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A kind of bismaleimide emulsion type sizing agent and its preparation method

A bismaleimide and emulsion-type technology, which is applied in textiles and papermaking, fiber treatment, carbon fiber, etc., can solve the problems of poor compatibility and cannot meet the high temperature resistance requirements of sizing agents, and achieve high stability and raw material sources The effect of simple and reliable, easy preparation process

Active Publication Date: 2015-11-11
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the poor compatibility between the general carbon fiber surface epoxy sizing agent and bismaleimide resin, and the problem that the carbon fiber / bismaleimide composite material cannot meet the high temperature resistance requirements of the sizing agent in high temperature applications, the present invention Provide a bismaleimide emulsion type sizing agent whose temperature resistance performance matches that of bismaleimide resin, and improve the interfacial bonding strength between carbon fiber and bismaleimide resin after sizing

Method used

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  • A kind of bismaleimide emulsion type sizing agent and its preparation method

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Embodiment 1

[0029] Weigh 5g N,N'-m-phenylene bismaleimide, 1g Span 60, 1g Tween 80 and 993ml deionized water, first dissolve N,N'-m-phenylene bismaleimide In 25.5ml of acetone, then adjust the temperature of the solution to 30°C in a constant temperature water bath, and then stir it with an emulsifier. At a rotation speed of 8000rpm, add Span 60 to the system, and continue to stir at a high speed for 10min. The obtained emulsion Labeled Emulsion A. In addition, the deionized water was heated up to 70°C, stirred by an emulsifier, and Tween 80 was added to the system at a speed of 8000 rpm, and continued to stir at a high speed for 10 minutes, and then naturally cooled to room temperature, and the obtained emulsion was marked as emulsion b. Keep the temperature of emulsion A constant, add emulsion B to the system through an emulsifier at a speed of 8000rpm, and continue to stir at a high speed for 10 minutes, and finally keep the temperature of the system constant, use general mechanical s...

Embodiment 2

[0032] Weigh 10g N,N'-m-phenylene bismaleimide, 2g Span 80, 1g Tween 60 and 987ml deionized water, first dissolve N,N'-m-phenylene bismaleimide In 56.1ml of acetone, then adjust the temperature of the solution to 50°C in a constant temperature water bath, and then stir it with an emulsifier. At a speed of 12000rpm, add Span 80 to the system, and continue stirring at a high speed for 30min, the obtained emulsion Labeled Emulsion A. In addition, the temperature of deionized water was raised to 85°C, stirred by an emulsifier, and Tween 60 was added to the system at a speed of 12,000 rpm, and continued to stir at a high speed for 30 minutes, and then naturally cooled to room temperature, and the obtained emulsion was marked as emulsion b. Keep the temperature of emulsion A constant, add emulsion B to the system through an emulsifier at a speed of 12000rpm, and continue to stir at a high speed for 30min, and finally keep the temperature of the system constant, use general mechanic...

Embodiment 3

[0035]Weigh 15g N,N'-m-phenylene bismaleimide, 2g Span 60, 18g Tween 40 and 965ml deionized water, first dissolve N,N'-m-phenylene bismaleimide In 89.9ml of acetone, then adjust the temperature of the solution to 40°C through a constant temperature water bath, and then stir it with an emulsifier. At a rotation speed of 9000rpm, add Span 60 to the system, and continue stirring at a high speed for 20min, the obtained emulsion Labeled Emulsion A. In addition, the deionized water was heated up to 80°C, stirred by an emulsifier, and Tween 40 was added to the system at a speed of 10,000 rpm, and the high-speed stirring was continued for 25 minutes, and then naturally cooled to room temperature, and the obtained emulsion was marked as emulsion b. Keep the temperature of emulsion A constant, add emulsion B to the system through an emulsifier at a speed of 11000rpm, and continue to stir at a high speed for 25min, and finally keep the temperature of the system constant, use general mec...

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Abstract

The invention discloses a bismaleimide emulsion type sizing agent which comprises the following components in percentage by mass: 0.5-2.0% of a main sizing agent, 0.1-0.2% of an emulsion agent A, 0.1-1.8% of an emulsion agent B and 96.0-99.3% of deionized water. The bismaleimide emulsion type sizing agent of which the temperature resistance is matched with that of bismaleimide resin has the advantage that the interface binding strength of a carbon fiber and the bismaleimide resin is improved after the sizing agent is used.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber sizing agents, in particular to a bismaleimide emulsion type sizing agent and a preparation method thereof. technical background [0002] Sizing is a very important process in the carbon fiber production process, and is regarded by the industry as one of the six key technologies that need to be broken through in carbon fiber production. The purpose of carbon fiber sizing mainly includes the following three aspects: (1) to avoid the highly active fiber surface after surface treatment from absorbing moisture and dust in the air, and to keep the fiber surface clean; (2) to improve the processability of the fiber, mainly to increase the fiber Excellent friction resistance, avoiding the occurrence of fuzz and broken filaments and achieving fiber bundles, which facilitates the processing of fibers in the subsequent weaving and composite material preparation processes; (3) Improves the interfacial b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/59D06M13/224D06M15/53D06M101/40
Inventor 吕春祥张寿春原浩杰
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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