Cyclodextrin aqueous anticorrosive paint and preparation method thereof

Abstract

The invention provides a cyclodextrin aqueous anticorrosive paint and a preparation method thereof. The cyclodextrin aqueous anticorrosive paint comprises a cyclodextrin modified nano inorganic filler, an aqueous epoxy resin, an aqueous curing agent and water. Starting from the point of view of molecular design, the preparation method of the cyclodextrin aqueous anticorrosive paint comprises grafting a natural cyclic cyclodextrin compound onto the nano inorganic filler, and compounding with aqueous epoxy resin to prepare the aqueous anticorrosive paint. Compared with the traditional method, the preparation method greatly improves the grafting ratio of the cyclodextrin and the nano inorganic filler, thus ensuring the success of the modification. The introduction of dextrin greatly improves the problems of poor dispersion, easy agglomeration, and poor compatibility with organic resin of nano inorganic filler in aqueous anticorrosive paint, so as to improve the barrier properties of the paint, and further improve the weatherability and absorption property of the paint on corrosion particles, and anticorrosive performance of the anticorrosive coating.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a cyclodextrin water-based anticorrosion coating and a preparation method thereof. Background technique [0002] With the advancement of science and technology, the proportion of metals and alloys in people's daily production and life is increasing. However, metals are vulnerable to corrosion by corrosive media, resulting in huge economic losses, heavy casualties, severe environmental pollution, and huge waste of resources. Therefore, it is necessary to take protective measures against metals. Nowadays, the use of anti-corrosion coatings to increase the corrosion resistance of metals has become an economical and effective method. [0003] In recent years, due to the improvement of national awareness of environmental protection and the restriction of organic solvent volatilization by national legislation, more and more attention has been paid to water-based anti-corrosion coati...

AI Technical Summary

Problems solved by technology

However, poor barrier properties have become an important factor limiting the development of waterborne epoxy anticorrosion coatings

Nowadays, people usually introduce inorganic particles and water-based epoxy resin to enhance the barrier performance of coatings. However, nano-inorganic particles are easy to agglomerate and have poor homogeneity with organic resins. Stress cracking and protection defects are easy to occur at the particle aggregation, which cannot achieve good performance. Complementary effect of modification

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