| Abstract [eng] |
The paint is widely used for coloring various objects or for pigmented coating of the surface for a decorative or protective effect. There are many types of paint, the use of which is decided according to the purpose and use of the object. Titanium oxide is used as a bleaching agent in the production of white silicate water-based paints, which has the highest value in the total cost of the paint. The aim is therefore to look for a way in which at least part of it can be replaced by cheaper components or even production waste. One such waste could be the phosphogypsum formed by AB „Lifosa“, calcium sulphate, which is visually very white. Phosphogypsum as a white filler was also tested in rubber production, with positive results at the white level. AB „Lifosa“ generates about 2 million tons of phosphogypsum - chemically contaminated waste, which pollutes the environment and has a negative impact on it. These ecological factors encourage scientists to study how to recycle and use phosphogypsum. The aim of this work is to produce white, textured, water-based paints using silicate waste - phosphogypsum, which would correspond in quality to industrial paints. Preliminary studies have shown that phosphogypsum is only suitable as a dye filler. The study produced high-quality paints that complied with paint regulations. |
