Seal ring rubber material and mixing method thereof
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A technology of rubber materials and sealing rings, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of slow vulcanization speed of fluororubber rubber, large amount of product wear, and large compression permanent deformation, so as to reduce mold Effects of fouling, high production efficiency, and fast vulcanization speed
Inactive Publication Date: 2011-04-13
广东天诚密封件股份有限公司
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Problems solved by technology
The traditional fluororubber vulcanization system has always used 3# vulcanizing agent, but the corresponding fluororubber rubber has slow vulcanization speed, poor process performance, easy sticking to the roll, serious mold pollution, large compression permanent deformation, low production efficiency, and high scrap rate. The product has a large amount of wear and tear
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Embodiment 1
[0027] Embodiment 1, a kind of sealing ring rubber material, it contains the raw material of following weight ratio:
[0028] Fluorine rubber: 100 parts; active magnesium oxide: 5 parts, calcium hydroxide: 6 parts; Rhine powder-42: 1 part; Molijie TM-80: 1.5 parts; reinforcing agent: 35 parts, the reinforcing agent is carbon One or two of black N990, barium sulfate or calcined kaolin, at the same time, aramid pulp fiber accounts for 10~20% of the total weight of the reinforcing agent; bisphenol AF: 1.5 parts, accelerator BPP: 0.5 parts .
Embodiment 2
[0029] Embodiment 2, a kind of mixing method of sealing ring rubber material, comprising:
[0030] 1) Adjust the roller distance to 4~8mm, the roller temperature to 40~45°C, the raw rubber is pressed and wrapped, the raw rubber is 100 parts of fluororubber, the processing aid is 1 part of Rhine powder-42 and the release agent is 1.5 Fenmo Lijie TM-80;
[0031] 2) After kneading for about 1 min at a roller temperature of 40~45°C, add an acid absorbing agent to make 5 parts of activated magnesium oxide;
[0032] 3) After mixing evenly, add 35 parts of reinforcing agent, the reinforcing agent is one or two of carbon black N990, barium sulfate or calcined kaolin, at the same time, add aramid pulp fiber as reinforcing agent 10~20% of the total weight;
[0033] 4) After mixing evenly again, add vulcanizing agent 1.5 parts of bisphenol AF and 0.5 parts of accelerator BPP;
[0034] 5), finally add 6 parts of calcium hydroxide;
[0035] 6) When the temperature of the roll is below ...
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Abstract
The invention relates to a seal ring rubber material and a mixing method thereof. The mixing method comprises the following steps: carrying out crude rubber laminating and roller covering: adding 1-1.5 parts of aflux-42 serving as a processing agent and 1.5-2 parts of TM-80 serving as a mould release agent into 100 parts of fluororubber serving as crude rubber; mixing the above components of the rubber material for about 1 minute at the roller temperature of 40-45 DEG C, and adding 4-6 parts of activated magnesia serving as an acceptor; evenly mixing, adding 30-40 parts of a reinforcing agent which contains aramid pulp fiber; evenly mixing once again, adding 1-1.5 parts of bisphenol AF serving as a vulcanizing agent and 1-0.5 part of tert-butyl peroxypivalate (BPP) serving as an accelerator; and finally adding 5-7 parts of calcium hydroxide, packaging into a cornucopla for three or four times after all compounding ingredients are consumed up under the roller temperature of below 55 DEG C, adjusting the roller distance to be less than 0.55mm, rolling the dropped rubber for five or six times, and discharging. The seal ring rubber material has the advantages of rapid vulcanization speed of fluororubber, high production efficiency and low rejection rate.
Description
technical field [0001] The invention relates to a sealing ring rubber material and a mixing method thereof. Background technique [0002] With the development of the automobile industry and highways, the speed of automobiles has increased significantly, so the quality requirements for rubber seals matched with automobiles have also increased accordingly. The NBR skeleton oil seals used in the past have been eliminated in the fields of engine crankshaft oil seals, gearbox oil seals and chassis wheel hub oil seals, and acrylic rubber is not favored due to its low strength and elasticity, oil resistance and temperature resistance than fluororubber, so it is made of fluororubber Oil seals are an important means for current seal companies to develop and occupy the market. The traditional fluororubber vulcanization system has always used 3# vulcanizing agent, but the corresponding fluororubber rubber has slow vulcanization speed, poor process performance, easy sticking to the rol...
Claims
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Application Information
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