CN103044830B - Sealing rubber for butterfly valve and preparation method thereof - Google Patents
Sealing rubber for butterfly valve and preparation method thereof Download PDFInfo
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- CN103044830B CN103044830B CN201210483583.9A CN201210483583A CN103044830B CN 103044830 B CN103044830 B CN 103044830B CN 201210483583 A CN201210483583 A CN 201210483583A CN 103044830 B CN103044830 B CN 103044830B
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Abstract
The invention discloses sealing rubber for a butterfly valve. The sealing rubber for the butterfly valve comprises the following raw materials in parts by weight: 60-70 parts of acrylic rubber, 20-25 parts of brominated butyl rubber 2222, 10-14 parts of chlorinated butyl rubber CBK139, 11-13 parts of chlorosulfonated polyethylene rubber, 8-11 parts of modified tree ash, 1-2 pars of ferrocene, 10-20 parts of carbon black N339, 20-25 parts of white carbon black by precipitation method, 5-10 parts of kaolin, 3-4 parts of zinc oxide, 5-7 parts of bauxite, 8-10 parts of modified iron tailings residue, 0.5-1 part of vulcanizing agent BP, 1-2 parts of accelerant TETD, 1-2 parts of 2-thiol benzimidazole, 1-2 parts of antiager M, 1-3 parts of isopropyl tri(dioctyl pyrophosphoric acyloxyl) titanate and 16-18 parts of DOTP dimethyl isophthalate. The rubber material provided by the invention has excellent ozone resistance, low temperature resistance, heat resistance, is large in using temperature range, better in process performance, lower in material and production costs, and good in mechanical properties and environment-friendly in process, and can be used to prepare various sealing gaskets.
Description
Technical field
The present invention relates to synthetic rubber field, be specifically related to a kind of car-valve gasket sizing material and preparation method thereof.
Background technology
The riding stability and riding comfort etc. of automobile rubber component to the vibrationproof of automobile, noise abatement, raising vehicle play great role.The conventional rubber material usage of automobile is larger, but along with engine be in recent years tending towards high-power, miniaturization development, the envrionment temperature of engine environment raises, gas exhaust inspecting laws and regulations requirement is stricter, in addition the use of alcohol fuel, forces rubber component to improve heat-resisting, cold-resistant, oil resistant, the properties such as ageing-resistant.So the elastomeric consumption of high-performance special constantly increases, automobile is the principal market of these special synthetic rubbers.Therefore, the glue kind of automobile rubber is by the special gelatin future development with premium properties.
Acrylic elastomer (hereinafter referred to as ACM) take acrylate as the elastomerics that main monomer obtains through copolymerization, and its main chain is saturated carbon chains, and side base is polar ester groups.Because its many excellence given by special construction, as heat-resisting, ageing-resistant, oil resistant, resistance to ozone, uvioresistant etc., mechanical property and processing characteristics are better than viton and silicon rubber, and it is heat-resisting, ageing resistance and oil-proofness are better than paracril.ACM is widely used in various high temperature, resistance to oil environment, become a kind of sealing material that automotive industry in recent years focuses on develop and spread, especially for the high temperature resistant oil sealing, bent axle, valve rod, head gasket, hydraulic oil pipeline etc. of automobile, current domestic needs is whole dependence on import almost.
Cause engine room temperature rise because car speed improves, the envrionment temperature of auto parts machinery will reach 150 DEG C even more than 180 DEG C usually, therefore how to obtain the focus that the ACM rubber that can use in higher temperature environment for a long time becomes industry concern.In order to give prominence to or improve the processing characteristics of ACM, in recent years modification carried out to ACM or select ACM to one of other elastomer-modified study hotspots becoming processed and applied.Existing rubber seal is under the operating modes such as high temperature, low temperature, the large temperature difference, corrosive medium and long lifetime, and its sealing property is difficult to satisfactory, works out the trend that high performance rubber unvulcanizate becomes current domestic rubber industry development.
Summary of the invention
The invention provides a kind of butterfly valve seal rubber and preparation method thereof, sizing material of the present invention has excellent high-low temperature resistant, oil resistant, solvent resistant and chemical resistance, simultaneously good mechanical property.
