CN100564472C - A kind of fluorine rubber seal element and preparation method thereof - Google Patents
A kind of fluorine rubber seal element and preparation method thereof Download PDFInfo
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- CN100564472C CN100564472C CNB2007100315815A CN200710031581A CN100564472C CN 100564472 C CN100564472 C CN 100564472C CN B2007100315815 A CNB2007100315815 A CN B2007100315815A CN 200710031581 A CN200710031581 A CN 200710031581A CN 100564472 C CN100564472 C CN 100564472C
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Abstract
The invention provides a kind of fluorine rubber seal element, it is characterized in that it is to be made by the raw material of following mass parts: 60～80 parts of binary viton, 20～40 parts of 4 third viton, 20～40 parts of carbon blacks, 3～5 parts in calcium hydroxide, 3～6 parts of metal oxides, 1.5～2 parts of hexafluoro isopropylidene diphenol, 0.3～0.5 part of BPP, 0.5～2 part of processing aid, 0.5～1.2 part of dicumyl peroxide, 0.5～1.2 part of triallyl isocyanurate.Its preparation method be with the raw material of above-mentioned mass parts add in the mixing facilities 60～80 ℃ mixing down evenly after, through extruding premolding, under 165～180 ℃ on vulcanizing press molded vulcanization 8～12 minutes, post cure was made after 8～24 hours in 200～250 ℃ of warm airs.Prepared fluorine rubber seal element long service life and can the high-temperature resistant water steam, anti-high-low pressure impacts.
Description
Technical field
The invention belongs to technical field of sealing technology, particularly a kind of fluorine rubber seal element and preparation method thereof.
Background technology
The sealing member that is applied to the engine generator set cylinder sleeve is made up of 5 road seal with O ring spares usually, and steam temperature is generally between 150 ℃～200 ℃.During diesel engine work, because the shockwave of combustion gases outburst, and the relative vibration between piston and cylinder sleeve, cylinder sleeve and the cylinder body, make local high pressure and the high vacuum of producing of the cooling water layer of being close to the outer wall of cylinder jachet face, more near the cylinder sleeve surface, coolant pressure changes more greatly, in cooling fluid since pressure reduce bubble and steam bubble formation are arranged phenomenon cavitation.When formed bubble and steam bubble are subjected to subsequently and during the high pressure that comes, because the inside and outside pressure difference of air pocket, bubble and steam bubble sneaked into again or to dissolve in the cooling fluid or condense into liquid, the volume of air pocket will sharply dwindle and crumble and fall.This process time is extremely short, has only several centiseconds usually, therefore produces huge impact power, and local temperature and pressure are sharply raise.If bubble or steam bubble are crumbled and fall near the cylinder sleeve wall, then the liquid particle is just as numerous little bullet, hits the cylinder body surface continuously and is assemblied in sealing member on the cylinder sleeve, makes it tired gradually and destroy.Sealing member is one of key part of engine works better, it should the high-temperature resistant water steam, the high-low pressure of anti-moment repeated stock again, must keep good elasticity and lower compression set performance simultaneously, guarantee that with this engine has the better seal effect in the work for a long time, satisfies the needs that equipment does not normally have the operation of leaking.
Conventional cylinder sleeve of engine sealing member is selected the binary form viton for use, the viton manufacturing of 4 third viton or peroxide cure type.The binary viton adopts the bis-phenol curing system, must the complexed metal oxide compound could be normally crosslinked, the use of metal oxide has reduced the water-fast steam performance of vulcanizable fluororubber glue; And the anti-long-term water vapour performance of bis-phenol cross-link bond that curing system forms is also relatively poor.Peroxide cure type viton has good water-fast steam performance, but because the more common binary viton of price of such viton is high 4～6 times, has limited its large-scale application.4 third viton are viton of a kind of desirable peroxide cure type, have good heat-resisting, water-fast steam performance and physical strength preferably, but mixing, the expressing technique poor performance of this rubber, resistance to low temperature is poor, shuts down to restart moment after for some time again and leak easily; In addition, the compression tension set performance of 4 third vulcanizable fluororubber glue is also relatively poor, the cylinder sleeve seal with O ring spare that very not suitable manufacturing compression deformation performance is had relatively high expectations.Use in reality is found; the sealing member of binary viton uses in this case; works better has only 2～4 months work-ing life; because generating set equipment is comparatively huge and complicated; repair and replacement expense once is big; stop time is long, has therefore limited the application of fluorine rubber seal element in the sector.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of fluorine rubber seal element is provided, this fluorine rubber seal element long service life, high-temperature resistant water steam, anti-high-low pressure impact.
