Various compounding agents are used in rubber products to improve product performance and improve processing technology. How many resins are commonly used? Commonly used resins in rubber include phenolic resin, high styrene resin, petroleum resin, coumarone resin, etc. What are the advantages of these resins and what role can they play in rubber?
1. Features and applications of phenolic resin
Phenolic resin, also known as bakelite powder, is a colorless or brown transparent solid with the characteristics of high temperature resistance, acid resistance, and heat resistance.
Phenolic resin has the functions of reinforcing agent, plasticizer and dispersant in rubber/reclaimed rubber. In rubber products, it can improve the hardness, tensile strength, and abrasion resistance of the vulcanized rubber of the rubber, and it can also improve the adhesion between the rubber and the metal. The combined use of nitrile rubber/reclaimed rubber and phenolic resin can improve the mechanical properties, compression set, and aging resistance of the rubber compound.
2. Features and applications of high styrene resin
High styrene resin is an emulsion polymer of styrene and butadiene. It is also called high styrene rubber. It is a special type of styrene butadiene rubber. It has the characteristics of non-toxic, odorless, low impurity content and stable performance. It has the advantages of good elasticity, mechanical properties, impact resistance and thermoplasticity.
High styrene resin can be used as a reinforcing agent or modifier in rubber, which can improve the processing performance, improve the hardness and wear resistance of the rubber compound, and improve the tensile stress, strength, tear resistance, and flex resistance of the rubber. Sex and so on.
3. Characteristics and application of petroleum resin
Petroleum resin HY14S9J2L has the characteristics of good miscibility, water resistance, chemical resistance, etc., and has the characteristics of good viscosity adjustment and thermal stability, and is low in price.
Petroleum resin has good compatibility with rubber and has no major effect on rubber vulcanization. It can increase viscosity, strengthen and soften rubber. C5/C9 petroleum resins are commonly used. Petroleum resin in rubber can improve the processing performance, increase the elongation at break and tear strength of the rubber compound. Different petroleum resins and different dosages have different performances for vulcanizates.
C5 petroleum resin in butyl rubber/reclaimed rubber can improve the vulcanization performance of the rubber, extend the scorch time, improve the wettability and viscosity of the rubber, reduce the Mooney viscosity, and increase the hardness and tear of the rubber.
4. The characteristics and applications of coumarone resin
Coumarone resin is a light yellow to brown viscous liquid or solid, with good compatibility, water resistance, acid and alkali resistance, aging resistance, and heat resistance.
Coumarone resin plays the role of softening, strengthening, plasticizing, thickening, dispersing, etc. in the rubber, can improve the process performance of rubber extrusion, calendering, etc., can also make the rubber have good adhesion and improve the rubber The physical and mechanical properties and aging resistance of the material.
In actual production, the amount and type of resin have different effects on rubber. Choose the appropriate resin and blending amount according to the performance of the rubber product in order to ensure the performance of the product.