The present invention adopts following technical scheme:
A kind of butterfly valve seal rubber, be made up of following raw materials in part by weight: acrylic elastomer 60-70, brominated butyl rubber 2222 20-25, chlorinated butyl rubber CBK139 10-14, chlorosulfonated polyethylene rubber 11-13, modification tree ash 8-11, ferrocene 1-2, carbon black N339 10-20, precipitated silica 20-25, kaolin 5-10, zinc oxide 3-4, bauxitic clay 5-7, Modified Iron mine tailing ground-slag 8-10, vulcanizing agent BP0.5 ~ 1, acceterator TE TD 1-2, 2-thiol group benzimidazolyl 1-2, anti-aging agent M1-2, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 1-3, DOTP isophthalic acid ester 16-18.
Described a kind of butterfly valve seal rubber, it is characterized in that, be made up of following raw materials in part by weight: acrylic elastomer 65, brominated butyl rubber 2,222 23, chlorinated butyl rubber CBK139 12, chlorosulfonated polyethylene rubber 12, modification tree ash 10, ferrocene 1.5, carbon black N339 15, precipitated silica 22, kaolin 6, zinc oxide 3.5, bauxitic clay 6, Modified Iron mine tailing ground-slag 9, vulcanizing agent BP0.8, acceterator TE TD 1.5, 2-thiol group benzimidazolyl 1.5, anti-aging agent M1.5, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 1.5, DOTP isophthalic acid ester 18.
The preparation method of described a kind of butterfly valve seal rubber, is characterized in that, comprise the following steps:
(1) preparation method of modification tree ash:
The diatomite of tree ash weight 1-2% is joined in tree ash and mixes, with 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add the trisodium phosphate of aluminate coupling agent DL-411, the 1-2% being equivalent to solid weight 0.5-1.0%, 1-2% Tristearoylglycerol, 3-5% aluminum oxide, with the speed high-speed stirring of 1200-1500 rev/min, obtain dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification tree ash;
(2) preparation of Modified Iron mine tailing:
By scaling loss 4-6 hour at iron tailings 900-1000 DEG C, then nanometer powder is ground to form, admix the ptfe micropowder, the sodium lignosulfonate of 1-2%, the 1-2% Xylo-Mucine agitating that are equivalent to powder weight 1-2% more even, dry, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) by formula rate, Modified Iron mine tailing, carbon black N339, precipitated silica, kaolin, zinc oxide, bauxitic clay are dropped in high-speed mixer, with the speed high-speed stirring of 1000-1200 rev/min, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester is sprayed onto in mixed fillers simultaneously, continue to stir 5-6 minute, discharging cooling is for subsequent use, obtains mixture;
(4) by acrylic elastomer, brominated butyl rubber 2222, chlorinated butyl rubber CBK139, chlorosulfonated polyethylene rubber, modification tree ash, drop in Banbury mixer, plasticate at the temperature of 65-73 DEG C, after plasticating 10-14 minute, when temperature reaches 82-95 DEG C, start discharge, after discharge, park cooling 10-12 hour;
(5) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, add the compound of step (4) again, after mixing 2-3 minute, after adding the mixing 10-15 of other leftover materials minute in formula beyond sulphur removal agent and promotor class again, when temperature reaches 90-98 DEG C, start discharge, after discharge, park cooling 12-14 hour;
(6) above-mentioned mixing materials is dropped in mill, then vulcanizing agent, promotor class are added in rubber unvulcanizate, thin-pass 6-8 time, processing temperature≤58 DEG C of mill.
Beneficial effect
The present invention is by acrylic elastomer and other several compounding rubber, improve the over-all properties of rubber unvulcanizate, tree ash is improved, tail iron ore is carried out modification simultaneously, then mix with carbon black, use coupling agent treatment again, use as strengthening agent, improve the dispersiveness of filler at rubber unvulcanizate, improve ozone resistance and the resistance to low temperature of rubber unvulcanizate, resistance toheat, than acrylic elastomer itself and butadiene-acrylonitrile rubber, there is wider use temperature scope simultaneously, better processing performance, lower starting material and production cost, meet the performance requriements of production domesticization component.
