Anti-knock rubber O-ring material and preparation method thereof

Abstract

The invention discloses an anti-knock rubber O-ring material and a preparation method thereof. The anti-knock rubber O-ring material is composed of the following raw materials in parts by mass: 100 parts of virgin rubber, 15-90 parts of reinforcing agent, 0.5-10 parts of acid acceptor, 0.5-4 parts of processing aid, 0.6-4 parts of vulcanizing agent and 1-6 parts of bridging aid. The preparation method comprises the following steps: adding the virgin rubber into an open mill or Banbury mixer, plasticizing, and adding the premixed reinforcing agent, acid acceptor and processing aid; after the powder is wetted, adding the vulcanizing agent and bridging aid, carrying out compounding and thin passing uniformly, discharging, and cooling to obtain the anti-knock rubber O-ring material. The anti-knock rubber O-ring material has the advantages of high hardness, high strength, high modulus, high tear resistance, excellent dispersity and the like. The O-ring prepared from the material has excellent anti-knock property, and can reach Grade 0000-1111 in NORSOK M-710 in an RGD test; and the compression deformation is small.

Description

technical field [0001] The invention relates to an anti-explosion rubber O-ring material and a preparation method thereof. Background technique [0002] The anti-explosion of the rubber O-ring refers to the anti-instantaneous explosive decompression (AED or RGD for short). Under the action of high pressure, after the rubber seal is in contact with the gas for a period of time, the gas will penetrate into its interior and form a certain tiny space. , the gas continues to infiltrate until the internal and external pressure reaches equilibrium, the higher the pressure, the more gas infiltrates. When the pressure outside the rubber seal drops, the compressed gas in the rubber body cannot be released quickly enough, which will cause the rubber body to crack and bubble, and eventually the seal will lose its sealing performance. Anti-knock O-rings are widely used in the exploitation and transportation of natural gas. At present, in the domestic market, the products of anti-knock O...

AI Technical Summary

Problems solved by technology

O-rings made of ordinary HNBR, FKM, and FEPM formulas often have poor antiknock performance, that is, when the pressure changes, the surface of the rubber O-ring is prone to blisters, cracks appear on the rubber section, and in severe cases, the product may break. The greater the pressure change, the more severe the situation will be, causing the product to lose its sealing properties

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