Another object of the present invention is to provide a kind of preparation method of above-mentioned fluorine rubber seal element.
Purpose of the present invention is achieved through the following technical solutions: a kind of fluorine rubber seal element, it is characterized in that it is to be made by the raw material of following mass parts: 60～80 parts of binary viton, 20～40 parts of 4 third viton, 20～40 parts of carbon blacks, 3～5 parts in calcium hydroxide, 3～6 parts of metal oxides, 1.5～2 parts of hexafluoro isopropylidene diphenol, 0.3～0.5 part of BPP, 0.5～2 part of processing aid, 0.5～1.2 part of dicumyl peroxide, 0.5～1.2 part of triallyl isocyanurate.
Described binary viton is a biasfluoroethylene-hexafluoropropylene binary copolymerization viton, and 121 ℃ of following Mooney viscosity ML1+10 are 80～120MU.
Described carbon black is middle medium thermal carbon blacks.
Described metal oxide is a plumbous oxide.
Described processing aid is the mixture of sodium stearate and palm wax, takes into account the demolding performace in 4 third viton and the binary vulcanizable fluororubber process.
The preparation method of above-mentioned fluorine rubber seal element, it is characterized in that comprising the steps: with 60～80 parts of binary viton, 20～40 parts of 4 third viton, 20～40 parts of carbon blacks, 3～5 parts in calcium hydroxide, 3～6 parts of metal oxides, 1.5～2 parts of hexafluoro isopropylidene diphenol, 0.3～0.5 part of BPP, 0.5～2 part of processing aid, 0.5～1.2 part of dicumyl peroxide, 0.5～1.2 part of triallyl isocyanurate add in the mixing facilities 60～80 ℃ mixing down evenly after, through extruding premolding, under 165～180 ℃ on vulcanizing press molded vulcanization 8～12 minutes, post cure can make liner packing spare after 8～24 hours in 200 ℃～250 ℃ warm airs, and above-mentioned umber is mass parts.
Bis-phenol sulfurized binary viton has splendid compression tension set performance, but water-fast steam performance is not as good as 4 third viton of peroxide cure, and the poor processability of 4 third viton, permanent performance of compression and poor performance at low temperatures, so adopt the two also mode of usefulness, realize performance complement, both solved the processing performance problem of material, taken into account the water-fast steam of sealing member, the performance of compression tension set again.
Viton high-temperature resistant water steam performance depends on recipe ingredient to a great extent, and the influence of rubber is not in the highest flight.Metal oxide is very significant as sour accepting agent to water-fast steam Effect on Performance.Performance the best during the containing metal oxide compound not in prescription.But bis-phenol sulfurized binary viton must add metal oxide could be normally crosslinked as sour accepting agent, and when using metal oxide, water-fast steam the best of plumbous oxide is so the present invention selects for use the plumbous oxide of low consumption as sour accepting agent.
In order to improve anti-high-low pressure impact property, cross-linked rubber must have physical strength preferably, has therefore selected the binary viton of middle high Mooney viscosity for use, and 121 ℃ of following Mooney viscosity ML1+10 are 80～120MU.The molecular weight of this rubber is higher, and cross-linked rubber has higher draw tensile strength, and the Mooney viscosity of taking into account the binary viton simultaneously is close with 4 third viton, avoids the two viscosity too wide in the gap and to be not easy blend even.
Carbon black in the starting material has filling properties and processing characteristics preferably, has improved the hardness and the intensity of cross-linked rubber, has improved the ballistic ability of anti-high-low pressure, has prolonged the work-ing life of sealing member.
The present invention compared with prior art has following outstanding advantage and beneficial effect:
(1) fluorine rubber seal element long service life provided by the present invention and can the high-temperature resistant water steam, anti-high-low pressure impacts.
(2) fluorine rubber seal element provided by the present invention, can improve more than 16 months work-ing life on engine generator set cylinder sleeve of engine sealing member, maintenance dismounting back finds that sealing member still keeps state preferably, phenomenons such as distortion are softened, do not had to non-cracking, no bubbling, nothing, satisfies the requirement of cylinder sleeve of engine sealing fully.
(3) rubber unvulcanizate of the present invention mixing, extrude premolding, the molded vulcanization processing performance is good, defectives such as vulcanized article is difficult for choking with resentment, current mark, torn edges, yield rate height.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, but the working of an invention mode is not limited thereto.
