CN103724891A - Fluororubber composition with high tearing property for turbocharging pipe - Google Patents
Fluororubber composition with high tearing property for turbocharging pipe Download PDFInfo
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- CN103724891A CN103724891A CN201310756096.XA CN201310756096A CN103724891A CN 103724891 A CN103724891 A CN 103724891A CN 201310756096 A CN201310756096 A CN 201310756096A CN 103724891 A CN103724891 A CN 103724891A
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- fluororubber
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- fluororubber composition
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Abstract
The invention relates to a fluororubber composition with a high tearing property for a turbocharging pipe. The fluororubber composition comprises fluororubber, magnesium oxide, calcium hydroxide, middle-particle heat-cracking-method carbon black N990, modified precipitation-method white carbon black 233, fluororubber powder, 2,5-dimethyl-2,5-di(tertiary butyl peroxide)hexane and triallyl isocyanurate (TAIC); the fluororubber composition provided by the invention can meet the requirement of the high tearing property of the fluororubber; the tearing strength is more than 5N/mm; the bonding strength of the fluororubber is 2.3N/mm; the 150 DEG C*72h compression set is 49.5%; the 180 DEG C*72h compression set is 56.3%; the 200 DEG C*70h hot air aging elongation change rate is -13.2%; the engine oil aging resisting 150 DEG C*94h change rate is -13.5%; the ozone resistance is 50pphm*40 DEG C*72h*20% and no cracks are formed.
Description
Technical field
The present invention relates to rubber technology field, particularly a kind of heat-resisting high-tear strength fluoro-rubber composite.
Background technology
Turbo-supercharger flexible pipe is that in motor car engine, requirement is the harshest, one of flexible pipe that cost is the highest, the long-term threat causing due to rise in a short time of fuel price and limited global petroleum supplly, automobile industry is in order to address these problems, the vehicle of application turbocharging technology is more and more, simultaneously, day by day harsh to the requirement of the viton for turbo-supercharger flexible pipe, particularly sebific duct by for high temperature with need contact with the engine oil that elastomeric material is had more to corrosive nature, so the excellent viton of the high temperature resistant medium-resistance of usining is as turbine pressurized hose internal layer rubber, coordinate resistant to elevated temperatures silicon rubber as skin, adopt FKM/VMQ/M aramid fiber/VMQ multilayered structure, to replace the turbine pressurized hose of AEM or VMQ material, meet the requirements at the higher level of turbocharging technology to sebific duct, with the requirement of internal layer viton was compared in the past, in order to meet temperature resistant grade and the better pulse performance of requirements at the higher level, require viton to there is higher tear strength >=5N/mm.
Viton refers to a kind of synthetic macromolecular elastomer that contains fluorine atom on the carbon atom of main chain or side chain.The characteristic that this rubber has is high temperature resistant, oil resistant and the medicine of resistance to number of chemical corrode, aspect heat-proof aging, match in excellence or beauty with silicon rubber, being better than other rubber, is top science technology and the indispensable materials of other industrial aspect such as modern Aviation, guided missile, rocket, space travel.
Summary of the invention
Object of the present invention is mainly a kind of viton that meets turbo-supercharger flexible pipe internal layer high-tear strength performance of exploitation.The performance that simultaneously guarantees other does not obviously change or changes and occurs in allowed band, guarantees that sizing material has the performance of excellent heat-resisting, oil resistant, resistance to solvent and resistance to fuel.
Technical scheme of the present invention is as follows:
The fluoro-rubber composite of tear-resistant performance excellence, component and mass fraction are as follows:
Viton is selected G type viton.G type viton is at 26 type copolymers, introduces and can provide the fluorochemical monomer of active cross-linking set on a small quantity, or adopt allusion quotation to move polymerization technique on its main chain, carries out copolymerization form with the monomer that vulcanizes point containing iodine.G type viton can vulcanize with peroxide vulcanizing system, than viton such as 26 types, has better thermotolerance, compression set, water tolerance, water-fast steam, solvent resistance, fuel resistance and chemical proofing, and cold tolerance is excellent.The preferred G type of the present invention viton.
