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Preparation method of modified polyether-ether-ketone resin-based sizing agent for carbon fiber

A technology of polyether ether ketone resin and polyether ether ketone, which is applied in the field of preparation of modified polyether ether ketone resin-based sizing agents for carbon fibers, can solve the problems of poor high temperature resistance, difficulty in improving the interface bonding between carbon fiber and resin matrix, and resin Problems such as poor matrix compatibility

Inactive Publication Date: 2019-06-25
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in the existing carbon fiber sizing agent technology, the CF / PEEK composite material sizing agent has poor high temperature resistance, poor compatibility with the resin matrix, and it is difficult to improve the interfacial bonding between the carbon fiber and the resin matrix , the technical problem of poor mechanical properties of composite materials

Method used

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  • Preparation method of modified polyether-ether-ketone resin-based sizing agent for carbon fiber

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preparation example Construction

[0024] See figure 1 , figure 1 It is a flow chart of a preparation method of a modified polyetheretherketone resin-based sizing agent for carbon fibers provided by an embodiment of the present invention. An embodiment of the present invention provides a method for preparing a modified polyetheretherketone resin-based sizing agent for carbon fibers. The method for preparing a modified polyetheretherketone resin-based sizing agent for carbon fibers includes:

[0025] Step S100, take an appropriate amount of polyetheretherketone powder and perform the first chemical modification to obtain derivatives of polyetheretherketone. Wherein, the first chemical modification is sulfonation modification or hydroxylation modification. When the first chemical modification is sulfonation modification, the polyether ether ketone powder is obtained through the sulfonation modification to obtain PEEK- SO 3 Na, PEEK is polyether ether ketone, PEEK-SO 3 Na is a sulfonated derivative of polyethe...

Embodiment 1

[0030] (1) Add concentrated sulfuric acid with a volume of 100ml and dried PEEK powder with a mass of 2g into a three-necked flask, and perform mechanical stirring.

[0031] (2) Raise the temperature to 50° C. and react for 3 hours; then let stand to cool.

[0032] (3) Add the reacted solution drop by drop into sodium hydroxide (NaOH) solution, filter and dry to obtain the sulfonated derivative of PEEK, denoted as PEEK-SO 3 Na.

[0033] (4) Take 1g of carbon nanotube (CNT) and put it into a conical flask with a volume of 100ml, add concentrated nitric acid with a volume of 15ml and concentrated sulfuric acid with a volume of 45ml in turn, and shake well at the same time.

[0034] (5) Put the Erlenmeyer bottle into the ultrasonic instrument for 6 hours of ultrasonication. During the ultrasonication process, use an ice pack to prevent the temperature from being too high, and cool to room temperature after the end.

[0035] (6) Centrifugal separation, recovery of excess mixed a...

Embodiment 2

[0039] (1) Add concentrated sulfuric acid with a volume of 100ml and dried PEEK powder with a mass of 2g into a three-necked flask, and perform mechanical stirring.

[0040] (2) Raise the temperature to 50° C. and react for 3 hours; then let stand to cool.

[0041] (3) Add the reacted solution drop by drop into the NaOH solution, filter and dry to obtain the sulfonated derivative of PEEK, denoted as PEEK-SO 3 Na.

[0042] (4) Measure concentrated sulfuric acid with a volume of 46ml in a three-necked flask, place it in an ice bath to below 0°C, add graphite with a mass of 2g and sodium nitrate with a mass of 1g in sequence, and after stirring for one hour, slowly add 6g of high-quality sulfuric acid Potassium manganate, control the temperature not to exceed 20°C.

[0043] (5) Place the reaction in an oil bath, stir and react at 40°C for 0.5 hours, then add deionized water with a volume of 92ml, raise the temperature to 92°C and stir for 0.5 hours, finally add deionized water ...

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Abstract

The invention discloses a preparation method of a modified polyether-ether-ketone resin-based sizing agent for carbon fiber, and belongs to the technical field of carbon fiber sizing agents. The method comprises the steps that an appropriate amount of polyether-ether-ketone powder is taken for first chemical modification, and a polyether-ether-ketone derivative is obtained; a carbon nano materialis subjected to second chemical modification so as to obtain a carbon nano modified product; the polyether-ethe- ketone derivative is dissolved into an organic solvent, the carbon nano modified product is added, and the sizing agent is obtained after uniform dispersion. Accordingly, the high temperature resistance of the carbon fiber / polyether-ether-ketone (CF / PEEK) composite material sizing agentis improved, the compatibility of the sizing agent and the polyether-ether-ketone (PEEK) resin is good, interface bonding of the carbon fiber and a resin matrix can be significantly improved, and thetechnical effect of the mechanical property of the composite material is improved.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber sizing agents, and in particular relates to a preparation method of a modified polyether ether ketone resin-based sizing agent for carbon fibers. Background technique [0002] Carbon fiber / polyether ether ketone (CF / PEEK) composite material has the characteristics of high specific strength and specific stiffness, good heat resistance, excellent fatigue resistance and corrosion resistance, and is widely used in aerospace, wind power generation, automobile manufacturing, chemical anticorrosion and other fields. For example, in the field of aviation, it can greatly reduce the structural weight of aircraft, reduce fuel consumption, reduce pollution, and improve aircraft life and safety. [0003] For the existing carbon fiber sizing agent technology, due to the high inertia of the carbon fiber surface, the wetting and bonding with the matrix resin is poor. In addition, carbon fiber is a brittle ...

Claims

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Application Information

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IPC IPC(8): D06M15/41D06M11/74C08G8/02D06M101/40
Inventor 黄志高赖敏龙周华民蒋林王云明张云王旭康
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
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