Rubber lining rubber material for corrosion resisting butterfly valve lined with rubber, and preparation method for rubber lining rubber material

Abstract

The invention discloses a rubber lining rubber material for a corrosion resisting butterfly valve lined with rubber. The rubber lining rubber material is formed by mixing a rubber material A and a rubber material B, wherein the rubber material A comprises the following raw materials in part by weight: 85 to 95 parts of nitrile rubber 3305, 0.3 to 0.5 part of sulphur, 4 to 6 parts of magnesium oxide, 3 to 4 parts of stearic acid, 1 to 2 parts of antioxygen 2,5-di-tert-butylhydroquinone (DTBHQ), 1 to 2 parts of antiager RD, 1 to 2 parts of antiager 4010NA, 3 to 4 parts of paraffin, 22 to 25 parts of fast extrusion carbon black, 62 to 65 parts of high wear resistant carbon black 330, 18 to 22 parts of dioctyl ester, 25 to 35 parts of calcium carbonate, 3 to 4 parts of accelerator, 1 to 2 parts of accelerator tetramethylthiuram disulphide (TMTD), and 1 to 2 parts of accelerator tetraethyl-thinram disulfide (TETD); and the rubber material B comprises the following raw materials in part by weight: 82 to 87 parts of homopolymerization epichloro-hydrin rubber, 12 to 18 parts of copolymerization epichloro-hydrin rubber, 1 to 2 parts of zinc stearate, 1 to 3 parts of antiager RD, 0.4 to 0.6part of rubber change element, 1 to 2 parts of rhine wax, 45 to 55 parts of fast extrusion carbon black, 10 to 14 parts of kieselguhr, 5 to 8 parts of dioctyl ester,4 to 6 parts of lead dioxide, 0.8 part of vulcanizer trithiocyanuric acid (TCY), and 1 to 2 parts of accelerator Na-22. The rubber lining rubber material has good comprehensive performance, and the butterfly valve which is obtained through vulcanization has the characteristics of high air tightness, weather fastness, chilling resistance, and oil resistance and the like; meanwhile, the material cost is low.

Description

technical field [0001] The invention relates to the field of processing rubber composite materials, in particular to a rubber-lined rubber material for a corrosion-resistant rubber-lined butterfly valve and a preparation method thereof. Background technique [0002] In the fluid pipeline system, the valve is the control element, its main function is to isolate the equipment and the pipeline system, adjust the flow, prevent backflow, adjust and discharge the pressure, so the requirements for the sealing and corrosion resistance of the valve are relatively high. The existing casting The high temperature resistance and corrosion resistance of butterfly valves are not very good. Then, rubber-lined butterfly valves are more and more widely used. The high temperature resistance and corrosion resistance of the rubber-lined rubber materials of existing rubber-lined butterfly valves are not very ideal. Although some have good corrosion resistance, the raw materials are expensive and ...

AI Technical Summary

Problems solved by technology

[0002] In the fluid pipeline system, the valve is the control element, its main function is to isolate the equipment and the pipeline system, adjust the flow, prevent backflow, adjust and discharge the pressure, so the requirements for the sealing and corrosion resistance of the valve are relatively high. The existing casting The high temperature resistance and corrosion resistance of butterfly valves are not very good. Then, rubber-lined butterfly valves are more and more widely used. The high temperature resistance and corrosion resistance of the rubber-lined rubber materials of existing rubber-lined butterfly valves are not very ideal. Although some have good corrosion resistance, the raw materials are expensive and the cost is high.

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