CN102924768A - High-strength rubber combination with low compression set - Google Patents
High-strength rubber combination with low compression set Download PDFInfo
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- CN102924768A CN102924768A CN2012104705445A CN201210470544A CN102924768A CN 102924768 A CN102924768 A CN 102924768A CN 2012104705445 A CN2012104705445 A CN 2012104705445A CN 201210470544 A CN201210470544 A CN 201210470544A CN 102924768 A CN102924768 A CN 102924768A
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- compression set
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Abstract
The invention discloses high-strength rubber combination with low compression set, which comprises the following materials in part by weight: 100 parts of rubber, 40 to 80 parts of black carbon, 2 to 5 parts of quinoline age resister, 1 to 3 parts of heterocycle age resister, 3 to 5 parts of dispersing agent, 1 to 3 parts of accelerating agent, and 2 to 5 parts of vulcanizing agent, wherein the weight of rubber is 30 to 70 percent of the total weight of the combination; and the vulcanizing agent adopts combination of sulfur, dicumyl peroxide and sulphocompound. The rubber combination has high strength and meanwhile has good compression set.
Description
Technical field
The invention belongs to rubber materials, relate to a kind of rubber combination, specifically, relate to the rubber combination of a kind of high strength, low compression set.
Background technology
The oil preventer is a kind of rubber seal goods that are used in petroleum machinery equipment, and this is a kind of oil-proofness rubber with regard to requiring selected main rubber, and paracril is a kind of oil-proofness rubber that we often select, its wear resistance is higher, thermotolerance is better, and bonding force is strong, but insufficient strength.Yet the environment for use of preventer rubber seal need be born larger pressure, and this just requires this type of rubber combination larger intensity to be arranged to bear ambient pressure.As the sealing member goods, also require this type of rubber combination that low compression set is arranged, to guarantee the sealing effectiveness of product.Because paracril belongs to a kind of non-self-complementary epistasis synthetic rubber, need to add strengthening agent, actual use value can be arranged, but will guarantee the high strength of rubber, need to add the carbon black of small particle size; But its result can cause the compression set of rubber larger, so that can not satisfy the seal request of product, reduces the use properties of product.Present stage, the domestic gate rubber core that god launches company and uses shows as sealing effectiveness relatively poor, and work-ing life is shorter, and quality is unstable, and quality product is relatively poor.And the gate rubber core of import, quality product is better, but price generally is higher than about 10 times of domestic gate rubber cores.Cause the second-rate reason of homemade goods: the sizing compound formula design is improper, and technological operation is improper, the raw material quality fluctuation, and production quality control is not strict, and storage requirement is relatively poor etc.
Therefore, need a kind of rubber combination take nitrile rubber as raw material of exploitation, its intensity is high, and has the characteristic of low compression set.
Summary of the invention
The rubber combination that the purpose of this invention is to provide a kind of high strength low compression set, this rubber combination intensity is high, and, can overcome the larger problem of tension set that causes because adding carbon black, satisfy the seal request of product.
In order to achieve the above object, the invention provides a kind of rubber combination of high strength low compression set, it comprises following component in weight part: 100 parts of rubber, carbon black (carbon black is as reinforcing filler) 40-80 part, quinoline type antioxidant 2-5 part, heterocyclic anti-aging agent 1-3 part, dispersion agent 3-5 part, promotor 1-3 part, vulcanizing agent 2-5 part; Wherein rubber accounts for composition 30-70%, in the gross weight of composition; Described vulcanizing agent is the combination of sulphur, dicumyl peroxide and sulfocompound.
Above-mentioned high strength, low compression set rubber combination, wherein, described composition comprises sulphur 0.3-0.8 part, dicumyl peroxide 1.5-3.0 part, sulfocompound 0.5-2.0 part.Further, wherein, sulfocompound uses as vulcanizing agent again both as promotor simultaneously.
Above-mentioned high strength, low compression set rubber combination, wherein, described rubber is paracril, the paracril of south, preferred Zhenjiang Supreme Being's chemical industry company limited.
Above-mentioned high strength, low compression set rubber combination, wherein, described quinoline type antioxidant is 2,2,4-trimethylammonium 1,2-dihyaroquinoline polymkeric substance, 2,2 of still Shun company limited production of preferred Shandong, 4-trimethylammonium 1,2-dihyaroquinoline polymkeric substance.
Above-mentioned high strength, low compression set rubber combination, wherein, described heterocyclic anti-aging agent is the 2-mercaptobenzimidazole polymkeric substance.
