Tarpaulins are commonly dyed with sulfuric acid and chloride titanium dioxide.

Titanium dioxide is used when tarpaulin is dyed. There are several types of titanium dioxide. Do you know which titanium dioxides are commonly used? The following is a simple to share with you, I hope to help you. 1. Titanium dioxide by sulfuric acid method: The basic process of titanium dioxide by sulfuric acid method is to first hydrolyze acid-soluble titanium-containing raw materials with sulfuric acid to form a porous solid phase, and then leaching with water to obtain titanium oxysulfate solution (called black liquor), which is purified and concentrated. After treatment, add water to hydrolyze to form a white metatitanic acid precipitate, and then after purification and other treatments, high temperature calcination can be used to obtain titanium dioxide. Compared with titanium chloride, its raw materials are cheap and easy to obtain, with less investment, mature technology and simple equipment, but its production process is long, there are many processes, three wastes, large pollution, intermittent operation, high labor intensity, and slightly poor product quality. 2. Chlorinated titanium dioxide: The basic process of chlorinated titanium dioxide is to first mix titanium raw materials and petroleum coke in a certain proportion, and then pass chlorine gas for chlorination to obtain titanium tetrachloride. After purification and purification of titanium tetrachloride, oxygen is used. Titanium dioxide is obtained by oxidation, and chlorine gas is returned to continue chlorination. Titanium dioxide obtained by oxidation also needs to undergo processes such as salt treatment and coating to obtain good products. Compared with the sulfuric acid method, titanium dioxide has a shorter process flow and less waste. However, it has high requirements on raw materials, serious equipment corrosion, and easy clogging of the reactor in the oxidation stage. It is technically difficult, continuous production, and operation requires a complex control system. Tarpaulin is a waterproof material with high strength, good toughness and softness. It is often used as canvas, polyester with polyurethane coating or made into polyethylene plastics. Color is an important factor to consider when designing tarpaulin products. Tarpaulins often have sturdy grommets at the corners or edges for easy lashing, hanging or covering. The color of the tarpaulin will affect the light and temperature in the tent, and the tarpaulin with higher brightness has higher light transmittance.
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