inject it into the mold to make the plastic and carbon fiber seamlessly connected. Complete fusion, improve its combined mechanical properties, etc. the whole process.

Embodiment 2

[0026] A method for preparing a product utilizing a carbon fiber surface layer attached to a plastic film layer, comprising the following steps,

[0027] S1. Lay a plastic film layer on the surface of the carbon fiber, and then use a hot pressing process to obtain a solid carbon fiber reinforced composite material. The temperature of the hot pressing process is 150~200°C, and the time is 50~450s. The material of the plastic film layer is polyethylene plastic;

[0028] S2. Carry out water cutting of solid carbon fiber reinforced composite material to obtain solid carbon fiber reinforced composite material of desired shape,

[0029] S3. Put the solid carbon fiber-reinforced composite material in the desired shape obtained in S2 into a mold, and perform in-mold injection molding. The raw material used in the in-mold injection molding is PC.

Embodiment 3

[0031] A method for preparing a product utilizing a carbon fiber surface layer attached to a plastic film layer, comprising the following steps,

[0032] S1. Lay a plastic film layer on the surface of the carbon fiber, and then use a hot pressing process to obtain a solid carbon fiber reinforced composite material. The temperature of the hot pressing process is 150~200°C, and the time is 50~450s. The material of the plastic film layer is polyethylene plastic;

[0033] S2. CNC the solid carbon fiber reinforced composite material to obtain the desired shape of the solid carbon fiber reinforced composite material,

[0034] S3. Put the solid carbon fiber-reinforced composite material in the desired shape obtained in S2 into a mold, and perform in-mold injection molding. The raw material used for in-mold injection molding is PP.

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PUM

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Abstract

The invention discloses a preparation method for preparing a product by attaching a plastic film layer to a carbon fiber surface layer. The preparation method comprises the steps of: S1, laying the plastic film layer on a carbon fiber surface, then obtaining a solid-state carbon fiber reinforced composite by using a hot pressing process; S2, processing the solid-state carbon fiber reinforced composite to obtain a solid-state carbon fiber reinforced composite in a required shape; and S3, putting the solid-state carbon fiber reinforced composite in the required shape obtained by the step S2 into a die and carrying out injection molding in the die. Through the preparation method, the plastic film layer is adopted, so that the binding force between the plastic and the carbon fiber is greatly improved, and thus the mechanical performance of the product is greatly improved in the absence of glue.

Description

technical field [0001] The invention relates to the field of composite materials, more specifically, to a process for attaching a plastic film layer to a carbon fiber surface. Background technique [0002] Carbon fiber is a new material with excellent mechanical properties. Its specific gravity is less than 1 / 4 of that of steel. The tensile strength of carbon fiber resin composite (CFRP) is generally above 3500Mpa, which is 7 to 9 times that of steel. Tensile elastic modulus The amount of 230 ~ 430Gpa is also higher than that of steel. Therefore, the specific strength of CFRP, that is, the ratio of the strength of the material to its density, can reach more than 2000Mpa / (g / cm3), while the specific strength of A3 steel is only about 59Mpa / (g / cm3), and its specific modulus is also higher than that of steel. In this sense, the broad prospects of carbon fiber have been predicted, from civil industries such as aerospace, aviation, automobiles, electronics, machinery, chemicals, ...

Claims

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Application Information

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IPC IPC(8): B29C45/14
CPCB29C45/14311
Inventor 李远发谭魏谢光亮唐维才黄维中陈善荣宋卓能铃木良久
Owner KA SHUI TECH HUIZHOU CO LTD
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