With the continuous progress of vulcanized rubber powder processing technology, the rational use of vulcanized rubber powder has become one of the main ways to reduce costs in the rubber product industry. At present, vulcanized rubber powder can be used as the main material in the rubber product industry, and can also play the role of low-cost filler. In order to expand the application range of vulcanized rubber powder in rubber and increase the blending ratio, the rubber products industry continuously introduces new products of high-precision vulcanized rubber powder, improves the quality of vulcanized rubber powder, or uses modifiers to modify the surface of vulcanized rubber powder. Sex.
1. The role of vulcanized rubber powder in rubber products
The main purpose of rubber products manufacturers using vulcanized rubber powder is to reduce the cost of raw materials, but the role of vulcanized rubber powder in rubber products is not only that. Vulcanized rubber powder filled as rubber filler in rubber products can reduce the viscosity of the rubber compound, prevent the rubber compound gas, reduce the deformation of semi-finished products, is conducive to the exhaust gas during rubber processing, reduce the probability of bubbles in the vulcanized rubber; and can be improved Extrusion performance of rubber compound. Tests show that the aging resistance and crack resistance of the rubber compound after adding vulcanized rubber powder are better than those without rubber powder.
Different varieties of vulcanized rubber powder have different functions in rubber products. For example, tire rubber powder can improve the wear resistance and crack resistance of rubber. Vulcanized rubber mixed with EPDM powder is resistant to high and low temperature, aging resistance, Ozone resistance is better, to improve the oil resistance of rubber products, you can choose nitrile rubber powder and so on. Therefore, the rational use of vulcanized rubber powder can not only reduce the production cost of rubber products, but also improve the process performance of rubber compounds, and also improve the comprehensive index of rubber products.
2. Factors that affect the effect of blending vulcanized rubber powder in rubber products
Vulcanized rubber powder as a powdered granular rubber material, the specific surface area, surface activity and composition of vulcanized rubber powder will affect its effect in rubber. In general, the higher the fineness of the rubber powder, the smaller the particle size, the better the performance, the better the effect of adding to the rubber products, the closer the tensile strength, elongation at break, and wear resistance of the vulcanized rubber. Vulcanized rubber without added rubber powder.
The surface of the vulcanized rubber powder is inert. Rubber product manufacturers can use a modifier such as silane coupling agent 2LLYY511 to modify the surface of the vulcanized rubber powder. The modified activated rubber powder has surface activity and better dispersion in rubber products. , The use effect is obviously improved. (Since today's "protagonist" is vulcanized rubber powder, I will not elaborate on the activated rubber powder)
3. The dosage of vulcanized rubber powder in rubber products
Different types of rubber products have different performance requirements, so the difference in the amount of vulcanized rubber powder is obvious. Generally, low-grade rubber products can directly use vulcanized rubber powder; the amount of vulcanized rubber powder in rubber soles and other products can reach 100 parts or more; high-grade rubber products often use a small amount of ultra-fine rubber powder, such as tire tread rubber Mixing about 10 parts of 100 mesh tire rubber powder can obviously improve the tire mileage.
In the actual production process, due to the different dispersion and effect of vulcanized rubber powder in different rubber materials, rubber product manufacturers need to select vulcanized rubber powder of appropriate varieties and appropriate indicators according to actual needs, and adjust the rubber product formula and production process reasonably , Under the premise of ensuring quality, reduce more production costs. Later editors will continue to share with you the application skills of vulcanized rubber powder.