Tire R-rubber Encyclopedia

How to choose fillers for natural rubber/styrene-butadiene rubber/recycled rubber and rubber compoun

Create Date:2019-09-17 08:36:21Click volume:227
How to choose fillers for natural rubber/styrene-butadiene rubber/recycled rubber and rubber compoun

In order to improve the comprehensive performance and reduce the production cost, many rubber products manufacturers often use natural rubber with high mechanical strength and good elasticity, and styrene-butadiene rubber with excellent wear resistance, heat resistance and aging resistance, and low-cost reclaimed rubber. Cost-effective rubber products, in which the rubber filler is used as the most suitable compounding agent, and plays an important role in the natural rubber/styrene-butadiene rubber/recycled rubber and rubber. What is the specific performance? How to choose the right rubber filler 1JLYY917 for natural rubber / styrene-butadiene rubber / reclaimed rubber products?

1. Natural rubber / styrene-butadiene rubber / reclaimed rubber and commonly used fillers in rubber

1 Light calcium carbonate: white powder, non-toxic, odorless, non-irritating odor, can be filled in a large amount in the production of rubber products, reduce the amount of high-priced rubber by increasing the volume of the product, to achieve the purpose of reducing costs; / styrene-butadiene rubber / reclaimed rubber and rubber compound, calcium carbonate can further improve the tensile strength, tear strength and wear resistance of the rubber compound, and has a certain reinforcing effect.

2 Modified calcium carbonate: active calcium carbonate, Bai Yanhua, calcium carbonate or light calcium surface activated by calcium carbonate, the surface activity is higher than ordinary calcium carbonate, the hydrophobicity, dispersibility and reinforcement in rubber it is good. When using natural rubber, styrene-butadiene rubber and reclaimed rubber to produce rubber products with rubber, rubber products manufacturers can use lignin-modified calcium carbonate to further improve the comprehensive index of rubber products while reducing the production cost of rubber products.

3 Hard clay: clay is a typical silicate filler. The main component is hydrous sodium silicate. It has the dual functions of reinforcing and filling in natural rubber and synthetic rubber. It can be roughly divided into soft and hard products. . The rational use of hard clay in natural rubber/styrene-butadiene rubber/recycled rubber and rubber can improve and use the rubber processing technology to improve the viscosity and stiffness of the rubber compound, reduce the shrinkage, and further improve the smoothness of the surface of the extruded rubber compound.

2. Natural rubber / styrene-butadiene rubber / reclaimed rubber and the effect of different fillers in the rubber

When using natural rubber/styrene-butadiene rubber/recycled rubber to produce rubber products, sulfur is generally used as a vulcanizing agent, and an appropriate amount of accelerator DM, accelerator D, zinc oxide and stearic acid are used together, among which rubber products have hardness and tensile strength. The indexes such as compression performance, flex resistance and wear resistance can be adjusted by adjusting the type and amount of the filler.

In natural rubber / styrene-butadiene rubber / reclaimed rubber and rubber compound, rubber products manufacturers want to prepare high-strength and high-hardness rubber products, and can use modified calcium carbonate together with hard clay; if you want to improve the compression deformation of rubber compound Sex, you can choose ultra-fine Bai Yanhua and use hard clay; improve the natural rubber / styrene-butadiene rubber / reclaimed rubber and use the elongation of the rubber elongation, rubber products manufacturers can increase the amount of natural rubber while using lignin modified clay; For rubber products that are not particularly high in mechanical strength and wear resistance, a large amount of ordinary calcium carbonate can be filled.

Recycled rubber can reduce the production cost of rubber products. In natural rubber/styrene-butadiene rubber and rubber compound, tire reclaimed rubber is generally used. The proper amount of rubber filler can further reduce production cost, improve rubber compound process performance and improve rubber product comprehensive index. .