Embodiment
A preparation for butterfly valve seal rubber,
Take acrylic elastomer (AR-100) 65kg, brominated butyl rubber 2222 23kg, chlorinated butyl rubber CBK139 12kg, chlorosulfonated polyethylene rubber (CSM2305) 12kg, modification tree ash 10kg, ferrocene 1.5kg, carbon black N339 15kg, precipitated silica 22kg, kaolin 6kg, zinc oxide 3.5kg, bauxitic clay 6kg, Modified Iron mine tailing ground-slag 9kg, vulcanizing agent BP0.8kg, acceterator TE TD 1.5kg, 2-thiol group benzimidazolyl 1.5kg, anti-aging agent M 1.5kg, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 1.5kg, DOTP isophthalic acid ester 18kg,
Preparation method comprises the following steps:
(1) preparation method of modification tree ash:
The diatomite of tree ash weight 1-2% is joined in tree ash and mixes, with 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add the trisodium phosphate of aluminate coupling agent DL-411, the 1-2% being equivalent to solid weight 0.5-1.0%, 1-2% Tristearoylglycerol, 3-5% aluminum oxide, with the speed high-speed stirring of 1200-1500 rev/min, obtain dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification tree ash;
(2) preparation of Modified Iron mine tailing ground-slag:
By scaling loss 4-6 hour at iron tailings 900-1000 DEG C, then grind to form nanometer powder, then it is even to admix the ptfe micropowder, the sodium lignosulfonate of 1-2%, the 1-2% Xylo-Mucine agitating that are equivalent to powder weight 1-2%, dries, grind to form nanometer powder, obtain Modified Iron mine tailing;
(3) by formula rate, Modified Iron mine tailing, carbon black N339, precipitated silica, kaolin, zinc oxide, bauxitic clay are dropped in high-speed mixer, with the speed high-speed stirring of 1000-1200 rev/min, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester is sprayed onto in mixed fillers simultaneously, continue to stir 5-6 minute, discharging cooling is for subsequent use, obtains mixture;
(4) by acrylic elastomer, brominated butyl rubber 2222, chlorinated butyl rubber CBK139, chlorosulfonated polyethylene rubber, modification tree ash, drop in Banbury mixer, plasticate at the temperature of 65-73 DEG C, after plasticating 10-14 minute, when temperature reaches 82-95 DEG C, start discharge, after discharge, park cooling 10-12 hour;
(5) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, add the compound of step (4) again, after mixing 2-3 minute, after adding the mixing 10-15 of other leftover materials minute in formula beyond sulphur removal agent and promotor class again, when temperature reaches 90-98 DEG C, start discharge, after discharge, park cooling 12-14 hour;
(6) above-mentioned mixing materials is dropped in mill, then vulcanizing agent, promotor are added in rubber unvulcanizate, thin-pass 6-8 time, processing temperature≤58 DEG C of mill.
Experimental data
Make sizing material by the formula for raw stock of embodiment to make a service test detection, detected result is in table 1.
Table 1
The lower temperature resistance of sizing material of the present invention, resistance toheat and resistance to tearing are all good than conventional gaskets material as can be seen from the table, can be used as various sealing member material.
Claims (3)
1. a butterfly valve seal rubber, it is characterized in that, be made up of following raw materials in part by weight: acrylic elastomer 60-70, brominated butyl rubber 2222 20-25, chlorinated butyl rubber CBK139 10-14, chlorosulfonated polyethylene rubber 11-13, modification tree ash 8-11, ferrocene 1-2, carbon black N339 10-20, precipitated silica 20-25, kaolin 5-10, zinc oxide 3-4, bauxitic clay 5-7, Modified Iron mine tailing ground-slag 8-10, vulcanizing agent BP0.5 ~ 1, acceterator TE TD 1-2, 2-thiol group benzimidazolyl 1-2, anti-aging agent M1-2, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 1-3, DOTP isophthalic acid ester 16-18.
2. a kind of butterfly valve seal rubber according to claim 1, it is characterized in that, be made up of following raw materials in part by weight: acrylic elastomer 65, brominated butyl rubber 2,222 23, chlorinated butyl rubber CBK139 12, chlorosulfonated polyethylene rubber 12, modification tree ash 10, ferrocene 1.5, carbon black N339 15, precipitated silica 22, kaolin 6, zinc oxide 3.5, bauxitic clay 6, Modified Iron mine tailing ground-slag 9, vulcanizing agent BP0.8, acceterator TE TD 1.5, 2-thiol group benzimidazolyl 1.5, anti-aging agent M1.5, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 1.5, DOTP isophthalic acid ester 18.
