Water epoxy anticorrosion paint and preparation method thereof

An anti-corrosion coating and water-based epoxy technology, used in the field of coatings and paint coatings, can solve the problems of poor paint film fullness, easy powdering of paint films, poor weather resistance, etc. The effect of improving weather resistance and alkali resistance

Inactive Publication Date: 2008-03-26
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still relatively few commercialized varieties of water-based epoxy coatings, and many aspects of performance are far inferior to solvent-based epoxy coatings, such as poor outdoor weather resistance, easy chalking of the paint film, loss of gloss, poor fullness of the paint film, etc. Epoxy resin coatings also need to add some materials in the water-based production process to improve their performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0024] The so-called water-based epoxy paint of the present invention can include chitin water-based epoxy varnish, chitin water-based epoxy paint and chitin water-based epoxy anti-corrosion paint. It uses chitin (chitosan), a natural high molecular polymer, which has the characteristics of strong emulsifying ability and good dispersion performance, and combines it with epoxy resin to prepare a new type of chitin water-based epoxy coating. The water-based epoxy emulsion in the invention has a pH value of 5-6, is acidic, and contains alcohol solvents, emulsifiers, dispersants and auxiliary agents, and the chitosan solution acts as a thickener in the paint. The chitin used is one of chitin or chitosan, a derivative of chitin, or a mixture thereof.

[0025] Several specific embodiments are provided below:

Embodiment 1

[0027] The following raw materials were weighed by weight unit: epoxy resin 38; butanol 5; emulsifier 600 5; OP-10 1; 10% concentration of dispersant IW solution 4.5; chitosan solution 30; deionized water 20. Heat the epoxy resin to 60-70°C, add butanol and stir evenly, then add emulsifier and OP-10 (OP-10 is also called Triton-100) and continue stirring to obtain substance A; Chitosan solution Add deionized water and stir evenly, then add 10% concentration of dispersant IW solution, and disperse substance B in a high-speed shear emulsifier; disperse substance A in a high-speed shear emulsifier while slowly pouring it into substance B, A chitin epoxy resin emulsion is obtained.

[0028] Take the following raw materials by weight unit: chitin epoxy resin emulsion 47, iron oxide red 21, zinc phosphate (antirust pigment) 9, talcum powder 9, defoamer 0.3, leveling agent 0.3, anti-flash rust agent 0.4, Deionized water 9; polyamide 650 60, monobutyl ether 40.

[0029] Preparation ...

Embodiment 2

[0032] Weigh the following raw materials by weight unit: epoxy resin 40, butanol 4, emulsifier 600 4, OP-10 1.0, 10% concentration of dispersant IW solution 4, chitosan solution 32, deionized water 18. Heat the epoxy resin to 60-70°C, add butanol and stir evenly, then add emulsifier and OP-10 and continue stirring evenly to obtain substance A; add chitosan solution into deionized water and stir evenly, then add 10% concentration The IW solution of the dispersant is dispersed in a high-speed shear emulsifier to obtain substance B; the substance A is dispersed in a high-speed shear emulsifier while slowly pouring into substance B to obtain a chitin epoxy resin emulsion.

[0033] Weigh the following raw materials by weight unit: chitin epoxy resin emulsion 50, iron oxide red 20, zinc phosphate 10, talcum powder 10, defoamer 0.25, leveling agent 0.35, anti-flash rust agent 0.45, deionized water 8; Polyamide 650 58, monobutyl ether 38.

[0034] Preparation of component A: Mix the ...

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Abstract

The present invention is one kind of water soluble anticorrosive paint and its preparation process, and belongs to the field of paint technology. The water soluble anticorrosive paint consists of two components, including the component A comprising chitin-epoxy resin emulstion 45-50 weight portions, ferric oxide red 20-22 weight portions, antirust pigment 8-10 weight portions, talcum powder 8-10 weight portions, defoaming agent 0.25-0.35 weight portions, leveling agent 0.25-0.35 weight portions, flash rust resistant 0.35-0.45 weight portions and deionized water 8-10 weight portions; and the component B comprising polyamide 650 58-62 weight portions and alcohol ether solvent 38-42 weight portions. The water soluble anticorrosive paint has excellent emulsifying performance, high protecting performance, good antisepsis and anti-mildew performance, high weather resistance and high alkali tolerance.

Description

technical field [0001] The invention relates to a coating, in particular to a water-based epoxy anticorrosion coating containing chitin solution and a preparation method thereof, belonging to the technical field of paints and coatings. Background technique [0002] Chitin, also known as chitin, chitin, and chitosan, is a white or yellowish translucent solid that is widely found in the crustaceans of arthropods such as crabs, shrimps, and insects, and plant cell walls. molecular polymer. Because chitin contains a variety of functional groups, it has strong reactivity. It can be cross-linked and grafted, acylated, sulfonated, carboxymethylated, alkylated, nitrated, halogenated, oxidized, complexed, etc. reaction to generate chitin derivatives with different properties. Chitin is also a natural polymer surfactant. Its molecular weight is above several thousands, and it has the characteristics of strong emulsifying power, good dispersibility and non-toxicity. In addition, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D5/02C09D177/00C09D105/08
Inventor 陈颖敏王启明
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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