Prestressed jack seal ring rubber compound and preparation method thereof

Abstract

The invention discloses a prestressed jack seal ring rubber compound, which is prepared by mixing a part of rubber compound A and a part of rubber compound B in equal proportion, wherein the two parts of ingredients consist of the following materials in parts by weight: the compound A comprises 95-105 parts of polyurethane rubber, 7-9 parts of silicon rubbeer, 4-6 parts of fluororubber, 3-4 partsof ethylene propylene rubber, 0.7-0.9 parts of natural rubber, 0.3-0.5 parts of sulfur, 0.4-0.6 parts of zinc oxide, 0.3-0.5 parts of stearic acid, 1-2 parts of anti-aging agent 4010NA, 3-4 parts of paraffin, 62-65 parts of highly abrasion resistant carbon black N330, 18-22 parts of diisooctyl phthalate, 25-35 parts of magnesium hydroxide and 1-2 parts of promoter PZ; and the compound B comprises82-87 parts of epichlorohydrin rubber mono-homopolymer, 12-18 parts of epichlorohydrin rubber copolymer, 1-2 parts of zinc stearate, 1-3 parts of anti-aging agent RD, 0.4-0.6 parts of gum-easy T-78, 1-2 parts of antilux, 45-55 parts of carbon black, 10-14 parts of barium sulfate, 5-8 parts of diisooctyl phthalate, 4-6 parts of talcum powder, 0.4-0.6 parts of sulfur, 1.5-2.0 parts of vulcanizing agent DCP and 1-2 parts of promoter Na-22. A seal ring produced from the rubber material provided by the invention has the advantages of good oil resistance, heat resistance, air-tightness, flame retardance, tear resistance and low material cost.

Description

technical field [0001] The invention relates to the field of rubber compound processing, in particular to a prestressed jack sealing ring rubber compound and a preparation method thereof. Background technique [0002] The sealing ring is a vulnerable part of the prestressed jack, and the sealing ring is made of rubber. Therefore, there are special requirements for the formula of the rubber material, and the products are required to have high oil resistance and heat resistance, and at the same time have high air tightness. The usual 41# nitrile rubber formula is inferior to hydrogenated nitrile rubber and chlorohydrin rubber in terms of oil resistance, heat resistance and air tightness, but hydrogenated nitrile rubber and chlorohydrin rubber are expensive and costly; The research and practice of improving heat and airtight performance and saving material cost are of great practical significance. Contents of the invention [0003] The invention provides a prestressed jack ...

AI Technical Summary

Problems solved by technology

The usual 41# nitrile rubber formula is inferior to hydrogenated nitrile rubber and chlorohydrin rubber in terms of oil resistance, heat resistance and air tightness, but hydrogenated nitrile rubber and chlorohydrin rubber are expensive and costly; The research and practice of improving thermal and airtight performance and saving material cost are of great practical significance

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