Production method of chemical pump damping sound absorption and noise reduction sealing rubber
A sealing rubber and production method technology, applied in the field of polymer materials, can solve the problems of pressure resistance, vibration reduction, weather resistance and corrosion resistance, difficult to achieve balance, porous can not guarantee sealing, complex preparation methods, etc., to achieve good hydrophobicity, Increase the relaxation absorption effect, improve the effect of acid and alkali corrosion resistance and wear resistance
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Embodiment 1
[0021] A method for producing chemical pump sound-absorbing and noise-reducing sealing rubber, comprising the following steps:
[0022](1) Preparation of chlorosulfonated butyl rubber: Dissolve pulverized butyl rubber in carbon tetrachloride at 75°C to form 100 parts of a 150 g / L solution, add 0.4 parts of ethanolamine and azobisisobutyronitrile to it 0.2 parts of initiator, blow chlorine gas and sulfur dioxide into the glue solution at 70°C with a volume ratio of 1:2 chlorosulfonating agent, the chlorine content is 1.0%, and when the sulfonation degree is 0.190meq / g, remove the acid gas and add diisopropylamine Neutralize to pH 7.4, add water to the quenched glue, the mixture of water and quenched glue is emulsified to form a slurry of neutralized sulfonated polymer, remove the solvent from the slurry, and separate it from the water (2) Adjust the temperature of the open mill to 85°C, adjust the roll distance to 0.65mm, and add 105 parts of chlorosulfonated butyl rubber to th...
Embodiment 2
[0024] (1) Preparation of chlorosulfonated butyl rubber: Dissolve pulverized butyl rubber in carbon tetrachloride at 65°C to form 100 parts of a 100g / L solution, add 0.2 parts of ethanolamine and azobisisobutyronitrile to it 0.1 part of initiator, blow chlorine gas and sulfur dioxide into the glue solution at 70°C with a volume ratio of 1:2 chlorosulfonating agent, the chlorine content is 1.0%, and when the sulfonation degree is 0.170meq / g, remove the acid gas and add diisopropylamine Neutralize to pH 7.2, add water to the quenched glue, the mixture of water and quenched glue is emulsified to form a slurry of neutralized sulfonated polymer, remove the solvent from the slurry, and separate it from the water (2) Adjust the temperature of the open mill to 80~85°C, adjust the roller distance to 0.6~0.65mm, add step (1) to obtain chlorosulfonated butyl rubber 100~105 parts, make the rubber cover the front roller, add the mixture of 1 part of stearic acid and 5 parts of sericite pow...
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