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Composite water based carbon fiber sizing agent and preparation method and use method thereof

A composite and carbon fiber technology, which is applied in the direction of carbon fiber, fiber treatment, fiber type, etc., can solve the problems of composite material preparation, low temperature resistance, poor impact resistance, etc., and achieve good sizing effect and improved shear strength. Effect

Active Publication Date: 2017-08-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN104389177A discloses a carbon fiber sizing agent and its sizing method. By adding polyurethane resin to the epoxy resin sizing agent, the friction resistance and fiber opening of carbon fiber tow are improved; CN201610044193.X discloses a composite water-based Emulsion sizing agent, composed of water-based modified epoxy emulsion and aliphatic thermoplastic sizing agent, overcomes the problems of brittleness and poor impact resistance of single epoxy resin sizing agent
The above-mentioned carbon fiber sizing agent can be used in the preparation of conventional thermoplastic resin composite materials, but because the resin used in the sizing agent itself is not high in temperature resistance, it cannot meet the requirements for the preparation of composite materials based on thermoplastic engineering plastics such as PEEK, PI, and PPS.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Dissolving 20g of emulsifier of Span-40 in 1000ml of deionized water;

[0030] (2) 50g epoxy resin E44 is dissolved in 100ml xylene;

[0031] (3) Add 50 g of polyamide-imide slurry (solid content 27%, viscosity 1200 cps) of BF-10L to the solution of step (1) under stirring conditions until completely dissolved;

[0032] (4) Adjust the stirring speed of the high-speed stirrer (Fluke FA25) to 20000rpm, slowly add the solution of step (2) to the solution of step (3), and continue to stir for 2 hours to obtain polyamideimide / epoxy resin composite Type water-based carbon fiber sizing agent.

[0033] The massfraction of polyamide-imide size in this sizing agent is 4.17%, the massfraction of epoxy resin is 4.17%, the emulsifier massfraction is 1.66%, the organic solvent massfraction is 6.67%, and the deionized water massfraction is 83.33%.

[0034] Before sizing, take 100ml of the above-mentioned sizing agent, add 2000ml of deionized water under stirring conditions, pla...

Embodiment 2

[0037] (1) Dissolving 10g of emulsifier of Span-40 and 10g of Tween-60 in 1000ml of deionized water;

[0038] (2) 100g epoxy resin E44 is dissolved in 200ml xylene;

[0039] (3) Add 100 g of polyamide-imide slurry (solid content 27%, viscosity 1200 cps) of BF-10L to the solution of step (1) under stirring conditions until completely dissolved;

[0040] (4) Adjust the stirring speed of the high-speed stirrer (Fluke FA25) to 20000rpm, gradually add the solution of step (2) to the solution of step (3), and continue to stir for 2 hours to obtain polyamideimide / epoxy resin composite Type water-based carbon fiber sizing agent.

[0041] The massfraction of polyamide-imide size in this sizing agent is 7.25%, the massfraction of epoxy resin is 7.25%, the emulsifier massfraction is 1.45%, the organic solvent massfraction is 11.60%, and the deionized water massfraction is 72.45%.

[0042] Before sizing, take 200ml of the above-mentioned sizing agent, add 2000ml of deionized water unde...

Embodiment 3

[0045] (1) Dissolving 20g of emulsifier of Span-40 and 20g of Tween-60 in 1000ml of deionized water;

[0046] (2) 50g epoxy resin E44 is dissolved in 200ml n-heptane;

[0047] (3) Add 100 g of polyamide-imide slurry (solid content 34%, viscosity 1500 cps) of BF-10H to the solution of step (1) under stirring conditions until completely dissolved;

[0048] (4) Adjust the stirring speed of the high-speed stirrer (Fluke FA25) to 25000rpm, gradually add the solution of step (2) to the solution of step (3), and continue stirring for 2 hours to obtain polyamideimide / epoxy resin composite Type water-based carbon fiber sizing agent.

[0049] The massfraction of polyamide-imide size in this sizing agent is 8.0%, and the massfraction of epoxy resin is 4.0%, and emulsifier massfraction is 3.2%, and organic solvent massfraction is 12.8%, and deionized water massfraction is 74.0%.

[0050] Before sizing, take 500ml of the above-mentioned sizing agent, add 2000ml of deionized water under ...

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Abstract

The invention relates to a composite water-based carbon fiber sizing agent and a preparation method and a use method thereof, and belongs to the field of carbon fiber manufacturing. Waterborne polyamide imide / epoxy resin is adopted for compounding; the obtained water-based carbon fiber sizing agent is applied to both conventional thermosetting resin and a thermoplastic matrix, and is specially suitable for high temperature-resistant engineering plastics such as polyether-ether-ketone (PEEK), polyimide (PI) and polyphenylene sulfide (PPS).

Description

[0001] Technical field: [0002] The invention relates to a composite water-based carbon fiber sizing agent, a preparation method and a use method thereof, and belongs to the field of carbon fiber manufacturing. [0003] Background technique: [0004] Polyacrylonitrile-based carbon fiber has many excellent properties and is an important reinforcement of modern advanced composite materials. The interfacial layer between fiber and resin plays a key role in stress transfer when fiber composites are loaded. The formation of the interfacial layer of composite materials is inseparable from the type of sizing agent and the sizing method in the carbon fiber manufacturing process. [0005] At present, the main component of most carbon fiber sizing agents is thermosetting epoxy resin. This type of sizing agent can protect fibers well and reduce damage in the process of carbon fiber packaging, transportation and composite material manufacturing, and can also be better used in thermosetti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/59D06M15/55D06M101/40
CPCD06M15/55D06M15/59D06M2101/40D06M2200/40
Inventor 童元建徐樑华高爱君王宇徐赛男吴兆麟
Owner BEIJING UNIV OF CHEM TECH
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