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Method for preparing carbon fiber sizing agent

A carbon fiber and slurry technology, applied in the direction of carbon fiber, fiber type, fiber treatment, etc., can solve the problems of poor wear resistance, insufficient resilience toughness, short service life, etc., to improve wetting performance and interface bonding strength , The effect of improving wear resistance

Inactive Publication Date: 2016-11-16
郭迎庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: In view of the disadvantages of poor wear resistance, poor clustering performance and insufficient resilience toughness in the use process of the current traditional carbon fiber sizing agent, the present invention dissolves polyethersulfone resin in petroleum ether, adds Concentrated sulfuric acid is used for sulfonation reaction, pig bones and biogas liquid are taken for mixed fermentation, and then the filtrate is collected by filtration, distilled under reduced pressure, and dried to obtain a solid, and the modified polyacrylic acid obtained by reacting the solid with acrylic acid and the filtrate after fermenting Viola ceratum, The carbon fiber sizing agent can be obtained by stirring castor oil polyoxyethylene ether, etc., and the polyethersulfone resin is used as a sizing agent after being sulfonated in the present invention, which makes up for the poor wear resistance and longer service life of the traditional carbon fiber sizing agent. Short defect, pig bone fermented product and acrylic acid are cross-linked and solidified to improve the phenomenon of insufficient resilience and toughness of the material surface after the sizing agent is used. After the carbon fiber is sized by the carbon fiber sizing agent obtained in the present invention, it can be broken and flattened in a relatively short time Scattered, can be well compatible with thermoplastic matrix resin, the matrix resin can fully wet the carbon fiber after sizing, and directly play a role in stress transmission between the fiber and the matrix, and has better use value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First, weigh 10g of polyethersulfone resin and add it to the reactor, and add 100mL of petroleum ether, stir for 30min to dissolve it, then add 5mL of 98% concentrated sulfuric acid by mass fraction, heat to 60℃, stir and react for 2h, and the reaction is over. Add 5% sodium hydroxide solution to adjust the pH to 7 to obtain the sulfonated polyethersulfone mixed solution for use; take 100g of pig bones, remove the residual meat on the surface and wash with deionized water for 3 times, and place in a ventilated place Dry naturally, then place it in a pulverizer for pulverization, place the pulverized material in a fermentor, take the biogas liquid for filtration, collect the filtrate, take 300mL of the filtrate and add it to the fermentor for sealed fermentation, control the temperature at 30°C, and ferment for 2 days. After the fermentation is over, heat up to 100°C, stir for 5 min, filter, collect the filtrate, and distill under reduced pressure to 1 / 3 of the original vo...

example 2

[0020] First weigh 15g of polyethersulfone resin into the reactor, and add 150mL of petroleum ether, stir for 35min to dissolve, then add 7mL of 98% concentrated sulfuric acid with mass fraction, heat to 65℃, stir for 2.5h, and the reaction is over , Add 5% sodium hydroxide solution to adjust the pH to 7 to obtain the sulfonated polyethersulfone mixed solution, ready for use; take 200g of pig bones, remove the residual meat on the surface, wash it with deionized water for 5 times, and place it in ventilation The place is air-dried naturally, and then placed in a pulverizer for pulverization. The pulverized material is placed in a fermentor, and the biogas liquid is taken for filtration, the filtrate is collected, and 400 mL of the filtrate is added to the fermentor for sealed fermentation. The temperature is controlled at 40°C for 3 days of fermentation. After the fermentation is over, heat up to 110°C, stir for 10 min, filter, collect the filtrate, and distill under reduced pre...

example 3

[0023] First weigh 20g of polyethersulfone resin and add it to the reactor, and add 200mL of petroleum ether, stir for 40min to dissolve, then add 8mL of 98% concentrated sulfuric acid by mass fraction, heat to 70℃, stir and react for 3h, the reaction is over. Add 5% sodium hydroxide solution to adjust the pH to 7 to obtain a sulfonated polyethersulfone mixed solution, ready for use; take 150g of pork bones, remove the residual meat on the surface and wash with deionized water 4 times, and place in a ventilated place Dry naturally, then place it in a pulverizer for pulverization, place the pulverized material in a fermenter, take the biogas liquid for filtration, collect the filtrate, take 350mL of the filtrate and add it to the fermentor for sealed fermentation, control the temperature at 35°C, and ferment for 2.5 days. After the fermentation is over, heat up to 105°C, stir for 8min, filter, collect the filtrate, and distill under reduced pressure to 1 / 3 of the original volume....

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PUM

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Abstract

The invention discloses a method for preparing a wearable carbon fiber sizing agent, and belongs to the technical field of sizing agents. The method comprises the following steps: taking polyether sulfone resin to be dissolved in petroleum ether, adding concentrated sulfuric acid to subject to a sulfonation reaction, then taking pig bones and a biogas liquid to be mixed and fermented, filtering and collecting a filtrate, distilling under reduced pressure and drying to obtain a solid, stirring modified polyacrylic acid obtained by reacting the solid with acrylic acid, a filtrate obtained after the fermenting of pinguicula primuliflora, castor oil polyoxyethylene ether and the like and keeping stand to obtain a carbon fiber sizing agent. After the carbon fiber is sized by the carbon fiber sizing agent, the carbon fiber can be broken, spread and dispersed in a short time, and can be well compatible with a thermoplastic matrix resin. The matrix resin can fully wet the sized carbon fiber and directly play a stress transfer role between the fiber and the matrix, and the application value is excellent.

Description

Technical field [0001] The invention discloses a preparation method of a carbon fiber sizing agent, which belongs to the technical field of sizing agents. Background technique [0002] In the past two decades, with the increasing demand for high-strength, high-toughness and high-temperature-resistant composite materials in aviation, aerospace and other high-tech fields, carbon fiber reinforced special engineering plastics have gradually attracted the attention of academia and industry. By integrating the excellent mechanical properties of carbon fiber, and the characteristics of special engineering plastics such as impact resistance and high temperature resistance, this type of composite material can overcome the shortcomings of the current general carbon fiber reinforced thermoset composite materials with poor impact strength and temperature resistance. However, in the existing carbon fiber reinforced special engineering plastics, the bonding strength between the carbon fiber an...

Claims

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Application Information

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IPC IPC(8): D06M15/63D06M15/263D06M15/53D06M13/17D06M13/292D06M11/79D06M101/40
CPCD06M15/63D06M11/79D06M13/17D06M13/292D06M15/263D06M15/53D06M2101/40D06M2200/35D06M2200/40
Inventor 郭迎庆孟中立陆娜
Owner 郭迎庆
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