The Ministry of Industry and Information Technology recently issued the "Tire Industry Policy," which states that it encourages the development of safe, energy-saving, environmentally friendly high-performance radial tires, giant engineering radial tires, wide-sectioned, flat passenger radial tires, and no-tube-tired radial tires. In 2015, the radialization rate of passenger tires reached 100%, the radialization rate of light-duty truck tires reached 85%, and the radialization rate of heavy-duty trucks reached 90%. The policy points out that the development of bias tires will be strictly limited, and in addition to aviation tires, no new diagonal tire production capacity will be added. We will phase out biased tires with an annual output of 500,000 or less and tire production lines with natural cotton cord fabric as the skeleton. The policy stipulates that the newly-built, rebuilt or expanded radial truck tires project should have a production capacity of 1.2 million or more per year; the construction of new light-duty truck radial tires and passenger car radial tires should be completed. The production capacity should reach an annual output of 600. Ten thousand or more. Newly built, rebuilt or expanded tire projects, the overall energy consumption should be less than 950 kg standard coal/tonne three glue.
Zinc Stearate is a "zinc soap" that is widely used industrially. It is a white solid that repels water. It is insoluble in polar solvents such as alcohol and ether but soluble in aromatic hydrocarbons (e.g., benzene) and chlorinated hydrocarbons when heated. It is the most powerful mold release agent among all metal soaps. It contains no electrolyte and has a hydrophobic effect. Its main application areas are the plastics and rubber industry, where it is used as a releasing agent and lubricant which can be easily incorporated.
It is widely used as a release agent for the production of many kinds of objects: rubber, polyurethane, polyester processing system, powder metallurgy. These applications exploit its "non-stick" properties. In cosmetics, zinc stearate is a lubricant and thickening agent used to improve texture.
It is an "activator" for accelerated rubber sulfur vulcanization. As discovered in the early days of vulcanization, zinc has a beneficial effect on the reaction of the sulfur with the polyolefin. The stearate is a form of zinc that is highly soluble in the nonpolar medium of the polyolefins.
Being lipophilic, it functions as a phase transfer catalyst for the saponification of fats.
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December 08, 2024