Surface modification of mica powder and its application in industrial anti-corrosion coatings

Mica has excellent chemical inertness, so it can improve the anti-corrosion properties of coatings such as neutral salt spray resistance, acid resistance, alkali resistance, etc.

However, like many natural minerals, mica has a hydrophilic and oleophobic surface, and is difficult to wet and disperse in the organic phase.

Therefore, in order to give full play to the function of mica, so that the mica can be uniformly dispersed in the coating system, and can form a stable interface with the coating resin after curing, so as to improve the performance of the anti-corrosion coating, it is possible to consider pre-treatment and surface modification of the mica, and then Add it to the coating system

Yang Tianyu et al.

(1) The use of silane modifier to modify mica powder can significantly improve the application performance of mica in the coating system.

(2) The modified mica powder is better than the unmodified mica powder in improving the production efficiency and application performance of the coating system

(3) The addition of mica powder has no obvious adverse effect on the physical properties of the coating film

(4) When the addition amount of mica powder is less than 5%, the anti-corrosion performance of the coating film is slightly poor.

(5) Comprehensive production efficiency and anti-corrosion performance, in industrial anti-corrosion coatings, the reasonable addition amount of unmodified mica powder is 8% to 12%, and the reasonable addition amount of modified mica powder is 10% to 15%.
the best overall performance
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