Reinforcing and filling system preferably, conventional is middle medium thermal carbon blacks (MT), spray carbon black, white filler.Use isotropic reinforcing filler, as carbon black, white carbon black etc., can obtain higher tear strength, but with the filler of anisotropic, as potter's clay, zinc oxide etc. can not get higher tear strength.The modification of white filler, can improve consistency and the dispersing property of same rubber, favourable to improving tear strength.With the precipitated silica that organosilane is processed, can make sizing material there is good tear resistance; Viton rubber powder can improve tear strength, adds the recovery rubber powder of a certain amount of identical base-material in rubber unvulcanizate, can effectively improve the trousers type tear strength of sizing material.The present invention is preferably middle medium thermal carbon blacks (MT) and modification white filler carries out and uses, adds simultaneously a certain amount of viton rubber powder as the reinforcing and filling system of viton formula.
Vulcanization system preferably, being mainly combined with of the vulcanization system of viton: four kinds of organic peroxide sulfuration system, diamines and derivative vulcanization system thereof, dihydric phenol and accelerator combination vulcanization system, organo-peroxide and TAIC vulcanization systems.Organic peroxide sulfuration system generally be take dibenzoyl peroxide (vulcanizing agent BP is vulcanizing agent), and vulcanization rate and state of vulcanization are lower, and compression set is large, and thermotolerance is bad, processing performance is bad; Diamines and derivative vulcanization system thereof, its vulcanized rubber thermotolerance and compression set are slightly good, but acid resistance is bad; Dihydric phenol and accelerator combination vulcanization system, processing performance is good, and compression set is little, is applicable to Viton E type rubber; Organo-peroxide and TAIC vulcanization system, the resistance to coke burning performance of its vulcanized rubber is fabulous, and compression set is at high temperature also fine, has good high temperature steam performance; The organo-peroxide of the preferred Good Heat-resistance of the present invention and TAIC vulcanization system.
By improving processing performance, further improve the tear resistance of viton:
The selection of processing parameter:
Viton can produce a large amount of heat in mixing process, in order to prevent that when excessive temperature (90 ℃), roll banding or incipient scorch, must, by water coolant, be about to roller temperature control at 40-50 ℃.For vulcanization reaction is occurred, 180 ℃ of * 15min of one step cure condition; Post vulcanization is generally ℃-150 ℃-250 ℃, room temperature-100, and every period of heating-up time is 1h, while reaching 250 ℃, then constant temperature 1h.
Concrete technology is controlled:
Mixing: viton intensity is high, rheological property declines, mixing difficulty, and the course of processing easily produces bubble, and bubble can destroy the continuity of cross-linked rubber, makes degradation and unstable.Through repeatedly practising, by improving calendering process, avoided to greatest extent the inner bubble that produces, guarantee the stability of physical and mechanical properties.Specific practice: roll spacing is controlled at below 2mm, thin-pass more than 10 times, guarantees that the amount of roll gap spacer gel is appropriate.
Sulfuration: avoid sizing material incipient scorch in advance under, extend curing time, reduce one step cure temperature, improve transformation efficiency, thereby improve the physical and mechanical properties of vulcanized article.Post vulcanization adopts segmentation temperature-rising method gradually, within the 1st hour, is warming up to 100 ℃, within second hour, is warming up to 150 ℃, within the 3rd hour, is warming up to 200 hours, within the 4th hour, is warming up to 250 hours, and constant temperature 1 hour.
Embodiment
Heat-resisting high-tear strength fluoro-rubber composite of the present invention is described as follows table, and the proportioning of the component of formula is mass fraction, lists file names with their corresponding performance perameter.
In mass fraction:
By the summary to above-mentioned test, turbocharger tube high tear energy fluoro-rubber composite of the present invention can meet the requirement to viton high-tear strength, tear strength meets > 5N/mm, and pass through formulation optimization, realize internal layer viton and outer silicon rubber bonds well, met 2.3N/mm with viton cohesive strength; 150 ℃ of * 72h compression set 49.5%; 180 ℃ of * 72h compression set 56.3%; 200 ℃ of * 70h hot air aging elongation change-13.2%; Aging 150 ℃ of * 94h velocity of variation-13.5% of resistance to engine oil; Ozone resistance 50pphm * 40 ℃ * 72h * 20% is without be full of cracks.
