High-oil-resistant ethylene-propylene-diene monomer rubber sealing gasket and preparing method thereof
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A technology of EPDM rubber and gaskets, which is applied in the field of rubber gaskets, can solve problems such as poor oil resistance, short service life, and failure to meet market demand, and achieve improved mechanical properties, wear resistance, and airtight performance Good results
Inactive Publication Date: 2016-07-27
ANHUI JINGYI GLASS MACHINERY
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With the rapid development of science and technology and industry, the performance requirements of EPDM sealing materials are getting higher and higher. The existing EPDM sealing gaskets on the market have the disadvantage of poor oil resistance, which leads to their short service life. , unable to meet market demand
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[0015] A high oil-resistant EPDM rubber gasket, made of the following raw materials by weight (kg): EPDM rubber 57, polysulfide rubber 43, chlorosulfonated polyethylene rubber 26, crosslinking agent SQS3506, alginate 9. Basic magnesium sulfate whisker 20, naphthenic oil 9, tetraethylthiuram disulfide 2.5, 2-mercaptobenzimidazole 1.5, bromomethyl p-tert-octylphenol formaldehyde resin 6, N,N'- Bisfurylidene acetone 5, zinc carbonate 3, dibutyl diglyceride adipate 12, steel slag fine powder 18, 2,5-di-tert-butyl hydroquinone 2.5, modifier 19;
[0016] The preparation method of described modifying agent is as follows: (1) get the raw material of following weight (kg): blast furnace water-quenched slag 16, titanium carbide 14, aluminum-magnesium spinel 12, silicon boride 11, cocoyl methyl boron Sodium Sulfonate 2.5, Lauryl Phosphate Betaine 2, Glucosaminoglycan 1.5, Tallow Amine Polyoxyethylene Ether 5, Jojoba Acid Polyoxypropylene Ester 4, Sorbitol Polyoxyethylene Ether Tetraoleat...
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Abstract
The invention discloses a high-oil-resistant ethylene-propylene-diene monomer rubber sealing gasket and a preparing method thereof.The high-oil-resistant ethylene-propylene-diene monomer rubber sealing gasket is prepared from, by weight, 51-63 parts of ethylene-propylene-diene monomer rubber, 38-52 parts of polysulfide rubber, 22-34 parts of chlorosulfonated polyethylene rubber, 5-7 parts of cross-linking agent SQS350, 8-10 parts of sodium alginate, 17-24 parts of basic magnesium sulfate whiskers, 6-12 parts of naphthenic oil, 2-3 parts of tetraethylthiuram disulfide, 1-2 parts of 2-mercaptobenzimidazole, 4-8 parts of brooethyl p-tert-octyl phenolformaldehyde resin, 3-7 parts of N,N'-bis(furfurylidene)acetone, 2-5 parts of zinc carbonate, 10-15 parts of bisadipate, 16-22 parts of steel slag micro powder, 2-3 parts of 2,5-ditert-butylhydroquinone and 17-21 parts of modifying agent.The high-oil-resistant ethylene-propylene-diene monomer rubber sealing gasket has the advantages of being excellent in oil resistance, good in airtight performance, resistant to high temperature, resistant to corrosion and the like, the detect that the requirement for the oil resistance of an existing ethylene-propylene-diene monomer rubber sealing gasket can not be met is overcome, and the requirement of a market can be met.
Description
technical field [0001] The invention relates to a rubber sealing gasket, in particular to a highly oil-resistant EPDM sealing gasket and a preparation method thereof. Background technique [0002] Ethylene-propylene-diene rubber (EPDM) is a general-purpose synthetic rubber with low unsaturation, which is polymerized with ethylene and propylene as the main raw materials and a small amount of non-conjugated dienes under the action of Zeigler-Netta catalyst. Due to its high chemical stability, good ozone resistance, weather resistance, oxidation resistance, corrosion resistance and excellent electrical insulation performance, it can be widely used in automotive gaskets and other fields. With the rapid development of science and technology and industry, the performance requirements of EPDM sealing materials are getting higher and higher. The existing EPDM sealing gaskets on the market have the disadvantage of poor oil resistance, which leads to their short service life. , unabl...
Claims
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