Polyaspartic acid ester resin, preparation method, and anticorrosive paint and preparation method thereof

A technology of aspartic acid ester and anti-corrosion coating, which is applied in the direction of polyurea/polyurethane coating, anti-corrosion coating, coating, etc., and can solve the problems that affect the coating's corrosion resistance, easy flocculation, poor dispersion and compatibility, etc.

Inactive Publication Date: 2018-05-04
CHANGSHA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if graphene oxide is directly added to the polyurea coating prepared by the polyaspartic acid resin obtained by the above method, only polyaspartic acid ester is directly coated on the surface of graphene oxide, and the dispersion and compatibility are poor. , easy to flocculate, directly affect the corrosion resistance of the coating

Method used

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  • Polyaspartic acid ester resin, preparation method, and anticorrosive paint and preparation method thereof
  • Polyaspartic acid ester resin, preparation method, and anticorrosive paint and preparation method thereof
  • Polyaspartic acid ester resin, preparation method, and anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0060] Preparation method reference example 1 of aminosilane modified graphene oxide

[0061] Add 1.5 parts by weight of graphene oxide to 500 parts by weight of ethanol aqueous solution (mixed with 30 parts by weight of deionized water and 470 parts by weight of absolute ethanol), heat up to 60°C, stir thoroughly for 30 minutes, and then add 1300 parts by weight of aminosilane coupling agent Ethanol solution (14 parts by weight of aminosilane coupling agent KH550 dispersed in 1286 parts by weight of absolute ethanol), after heating up to 78°C, heat-preserved and refluxed for 12 hours, cooled to room temperature, left to stand, and centrifuged to separate the precipitate with absolute ethanol After washing once, wash twice with acetone, and finally dry in vacuum at 50° C. for 10 h, and then it is ready.

[0062] Preparation method reference example 2 of aminosilane modified graphene oxide

[0063] Add 1.5 parts by weight of graphene oxide to 600 parts by weight of methanol aq...

Embodiment 1～3

[0067] Polyaspartic acid ester resin embodiment 1~3 raw material components and proportioning ratio are shown in Table 1:

[0068] Table 1 Raw material components and proportions of polyaspartic acid ester resin examples 1-3

[0069]

[0070] Note: "-" in the table means not added.

Embodiment 1

[0072] According to Table 1, the raw material components and proportions in Example 1, mix and stir aminosilane-modified graphene oxide, binary primary amine and basic catalyst, and after heating up to 60°C, add maleic acid ester dropwise for 30 minutes After the dropwise addition, continue to raise the temperature to 100°C, and keep it warm for 11 hours. The conversion rate of the amine value measured by JIS K7327 method is 97.00%. Stop heating and cool to room temperature to obtain polyaspartic acid ester resin 1.

[0073] After testing, the obtained polyaspartic acid ester resin 1 was centrifuged at a high speed of 4000 r / min for 30 min, and no black precipitate was precipitated.

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Abstract

The invention discloses a polyaspartic acid ester resin, a preparation method, and an anticorrosive paint and preparation method thereof. The resin is mainly prepared from following raw materials in parts by weight: 2 to 5 parts of amino silane modified graphene oxide, 10 to 30 parts of binary primary amine, 0.1 to 0.3 part of alkaline catalyst, and 25 to 25 parts of maleate. The preparation method comprises the following steps: stirring amino silane modified graphene oxide, binary primary amine, and an alkaline catalyst, heating, dropwise adding maleate, heating, carrying out reactions at a constant temperature, and cooling. The anticorrosive paint is prepared by blending a component A and a component B, wherein the component A comprises aliphatic isocyanate and an elastic curing agent, and the component B comprises polyaspartic acid ester resin, an anti-settling agent, a pigment, a filling material, a molecular sieve, an antifoaming agent, a leveling agent, a dispersant, a hydroxyl acrylic resin, and an organic solvent. The invention also discloses a preparation method of the anticorrosive paint, which has the advantages of high solid content, good coating elasticity, good impactresistant performance, and excellent anticorrosive performance. The resin dispersibility is good.

Description

technical field [0001] The invention relates to an ester resin, a preparation method, an anti-corrosion coating and a preparation method, in particular to a polyaspartic acid ester resin, a preparation method, an anti-corrosion coating and a preparation method. Background technique [0002] Polyaspartate polyurea is a low-activity, slow-response aliphatic polyurea that appeared after aromatic polyurea and conventional aliphatic polyurea. Compared with traditional polyurea, it is simpler and more convenient in construction operation, has relatively low requirements for equipment, and has greatly improved coating performance. Reduced and poor adhesion and other issues. [0003] CN105440272A discloses a preparation method of polyaspartic acid ester resin, which is to first chemically react polyether amine and maleate, and then add cyclocarbonate for chemical reaction; CN101817924A discloses a slow-response polyurea The preparation of coating components is to catalyze dicarbox...

Claims

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Application Information

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IPC IPC(8): C08G69/42C09D175/02C09D5/08C08G18/60C08G18/62
CPCC08G18/603C08G18/6229C08G69/42C09D5/08C09D175/02
Inventor 刘迎新李艳华唐健王闱
Owner CHANGSHA UNIVERSITY
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