Embodiment 1
With binary viton FE2603 (three Ai Fu companies, 121 ℃ of following Mooney viscosity ML1+10 are 80MU) 80 parts, 20 parts of 4 third viton FE2701 (three Ai Fu companies), 30 parts of middle medium thermal carbon blacks, 4 parts in calcium hydroxide, 4 parts in plumbous oxide, 2 parts of hexafluoro isopropylidene diphenol, 0.5 part of BPP, 0.2 part of sodium stearate, 0.4 part of palm wax, 0.5 part of dicumyl peroxide, 0.5 part of triallyl isocyanurate add in the mill 60 ℃ mixing down evenly after, through extruding premolding, under 177 ℃ on vulcanizing press molded vulcanization 10min, in 200 ℃ of warm airs, can make liner packing spare behind the post cure 24h, above-mentioned umber is mass parts.
Embodiment 2
With binary viton ML26-14 (Mei Lan company, 121 ℃ of following Mooney viscosity ML1+10 are 100MU) 70 parts, 30 parts of 4 third viton FE2701 (three Ai Fu companies), 40 parts of middle medium thermal carbon blacks, 3 parts in calcium hydroxide, 3 parts in plumbous oxide, 1.8 parts of hexafluoro isopropylidene diphenol, 0.3 part of BPP, 0.3 part of sodium stearate, 0.6 part of palm wax, 0.5 part of dicumyl peroxide, 1.2 parts of triallyl isocyanurates add in the mill 70 ℃ mixing down evenly after, through extruding premolding, under 165 ℃ on vulcanizing press molded vulcanization 12min, in 200 ℃ of warm airs, can make liner packing spare behind the post cure 20h, above-mentioned umber is mass parts.
Embodiment 3
With binary viton AH110 (eastern fluorine scientific ﹠ technical corporation, 121 ℃ of following Mooney viscosity ML1+10 are 120MU) 75 parts, 25 parts of 4 third viton FE2701 (three Ai Fu companies), 33 parts of middle medium thermal carbon blacks, 3 parts in calcium hydroxide, 4 parts in plumbous oxide, 2 parts of hexafluoro isopropylidene diphenol, 0.4 part of BPP, 0.25 part of sodium stearate, 0.5 part of palm wax, 0.9 part of dicumyl peroxide, 0.9 part of triallyl isocyanurate add in the mill 70 ℃ mixing down evenly after, through extruding premolding, under 180 ℃ on vulcanizing press molded vulcanization 8min, in 230 ℃ of warm airs, can make liner packing spare behind the post cure 16h, above-mentioned umber is mass parts.
Embodiment 4
With binary viton FPM2603 (morning twilight company, 121 ℃ of following Mooney viscosity ML1+10 are 90MU) 60 parts, 40 parts of 4 third viton FE2701 (three Ai Fu companies), 20 parts of carbon blacks, 5 parts in calcium hydroxide, 6 parts in plumbous oxide, 1.5 parts of hexafluoro isopropylidene diphenol, 0.3 part of BPP, 0.6 part of sodium stearate, 1.2 parts of palm waxs, 1.2 parts of dicumyl peroxides, 1.2 parts of triallyl isocyanurates add in the mill 80 ℃ mixing down evenly after, through extruding premolding, under 177 ℃ on vulcanizing press molded vulcanization 10min, in 250 ℃ of warm airs, can make liner packing spare behind the post cure 8h, above-mentioned umber is mass parts.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (2)
1, a kind of fluorine rubber seal element, it is characterized in that it is to be made by the raw material of following mass parts: 60～80 parts of binary viton, 20～40 parts of 4 third viton, 20～40 parts of carbon blacks, 3～5 parts in calcium hydroxide, 3～6 parts of metal oxides, 1.5～2 parts of hexafluoro isopropylidene diphenol, 0.3～0.5 part of BPP, 0.5～2 part of processing aid, 0.5～1.2 part of dicumyl peroxide, 0.5～1.2 part of triallyl isocyanurate;
Described binary viton is a biasfluoroethylene-hexafluoropropylene binary copolymerization viton, and 121 ℃ of following Mooney viscosity ML1+10 are 80～120MU;
Described carbon black is middle medium thermal carbon blacks;
Described metal oxide is a plumbous oxide;
Described processing aid is the mixture of sodium stearate and palm wax.
2, preparation method according to the described fluorine rubber seal element of claim 1, it is characterized in that comprising the steps: with 60～80 parts of binary viton, 20～40 parts of 4 third viton, 20～40 parts of carbon blacks, 3～5 parts in calcium hydroxide, 3～6 parts of metal oxides, 1.5～2 parts of hexafluoro isopropylidene diphenol, 0.3～0.5 part of BPP, 0.5～2 part of processing aid, 0.5～1.2 part of dicumyl peroxide, 0.5～1.2 part of triallyl isocyanurate add in the mixing facilities 60～80 ℃ mixing down evenly after, through extruding premolding, under 165～180 ℃ on vulcanizing press molded vulcanization 8～12 minutes, post cure can make fluorine rubber seal element after 8～24 hours in 200 ℃～250 ℃ warm airs, and above-mentioned umber is mass parts.
