A kind of preparation method of the nitrile rubber that is used to prepare high wear-resisting floating oil seal sealing ring
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A technology of nitrile rubber and floating oil seal, which is applied in the field of nitrile rubber preparation, and can solve the problems that the product cannot meet the requirements of O-ring seals, etc.
Active Publication Date: 2016-09-28
ZHEJIANG GUANGLI ENG MACHINERY
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[0005] It can be seen from the above table that the tested sample has broken before reaching 300% fixed elongation, and the product cannot meet the requirements of the O-ring.
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[0020] Example A kind of preparation method that is used to prepare the nitrile rubber of high wear-resisting floating oil seal sealing ring, comprises formula and preparation process, and described formula comprises following components:
[0021] Rubber raw material: 18 parts of nitrile rubber;
[0022] Filler: 5 parts of N-550 carbon black, 2 parts of high wear-resistant carbon black, 9 parts of semi-reinforcing carbon black, 1 part of calcium carbonate;
[0023] Softener: 0.4 parts of polyvinyl chloride, 0.3 parts of stearic acid, 8 parts of dibutyl ester;
[0024] Acidifying agent: 0.1 part of sulfur, 0.4 part of accelerator DM, 0.3 part of accelerator TE, 0.12 part of accelerator TMTD;
[0025] Anti-aging agent: 0.3 parts of anti-aging agent RD, 0.2 parts of anti-aging agent 4010;
[0026] Activator: 1 part of zinc oxide, the above components are all in parts by weight;
[0027] The preparation process includes the following steps: Step 1. Adjust the temperature of th...
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Abstract
The preparation method of the nitrile rubber used to prepare the high wear-resistant floating oil seal sealing ring, including formula and preparation process, the formula includes the following components: nitrile rubber, N-550 carbon black, high wear-resistant carbon black, semi-reinforced carbon Black, calcium carbonate, polyvinyl chloride, stearic acid, dibutyl ester, sulfur, accelerator, accelerator TE, accelerator TMTD, antioxidant RD, antioxidant 4010, zinc oxide; preparation process: adjust the temperature of the internal mixer to 100°C, speed 32 rpm, put rubber raw materials, fillers, softeners, acidifiers, anti-aging agents and active agents into the internal mixer and mix for 20 minutes, control the glue temperature below 130°C to discharge the glue, then move to Open the mixer, discharge the sheet to cool down, and obtain the masterbatch; put the masterbatch into the internal mixer, add a vulcanizing agent to mix, banbury, control the temperature of the glue below 100°C, discharge the glue to the open mixer, and then discharge the sheet Cooling, standing and aging to obtain the nitrile rubber used to prepare high wear-resistant floating oil seal rings.
Description
technical field [0001] The invention relates to a preparation method of nitrile rubber, in particular to a preparation method of nitrile rubber used for preparing high wear-resistant floating oil seal rings. Background technique [0002] The sealing principle of the floating oil seal is: the two floating rings are deformed by the axial compression of the O-ring to generate a pressing force on the end face of the floating ring seal. With the uniform wear of the sealing end face, the elastic energy stored by the O-ring is gradually released, thus playing the role of axial compensation. Therefore, in actual work, the O-ring is required to have strong tensile properties, impact toughness and wear resistance. [0003] The test data of the floating oil seal sealing ring in the prior art is as follows (wherein the test conditions are tensile speed: 500mm / min, LL0: 25mm): [0004] [0005] It can be seen from the above table that the tested sample has broken before reaching 300...
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