Fluororubber composition and preparation method and application thereof
A technology of fluororubber and composition, which is applied in the field of fluororubber composition and its preparation, can solve the problems of large surface friction resistance, wear of dynamic sealing materials, shortening the service life of fluororubber dynamic seals, etc., and achieve long service life and wear resistance small effect
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Embodiment 1
[0059] A kind of fluororubber composition, each component and its corresponding weight are as shown in Table 1, and obtain through following steps preparation:
[0060] S1: Add 100kg of fluororubber into the internal mixer, adjust the temperature of the internal mixer to 65°C, and knead for 3 minutes at a speed of 20r / min.
[0061] S2: Add 2.4kg of cross-linking agent and 15kg of fluororesin to the internal mixer in turn, adjust the temperature of the internal mixer to 90°C, and mix the cross-linking agent, fluororesin and fluororubber for 10 minutes at a speed of 30r / min , to obtain the mixed rubber.
[0062] S3: Put the mixed rubber into the open mill, adjust the temperature of the open mill to 70°C, add 0.8kg of vulcanizing agent under the condition of the rotating speed of 30r / min, and after mixing for 8 minutes, pull the thin pass 5 times, that is have to.
[0063] Among them, fluorine rubber is P757;
[0064] The crosslinking agent is TAIC-100;
[0065] Fluorine resi...
Embodiment 2-5
[0068] A fluororubber composition, the difference from Example 1 is that each component and its corresponding weight are shown in Table 1.
[0069] Each component and its weight (kg) in table 1 embodiment 1-5
[0070]
[0071] The fluororubber compositions prepared in Examples 1-5 were tested for the coefficient of static friction, the coefficient of dynamic friction and whether there is a phenomenon of stagnation, and the test results are shown in Table 2.
[0072] The detection result of table 2 embodiment 1-5
[0073]
[0074] From the analysis of the performance testing data in Table 2, it can be seen that the fluororubber compositions prepared in Examples 1-5 of the present application have a dynamic friction coefficient of 0.45-0.50 and a static friction coefficient of 0.48-0.59, and no stagnation occurs. This shows that the fluororubber composition prepared by the present application has a lower coefficient of dynamic friction and a lower coefficient of static fr...
Embodiment 6
[0099] A fluororubber composition, each component and its corresponding weight are shown in Table 5, and are prepared through the following steps:
[0100] S1: Add 100kg of fluororubber into the internal mixer, adjust the temperature of the internal mixer to 65°C, and knead for 3 minutes at a speed of 20r / min.
[0101] S2: Add 10kg of white carbon black, 2.4kg of cross-linking agent, and 15kg of fluororesin to the internal mixer in sequence, adjust the temperature of the internal mixer to 90°C, and put the white carbon black, cross-linking agent 1. The fluororesin and fluororubber were mixed for 10 minutes to obtain the mixed rubber.
[0102] S3: Put the mixed rubber into the open mill, adjust the temperature of the open mill to 70°C, add 0.8kg of vulcanizing agent under the condition of the rotating speed of 30r / min, and after mixing for 8 minutes, pull the thin pass 5 times, that is have to.
[0103] Among them, the fluorine rubber is G902;
[0104] White carbon black is ...
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