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| CNB2007100315815A CN100564472C (en) | 2007-11-23 | 2007-11-23 | A kind of fluorine rubber seal element and preparation method thereof |
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| CNB2007100315815A CN100564472C (en) | 2007-11-23 | 2007-11-23 | A kind of fluorine rubber seal element and preparation method thereof |
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| CN100564472C true CN100564472C (en) | 2009-12-02 |
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| CN101581719B (en) * | 2009-06-10 | 2013-02-06 | 中国兵器工业集团第五三研究所 | Fluorubber mix standard material for using in test of curometer and preparation method thereof |
| CN101875750B (en) * | 2010-07-27 | 2013-01-23 | 中昊晨光化工研究院 | Low compression and permanent deformation fluororubber compounded rubber and preparation method thereof |
| CN102617959A (en) * | 2011-03-30 | 2012-08-01 | 中国石油化工股份有限公司 | Sulfur-resistant rubber composition |
| CN102250437B (en) * | 2011-06-29 | 2013-04-03 | 中国石油大学(北京) | Acidproof, alkali-proof and hydrogen-sulphide-corrosion-resistant aflas composite |
| CN102505284A (en) * | 2011-11-18 | 2012-06-20 | 吴江市海成纺织有限公司 | Air guide tube protector |
| JP2015512963A (en) | 2012-02-03 | 2015-04-30 | グリーン， ツイード テクノロジーズ， インコーポレイテッド | Rapid gas decompression resistant fluoroelastomer composition and molded article |
| CN102585402A (en) * | 2012-02-28 | 2012-07-18 | 安徽中鼎密封件股份有限公司 | High-strength fluororubber and preparation method, fluororubber sealing element |
| CN104341613B (en) * | 2013-07-28 | 2016-04-13 | 安徽同丰橡塑工业有限公司 | A kind of high temperature resistant Oil-resistant rubber composition and preparation method thereof |
| CN103540066A (en) * | 2013-10-25 | 2014-01-29 | 安徽文峰电子科技集团有限公司 | Modified low-temperature-resistant fluorine rubber cable material |
| CN103554796A (en) * | 2013-10-25 | 2014-02-05 | 安徽文峰电子科技集团有限公司 | Tear-resistant and high-temperature-aging-resistant modified terafluoroethylene-propylene rubber cable material |
| CN103819855B (en) * | 2014-02-27 | 2016-12-07 | 宝山钢铁股份有限公司 | A kind of secondary cold-rolling unit that is used for cuts water rubber and manufacture method thereof |
| CN104072918B (en) * | 2014-06-26 | 2016-04-27 | 安庆市特种橡塑制品有限责任公司 | Storage tank tightness system static conductive rubber combination and production method thereof |
| CN105086296A (en) * | 2015-08-10 | 2015-11-25 | 安徽锦洋氟化学有限公司 | Fluororubber gasket resistant to high-temperature steam and compression permanent deformation and preparing method thereof |
| CN105175952A (en) * | 2015-09-18 | 2015-12-23 | 安徽创业机电设备有限公司 | Pressure-proof high-temperature-resistant motor seal ring |
| CN105419186A (en) * | 2015-12-30 | 2016-03-23 | 崇夕山 | Shaft end O-shaped sealing ring with compression permanent deformation resistance |
| CN107434896B (en) * | 2017-08-29 | 2020-10-09 | 高科橡塑工业有限公司 | Mould pressing traceless fluororubber vulcanized rubber strip and preparation method thereof |
| CN109749316B (en) * | 2017-11-01 | 2021-11-02 | 中国石油化工股份有限公司 | High-temperature water environment resistant tetrapropylene fluoride rubber composition and preparation method thereof |
| CN109971099A (en) * | 2019-03-25 | 2019-07-05 | 无锡市锡达电子科技有限公司 | Rubber and its manufacturing method for vanadium flow battery sealing |
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| CN101168656A (en) | 2008-04-30 |
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Effective date of registration: 20181019 Address after: 510700 205, 4 Maogang Road, Yuzhu street, Whampoa District, Guangzhou, Guangdong 205, 205 Patentee after: Guangzhou Guo Ji intelligent rubber and plastic sealing technology Co., Ltd. Address before: 510700 Maogang Road, Whampoa District, Guangzhou, Guangdong Province, No. 828 Patentee before: Guangzhou Mechanical Engineering Research Institute Co., Ltd. |