The rubber powder processed from waste rubber products, mainly waste tires, can be refilled into different parts of various automobile, motorcycle and bicycle tires to reduce costs and improve tire performance and life. For example, adding about 10 portions of superfine tire powder to the tread can significantly increase the driving distance of the tire. In actual production, how are rubber powders classified? Which tires can be mixed with rubber powder in production?
Rubber powder can be divided into tire rubber powder, nitrile rubber powder, ethylene propylene rubber powder, etc. according to the type of waste raw materials, vulcanized rubber powder and activated rubber powder according to the surface activity, and superfine rubber powder, fine rubber powder, ordinary rubber powder according to the fineness. Ultra fine tire powder and activated tire powder are generally used in the production of various types of rubber tires.
1. Application and formula of rubber powder in automobile tires
A certain proportion of tire rubber powder can be added to the production of automobile tire casing. Adding 5-15 portions of rubber powder 2ELYY1122 with particle size 60-120 meshes to the truck tire tread can improve the dynamic fatigue resistance of the tread rubber, reduce the heat generated during tire driving, and extend the service life of the tire; The flex resistance of sidewall rubber can be significantly improved by adding 10-15 phr of rubber powder to the sidewall rubber.
The formula for adding activated rubber powder to the sidewall rubber of automobile tires: 40 portions of natural rubber, 35 portions of styrene butadiene rubber, 25 portions of cis polybutadiene rubber, 10 portions of activated rubber powder, 2 portions of stearic acid, 5 portions of zinc oxide, 4 portions of chemical antioxidant, 50 portions of carbon black, 7 portions of white carbon black, 7 portions of rubber oil, 2 portions of tackifier resin, 1 portion of accelerator, 1.4 portions of sulfur; 189.4 copies in total.
2. Application and formula of rubber powder in motorcycle tire tread
Motorcycle tires require that the rubber used in high-speed motion can produce high hysteresis loss, maintain good dynamic performance, and increase the friction among the tread and the ground to ensure the grip and controllability of the motorcycle tire tread; 10-30 phr of rubber powder can be mixed in the tread rubber; Reasonably adjust the formula, and the addition of rubber powder will basically not affect the puncture resistance, aging resistance, tear resistance, wear resistance and grip of motorcycle tire tread rubber.
60 for natural rubber, 20 for cis polybutadiene rubber, 20 for styrene butadiene rubber, 30 for activated modified rubber powder, 4 for zinc oxide, 2 for stearic acid, 1.5 for antioxidant, 0.9 for paraffin, 55 for carbon black, 7 for softening oil, 0.8 for rubber accelerator, and 1.3 for sulfur; Total: 202.5 copies.
3. Application and formula of rubber powder in bicycle tires
The bicycle tire is a typical bicycle tire, which has low requirements for the physical and mechanical properties of the rubber compound used. The rubber powder can be mixed in different parts of the bicycle outer tire, such as tread rubber, cord rubber, etc. The amount of rubber powder is greater than that in the production of various parts of automobile and motorcycle tires. The processing performance and finished product quality of the bicycle outer tire can be improved while reducing costs.
The reference formula of rubber powder for mixing rubber for bicycle outer tire cord fabric: 50 parts of natural rubber, 50 parts of polybutadiene rubber, 20 parts of vulcanized rubber powder, 5 parts of zinc oxide, 2.5 parts of stearic acid, 9 parts of calcium carbonate, 20 parts of mixed carbon black, 10 parts of semi reinforced carbon black, 1 part of antioxidant RD, 0.5 parts of antioxidant A, 10 parts of engine oil, 6 parts of pine tar, 0.8 parts of accelerator DM, 0.7 parts of accelerator CZ, 1.2 parts of accelerator M, and 1.8 parts of sulfur; Total: 188.5 copies.
The application of rubber powder in the tire industry is not only that, but also the later Xiaobian will continue to share with you the specific application of various rubber powder in the tire industry.
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