A kind of rubber composition and vulcanized rubber and its preparation method and application
A rubber composition and polar rubber technology, applied in the rubber field, can solve the problems of insufficient mechanical properties, oil resistance and aging resistance, and achieve the effects of improving comprehensive performance, aging resistance and oil resistance.
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Embodiment H1
[0073] (1) Prepare a rubber composition, the ingredients and parts by weight of the rubber composition are as shown in Table 1.
[0074] (2) The gained rubber composition is carried out banburying, and this banburying comprises first section banburying and second section banburying, specifically comprises:
[0075] The first stage of internal mixing: set the initial temperature of the internal mixer at 60±3°C, close the discharge port, fix the rotor, and raise the top bolt. Carry out the first batch of feeding according to the ingredients shown in Table 1: first add half of the polar rubber, then add the polar enhancer and coupling agent, and finally add the other half of the polar rubber; knead at 148°C for 5 minutes . Then raise the upper jacking bolt, add the second batch of materials according to the composition shown in Table 1, clean the top of the internal mixer inlet and the upper jacking bolt, and put down the upper jacking bolt; the control temperature is not higher...
Embodiment H2-H6
[0082] (1) Prepare a rubber composition, the ingredients and parts by weight of the rubber composition are as shown in Table 1.
[0083] (2) carry out banburying according to the method shown in embodiment H1. Wherein, according to a specific embodiment, in the mixed rubber material stage of the second stage banburying, when the temperature of the rubber material reaches 110° C. or reaches 5 minutes, the obtained mixed rubber can be unloaded if one of the conditions is met first.
[0084] The obtained mixed rubbers are respectively denoted as H2-H6.
Embodiment H7
[0086] (1) Prepare the same rubber composition as in Example H1.
[0087] (2) Banburying is carried out with reference to the step (2) of Example H1, the difference is that in the first section of banburying, the materials are not divided into two batches, but the materials of the first section of banburying are added at the same time.
[0088] The resulting compound was designated as H7.
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