What are the commonly used materials for tarpaulin dyeing

Tarpaulin is a waterproof material with high strength, good toughness and softness. It is often used as canvas, polyester with polyurethane coating or made of polyethylene plastic. Color is an important factor to consider when designing a product. Tarpaulins usually have sturdy grommets at the corners or edges to facilitate tying, hanging or covering through ropes. Its color will affect the light and temperature in the tent, and the tarpaulin with higher brightness has higher light transmittance. When the tarpaulin is dyed, titanium dioxide is used. There are several kinds of titanium dioxide, and the commonly used titanium dioxide is chloride titanium dioxide and sulfuric acid titanium dioxide. The basic process of chlorination titanium dioxide is to first mix titanium raw material and petroleum coke in a certain proportion, and then pass chlorine gas for chlorination to obtain titanium tetrachloride. After purification and purification, titanium tetrachloride is oxidized with oxygen to obtain titanium dioxide, and the chlorine gas returns Continue chlorination and oxidation to obtain titanium dioxide that also needs to undergo processes such as salt treatment and coating to obtain good products. Compared with sulfuric acid titanium dioxide, the dyeing process of tarpaulin is shorter and the waste is less, but it has high requirements on raw materials, serious equipment corrosion, easy to block the reactor in the oxidation stage, technical difficulty, continuous production, and operation requires a complex control system .
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