High-temperature-resistant rubber sealing element
A technology of rubber seals and fluorine rubber, which is applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of poor temperature resistance, achieve good high temperature resistance and mechanical stability, and promote the use value
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[0018] Example 1
[0019] A high-temperature-resistant rubber seal, composed of the following parts by weight:
[0020] 60 parts of nitrile rubber, 40 parts of fluorine rubber, 55 parts of modified ceramic powder, 8 parts of manganese powder, 6 parts of glass fiber, 2 parts of dispersant, 1 part of antioxidant, 4 parts of vulcanizing agent.
[0021] Further, the preparation method of the modified ceramic powder includes the following steps:
[0022] (1) Put the ceramic powder into a 6% nitric acid solution and soak for 30 minutes, take it out and rinse it with clean water for use;
[0023] (2) Put the ceramic micropowder treated in step (1) into the modification solution and soak for 1 hour, during which time it is heated to maintain the temperature of the modification solution at 80℃, and ultrasonic waves with a frequency of 70kHz are applied for treatment. After rinsing with clean water, put it in a drying box and dry to a constant weight; the components in the modified solution and ...
Example Embodiment
[0027] Example 2
[0028] A high-temperature-resistant rubber seal, composed of the following parts by weight:
[0029] 63 parts of nitrile rubber, 42 parts of fluorine rubber, 58 parts of modified ceramic powder, 10 parts of manganese powder, 8 parts of glass fiber, 3 parts of dispersant, 1.5 parts of antioxidant, 5 parts of vulcanizing agent.
[0030] Further, the preparation method of the modified ceramic powder includes the following steps:
[0031] (1) Put the ceramic powder into a nitric acid solution with a mass fraction of 8% for 33 minutes, take it out and rinse it with clean water for use;
[0032] (2) Put the ceramic powder treated in step (1) into the modification solution and soak for 1.5 hours, during which time it is heated to keep the temperature of the modification solution at 83°C, and ultrasonic waves with a frequency of 72kHz are applied for treatment, and then taken out after completion After rinsing it with clean water, put it in a drying box and dry to a constant...
Example Embodiment
[0036] Example 3
[0037] A high-temperature-resistant rubber seal, composed of the following parts by weight:
[0038] 65 parts of nitrile rubber, 45 parts of fluorine rubber, 60 parts of modified ceramic powder, 12 parts of manganese powder, 9 parts of glass fiber, 4 parts of dispersant, 2 parts of antioxidant, 6 parts of vulcanizing agent.
[0039] Further, the preparation method of the modified ceramic powder includes the following steps:
[0040] (1) Put the ceramic micropowder into a 9% nitric acid solution and soak for 35 minutes, take it out and rinse it with clean water for use;
[0041] (2) Put the ceramic powder treated in step (1) into the modification solution and soak for 2 hours, during which time it is heated to maintain the temperature of the modification solution at 85°C, and ultrasonic waves with a frequency of 75kHz are applied for treatment. After rinsing with clean water, put it in a drying box and dry to constant weight; the components in the modified solution an...
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