In a broad sense, carbon black can improve the processing performance of the rubber compound in the butyl inner tube, and improve the comprehensive index of the butyl inner tube product, especially the mechanical properties. Butyl reclaimed rubber is a rubber compound processed from waste butyl inner tube. It can reduce the cost and ensure the gas permeability of inner tube products in the production of butyl inner tube. However, the mechanical strength of butyl reclaimed rubber and the original rubber have certain The gap, therefore, the reinforcing effect of carbon black in the butyl inner tube formulation containing butyl reclaimed rubber is even more important. So which kind of carbon black should I use in butyl inner tube production?
1. Semi-reinforcing furnace black: Semi-reinforcing furnace black is a kind of carbon black commonly used in special rubber products. It can improve the elongation and elasticity of rubber in butyl inner rubber compound, reduce heat generation and improve the aging resistance of rubber compound. Performance, so adding a certain proportion of semi-reinforcing furnace black in the butyl inner tube can significantly improve the overall performance of the butyl inner tube.
2. Quickly press out the carbon black: the fast-extracting carbon black has excellent processing performance and medium reinforcing performance, which can significantly improve the extrusion performance of the rubber compound. The use of an appropriate amount of fast-pressing carbon black in the butyl inner tube produced by butyl rubber/recycled rubber can improve the stiffness, wear resistance, high temperature resistance and thermal conductivity of the butyl inner tube, and can also improve the inner tube to some extent. Its elasticity and resilience are ideal reinforcing agents in the production of butyl inner tubes.
When a butyl inner tube is produced using butyl rubber or butyl reclaimed rubber, the semi-reinforcing furnace black is usually used together with the carbon black.
3. Carbon black N660: Carbon black N660 has high tensile stress of high setting furnace black, extrusion performance of fast extrusion carbon black, resilience of semi-reinforcing carbon black and flexural flexibility of fine particle carbon black. The effect in the butyl inner tube is the sum of the above four carbon blacks. N660 itself has fine particles and high degree of structure. It is easy to disperse in butyl rubber. It can improve the tensile strength, tensile strength and tensile stress of butyl vulcanizate, reduce heat generation, and improve the elasticity and resistance of butyl inner tube. Flexibility, which improves the comprehensive index of butyl inner tube and prolongs the service life of inner tube products.
The strength between the butyl rubber itself and the reinforcing agent is weak. In order to enhance the reinforcing effect of the carbon black in the butyl inner tube, the heat treatment may be carried out in advance, or the additive having special properties may be used to strengthen the carbon black in the butyl rubber. The reinforcing effect in the material improves the tensile strength, the tensile strength, the hand elasticity, and the abrasion resistance of the butyl inner tube. As a substitute raw material for butyl rubber, butyl reclaimed rubber can not only reduce the cost in the production of butyl inner tube, but also improve the vulcanization and fluidity of butyl rubber. Rubber products manufacturers can choose the right kind of carbon black to eliminate butyl regeneration. The effect of the glue on the mechanical strength of the butyl inner tube increases the amount of butyl reclaimed rubber.