The present invention proposes turbocharger tube high tear energy fluoro-rubber composite, by have been described in detail above, person skilled obviously can be within not departing from content of the present invention, spirit and scope to formula as herein described and preparation method changes or suitably change realize the technology of the present invention with combination.Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the artly, they are deemed to be included in spirit of the present invention, scope and content.
Claims (2)
1. the effective high tear energy of a turbo-charging fluoro-rubber composite, is characterized in that, component and mass fraction are as follows:
2. composition as claimed in claim 1, is characterized in that described viton is G type viton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756096.XA CN103724891A (en) | 2013-12-31 | 2013-12-31 | Fluororubber composition with high tearing property for turbocharging pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756096.XA CN103724891A (en) | 2013-12-31 | 2013-12-31 | Fluororubber composition with high tearing property for turbocharging pipe |
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| CN103724891A true CN103724891A (en) | 2014-04-16 |
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| CN201310756096.XA Pending CN103724891A (en) | 2013-12-31 | 2013-12-31 | Fluororubber composition with high tearing property for turbocharging pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788864A (en) * | 2015-04-17 | 2015-07-22 | 柳州市乾阳机电设备有限公司 | Preparation method of high-temperature-resistant rubber hose |
| CN105440518A (en) * | 2015-12-31 | 2016-03-30 | 山东华夏神舟新材料有限公司 | Fluorine rubber composition with high-temperature tearing resistance and preparation method of fluorine rubber composition |
| CN108504004A (en) * | 2018-05-07 | 2018-09-07 | 安徽普瑞普勒传热技术有限公司 | A kind of heat resistant and wear resistant fluorine rubber seal element and preparation method thereof |
| CN115895146A (en) * | 2022-12-19 | 2023-04-04 | 四川道弘新材料有限公司 | Low-temperature-resistant modified binary fluororubber gross rubber and preparation method and application thereof |
Citations (4)
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| CN101033319A (en) * | 2006-03-08 | 2007-09-12 | 上海橡胶制品研究所 | Methanol gasoline resistant extrudable fluoroelastomer glue stock |
| JP2010013595A (en) * | 2008-07-07 | 2010-01-21 | Daikin Ind Ltd | Fluororubber composition excellent in vulcanization adhesion and molded article thereof |
| CN102276945A (en) * | 2011-07-11 | 2011-12-14 | 天津鹏翎胶管股份有限公司 | Methanol gasoline resistant fluorous rubber composition |
| CN102287161A (en) * | 2011-07-25 | 2011-12-21 | 上海道氟化工科技有限公司 | Compression packer rubber cylinder, and preparation method and application thereof |
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2013
- 2013-12-31 CN CN201310756096.XA patent/CN103724891A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033319A (en) * | 2006-03-08 | 2007-09-12 | 上海橡胶制品研究所 | Methanol gasoline resistant extrudable fluoroelastomer glue stock |
| JP2010013595A (en) * | 2008-07-07 | 2010-01-21 | Daikin Ind Ltd | Fluororubber composition excellent in vulcanization adhesion and molded article thereof |
| CN102276945A (en) * | 2011-07-11 | 2011-12-14 | 天津鹏翎胶管股份有限公司 | Methanol gasoline resistant fluorous rubber composition |
| CN102287161A (en) * | 2011-07-25 | 2011-12-21 | 上海道氟化工科技有限公司 | Compression packer rubber cylinder, and preparation method and application thereof |
Non-Patent Citations (1)
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| 约翰S.迪克: "《提高橡胶胶料性能实用方案1500例》", 31 March 2013, article "提高抗撕裂性能", pages: 52-53 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788864A (en) * | 2015-04-17 | 2015-07-22 | 柳州市乾阳机电设备有限公司 | Preparation method of high-temperature-resistant rubber hose |
| CN105440518A (en) * | 2015-12-31 | 2016-03-30 | 山东华夏神舟新材料有限公司 | Fluorine rubber composition with high-temperature tearing resistance and preparation method of fluorine rubber composition |
| CN108504004A (en) * | 2018-05-07 | 2018-09-07 | 安徽普瑞普勒传热技术有限公司 | A kind of heat resistant and wear resistant fluorine rubber seal element and preparation method thereof |
| CN115895146A (en) * | 2022-12-19 | 2023-04-04 | 四川道弘新材料有限公司 | Low-temperature-resistant modified binary fluororubber gross rubber and preparation method and application thereof |
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Application publication date: 20140416 |