Above-mentioned high strength, low compression set rubber combination, wherein, described dispersion agent is polymer fatty acid.
Above-mentioned high strength, low compression set rubber combination, wherein, described sulfocompound is tetramethyl-thiuram disulfide.
Above-mentioned high strength, low compression set rubber combination, wherein, said composition also comprises following component in weight part:
Promoting agent: 3-6 part;
Stearic acid: 0.5-3 part.
Above-mentioned high strength, low compression set rubber combination, wherein, any one in described strengthening agent selection carbon black N330, spray carbon black and the precipitated silica or two or more mixtures.
Above-mentioned high strength, low compression set rubber combination, wherein, described promoting agent is top grade zinc oxide.
The dicumyl peroxide that the sulphur that Jing Hai chemical plant, the preferred Shanghai of described vulcanizing agent produces, Shanghai rubber ingredients factory produce and the combination of sulfocompound.The preferred Shandong of described sulfocompound is the TMTD(tetramethyl-thiuram disulfide of Shun's chemical industry company limited still).
The present invention has found that sulphur and superoxide (being dicumyl peroxide) are as vulcanizing agent, with promotor (be sulfocompound, it is also simultaneously as vulcanizing agent) and the vulcanization system of usefulness, can guarantee that the tensile strength of paracril is greater than 20MPa(GB/T528-2009), and compression set is less than 25%(GB/T7759-1996), when it has improved rubber and has had high strength, the compression set poor-performing, overcome in the routine techniques technical barrier that elasticity can reduce when rubbery intensity improved.
High strength provided by the invention, low compression set rubber combination, intensity is high, and compression set is little, can satisfy the sealing property requirement of rubber seal goods.
Embodiment
Below the specific embodiment of the present invention is further described.
Rubber described in following examples is selected the paracril of south, Zhenjiang Supreme Being's chemical industry company limited.Described carbon black selects Shanghai Cabot factory to produce.2,2 of still Shun company limited production of the preferred Shandong of described quinoline type antioxidant, 4-trimethylammonium 1,2-dihyaroquinoline polymkeric substance.The 2-mercaptobenzimidazole polymkeric substance that the preferred Huangyan of described heterocyclic anti-aging agent East Zhejiang province company limited produces.Described dispersion agent is selected active dispersion agent SH-52, preferably derives from Xi'an Organic Chemical Plant.The peroxide compound that the sulphur that Jing Hai chemical plant, the preferred Shanghai of described vulcanizing agent produces, Shanghai rubber ingredients factory produce and Shandong is the TMTD(tetramethyl-thiuram disulfide of Shun's chemical industry company limited still).
Embodiment 1
The rubber combination of a kind of high strength, low compression set, contain following component in weight part:
100 parts of south Supreme Being's paracrils;
35 parts of carbon blacks (N330);
15 parts of white carbon blacks (precipitator method);
20 parts of spray carbon blacks;
1 part of 2-mercaptobenzimidazole (antioxidant MB);
2,2,4-trimethylammonium-1,2 parts in 2-dichloride quinoline polymkeric substance (anti-aging agent RD);
5 parts of dispersion agents;
5 parts in zinc oxide;
1.0 parts of stearic acid;
0.5 part in sulphur;
1.5 parts of tetramethyl-thiuram disulfides (Vulcanization accelerator TMTD);
3 parts of dicumyl peroxides (vulcanizing agent DCP).
The preparation of above-mentioned composition can be adopted mill or mixer mixing, and its step is as follows:
Mill mixing: southern Supreme Being's paracril 1051 is plasticated, add promoting agent, stearic acid, anti-aging agent and active dispersion agent behind the 30s, the strengthening agent that adds half behind the 100s, add a remaining semi-reinforcing agent behind the 120s, add vulcanizing agent and promotor behind the 180s, sheet or shaping under the thin-pass behind the 180s, wherein mill temperature is 50～60 ℃.
Mixer mixing: drop into southern Supreme Being's paracril 1051, drop into simultaneously promoting agent, stearic acid, anti-aging agent and active dispersion agent behind the 10s, drop into strengthening agent behind the 40s, at least park after the cooling and add vulcanizing agent and promotor more than 12 hours, sheet or shaping under the thin-pass behind the 180s, wherein banburying chamber's temperature is 60～120 ℃.
The rubber combination tensile strength of the present embodiment is 18MPa above (GB/T528-2009) at least.Compression set (the A type of 100 ℃ of environment * 24h), (GB/T7759-1996) below at least 25%.
