Emulsion type carbon fiber sizing agent containing graphene oxide and preparation method thereof

An emulsion-type carbon fiber and graphene technology, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems of influence, sizing agent particle size distribution and unfavorable stability, etc., and achieve the effect of superior fiber performance and good reproducibility

Active Publication Date: 2015-03-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But simply added to the sizing agent, the sheet structure of graphene oxide will adversely affect the particle size distribution and stability of the sizing agent

Method used

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  • Emulsion type carbon fiber sizing agent containing graphene oxide and preparation method thereof
  • Emulsion type carbon fiber sizing agent containing graphene oxide and preparation method thereof
  • Emulsion type carbon fiber sizing agent containing graphene oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Epoxy resin EP-44: 50g;

[0033] Polyethylene glycol (PEG6000): 100g;

[0034] Toluene diisocyanate: 7g;

[0035] Alkylphenol polyoxyethylene ether: 50g;

[0036] Graphene oxide aqueous solution (2 wt%): 375g;

[0037] Toluene: 50g.

[0038]Add 50g of epoxy resin EP-44, 100g of polyethylene glycol and 50g of toluene into the reaction kettle, heat until completely dissolved and stir evenly, add 7g of toluene diisocyanate at reflux temperature, react for 2 hours, add 50g of alkylphenol poly Oxyethylene ether, stirred for 1h, and then vacuumed to extract the solvent. Reduced to room temperature to obtain epoxy emulsifier. Add 520g of epoxy resin EP-44 on the basis of the obtained emulsion epoxy oxidant, mix thoroughly at 60°C, then slowly add 375g, 2wt% graphene oxide aqueous solution, and use deionized water to add emulsion-type carbon fiber sizing to 50% solid content agent.

Embodiment 2

[0040] Epoxy resin EP-44: 55g;

[0041] Polyethylene glycol (PEG6000): 90g;

[0042] Toluene diisocyanate: 6.5g;

[0043] Alkylphenol polyoxyethylene ether: 50g;

[0044] Graphene oxide aqueous solution (2 wt%): 375g;

[0045] Butanone: 60g.

[0046] Add 55g of epoxy resin EP-44, 90g of polyethylene glycol and 60g of methyl ethyl ketone into the reaction kettle, heat until completely dissolved and stir evenly, add 6.5g of toluene diisocyanate at reflux temperature, react for 2 hours, add 50g of alkyl Phenol polyoxyethylene ether, stirred for 1h, then vacuumed, the solvent was drawn out, and the epoxy emulsifier was obtained by lowering to room temperature. On the basis of the obtained epoxy emulsifier, add 522g of epoxy resin EP-44, mix thoroughly at 60°C, then slowly add 375g, 2wt% graphene oxide aqueous solution, and add deionized water to the emulsion carbon fiber with a solid content of 50% Sizing agent.

[0047] From figure 1 It can be found...

Embodiment 3

[0054] Epoxy resin EP-20: 57g;

[0055] Polyethylene glycol (PEG6000): 100g;

[0056] Toluene diisocyanate: 7.5g;

[0057] Alkylphenol polyoxyethylene ether: 50g;

[0058] Graphene oxide aqueous solution (2 wt%): 400g;

[0059] Butanone: 65g.

[0060] Add 57g of epoxy resin EP-20, 100g of polyethylene glycol and 65g of methyl ethyl ketone into the reaction kettle, heat until completely dissolved and stir evenly, add 6.5g of toluene diisocyanate at reflux temperature, react for 2 hours, add 50g of alkyl Phenol polyoxyethylene ether, stirred for 1h, then vacuumed, the solvent was drawn out, and the epoxy emulsifier was obtained by lowering to room temperature. On the basis of the obtained epoxy emulsifier, add 600g of epoxy resin EP-44, mix thoroughly at 60°C, then slowly add 400g, 2wt% graphene oxide aqueous solution, and add deionized water to the emulsion carbon fiber with a solid content of 50% Sizing agent.

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Abstract

The invention discloses an emulsion type carbon fiber sizing agent containing graphene oxide and a preparation method thereof. The sizing agent is prepared from a nonionic epoxy emulgator, epoxy resin, graphene oxide and a water dispersion medium. The preparation method of the emulsion type carbon fiber sizing agent comprises the following steps: taking epoxy resin, adding polyethylene glycol and an organic solvent, adding a coupling agent at the reflux temperature and reacting for 2-2.5 hours, adding alkylphenol ethoxylates, stirring for 1-2 hours, then pumping vacuum and extracting the organic solvent, lowering the temperature to room temperature to obtain the nonionic epoxy emulgator; and adding epoxy resin on the basis of the obtained nonionic epoxy emulgator, then slowly and quantitatively adding a graphene oxide aqueous solution, and finally adding the water dispersion medium until the phase is converted to obtain the emulsion type carbon fiber sizing agent. By virtue of the emulsion type carbon fiber sizing agent, the defects of economy, safety, environmental pollution and hygiene caused by a large quantity of organic solvents required for the solution type carbon fiber sizing agent can be overcome; the prepared sizing emulsion has the characteristics of being small in granularity and uniform in pavement on the surface of the carbon fiber.

Description

technical field [0001] The invention relates to an emulsion type carbon fiber sizing agent and a preparation method thereof, in particular to a preparation method for preparing an emulsion type carbon fiber sizing agent containing graphene oxide. Background technique [0002] The elongation of carbon fiber is low and brittle. Due to the repeated friction, stretching and impact caused by the processing movement, the fiber will appear fuzzy, loose or split, which seriously affects the quality of the product. Cause open circuit accidents such as electrical equipment, instruments, etc., seriously affecting the working environment. Secondly, the surface energy of carbon fiber after surface treatment increases, and it is easy to absorb moisture and impurities in the air. The longer the fiber surface is exposed to the air, the worse the effect of fiber surface treatment. Sizing can improve the active surface of fiber surface treatment. for protection. Finally, the sizing agent ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/55D06M11/74D06M15/568C08J5/06D06M101/40
Inventor 刘丽张庆波黄玉东龙军姜大伟武光顺谢非李大龙王芳
Owner HARBIN INST OF TECH
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