Nitrile renewable plastic instead of nitrile rubber production of various kinds of oil-resistant rubber products can not only ensure the quality of oil-resistant rubber products, but also significantly reduce the cost of raw materials, so more and more sealed products manufacturers have begun to use in the production of oil seals Nitrile reclaimed rubber.Nitrile reclaimed rubber production Oil-resistant sealing ring, the curing temperature setting its performance (including the sealing ring and oil resistance) have a great impact.
In theory, nitrile rubber reclaimed rubber production rubber vulcanization temperature should be between 130-140 ℃, the vulcanization temperature directly affects the ring vulcanization speed, product quality and manufacturers economic benefits. Improve the nitrile rubber reclaimed rubber sealing ring production temperature can increase the vulcanization speed, and then increase production efficiency, but too high vulcanization temperature will affect the performance of nitrile reclaimed rubber seals:
1, the vulcanization temperature is too high will cause nitrile rubber reclaimed rubber internal molecular chain breakage and sulfide antigens, resulting in rubber mechanical properties decreased, affecting the sealing performance of the seal ring;
2, nitrile rubber reclaimed rubber ring production process in the production of vulcanized temperature is set too high will reduce the strength of nitrile reclaimed rubber seal, thus affecting the service life of nitrile seals;
3, the curing temperature is too high will lead to nitrile rubber regeneration material scorch time is shortened, reducing the filling time, resulting in the lack of local sealing rubber products, the surface appears pitting and other phenomena, the impact of nitrile rubber sealing ring appearance;
4, the curing temperature is too high will increase the temperature difference between the inside and outside of the nitrile reclaimed rubber seal, resulting in uneven vulcanization of rubber compounds, local over-sulfur and other issues.
Therefore, in order to improve the production efficiency and improve the nitrile rubber reclaimed rubber ring temperature when the temperature adjustment range should not be too large, with the regeneration of the nitrile rubber theory 130-140 ℃ vulcanization temperature difference between about 3-5 ℃. The performance and life of nitrile reclaimed rubber seals In addition to the vulcanization temperature, as well as nitrile reclaimed rubber products, seal product formulation design, curing time and other processes, later we will continue to explore with you renewable rubber seals in the production Other questions.
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