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Thermoplastic emulsion sizing agent for carbon fiber and preparation method thereof and application thereof

A carbon fiber and thermoplastic technology, applied in the field of thermoplastic emulsion sizing agent for carbon fiber, to achieve performance improvement, good application effect, and increased interlayer shear strength

Inactive Publication Date: 2015-06-10
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the sizing agent for carbon fiber for ABS resin

Method used

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  • Thermoplastic emulsion sizing agent for carbon fiber and preparation method thereof and application thereof
  • Thermoplastic emulsion sizing agent for carbon fiber and preparation method thereof and application thereof
  • Thermoplastic emulsion sizing agent for carbon fiber and preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]Synthesis of terpolymer NSM: Add a certain mass of xylene solution of styrene (St) monomer, phenylmaleimide (NPMI) monomer and maleic anhydride (MAH) monomer into a condensing reflux device into a three-neck flask, and put in the initiator di-tert-butyl peroxyphthalate, heated to 125°C, reacted for 4 hours under the protection of nitrogen, and cooled rapidly with ice water to terminate the reaction. The NSM terpolymer was obtained, and the mass ratio of the three components was N:S:M=47:51:2.

[0046] Preparation of sizing agent: Physically blend PA-709 ABS and NSM at a mass ratio of 50:50, then add the acetone solution of Nongru 1601 to the above mixture and stir evenly. The quality of the emulsifier is 10% of the mass of the main slurry, and the quality of the main slurry is 0.5% of the mass of acetone. Finally, high-speed shear stirring at a constant rate of 8000r / min, slowly drop deionized water, the mass of the main slurry is 0.5% of the mass of deionized water, an...

Embodiment 2

[0050] Synthesis of terpolymer NSM: Add a certain mass of xylene solution of styrene (St) monomer, phenylmaleimide (NPMI) monomer and maleic anhydride (MAH) monomer into a condensing reflux device into a three-neck flask, and put in the initiator di-tert-butyl peroxyphthalate, heated to 125°C, reacted for 4 hours under the protection of nitrogen, and cooled rapidly with ice water to terminate the reaction. The NSM terpolymer was obtained, and the mass ratio of the three components was N:S:M=47:51:2.

[0051] Preparation of sizing agent: physically blend PA-709 ABS and NSM at a ratio of 70:30, then add the acetone solution of EL-20 to the above mixture and stir evenly. The quality of the emulsifier is 40% of the mass of the main slurry, and the quality of the main slurry is 1.5% of the mass of acetone. Finally, under high-speed shear stirring at a constant rate of 12000r / min, slowly drop deionized water, the mass of the main slurry is 1% of the mass of deionized water, and con...

Embodiment 3

[0055] Preparation of sizing agent: use pure PS-777B ABS as the main slurry, then add OP-10 cyclopentanone solution into the above mixture and stir evenly. The quality of the emulsifier is 30% of the quality of the main slurry, and the quality of the main slurry is 1.2% of the quality of cyclopentanone. Finally, high-speed shear stirring at a constant rate of 9000r / min, slowly drop deionized water, the mass of the main slurry is 0.7% of the mass of deionized water, and continue stirring for 25 min after adding water to obtain a sizing agent emulsion.

[0056] Sizing treatment: the above-mentioned emulsion sizing agent was attached to the carbon fiber by dipping method, the dipping time was 30s, and the carbon fiber was dried at 120°C for 20 min after sizing.

[0057] Measure the standing stability, average particle size of this sizing agent emulsion under room temperature and normal pressure, the sizing rate of carbon fiber, stiffness, hair amount, wear times, the interlaminar...

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Abstract

The invention discloses a thermoplastic emulsion sizing agent for carbon fiber. The thermoplastic emulsion sizing agent comprises main pulp, an emulsifying agent, an organic solvent and deionized water. The main pulp is Acrylonitrile-Butadiene-Styrene (ABS) formed by modifying N-Phenylmaleimide-Styrene-Maleic anhydride (NSM). And the mass ratio of the ABS and the NSM is 50-100:0-50. The mass of the emulsifying agent accounts for 10-40% the mass of the main pulp, the mass of the main pulp accounts for 0.5-1.5% the mass of the organic solvent, and the mass of the main pulp accounts for 0.5-1% the mass of the deionized water. The invention further discloses the preparation method of the sizing agent and the application of the sizing agent. The sizing agent is good in stability, low in environmental pollution and simple in preparation method. The NSM can assist a carbon fiber rubber layer generated after sizing is conducted in keeping better completeness in the composite material hot press molding process. It is tested by experiment that the post-processability of the carbon fiber is obviously improved after the carbon fiber is processed through the sizing agent, and the inter-laminar shear strength (ILSS) of the carbon fiber reinforced ABS composite material is obviously improved as well.

Description

technical field [0001] The invention relates to a thermoplastic emulsion sizing agent for carbon fiber and its preparation method and application. Background technique [0002] Due to its high specific strength, high specific modulus, high temperature resistance and corrosion resistance, carbon fiber is widely used in aerospace, sports and leisure products, civil engineering, medical equipment and other fields. However, carbon fiber is a brittle material, and it is easy to cause monofilament breakage and fuzz due to friction during weaving or processing, which reduces the strength of carbon fiber and affects the mechanical properties of its composite material. In order to improve the strength and post-processing performance of carbon fiber, the carbon fiber production line is equipped with a sizing device before winding. Sizing is to coat a layer of protective glue on the surface of the carbon fiber to bundle the carbon fiber. While improving the processability of the carbo...

Claims

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Application Information

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IPC IPC(8): D06M15/31D06M15/285D06M15/53C08F222/40C08F212/08C08F222/06D06M101/40
Inventor 葛曷一马小龙黄少东金朝生谭光辉
Owner UNIV OF JINAN
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