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Side-group long-chain azidated epoxy resin and synthesis technique thereof

A technology of nitriding epoxy resin and nitriding epoxy resin, applied in epoxy resin coatings, coatings, etc., can solve the problems of insufficient surface adhesion of wet substrates, poor toughness of epoxy resin-based anti-corrosion coatings, etc. , to achieve the effect of long-term effect, strong adhesion and improved adhesion

Inactive Publication Date: 2014-10-08
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Epoxy resin-based anti-corrosion coatings have the disadvantages of poor toughness and insufficient adhesion on wet substrate surfaces

Method used

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  • Side-group long-chain azidated epoxy resin and synthesis technique thereof
  • Side-group long-chain azidated epoxy resin and synthesis technique thereof
  • Side-group long-chain azidated epoxy resin and synthesis technique thereof

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Embodiment Construction

[0037] The present invention can be explained in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0038] Two azide fragments were synthesized using 2-chloroethanol and 3-chloropropanol respectively: (a) HO-CH 2 CH 2 -N 3 and (b) HO-CH 2 CH 2 CH 2 -N 3 . Then HDI and TDI were selected to carry out chain extension grafting on E20 epoxy resin, and four kinds of side group long chain azide epoxy resins with different structures were prepared, respectively:

[0039]

[0040] The synthetic process parameter of embodiment one to embodiment four of the present invention is as shown in table 2:

[0041] Table 2 Example synthesis process parameters

[0042]

[0043]

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Abstract

The invention relates to a side-group long-chain azidated epoxy resin and a synthesis technique thereof. By controlling the addition amount of azide, reaction temperature, reaction time and other conditions, the long-chain azido group is grafted on the hydroxy group of the epoxy resin to prepare the side-group long-chain azido epoxy resin. The azido group can form strong coordinate bond with the metal atoms of the substrate, thereby effectively enhancing the adhesive force of the coating for the metal substrate. Meanwhile, the side-group long chain has high hydrophobic action, and thus, is capable of effectively eliminating the water content on the substrate surface in the curing process and enhancing the adhesive force of the coating on the wet metal substrate surface by 90% or so. The side-group long-chain azidated epoxy resin can be used for developing the anticorrosive paint for wet metal substrate surfaces with higher adhesive force, better shielding performance and long effective period, and can provide an effective technical way for development of underwater construction anticorrosive paints.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a side group long-chain azide epoxy resin and a preparation method thereof. Background technique [0002] Epoxy resin is one of the most important base resins for anti-corrosion coatings. It has excellent adhesion and low shrinkage, and has good corrosion resistance and impermeability to fresh water, sea water, medium-strength acids and alkalis, etc. Fillers and additives are well miscible, and can be made into various types of anti-corrosion coatings such as solvent-based, solvent-free and high-build types. Solvent-free anti-corrosion coatings with the characteristics of fast curing speed, high viscosity and strong surface adhesion to wet substrates can be used for underwater construction. [0003] Epoxy resin-based anti-corrosion coatings have the disadvantages of poor toughness and insufficient adhesion on wet substrate surfaces. At present, the chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/14C09D163/00
Inventor 黄从树王晶晶叶章基
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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