A kind of anti-corrosion coating based on cyclic carbonate active solvent and its preparation method and application

A technology of cyclic carbonate and active solvent, which is applied in the field of anti-corrosion coatings based on cyclic carbonate active solvent and its preparation, can solve the problems of difficult to achieve and reduce the solid content, achieve excellent mechanical properties, excellent performance, and ensure reliable The effect of construction performance

Active Publication Date: 2020-11-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the VOCs of the coating has been greatly reduced, low molecular weight aldehydes and ketones inevitably have a small amount of solvent volatilization in the early stage of coating construction, and its solid content is difficult to reach more than 95%.

Method used

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  • A kind of anti-corrosion coating based on cyclic carbonate active solvent and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Mix 85 parts of E-51 (epoxy resin), 5 parts of glycerol triglycidyl ether, 5 parts of butylene carbonate, and 5 parts of phenyltrimethoxysilane to obtain component A; Amine, 48 parts of 650 (polyamide), and 2 parts of triphenylphosphine are mixed uniformly to obtain component B; component A and component B are uniformly mixed in a mass ratio of 100:3 to obtain an anti-corrosion coating based on a cyclic carbonate active solvent .

Embodiment 2

[0031] Mix 47 parts of E-44 (epoxy resin), 8 parts of neopentyl glycol diglycidyl ether, 15 parts of ethylene carbonate, 15 parts of diphenyldimethoxysilane, and 15 parts of tetraethyl orthosilicate Obtain component A; mix 70 parts of triethylenetetramine, 18 parts of 810 (phenalkamine), 6 parts of dimethylaniline, and 6 parts of 2,4,6-tris(dimethylaminomethyl)phenol to obtain B Components: Mix component A and component B uniformly in a mass ratio of 100:15 to obtain an anti-corrosion coating based on a cyclic carbonate active solvent.

Embodiment 3

[0033] 30 parts of E-51 (epoxy resin), 30 parts of E-20 (epoxy resin), 5 parts of 1,4-butanediol diglycidyl ether, 22 parts of trimethylolpropane triglycidyl ether, 6 Parts of glycerol carbonate and 7 parts of dimethyldimethoxysilane were mixed uniformly to obtain component A; 30 parts of diethylenetriamine, 55 parts of 651 (polyamide), 15 parts of 2,4,6-tri(dimethyl Aminomethyl) phenol is uniformly mixed to obtain component B; component A and component B are uniformly mixed according to a mass ratio of 100:25 to obtain an anti-corrosion coating based on a cyclic carbonate active solvent.

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Abstract

The invention discloses an anticorrosive coating material based on a cyclic carbonate active solvent, a preparation method and applications thereof. The anticorrosive coating material comprises a component A and a component B, wherein the component A comprises: 25-85 parts by weight of an epoxy resin, 5-30 parts by weight of an enhanced reactive solvent, 5-40 parts by weight of a cyclic carbonateactive solvent, and 5-30 parts by weight of a coupling agent, the cyclic carbonate active solvent is selected from ethylene carbonate, propylene carbonate, butylene carbonate, vinylethylene carbonateand glycerin carbonate, and the component B comprises: 70-98 parts by weight of a curing agent and 2-30 parts by weight of a catalyst. According to the present invention, the coating material has characteristics of low viscosity, good construction performance, low VOC, environmental protection and health; and particularly the active hydroxyl group formed by the reaction of the cyclic carbonate active solvent can be further cross-linked with the coupling agent to form a double cross-linked network to improve the overall performance of the coating so as to effectively solve the contradiction between the good workability of the coating material and the excellent coating performance.

Description

technical field [0001] The invention belongs to the field of epoxy anticorrosion coatings, and in particular relates to an anticorrosion coating based on a cyclic carbonate active solvent and a preparation method and application thereof. Background technique [0002] Traditional solvent-based coatings are often accompanied by a large amount of solvent volatilization during the painting process, which not only affects the health of construction personnel and damages the environment; moreover, the volatilized solvents tend to leave pinhole defects in the coating structure and become the weak link in the coating , so that the corrosion factor can penetrate into the substrate through pinholes and directly cause corrosion to the substrate. In contrast, low VOCs and high solid content are an important development trend of coatings. The key to preparing this type of coating is to dilute the resin with a low-volatility reactive solvent to obtain a "solvent-free coating." This kind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/20C09D7/63C08G59/18
CPCC08G59/18C09D5/08C09D7/20C09D7/63C09D163/00C08K5/5419
Inventor 张广照张国梁马春风陈梓鑫
Owner SOUTH CHINA UNIV OF TECH
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