When it comes to the reinforcing agent in the production of recycled rubber products, the first thing we think of is carbon black and white carbon black! However, the reinforcing agent used in the production of rubber products using recycled rubber can be not only these two, but also a kind of reinforcing agent. Although the reinforcing effect is not as good as carbon black and white carbon black, it can be used in the rubber compound. Strong multi-function, especially when producing some reclaimed rubber products with special needs, that is, organic reinforcing agents; then what are the common organic reinforcing agents on the market, and what is the role in reclaimed rubber products?
1. The role of phenolic resin in reclaimed rubber products
Phenolic resin is what we often say bakelite, bakelite powder, colorless or brown solid, the biggest feature is the high temperature resistance. The phenolic resin commonly used in the rubber products industry is slightly different from the resin used in other occasions, mostly white, gray or brown powdery substances or blocky substances; the use of an appropriate amount of phenolic resin in the production of recycled rubber products can improve the vulcanization of reclaimed rubber. The hardness, tensile strength and wear resistance of the rubber can also improve the adhesion between the rubber and the metal when using recycled rubber to produce rubber products containing metal materials.
Phenolic resin can be used not only as a reinforcing agent but also as a plasticizer and dispersant in the production of reclaimed rubber products; it should be noted that the elongation at break of reclaimed rubber vulcanizates increases with the amount of phenolic resin. It is reduced, so the amount of phenolic resin in recycled rubber products should be reasonably controlled.
2. The role of petroleum resin in recycled rubber products
Most of the petroleum resins used in the rubber products industry are products obtained by condensation copolymerization of petroleum cracking products. They are brown flakes or blocks, and have remarkable water, weathering and chemical resistance properties. When using recycled rubber to produce rubber products, petroleum resin can increase the elongation at break of reclaimed rubber and reduce the Mooney viscosity of rubber. Among them, petroleum resin has little effect on the tensile strength of reclaimed rubber; petroleum resin also has the effect of reclaimed rubber. With the role of softeners, dispersants.
When using recycled rubber to produce rubber products, although the reinforcing effect of the organic reinforcing agent in the rubber compound is not enhanced by the reinforcing agent such as carbon black, it can better coordinate the rubber material index and the compounding agent under special circumstances. Relationship. In the production process of recycled rubber products, there are many rubber products manufacturers who choose high styrene resin to improve the hardness of rubber compound, and high styrene resin is also a typical organic reinforcing agent; then what organic products will be used in the production of recycled rubber products? What about solvents? Which indicators of recycled rubber products are more favorable？