Embodiment 2
The rubber combination of a kind of high strength, low compression set, contain following component in weight part:
100 parts of south Supreme Being's paracrils;
15 parts of carbon blacks (N330);
35 parts of white carbon blacks (precipitator method);
30 parts of spray carbon blacks;
3 parts of 2-mercaptobenzimidazoles (antioxidant MB);
2,2,4-trimethylammonium-1,5 parts in 2-dichloride quinoline polymkeric substance (anti-aging agent RD);
5 parts of dispersion agents;
6 parts in zinc oxide;
3.0 parts of stearic acid;
0.8 part in sulphur;
1.0 parts of tetramethyl-thiuram disulfides (Vulcanization accelerator TMTD);
2.0 parts of dicumyl peroxides (vulcanizing agent DCP).
The preparation method of said composition is identical with the method for embodiment 1.
The rubber combination tensile strength of the present embodiment is 18.5MPa(GB/T528-2009 at least).Compression set (the A type of 100 ℃ of environment * 24h), (GB/T7759-1996) below at least 25%.
Embodiment 3
The rubber combination of a kind of high strength, low compression set, contain following component in weight part:
100 parts of south Supreme Being's paracrils;
30 parts of carbon blacks (N330);
20 parts of white carbon blacks (precipitator method);
10 parts of spray carbon blacks;
2 parts of 2-mercaptobenzimidazoles (antioxidant MB);
2,2,4-trimethylammonium-1,4 parts in 2-dichloride quinoline polymkeric substance (anti-aging agent RD);
4 parts of dispersion agents;
3 parts in zinc oxide;
0.5 part of stearic acid;
0.3 part in sulphur;
2.0 parts of tetramethyl-thiuram disulfides (Vulcanization accelerator TMTD);
1.5 parts of dicumyl peroxides (vulcanizing agent DCP).
The preparation method of said composition is identical with the method for embodiment 1.
The rubber combination tensile strength of the present embodiment is 20MPa(GB/T528-2009 at least).Compression set (the A type of 100 ℃ of environment * 24h), (GB/T7759-1996) below at least 25%.
Embodiment 4
The rubber combination of a kind of high strength, low compression set, contain following component in weight part:
100 parts of south Supreme Being's paracrils;
10 parts of carbon blacks (N330);
30 parts of white carbon blacks (precipitator method);
1 part of 2-mercaptobenzimidazole (antioxidant MB);
2,2,4-trimethylammonium-1,3 parts in 2-dichloride quinoline polymkeric substance (anti-aging agent RD);
3 parts of dispersion agents;
0.6 part in sulphur;
1.8 parts of tetramethyl-thiuram disulfides (Vulcanization accelerator TMTD);
2.5 parts of dicumyl peroxides (vulcanizing agent DCP).
Mill mixing: southern Supreme Being's paracril 1051 is plasticated, add anti-aging agent and active dispersion agent behind the 30s, the strengthening agent that adds half behind the 100s, add a remaining semi-reinforcing agent behind the 120s, add vulcanizing agent and promotor behind the 180s, sheet or shaping under the thin-pass behind the 180s, wherein mill temperature is 50～60 ℃.
Mixer mixing: drop into southern Supreme Being's paracril 1051, drop into simultaneously anti-aging agent and active dispersion agent behind the 10s, drop into strengthening agent behind the 40s, park at least adding vulcanizing agent and promotor more than 12 hours after the cooling, sheet or shaping under the thin-pass behind the 180s, wherein banburying chamber's temperature is 60～120 ℃.
The rubber combination tensile strength of the present embodiment is 18MPa above (GB/T528-2009) at least.Compression set (the A type of 100 ℃ of environment * 24h), (GB/T7759-1996) below at least 25%.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. the rubber combination of a high strength, low compression set is characterized in that, said composition comprises following component in weight part:
Rubber: 100 parts;
Carbon black: 40-80 part;
Quinoline type antioxidant: 2-5 part;
Heterocyclic anti-aging agent: 1-3 part;
Dispersion agent: 3-5 part;
Promotor: 1-3 part;
Vulcanizing agent: 2-5 part;
Wherein, rubber accounts for composition 30-70%, in the gross weight of composition;
Described vulcanizing agent is the combination of sulphur, dicumyl peroxide and sulfocompound.
2. high strength as claimed in claim 1, low compression set rubber combination is characterized in that, described composition comprises sulphur 0.3-0.8 part, dicumyl peroxide 1.5-3.0 part, sulfocompound 0.5-2.0 part.
