Oil-resistant rubber products refer to those rubber products that can resist the erosion of oil substances and keep their physical properties unchanged, such as oil-resistant gaskets, gaskets, sealing strips, casings, hoses, gaskets, rubber rollers, etc., which are generally processed with nitrile rubber as the main raw material. Nitrile reclaimed rubber is made of waste nitrile rubber and its products through crushing, desulfurization, refining and other processes, which retains the excellent oil resistance of nitrile rubber, and can be used in combination with nitrile rubber to produce various oil-resistant rubber products to reduce costs. So how much nitrile reclaimed rubber is appropriate to add to nitrile oil-resistant rubber products?
Nitrile reclaimed rubber has excellent oil resistance, wear resistance and aging resistance, and the physical properties of high-quality nitrile reclaimed rubber are close to those of new rubber, which can effectively reduce the cost of raw materials when used to replace part of nitrile rubber to produce oil-resistant rubber products. Under the premise that the amount of nitrile rubber added remains unchanged, with the increasing proportion of nitrile reclaimed rubber, the compression set, hardness and oil resistance of vulcanized rubber decrease, and the aging resistance is significantly improved.
The experiment shows that the physical properties of oil-resistant rubber products will not change greatly if about 10 parts of nitrile reclaimed rubber are mixed with about 10 parts of nitrile rubber. When the dosage of nitrile reclaimed rubber is increased to 20-30 parts, the permanent deformation, hardness and oil resistance of oil-resistant rubber products are slightly reduced, and the aging resistance is significantly improved. Appropriate adjustment of the formula can improve the physical and mechanical properties of nitrile rubber/nitrile reclaimed rubber and glue.
Oil-resistant rubber products have high requirements for tensile strength and hardness, and about 20-30 parts of nitrile reclaimed rubber can be mixed with 100 parts of nitrile rubber; Appropriately increasing the amount of reinforcing agent and reducing the amount of plasticizer can effectively improve the tensile strength and hardness of the combined rubber, so the dosage of nitrile reclaimed rubber can continue to increase. When using nitrile reclaimed rubber E4LYY411 produce oil-resistant rubber products with high requirements for permanent deformation, it is recommended to control the proportion of nitrile reclaimed rubber within 100 parts of raw rubber to be less than 30 parts. Oil-resistant rubber products can also completely use nitrile reclaimed rubber, which has better processing performance and aging resistance.
There are many types of oil-resistant rubber products produced with nitrile butadiene rubber as the main raw material, and the physical properties of different products are different, so the mixing ratio of nitrile reclaimed rubber is different, generally 100 parts of nitrile rubber are mixed with about 20-30 parts of nitrile reclaimed rubber, and the formula can be adjusted appropriately to maximize the advantages of nitrile reclaimed rubber and produce oil-resistant rubber products with better comprehensive performance. In practical application, the dosage of nitrile reclaimed rubber in oil-resistant rubber products should be subject to detailed experiments and tests according to specific product requirements and production conditions to determine the most appropriate addition ratio and achieve the best balance of cost-effectiveness and performance.
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