Non-ionic reaction epoxy resin emulsifying agent and preparation method thereof

A non-ionic reaction type, epoxy resin technology, applied in the direction of epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of poor corrosion resistance of coating films, easy to be destroyed, poor emulsion stability, etc., to achieve a balance Strong resistance, improved corrosion resistance, high curing effect

Active Publication Date: 2019-05-10
常熟耐素生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the epoxy end group is lipophilic and the hydroxyl end group is hydrophilic, the emulsion balance prepared by using it is easily destroyed, and the emulsion stability is poor, and because the end hydroxyl group does not participate in the curing reaction, it exists in a free form, so that the prepared coating film is durable. Poor corrosion performance

Method used

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  • Non-ionic reaction epoxy resin emulsifying agent and preparation method thereof
  • Non-ionic reaction epoxy resin emulsifying agent and preparation method thereof
  • Non-ionic reaction epoxy resin emulsifying agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 350g of cardiotonic polyether into a reactor with heating and stirring device, heat to 90℃ to melt into liquid, then add 2.5g of boron trifluoride-ether solution, stir well, then slowly add 150g of bisphenol A epoxy After mixing the resin, it is sealed and reacted at 90℃ for 3 hours. When the reaction is complete and the epoxy equivalent index reaches the theoretical value, 10g of sodium hydroxide aqueous solution with a mass concentration of 5% is added for neutralization, and the material is discharged to obtain a non-ionic reaction Type epoxy resin emulsifier.

Embodiment 2

[0043] Add 350g of cardiotonic phenol polyether into a reactor with heating and stirring device, heat to 90℃ to melt into liquid, then add 2.5g of boron trifluoride-ether solution, stir well, and then slowly add 170g of bisphenol A epoxy After mixing the resin, it is sealed and reacted at 90℃ for 3 hours. When the reaction is complete and the epoxy equivalent index reaches the theoretical value, 10g of sodium hydroxide aqueous solution with a mass concentration of 5% is added for neutralization, and the material is discharged to obtain a non-ionic reaction Type epoxy resin emulsifier.

Embodiment 3

[0045] Add 350g of cardiotonic polyether into a reactor with heating and stirring device, heat to 90℃ to melt into liquid, add 5g of potassium persulfate solution, stir well, then slowly add 170g of bisphenol A epoxy resin, and stir well. , Sealed reaction at 90 ℃ for 3 hours, when the reaction is complete, the epoxy equivalent index reaches the theoretical value, add 10g of sodium hydroxide aqueous solution with a mass concentration of 5% for neutralization, and discharge the non-ionic reactive epoxy resin emulsification Agent.

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Abstract

The invention discloses a non-ionic reaction epoxy resin emulsifying agent and a preparation method thereof. The preparation method includes the steps: adding cardiac phenol polyether into a reactionkettle, and heating and melting the cardiac phenol polyether; sequentially adding a catalyst I and bisphenol A epoxy resin, uniformly stirring and mixing materials, and performing closed reaction until an epoxide equivalent index reaches a theoretical constant value; diluting mixture to reach neutral by alkaline solution to obtain the non-ionic reaction epoxy resin emulsifying agent. According tothe preparation method of the non-ionic reaction epoxy resin emulsifying agent, a technological process is simple, a reaction process is easily controlled, the bi-functional cardiac phenol polyether serves as a raw material, epoxy ring-opening reaction between the bi-functional cardiac phenol polyether and the bisphenol A epoxy resin is creatively implemented, so that the prepared non-ionic reaction epoxy resin emulsifying agent is high in structural balance, high in curing degree, excellent in comprehensive performance and wide in market prospect, and the corrosion resistance of the emulsifying agent is effectively improved.

Description

Technical field [0001] The invention relates to the field of emulsifiers, in particular to a non-ionic reactive epoxy resin emulsifier and a preparation method thereof. Background technique [0002] Studies have shown that among waterborne epoxy emulsions, solid epoxy resin emulsions have better anticorrosion properties. At present, most of the non-ionic emulsifiers on the market are prepared with large molecular weight polyethylene glycol and bisphenol A epoxy resin as main raw materials, which are macromolecules with epoxy groups at one end and hydroxyl groups at the other end. Since the epoxy end groups are lipophilic and the hydroxyl end groups are hydrophilic, the balance of the emulsion prepared with it is easily broken, and the emulsion stability is poor. Moreover, since the end hydroxyl groups do not participate in the curing reaction, they exist in free form, making the coating film resistant The corrosion performance is poor. Summary of the invention [0003] The main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/00C09D163/00C09D5/08
Inventor 蔡秀刚顾斌张文鹏戴志成
Owner 常熟耐素生物材料科技有限公司
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