Carbon fiber sizing method

A carbon fiber and sizing agent technology, applied in the field of fiber manufacturing, can solve the problems of easy adhesion and curing of resin components, and the reduction of carbon fiber sizing amount, etc., to reduce the adhesion and curing phenomenon of sizing agent, control the concentration easily, and improve the effect of uniformity

Inactive Publication Date: 2015-02-18
JIANGSU HANGKE COMPOSITE MATERIALS TECH
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Problems solved by technology

[0008] The purpose of the present invention is to provide a carbon fiber sizing method that can effectively improve the uniformity of sizing, make the concentration of the sizing agent in the sizing tank easier to control, and at the same time significantly reduce the curing phenomenon of the sizing agent on the pressure roller, and solve the problem of sizing The resin component in the agent is easy to adhere and solidify, resulting in the phenomenon of sticking filaments and because the concentration of the sizing agent in the sizing tank continues to decrease, the sizing amount of the carbon fiber continues to decrease, resulting in differences in the amount of sizing between batches. question

Method used

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  • Carbon fiber sizing method

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Embodiment 1

[0032] 40 bundles of unsized carbon fibers (the number of filaments per bundle is 12,000) are evenly arranged and run on the roller surface with an interval of 10mm. fiber bundles through figure 1 The sizing tank of the sizing system shown performs sizing. The sizing agent in the sizing tank is a sizing agent emulsion, and its main active ingredients are liquid-phase epoxy resin and solid-phase epoxy resin, and the concentration of the active ingredients is 4.5%.

[0033] The steps of the sizing method are as follows:

[0034] Step 1: Dip the carbon fiber into the sizing tank through the guide roller for sizing;

[0035] Step 2: Conducting the sized carbon fiber through the guide roller to the pressure roller partially immersed in the sizing agent for extrusion;

[0036] Step 3: Conveying the extruded carbon fiber to the next process.

[0037] In the second step, a liquid return tank is arranged under the pressure roller, and the lower half of the pressure roller is immers...

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Abstract

The invention provides a carbon fiber sizing method. The carbon fiber sizing method has the advantages that the sizing uniformity is effectively improved, the concentration of a sizing agent in a sizing groove is easily controlled, and the curing of the sizing agent on a press roll is obviously reduced; the method also solves the problems of yarn adhering because of easy attaching and curing of resin in the sizing agent, and different sizing amount among batches because of continuous low concentration of the sizing agent in the sizing groove and continuous decrease of sizing amount of carbon fiber.

Description

technical field [0001] The invention relates to the field of fiber manufacturing, in particular to a carbon fiber sizing method that can effectively improve the uniformity of sizing, make it easier to control the concentration of a sizing agent in a sizing tank, and at the same time significantly reduce the curing phenomenon of the sizing agent on a pressure roller. Background technique [0002] Carbon fiber has the characteristics of high specific strength and high specific modulus, and its composite materials formed with various resins are widely used in the fields of aerospace, general industry and sports and entertainment products. The product properties of carbon fiber are mostly continuous fiber bundles. When preparing composite materials, the fiber bundles are usually laid out in a certain direction, or pre-woven into a fabric with a certain shape, and then impregnated with resin. Get composites. [0003] Carbon fiber itself is a brittle material. During the fiber pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B3/02D06B15/02D06B23/20
CPCD06B3/02D06B15/02D06B23/20
Inventor 王浩静张淑斌范立东顾红星薛林兵庞培乐程璐
Owner JIANGSU HANGKE COMPOSITE MATERIALS TECH
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