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A kind of aqueous epoxy resin emulsion and its preparation method and application

A water-based epoxy resin and epoxy resin technology, used in textiles and papermaking, recycling technology, fiber processing, etc., can solve the problems of inability to form a uniform and stable emulsion, unsatisfactory effect, etc., to achieve thermodynamic stability of the system and avoid side effects. The effect of low reaction and energy consumption

Active Publication Date: 2022-05-17
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problem that the existing water-based carbon fiber sizing agent cannot form a uniform and stable emulsion, and the effect is not ideal when used as a carbon fiber sizing agent, the present invention provides an emulsion with extremely small particle size, excellent stability, and relatively high performance of the prepared carbon fiber material. Good a kind of aqueous epoxy resin emulsion and its preparation method and application

Method used

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  • A kind of aqueous epoxy resin emulsion and its preparation method and application
  • A kind of aqueous epoxy resin emulsion and its preparation method and application
  • A kind of aqueous epoxy resin emulsion and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Add 20mL of absolute ethanol and 12g of epoxy resin containing helical ring acetal structure into a three-necked flask in turn, measure 2g of diethanolamine dropwise into the reaction system, raise the temperature to 80°C, and react for several hours to dissolve Become clarified, leave standstill to remove ethanol and promptly obtain the epoxy resin containing helical ring acetal structure modified by diethanolamine;

[0033] 2) Weigh 0.5g of the diethanolamine-modified epoxy resin containing a helical acetal structure obtained in step 1), put 2.0g of E51 epoxy resin in place and measure 20g of absolute ethanol to mix at 50°C;

[0034] 3) Add 100mL of deionized water to the solution in 2), and add 0.1g of acetic acid for neutralization. After the neutralization reaction is complete, a water-based epoxy resin emulsion is obtained;

[0035] 4) Sizing agent preparation: prepare a sizing agent with the water-based epoxy resin emulsion, and keep the solid content at 2%; ...

Embodiment 2

[0038] The difference between the water-based epoxy resin emulsion in this example and the water-based epoxy resin emulsion in Example 1 is: 1) The epoxy resin used in the example is E51.

Embodiment 3

[0040] The difference between the water-based epoxy resin emulsion in this example and the water-based epoxy resin emulsion in Example 1 is that the amount of ethanol used is 12g.

[0041] The water-based epoxy resin emulsion system of this embodiment is unstable, and the precipitation increases with prolongation of standing time.

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Abstract

The invention relates to a water-based epoxy resin emulsion and its preparation method and application, which solves the technical problem that the existing water-based carbon fiber sizing agent cannot form a uniform and stable emulsion, and the effect is not ideal when used as a carbon fiber sizing agent. The invention provides a A kind of aqueous epoxy resin emulsion, its component counts 1-10 parts of modified epoxy resins according to the number of parts by mass, 2-10 parts of bisphenol A type epoxy resins, 5-50 parts of cosurfactant, 100-parts of water 400 copies. The invention also provides its preparation method and application. The invention can be used in the field of preparation of carbon fiber sizing agent.

Description

technical field [0001] The invention relates to an epoxy resin emulsion and its preparation method and application, in particular to a water-based epoxy resin emulsion and its preparation method and application. Background technique [0002] Carbon fiber-reinforced resin-based composites often use the sizing method to bundle, protect and enhance the functional group content on the surface of carbon fibers. Carbon fiber sizing agents mainly include solvent-based sizing agents and water-based sizing agents. Usually, solvent-based sizing agents require a large amount of flammable and volatile organic solvents, which will cause environmental pollution and solvent waste during production and use. In addition, the solvents are relatively volatile during the sizing process and the resin will remain on the guide rollers, which will cause subsequent passing. Fiber damage. The water-based sizing agent uses water as a solvent and has the advantages of being non-toxic, tasteless, safe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L63/00C08L63/02D06M15/55C08G59/14D06M101/40
CPCC08J3/03D06M15/55C08G59/1477D06M2101/40D06M2200/40C08J2363/00C08J2463/02C08J2363/02C08J2463/00Y02W30/62
Inventor 于运花邓桢杨小平
Owner BEIJING UNIV OF CHEM TECH
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