Seal ring for special fluororubber motor for nuclear power and preparation method of seal ring

Abstract

The invention discloses a seal ring for a special fluororubber motor for nuclear power and a preparation method of the seal ring. The seal ring for the special fluororubber motor for the nuclear power is prepared from the following raw materials in parts by weight: 85 to 90 parts of fluororubber, 5 to 8 parts of acid-acceptor, 2 to 5 parts of compound vulcanizing agent, 8 to 10 parts of reinforcing agent and 1 to 2 parts of additive. The fluororubber motor seal ring is high in mechanical strength, excellent in oil resistance under high temperature, and suitable for a motor of a nuclear-powered ship.

Description

technical field [0001] The invention relates to the technical field of sealing rings for motors, in particular to a special fluorine rubber motor sealing ring for nuclear power and a preparation method thereof. Background technique [0002] The special fluorine rubber motor sealing ring for nuclear power is equipped on the new nuclear power ship motor in China at the request of customers. The motor requires a comprehensive seal against dust, water, grease, and nuclear radiation under ultra-static and dynamic conditions. Therefore, high requirements are put forward for the special fluorine rubber motor sealing ring for nuclear power. In addition to dust resistance, water resistance, grease resistance and nuclear radiation resistance, it also needs to have good weather resistance and high and low temperature resistance. The quality stability of the sealing ring in storage and use is directly related to the safety of the ship in motion. For harsh sea conditions, the quality o...

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Problems solved by technology

[0003] Chinese patent application number 201510607707.3 discloses a sealing ring used in motors, which is characterized in that it is made of the following raw materials in parts by weight: 50-60 parts of ethylene-propylene rubber, 30-40 parts of neoprene rubber, and 2-4 parts of active agent , 14-18 parts of copper powder, 21-24 parts of calcium carbonate, 2-4 parts of silicone, 1-3 parts of peanut oil, 3-5 parts of anti-aging agent, 1-3 parts of accelerator, 2-4 parts of turpentine, 5- 7 parts of lignin, 2-4 parts of lubricant, 11-15 parts of polyethylene glycol, 2-7 parts of diatomaceous earth, 1-2 parts of olive oil, the sealing ring made by this invention has good cold resistance, And temperature difference tolerance, it is not easy to crack and not brittle under the condition of temperature fluctuation, but the motor sealing ring also needs to ensure the intentional high temperature resistance performance, the high temperature resistance performance of this application is relatively weak

The invention adds a carboxyl silicone oil and active aminosilane, and at the same time cooperates with a multifunctional additive LCA, so that the low-temperature brittleness temperature has a better float, but the inorganic filler in the raw material is too much, which affects the mechanical properties of the product.

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