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High-temperature-resistant water-based carbon fiber universal sizing agent and preparation method and application thereof

A carbon fiber, high temperature resistant technology, applied in the direction of carbon fiber, fiber processing, fiber type, etc., can solve the problems of high price, the influence of composite materials use and subsequent use, graphene oxide is easy to agglomerate, etc., to achieve increased heat resistance and mechanical properties. , Excellent damp heat stability, good environmental adaptability

Active Publication Date: 2021-09-24
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sizing agent used in this patent is still an acidic solution, which is more harmful to the environment and the human body, and its application range is small, limited to the manufacture and use of polyether ether ketone resin-based composite materials
In addition, the use of graphene oxide in this patent has the problems of easy agglomeration, high price, and complicated preparation process, which will affect the use and subsequent use of composite materials

Method used

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  • High-temperature-resistant water-based carbon fiber universal sizing agent and preparation method and application thereof
  • High-temperature-resistant water-based carbon fiber universal sizing agent and preparation method and application thereof
  • High-temperature-resistant water-based carbon fiber universal sizing agent and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Weight ratio Weigh 1 part of polyether ketone ketone powder and 10 parts of concentrated sulfuric acid, add the two into a reaction flask, control the reaction temperature at 30°C and stir for 72 hours. Then the product was slowly added dropwise into deionized water in an ice-water bath, and after the two were fully stirred, the mixture was separated by centrifugation. Subsequently, the mixture was washed with a large amount of deionized water, and ultrasonic dispersion and centrifugation were repeated until the sulfuric acid in the mixture was washed away. Then deionized water was added to the product again to adjust the pH value to 7. The product was separated by suction filtration, the solid matter was transferred to an oven, and the temperature was controlled at 60° C. for drying for about 12 hours. Finally, light yellow sulfonated polyether ketone ketone powder is obtained, which is stored in a vacuum desiccator.

[0043] Weigh the sulfonated polyether ketone ket...

Embodiment 2

[0045] Sulfonated polyether ketone ketone powder was prepared according to the method of Example 1.

[0046] Weigh the sulfonated polyether ketone ketone according to the weight ratio, add it into deionized water, stir at 60° C. at a speed of 250 r / min for 2 hours, and obtain a uniform water-based sizing agent. The concentration of sulfonated polyether ketone ketone is 2% in proportion. Then the original continuous carbon fiber with 70% of the total weight of the sizing agent was weighed, its surface was cleaned with ethanol and deionized water, and then placed in an oven for drying. Then soak the surface-treated carbon fiber into the prepared sizing agent and ultrasonically treat it for 1 hour. Afterwards, the carbon fibers were taken out, transferred to an oven, and dried at a controlled temperature of 140°C for 12 hours. Finally, the sized carbon fiber is taken out. In this example, referring to "GB / T3357-1982 Test Method for Interlaminar Shear Strength of Unidirectional...

Embodiment 3

[0048] Sulfonated polyether ketone ketone powder was prepared according to the method of Example 1.

[0049] Weigh the sulfonated polyether ketone ketone according to the weight ratio, add it into deionized water, stir at 60° C. at a speed of 250 r / min for 2 hours, and obtain a uniform water-based sizing agent. The concentration of sulfonated polyether ketone ketone is 2% in proportion.

[0050] Weigh the original carbon fiber according to 60% of the total weight of the sizing agent, firstly use ethanol and deionized water to clean the surface of the carbon fiber, and then transfer it to an oven for drying. Spread the dried carbon fiber on the substrate, use a high-pressure watering can to evenly spray the prepared carbon fiber sizing agent on the surface of the carbon fiber, let it stand for a period of time, transfer it to an oven, and control the temperature at 140°C for 12 hours. Finally, the continuous carbon fibers were evenly cut into 6mm chopped carbon fibers by a she...

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Abstract

The invention relates to a high-temperature-resistant water-based carbon fiber universal sizing agent and a preparation method and application thereof. The sizing agent comprises the following components in percentage by weight of 0.1-10% of sulfonated polyetherketoneketone and 80-99% of deionized water. Compared with the prior art, the prepared sizing agent can be widely applied to sizing treatment of original carbon fibers, continuous carbon fibers and recycled short carbon fibers. The maximum decomposition temperature of a product is higher than 300 DEG C, and the sizing agent can be suitable for high-temperature processing and manufacturing conditions and application environments.

Description

technical field [0001] The invention belongs to the field of sizing agent preparation and specifically designs a method for preparing a high-temperature-resistant water-based carbon fiber universal sizing agent. It can be generally used for sizing treatment of virgin carbon fiber, recycled carbon fiber, continuous carbon fiber, chopped carbon fiber and other materials. Background technique [0002] Carbon fiber is an inorganic fiber material, which has the characteristics of high specific strength, high specific modulus, high temperature resistance, corrosion resistance, low density, and fatigue resistance. Carbon fiber and its composite materials are widely used in sports equipment, aerospace, medical equipment, national defense and other fields. my country's carbon fiber and related industries have also shown a trend of rapid development in recent years, and the output of carbon fiber has increased year by year. However, carbon fiber materials are highly brittle and have...

Claims

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Application Information

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IPC IPC(8): D06M15/53C08G65/48D06M101/40
CPCD06M15/53C08G65/48D06M2101/40D06M2200/40
Inventor 陈玉洁郭宇通王杰统李华刘河洲
Owner SHANGHAI JIAO TONG UNIV
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