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Manufacturing method of carbon fiber shell

A technology of carbon fiber shell and manufacturing method, which is applied in the direction of coating, etc., can solve the problems of easy falling off of carbon fiber film and insufficient strength, and achieve the effects of shortening the molding cycle, not easy to fall off, and excellent mechanical properties

Inactive Publication Date: 2011-12-21
GUANGDONG JANUS SMART GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this patent, the plastic and the carbon fiber film are directly bonded together through the fluidity of the thermoplastic and the temperature of the injection mold. The strength of the bond is not enough, and the carbon fiber film is easy to fall off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Choose 1K plain weave pure carbon fiber braided material as the raw material, put the raw material into epoxy resin for pre-impregnation, then cut the pre-impregnated carbon fiber material into the desired shape and size, and heat it on the hot-press molding machine Press and solidify for 10 minutes, wherein the hot pressing temperature is 120° C. and the hot pressing pressure is 4 MPa, and then the mold is opened after cooling.

[0028] 2. Process the solidified carbon fiber sheet to the required structure on the CNC equipment, such as edge trimming, drilling, etc.

[0029] 3. A hot-melt adhesive layer is formed on the surface of the carbon fiber sheet by spraying, and the hot-melt adhesive in the hot-melt adhesive layer is epoxy adhesive.

[0030] 4. Put the carbon fiber sheet sprayed with a hot melt adhesive layer into the injection mold of the injection molding machine for injection molding. The carbon fiber sheet and plastic material are bonded together by epoxy...

Embodiment 2

[0038] 1. Choose 3K twill carbon fiber and aramid mixed colored fiber braided material as raw material, put the raw material into epoxy resin for pre-impregnation, and then cut the pre-impregnated carbon fiber material into the desired shape and size , hot-pressed and solidified on a hot-press molding machine for 15 minutes, wherein the hot-pressing temperature is 140° C., and the hot-pressing pressure is 3 MPa, and then the mold is opened after cooling.

[0039] 2. Process the solidified carbon fiber sheet to the required structure on the CNC equipment, such as edge trimming, drilling, etc.

[0040] 3. A hot-melt adhesive layer is formed on the surface of the carbon fiber sheet by spraying, and the hot-melt adhesive in the hot-melt adhesive layer is epoxy adhesive.

[0041] 4. Put the carbon fiber sheet sprayed with the hot melt adhesive layer into the injection mold of the injection molding machine for injection molding, bond the carbon fiber sheet and the plastic material t...

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Abstract

The invention discloses a manufacturing method of a carbon fiber shell. The manufacturing method of the carbon fiber shell comprises the following steps of: preprocessing: weaving carbon fiber tows into a certain structure, and then pre-dipping the weaved carbon fiber materials in resin; hot embossing and curing: carrying out the operations of hot embossing and curing to the carbon fiber materials pre-dipped in resin on a hot embossing machine, obtaining carbon fiber sheets, and then cooling and demolding; processing: processing the carbon fiber sheets into a required structure on a CNC (computer numerical control) machine; in-mold injection molding: spraying hot melt adhesive on the carbon fiber sheets, drying and then putting the processed carbon fiber sheets into an injection mold of the injection molding machine to be molded into products; and surface processing: oiling, polishing and printing the surface of products, and the like. In the manufacturing method, the hot melt adhesive is melted at the high temperature of the plastic materials when in injection molding, thus the plastic materials and the carbon fiber sheets are bonded together, and the carbon fiber sheets cannot drop off easily.

Description

Technical field: [0001] The invention relates to the technical field of carbon fiber processing, in particular to a method for manufacturing a carbon fiber shell. Background technique: [0002] Carbon fiber is a new chemical material with two characteristics of strong tensile strength of carbon material and soft processability of fiber. It is a new generation of reinforcing fiber. Its density is less than 1 / 4 of that of steel, but its tensile strength is 7 to 9 times that of steel, and its tensile elasticity is also higher than that of steel; compared with traditional glass fiber (GF), Young's modulus (referring to characterization In the elastic limit, the physical quantity of the material material in tension or compression) is more than three times that. Its weight is lighter than metal aluminum, but its strength is higher than that of steel, and it has the characteristics of corrosion resistance and high modulus. It is an important material in national defense, military ...

Claims

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Application Information

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IPC IPC(8): B29B15/10B29C35/02B29C45/14B29C71/00
Inventor 陈盛洪王书红
Owner GUANGDONG JANUS SMART GRP CO LTD
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