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Emulsion type carbon fiber sizing agent and preparation method and application thereof

An emulsion-type carbon fiber and sizing agent technology, applied in carbon fiber, fiber processing, textiles and papermaking, etc., can solve problems such as improving the stability of sizing agent, and achieve the effect of overcoming excessive emulsifier dosage, overcoming poor stability and good performance

Inactive Publication Date: 2015-01-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, there is no relevant report on adding graphene oxide to the sizing agent to improve the stability of the sizing agent. If graphene oxide is used to replace part of the emulsifier to prepare the sizing agent emulsion, the stability of the sizing agent will be greatly improved, and the effect of the emulsifier on the sizing agent will be reduced. The influence of carbon fiber properties has great research value

Method used

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  • Emulsion type carbon fiber sizing agent and preparation method and application thereof

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Embodiment 1

[0050] The composition of the sizing agent is: 100 parts of epoxy resin (AG80) as the main slurry, 0.1 part of graphene oxide, 6 parts of emulsifier, 15 parts of diluent neopentyl glycol diglycidyl ether, and 400 parts of water. Wherein the emulsifier is octylphenol polyoxyethylene ether (OP-10), sorbitan monooleate (Span-80) and sodium dodecylbenzenesulfonate with a mass ratio of 10:65:25 (SDBS) mixture.

[0051] The preparation method of the sizing agent is as follows: first, add the main slurry AG80 epoxy resin into the beaker, add neopentyl glycol diglycidyl ether and emulsifier, stir and mix the mixture evenly in a water bath at 30 ℃ to make the viscosity lower; then The mixture was taken out and stirred at 2000 rpm for 20 min with a high-shear dispersing emulsifier. Next, take graphene oxide, dissolve it in water, adjust the pH value of the graphene oxide aqueous solution to 6 with ammonia water, and ultrasonicate for 20 min, put the solution in a constant pressure drop...

Embodiment 2

[0053] The composition of the sizing agent is: 100 parts of epoxy resin (E-51) as the main slurry, 0.3 parts of graphene oxide, 5 parts of emulsifier, 10 parts of diluent neopentyl glycol diglycidyl ether, and 400 parts of water. Wherein the emulsifier is octylphenol polyoxyethylene ether (OP-10), sorbitan monooleate (Span-80) and sodium dodecylbenzenesulfonate with a mass ratio of 10:65:25 (SDBS) mixture.

[0054] The preparation method of the sizing agent is as follows: First, add the main slurry epoxy resin (E-51) into a beaker, add neopentyl glycol diglycidyl ether and emulsifier, and stir the mixture evenly in a water bath at 30 °C to make the viscosity Then the mixture was taken out and stirred at a speed of 2000 rpm for 20 min with a high-shear dispersing emulsifier. Next, take graphene oxide and dissolve it in water; adjust the pH value of the graphene oxide aqueous solution to 6 with ammonia water, sonicate for 20 min, put it in a constant pressure dropper, add it dr...

Embodiment 3

[0056] The composition of the sizing agent is: 100 parts of the main slurry epoxy resin (E-55), 2 parts of graphene oxide, 0.5 parts of emulsifier, 50 parts of diluent acetone, and 400 parts of water. Wherein the emulsifier is octylphenol polyoxyethylene ether (OP-10), sorbitan monooleate (Span-80) and sodium dodecylbenzenesulfonate with a mass ratio of 10:65:25 (SDBS) mixture.

[0057] The preparation method of the sizing agent is as follows: first, add the main slurry epoxy resin (E-55) into the beaker, add acetone, stir the mixture evenly in a water bath at 30 ℃ to make the viscosity lower; then, take the mixture out and use A high-shear dispersing and emulsifying machine stirred at a speed of 2000 rpm for 20 min. Next, take graphene oxide and dissolve it in water; adjust the pH value of the graphene oxide aqueous solution to 6 with ammonia water, sonicate for 20 min, put it in a constant pressure dropper, add it dropwise to the mixture at a rate of 0.1 mL / min, and adjust ...

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Abstract

The invention discloses an emulsion type carbon fiber sizing agent and a preparation method and application thereof. The sizing agent comprises main size, an emulsifier, graphene oxide, a diluent and water, wherein the amount of the emulsifier is 0.5-6 weight percent of that of the main size; and the amount of graphene oxide is 0.1-2 weight percent of that of the main size. The preparation method comprises the following steps: mixing the main size, the diluent and the emulsifier, stirring and premixing; and slowly adding an aqueous solution of graphene oxide for performing phase inversion emulsification to form Pickering emulsion in which graphene oxide and the emulsifier are stable, thereby obtaining the sizing agent. The preparation method disclosed by the invention is easy to operate, the stability of the sizing agent is improved by adopting the synergistic effect of graphene oxide and the emulsifier, the amount of the emulsifier is reduced, the environmental pollution is alleviated, the defects that the sizing agent with a single stable emulsifier is low in stability and the amount of the emulsifier is extremely large are overcome, the selection range of the main size is widened, the performances of carbon fibers can be improved after sizing, an interface bonding effect of a carbon fiber composite material is enhanced, and the mechanical strength of the carbon fiber composite material is improved.

Description

technical field [0001] The invention relates to an emulsion type carbon fiber sizing agent and its preparation method and application, in particular to a Pickering emulsion type carbon fiber sizing agent with graphene oxide as a stabilizer and its preparation method and application. Background technique [0002] Carbon fiber and its composite materials have many excellent properties and have been widely used in military and civilian fields. However, carbon fiber has a certain degree of brittleness, and during the production process of carbon fiber, there will be phenomena such as monofilament breakage and wool, so it is necessary to sizing the carbon fiber. There are solvent type and emulsion type of carbon fiber sizing agent, and the emulsion type is more commonly used. Emulsion-type sizing agent is a sizing agent made of resin as the main component and by adding a certain amount of emulsifier and auxiliary agent. It uses water as the dispersant, is cheap and pollution-fre...

Claims

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Application Information

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IPC IPC(8): D06M15/55D06M11/74D06M15/53D06M13/256D06M13/11D06M13/127D06M101/40
Inventor 葛曷一柳华实王翠翠马小龙黄振
Owner UNIV OF JINAN
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