Application, composite anti-rusting pigment and parathion method of calcium phosphate aluminum silicate

Abstract

The invention discloses application, a composite anti-rusting pigment and a parathion method of calcium phosphate aluminum silicate. The anti-rusting pigment comprises, by weight, 50-75 parts of aluminum phosphate, 5-15 parts of aluminum silicates, 5-15 parts of calcium silicate, 10-30 parts of filler and 0.1-5 parts of additive. The parathion method of the calcium phosphate aluminum silicate composite anti-rusting pigment comprises the following steps of mixing at least three materials including the aluminum silicate, the calcium silicate and the aluminum silicate of all raw materials with water, keeping the temperature to be in a range from 20 DEG C to 100 DEG C, and continuously performing stirring 1.5-12 hours; adding the remaining materials into the mixture to be mixed evenly, and then performing centrifugal dewatering, drying and smashing. The anti-rusting pigment has the advantages of being non-toxic, environment-friendly and efficient and can completely take the place of red lead, zinc chrome and other traditional toxic heavy metal anti-rusting pigments used in industrial coatings.

Description

technical field [0001] The invention relates to the field of antirust pigments, in particular to the use of calcium aluminum phosphosilicate and its composite antirust pigment and a preparation method. Background technique [0002] For a long time, the performance and safety of anti-rust pigments in metal anti-corrosion coatings have been the focus of discussion and research, looking for efficient, safe and environmentally friendly lead and chrome anti-rust pigments (red lead, zinc chrome yellow) Effective substitutes have become an urgent problem to be solved in the pigment industry at home and abroad. So far, the non-lead and non-chromium pigments that have been studied include phosphates, molybdates, borates, ferrites, ion exchange pigments, etc. Among them, phosphate series pigments occupy a large proportion in terms of variety, performance and application range. a very important position. Typical examples of phosphate pigments are zinc phosphate developed by Harrison ...

AI Technical Summary

Problems solved by technology

Long-term application practice shows that both pigments have the following disadvantages: low water solubility, poor early rust resistance, especially in water-based paints, cannot well overcome the early "flash rust" problem

[0004] At present, the phosphate composite antirust pigments on the market at home and abroad mainly include composite zinc phosphate and modified zinc phosphate, aluminum tripolyphosphate and modified aluminum tripolyphosphate, zinc phosphomolybdate, zinc iron phosphate and phosphite Composite pigments, etc., but there is no report about calcium aluminum phosphosilicate as an antirust pigment

Moreover, the main material elements of terminal products in foreign developed countries are phosphorus, aluminum, and zinc. The cost of these raw materials is generally high, which limits their popularization and application.