Rubber used for building shock-isolation support and manufacture method thereof

Abstract

The invention relates to a manufacture method of rubber used for a building shock-isolation support, which is performed by carrying out internal mixing, open mixing, sheet adding and sheet vulcanizing processes on natural rubber (NR), butadiene rubber (BR), S, an accelerator DM (2,2'-dibenzothiazole disulfide), an accelerator CZ (N-cyclohexyl-2-benzothiazole sulfenamide), ZnO, a coupling agent Si-69, carbon black N774 and N330, stearic acid (StA), an aromatic oil, protective wax, coumarone, an antiageing agent 4010NA (N-isopropyl-N'-phenyl-p-phenylenediamine), an antiageing agent RD (poly(1,2-dihydro-2,2,4-trimethyl-quinoline)) and an antiageing agent AW (6-ethoxyl-2,2,4-trimethyl-1,2-dihydroquinoline). According to the manufacture method, the use of a semi-efficient vulcanization system can well balance the performance of the rubber support during the low-temperature long-time vulcanization process; the combined use of the accelerators DM and CZ can well balance the relationship between the vulcanization characteristics and physical properties; and the appropriate combined use of natural rubber and butadiene rubber can improve anti-reversion properties and heat aging performance of the rubber.

Description

Technical field: [0001] The invention belongs to the technical field of rubber, in particular to a rubber used for building shock-isolation bearings and a production method. Background technique: [0002] Since the "5.12" Wenchuan Earthquake, the anti-seismic and seismic isolation technology of buildings has been paid more and more attention by the government departments and the real estate industry. The use of natural rubber bearings for isolation and shock resistance is one of the most effective means. The natural rubber bearing is large in size, with a radius of about 400mm-1500mm and a thickness of about 200mm. It is a thick product, so it needs to be vulcanized for a long time. Due to the poor ability of natural rubber to resist vulcanization and reversion, it is easy to overvulcanize for a long time, resulting in the decline of various physical properties. Invention content: [0003] Aiming at the deficiencies of the existing rubber formulation technology, the purp...

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Problems solved by technology

[0003] Aiming at the deficiencies of the existing rubber formulation technology, the purpose of the present invention is to solve the overvulcanization phenomenon of rubber used in building supports, comprehensively consider the accelerator type, vulcanization system, anti-reversion additives, rubber and other conditions, and optimize the rubber formulation to achieve To solve the purpose of vulcanization reversion

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