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Lubricant for carbon fiber sizing agent and preparation method

A carbon fiber and lubricant technology, applied in the direction of carbon fiber, fiber type, fiber treatment, etc., can solve the problems of poor compatibility, unstable components, etc., achieve the effect of low cost, improved lubrication and processing performance, and simple operation

Inactive Publication Date: 2016-07-27
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The additives in the sizing agent can improve the performance stability of the sizing agent during use. The lubricant is one of the additives, which can improve the lubricating ability of the material and effectively prevent the bonding between fibers. Currently, the common The lubricant has the disadvantages of instability and poor compatibility of ingredients, so it is of great significance to develop a lubricant with good performance for the preparation of carbon fiber sizing agent

Method used

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  • Lubricant for carbon fiber sizing agent and preparation method
  • Lubricant for carbon fiber sizing agent and preparation method

Examples

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Effect test

Embodiment 1

[0028] This embodiment provides a polyacrylic acid-modified nanosheet tungsten disulfide-based lubricant for a carbon fiber sizing agent and a preparation method, wherein the preparation method includes the following steps:

[0029] (1) Configure a mixed solution of water and isopropanol, wherein the volume ratio of isopropanol is 30%, then add tungsten disulfide with an average crystallite size of 50 microns, the concentration of tungsten disulfide is 10 mg / mL, mix to form a dispersed liquid;

[0030] (2) ultrasonically treat the dispersion obtained in step (1), the ultrasonic power is 100W, and the ultrasonic time is 1 hour; after the ultrasonic is completed, let stand for 8 hours; then centrifuge at 4000rpm to obtain the upper dispersion;

[0031] (3) Modifying the dispersion obtained in step (2): adding acrylic acid and ammonium persulfate at a ratio of 10:1 by weight at 40°C, wherein the ratio by weight of acrylic acid to tungsten disulfide is 10:1, React for 96 hours to...

Embodiment 2

[0036] This embodiment provides a polyacrylic acid-modified nanosheet tungsten disulfide-based lubricant for a carbon fiber sizing agent and a preparation method, wherein the preparation method includes the following steps:

[0037] (1) Configure a mixed solution of water and isopropanol, wherein the volume ratio of isopropanol is 50%, then add tungsten disulfide with an average crystallite size of 80 microns, the concentration of tungsten disulfide is 10mg / mL, mix to form a dispersed liquid;

[0038] (2) ultrasonically treat the dispersion liquid obtained in step (1), the ultrasonic power is 100W, and the ultrasonic time is 8 hours; after the ultrasonic wave is completed, let stand for 4 hours; then centrifuge at 6000rpm to obtain the upper dispersion liquid;

[0039] (3) Modifying the dispersion obtained in step (2): adding acrylic acid and ammonium persulfate at a ratio of 80:1 by weight at 80°C, wherein the ratio by weight of acrylic acid to tungsten disulfide is 5:1, Rea...

Embodiment 3

[0043] This embodiment provides a polyacrylic acid-modified nanosheet tungsten disulfide-based lubricant for a carbon fiber sizing agent and a preparation method, wherein the preparation method includes the following steps:

[0044](1) Prepare a mixed solution of water and isopropanol, wherein the volume ratio of isopropanol is 70%, then add tungsten disulfide with an average crystallite size of 50 microns, the concentration of tungsten disulfide is 10 mg / mL, mix to form a dispersed liquid;

[0045] (2) ultrasonically treat the dispersion liquid obtained in step (1), the ultrasonic power is 100W, and the ultrasonic time is 8 hours; after the ultrasonic wave is completed, let stand for 8 hours; then centrifuge at 2000rpm to obtain the upper dispersion liquid;

[0046] (3) Modifying the dispersion obtained in step (2): adding acrylic acid and ammonium persulfate at a ratio of 200:1 by weight at 60°C, wherein the ratio by weight of acrylic acid to tungsten disulfide is 20:1, Rea...

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Abstract

The invention relates to a lubricant for a carbon fiber sizing agent and a preparation method. The lubricant is prepared from polyacrylic acid modified nano lamella tungsten disulfide dispersion, a dispersing agent, silicon oil and higher aliphatic acid; the polyacrylic acid modified nano lamella tungsten disulfide dispersion is a dispersion obtained by modifying a nano lamella tungsten disulfide dispersion through polyacrylic acid. The preparation method comprises: firstly, preparing an aqueous solution of isopropyl alcohol, and then adding tungsten disulfide of which a microcrystalline size is smaller than 100 micrometers so as to form the dispersion; 2, after carrying out ultrasonic processing and standing, carrying out centrifugation to obtain a supernatant dispersion; 3, carrying out polyacrylic acid modification processing to obtain the polyacrylic acid modified nano lamella tungsten disulfide dispersion, and then mixing the polyacrylic acid modified nano lamella tungsten disulfide dispersion with the dispersing agent, the silicon oil and the higher aliphatic acid according to a matching principle. By the nano lamella tungsten disulfide dispersion prepared by using the polyacrylic acid to carry out modification, the lubricant can be used for preparing the sizing agent with special purposes and partially optimizes interface performance and macroscopic properties of fibers and a composite material of the fibers.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a lubricant for a carbon fiber sizing agent and a preparation method, in particular to a polyacrylic acid-modified nanosheet tungsten disulfide-based lubricant for a carbon fiber sizing agent. Background technique [0002] Carbon fiber has a series of excellent properties such as high specific strength and high specific modulus, and is widely used. However, due to poor toughness and poor abrasion resistance of carbon fiber, during production and processing, it will be rubbed and broken to make the opening unclear. Friction is prone to breakage of wool and monofilament, which reduces its strength. In the fiber production process, the above problems can be well solved by sizing, and sizing has become a very important link in the fiber production process. With the continuous development of the carbon fiber composite material industry, the performance requirements of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263D06M15/643D06M13/188C10M161/00C10M125/22C10N30/06D06M101/40
CPCC10M125/22C10M161/00C10M2201/065C10M2207/126C10M2229/041C10N2030/06D06M13/188D06M15/263D06M15/643D06M2101/40D06M2200/40
Inventor 叶明新沈剑锋李娜
Owner FUDAN UNIV
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