3. high strength as claimed in claim 1, low compression set rubber combination is characterized in that, described rubber is paracril.
4. as claimed in claim 1 high strength, low compression set rubber combination is characterized in that, described quinoline type antioxidant is 2,2,4-trimethylammonium 1,2-dihyaroquinoline polymkeric substance.
5. as claimed in claim 1 high strength, low compression set rubber combination is characterized in that, described heterocyclic anti-aging agent is the 2-mercaptobenzimidazole polymkeric substance.
6. as claimed in claim 1 high strength, low compression set rubber combination is characterized in that, described dispersion agent is polymer fatty acid.
7. as claimed in claim 1 or 2 high strength, low compression set rubber combination is characterized in that, described sulfocompound is tetramethyl-thiuram disulfide.
8. high strength as claimed in claim 1, low compression set rubber combination is characterized in that, said composition also comprises following component in weight part:
Promoting agent: 3-6 part;
Stearic acid: 0.5-3 part.
9. high strength as claimed in claim 8, low compression set rubber combination is characterized in that, any one in described strengthening agent selection carbon black N330, spray carbon black and the precipitated silica or two or more mixtures.
10. high strength as claimed in claim 8, low compression set rubber combination is characterized in that, described promoting agent is top grade zinc oxide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104705445A CN102924768A (en) | 2012-11-20 | 2012-11-20 | High-strength rubber combination with low compression set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104705445A CN102924768A (en) | 2012-11-20 | 2012-11-20 | High-strength rubber combination with low compression set |
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| CN102924768A true CN102924768A (en) | 2013-02-13 |
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| CN2012104705445A Pending CN102924768A (en) | 2012-11-20 | 2012-11-20 | High-strength rubber combination with low compression set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105175821A (en) * | 2015-08-24 | 2015-12-23 | 天津中和胶业股份有限公司 | High-strength low-press-deformation oil-resistant valve sealing ring |
| CN106867054A (en) * | 2015-12-10 | 2017-06-20 | 北京橡胶工业研究设计院 | A kind of height for drilling well poppet stretches type functional material and preparation method thereof surely |
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| JP2001192503A (en) * | 2000-01-11 | 2001-07-17 | Bridgestone Corp | Pneumatic tire |
| CN101108903A (en) * | 2006-07-21 | 2008-01-23 | 广东工业大学 | Nitrile rubber sizing material using black pigment modifier |
| US20080139709A1 (en) * | 2006-12-06 | 2008-06-12 | The Goodyear Tire & Rubber Company | Elastomeric blend for vehicle timing belt |
| CN102167853A (en) * | 2011-02-18 | 2011-08-31 | 青岛开世密封工业有限公司 | Formula and preparation method of nitrile-butadiene rubber for speed-reducing clutch oil seal |
| CN102275712A (en) * | 2011-05-23 | 2011-12-14 | 兖矿集团有限公司 | High-temperature resistant conveyer belt |
| CN102382376A (en) * | 2011-09-06 | 2012-03-21 | 青岛开世密封工业有限公司 | Method for preparing colored ethylene-propylene rubber |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001192503A (en) * | 2000-01-11 | 2001-07-17 | Bridgestone Corp | Pneumatic tire |
| CN101108903A (en) * | 2006-07-21 | 2008-01-23 | 广东工业大学 | Nitrile rubber sizing material using black pigment modifier |
| US20080139709A1 (en) * | 2006-12-06 | 2008-06-12 | The Goodyear Tire & Rubber Company | Elastomeric blend for vehicle timing belt |
| CN102167853A (en) * | 2011-02-18 | 2011-08-31 | 青岛开世密封工业有限公司 | Formula and preparation method of nitrile-butadiene rubber for speed-reducing clutch oil seal |
| CN102275712A (en) * | 2011-05-23 | 2011-12-14 | 兖矿集团有限公司 | High-temperature resistant conveyer belt |
| CN102382376A (en) * | 2011-09-06 | 2012-03-21 | 青岛开世密封工业有限公司 | Method for preparing colored ethylene-propylene rubber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105175821A (en) * | 2015-08-24 | 2015-12-23 | 天津中和胶业股份有限公司 | High-strength low-press-deformation oil-resistant valve sealing ring |
| CN106867054A (en) * | 2015-12-10 | 2017-06-20 | 北京橡胶工业研究设计院 | A kind of height for drilling well poppet stretches type functional material and preparation method thereof surely |
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Application publication date: 20130213 |