At present, there are four main treatment methods for waste tires: tire repair, tire rubber powder, tire reclaimed rubber and thermal cracking. The tire rubber powder is simpler than the tire reclaimed rubber production process, and can be used as a filler in rubber products, reducing Raw material costs. When natural rubber is used as the main raw material to produce ordinary acid and alkali resistant rubber sheets, a small amount of tire reclaimed rubber can not only reduce the cost, but also improve the comprehensive performance of the acid and alkali resistant rubber sheet 1JLYY923.
1. Acid and alkali resistant rubber plate reference formula containing tire rubber powder
100 parts of natural rubber, 5 parts of zinc oxide, 1 part of stearic acid, 3 parts of antioxidant, 10 parts of carbon black, 30 parts of clay, 60 parts of barium sulfate powder, 30 parts of talcum powder, 10 parts of tire rubber powder, accelerator 1.5 Parts, sulfur 2.5 parts; total: 253 parts.
2. The role of tire rubber powder in acid and alkali resistant rubber sheets
Tire rubber powder processed from waste tires is generally used as a rubber filler in acid-resistant rubber sheets. The compounding agent such as vulcanizing agent, accelerator and anti-aging agent added in the tire production process is not removed during the processing of the rubber powder, so the tire rubber powder activity is higher than that of the ordinary rubber filler, and the dispersibility in the rubber is better; acid resistance In the production process of alkali rubber sheets, the addition of tire rubber powder will increase the reactivity of the rubber compound and improve the processing technology of the rubber sheet.
From the point of view of reinforcing performance, the finer the tire rubber powder used in the general acid-resistant rubber sheet and the more the filling amount, the higher the mechanical strength of the vulcanized rubber and the better the wear resistance; therefore, in the acid-resistant rubber sheet formulation Adding an appropriate amount of tire rubber powder can improve the mechanical strength and wear resistance of the rubber sheet.
3.Natural rubber acid and alkali resistant board formula design skills with tire rubber powder
Maybe you will ask? Natural rubber has poor acid and alkali resistance. Can it be used to produce acid and alkali resistant rubber sheets? In fact, you don't have to worry about this: Adding the right amount of barium sulfate powder to the natural rubber acid-base rubber plate formula can give the rubber compound good acid and alkali resistance.
When using the tobacco sheet rubber and the miscellaneous rubber as the main raw materials to produce acid and alkali resistant rubber sheets, the appropriate amount of tire rubber powder, clay and talcum powder can further reduce the production cost, improve the process performance of the rubber compound, and improve the machinery of acid and alkali resistant rubber sheets. Strength, wear resistance, surface smoothness, stiffness and compression set resistance. The use of semi-reinforcing carbon black in the natural rubber acid-base rubber sheet formulation can improve the mechanical strength and elasticity of the rubber sheet, and the combination of the protective wax and the rubber anti-aging agent can delay the aging time of the acid-resistant rubber sheet.
When using tire rubber powder in the acid-resistant rubber sheet with natural rubber as the main raw material to reduce the cost, improve the process performance and comprehensive indicators, it is necessary to control the amount of tire rubber powder reasonably, usually controlled at 10-20 parts to ensure resistance. Acid-base rubber sheet product performance and service life.
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