Modified polyaspartic acid ester DTM anticorrosive paint and preparation method thereof

Abstract

The invention relates to a modified polyaspartic acid ester DTM anticorrosive paint. The paint comprises a component A and a component B. The component A comprises the following components in parts by weight: 40-60 parts of polyaspartic acid ester, 30-40 parts of an antirust base material, 4-8 parts of an auxiliary agent A and 5-15 parts of a solvent A. The component B is hydrophilic modified polyisocyanate and comprises 80 to 110 parts of HDI tripolymer, 1 to 3 parts of an auxiliary agent B and 1 to 5 parts of a solvent B. The invention also relates to a preparation method of the modified polyaspartic acid ester DTM anticorrosive paint. The paint is simple in preparation process, and has the advantages of environmental protection, easy construction, corrosion resistance, curing at normal temperature and the like; the solid content of the paint is 100%, and zero emission of VOC is achieved; raw materials do not need to be subjected to dehumidification, environmental humidity does not need to be controlled in a construction process, the activation period of the paint is long, and a construction window is wide; and the paint has large adhesive force to a metal surface, has good waterproof and anti-corrosion performance, can directly coats the metal surface, and does not need to be matched with primer.

Description

technical field [0001] The invention relates to the technical field of polyaspartic acid ester coatings, in particular to a modified polyaspartic acid ester DTM anticorrosion coating and a preparation method thereof. Background technique [0002] Traditional polyaspartic ester coatings are obtained by reacting polyaspartic acid secondary amino groups with isocyanate. The raw materials need to strictly control the moisture content, and the activation period is greatly affected by the ambient humidity, so it is necessary to strictly control the moisture content of the raw materials. rate and humidity during construction to avoid shortening the construction window due to humidity. The construction process of such polyaspartic ester coatings is complicated and the energy consumption is too high. There are many uncertain factors during construction, and it is difficult to achieve the ideal construction window period. , requires special conditions such as double-pipeline spray gun...

AI Technical Summary

Problems solved by technology

[0002] Traditional polyaspartic ester coatings are obtained by reacting polyaspartic acid secondary amino groups with isocyanate. The raw materials need to strictly control the moisture content, and the activation period is greatly affected by the ambient humidity, so it is necessary to strictly control the moisture content of the raw materials. rate and humidity during construction to avoid shortening the construction window due to humidity. The construction process of such polyaspartic ester coatings is complicated and the energy consumption is too high. There are many uncertain factors during construction, and it is difficult to achieve the ideal construction window period. , requires special conditions such as double-pipeline spray gun equipment and low humidity environment

[0003] At the same time, the traditional polyaspartate coating has poor adhesion to metal substrates, and its anti-corrosion performance is poor, so it cannot directly act on the metal surface (DTM)

[0004] In addition, even in the case of high solid content, the traditional polyaspartic ester coating will still have VOC volatilization, which is poor in environmental protection

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