Nitrile reclaimed rubber can be used together with raw rubber or plastic in an appropriate ratio to prepare oil-resistant and wear-resistant products with better comprehensive performance. In actual production, taking appropriate measures can improve the mechanical strength and processing performance of nitrile reclaimed rubber, and further expand the application range of nitrile reclaimed rubber. Nitrile reclaimed rubber can be used in combination with oil-resistant rubber such as nitrile rubber and neoprene, as well as styrene butadiene rubber and chlorinated polyethylene. What problems should be paid attention to at this time?
3. Combined use of nitrile reclaimed rubber and styrene butadiene rubber
Styrene butadiene rubber is polystyrene butadiene copolymer. Its processing performance is close to that of natural rubber, and it has better wear resistance, heat resistance, aging resistance and vulcanization speed. When nitrile reclaimed rubber and styrene butadiene rubber are used together, with the continuous increase in the amount of nitrile reclaimed rubber 2YLYY511, the oil resistance of the combined rubber is significantly improved, and the elongation at break and tensile strength decrease to varying degrees. In actual production, choosing the nitrile reclaimed rubber that is closest to the physical properties of the product can effectively reduce the cost of raw materials while ensuring product quality.
It takes a long time for nitrile reclaimed rubber/styrene butadiene rubber to be blended on the open mill; it is easy to mix on the open mill after the blending is parked, and the surface of the product is smooth, stiff and elastic. Nitrile reclaimed rubber/styrene butadiene rubber is suitable for products that do not require high oil resistance. Reasonably control the ratio of the two together, and choose appropriate rubber additives, especially antioxidants and accelerators, to further improve the process performance of the rubber compound and the use of the finished product. performance.
4. Combined use of nitrile reclaimed rubber and chlorinated polyethylene
Chlorinated polyethylene is CPE material. It has excellent weather resistance, ozone resistance, chemical resistance, aging resistance, oil resistance and flame resistance, and is easily compatible with other polymer materials. When nitrile reclaimed rubber is used together with CPE, with the increase in the amount of nitrile reclaimed rubber, the hardness of the rubber-plastic blend material is basically unchanged, the strength, elongation, oil resistance, and aging resistance are reduced, and the deformation is reduced. After nitrile reclaimed rubber is blended with CPE, its aging resistance is significantly improved.
When nitrile reclaimed rubber is blended with CPE, the roller temperature should be controlled within the range where chlorinated polyethylene can form a film. Add stabilizer immediately, and then add processed nitrile reclaimed rubber. The mixing process is easy and the semi-finished product is heated. Good fluidity, good stiffness at room temperature, low extrusion expansion rate, suitable for preparing oil-resistant extrusion products. When blending nitrile reclaimed rubber with chlorinated polyethylene, it is necessary to select a co-vulcanization system according to the combined ratio. It is not suitable to use high-reinforcing materials. The hardness can be reduced by appropriately increasing the amount of plasticizer.
In actual production, the nitrile reclaimed rubber can also be blended with nitrile rubber and chlorinated polyethylene in a certain proportion at the same time, or the nitrile reclaimed rubber/chlorinated polyethylene/styrene butadiene rubber can be blended in a ternary manner. There is a chance The editor will continue to discuss with you.
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