3. the preparation method of a kind of butterfly valve seal rubber according to claim 1 and 2, is characterized in that, comprise the following steps:
(1) preparation method of modification tree ash:
The diatomite of tree ash weight 1-2% is joined in tree ash and mixes, with 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add the trisodium phosphate of aluminate coupling agent DL-411, the 1-2% being equivalent to solid weight 0.5-1.0%, 1-2% Tristearoylglycerol, 3-5% aluminum oxide, with the speed high-speed stirring of 1200-1500 rev/min, obtain dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification tree ash;
(2) preparation of Modified Iron mine tailing ground-slag:
By scaling loss 4-6 hour at iron tailings 900-1000 DEG C, then nanometer powder is ground to form, admix the ptfe micropowder, the sodium lignosulfonate of 1-2%, the 1-2% Xylo-Mucine agitating that are equivalent to powder weight 1-2% more even, dry, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) by formula rate, Modified Iron mine tailing ground-slag, carbon black N339, precipitated silica, kaolin, zinc oxide, bauxitic clay are dropped in high-speed mixer, with the speed high-speed stirring of 1000-1200 rev/min, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester is sprayed onto in mixed fillers simultaneously, continue to stir 5-6 minute, discharging cooling is for subsequent use, obtains mixture;
(4) by acrylic elastomer, brominated butyl rubber 2222, chlorinated butyl rubber CBK139, chlorosulfonated polyethylene rubber, modification tree ash, drop in Banbury mixer, plasticate at the temperature of 65-73 DEG C, after plasticating 10-14 minute, when temperature reaches 82-95 DEG C, start discharge, after discharge, park cooling 10-12 hour;
(5) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, add the mixture of step (3) again, after mixing 2-3 minute, after adding the mixing 10-15 of other leftover materials minute in formula beyond sulphur removal agent and promotor class again, when temperature reaches 90-128 DEG C, start discharge, after discharge, park cooling 12-14 hour;
(6) above-mentioned mixing materials is dropped in mill, then vulcanizing agent, promotor class are added in rubber unvulcanizate, thin-pass 6-8 time, processing temperature≤58 DEG C of mill.
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| CN201210483583.9A CN103044830B (en) | 2012-11-25 | 2012-11-25 | Sealing rubber for butterfly valve and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103254849A (en) * | 2013-05-08 | 2013-08-21 | 安徽艳阳电气集团有限公司 | Brominated butyl rubber high temperature-resistant waterproof sealant and preparation method thereof |
| CN103254848B (en) * | 2013-05-08 | 2015-11-25 | 安徽艳阳电气集团有限公司 | butyl rubber fluorescent lamp waterproof glue and preparation method thereof |
| CN103694610A (en) * | 2013-11-29 | 2014-04-02 | 马鞍山市中澜橡塑制品有限公司 | Rubber sealing pad material with wear resistance and sealing performance and preparation method of material |
| CN109553817A (en) * | 2018-12-31 | 2019-04-02 | 安徽银龙泵阀股份有限公司 | A kind of gasket and preparation method thereof for pump valve |
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| WO2009099113A1 (en) * | 2008-02-05 | 2009-08-13 | Denki Kagaku Kogyo Kabushiki Kaisha | Acrylic rubber |
| CN101649099A (en) * | 2009-09-17 | 2010-02-17 | 上海众力汽车部件有限公司 | Durable high-temperature resisting acrylate rubber composition |
| CN102002202A (en) * | 2010-12-10 | 2011-04-06 | 天津鹏翎胶管股份有限公司 | Acrylic rubber composite |
| CN102731987A (en) * | 2012-05-30 | 2012-10-17 | 芜湖荣基密封系统有限公司 | Oil-resistant aging-resistant chlorhydrin rubber and polyacrylate rubber mixed rubber sealing ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101319082A (en) * | 2008-07-16 | 2008-12-10 | 青岛茂林橡胶制品有限公司 | Rubber framework grease seal for automobile gear box and manufacturing method thereof |
| CN101735540A (en) * | 2008-11-17 | 2010-06-16 | 周绪书 | Rubber dynamic sealing material |
| CN102417628A (en) * | 2011-10-31 | 2012-04-18 | 铜陵新特阀门有限责任公司 | O-shaped seal ring rubber sizing material of parallel gate valve end surfaces and preparation method thereof |
| CN102504480B (en) * | 2011-11-23 | 2013-07-31 | 常州乔尔塑料有限公司 | Low-humidity-dry-cracking-resistant amino molding plastic |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009099113A1 (en) * | 2008-02-05 | 2009-08-13 | Denki Kagaku Kogyo Kabushiki Kaisha | Acrylic rubber |
| CN101649099A (en) * | 2009-09-17 | 2010-02-17 | 上海众力汽车部件有限公司 | Durable high-temperature resisting acrylate rubber composition |
| CN102002202A (en) * | 2010-12-10 | 2011-04-06 | 天津鹏翎胶管股份有限公司 | Acrylic rubber composite |
| CN102731987A (en) * | 2012-05-30 | 2012-10-17 | 芜湖荣基密封系统有限公司 | Oil-resistant aging-resistant chlorhydrin rubber and polyacrylate rubber mixed rubber sealing ring |
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