CN105175821A - High-strength low-press-deformation oil-resistant valve sealing ring - Google Patents
High-strength low-press-deformation oil-resistant valve sealing ring Download PDFInfo
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- CN105175821A CN105175821A CN201510522059.1A CN201510522059A CN105175821A CN 105175821 A CN105175821 A CN 105175821A CN 201510522059 A CN201510522059 A CN 201510522059A CN 105175821 A CN105175821 A CN 105175821A
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Abstract
The invention discloses a high-strength low-press-deformation oil-resistant valve sealing ring. The sealing ring is composed of the following components in parts by weight: 100 parts of nitrile rubber, 50 to 70 parts of high wear-resistant carbon black, 10 to 30 parts of semi-reinforced carbon black, 5 to 15 parts of ester plasticizer, 1 to 2 parts of anti-aging agent TMQ, 3 to 5 parts of active zinc oxide, 0 to 0.5 part of stearic acid, 3 to 5 parts of coumarone, 1 to 3 parts of vulcanizer, 1 to 2 parts of thiazole promoter, and 1 to 3 parts of triallyl isocyanurate. According to the formula mentioned above, optimal material performances can be obtained: the hardness is 70 to 80, the tensile strength is not less than 21.0 MPa, the elongation rate is in a range of 200 to 350%; the material can tolerate a temperature of 100 DEG C for a long term, and the compression permanent deformation is less than 10%. Compared with the prior art, the provided sealing ring has the advantages of high strength, low press deformation, and good oil resistant performance, and can better meet the requirements on oil resistant performance and sealing property.
Description
Technical field
The present invention relates to rubber item technical field, particularly relate to a kind of high-tenacity low pressure and become oil resistant valve sealing ring.
Background technology
For detecting the test(ing) medium of the oil-proofness of sizing material in prior art, two media oil generally can be used:
1, ASTMNO.1 test oil, concrete composition is: solvent refined heavy waxy oil (content: 30-70%), solvent refined petroleum residues (content: 30-70%);
2, ASTMNO.3 test oil, concrete composition is heavy hydrogenated cycloalkyl fraction (content: 100%);
High-tenacity low pressure becomes the sealing-ring used in oil resistant valve sealing ring main vial road valve system, and sealing circle adopts the manufacture of model pressing process, and main raw is paracril.Sealing circle works in hot oil medium environment, and operating ambient temperature, usually at about 100 DEG C, requires that sealing-ring needs to have good oil-proofness and stopping property at this temperature; Require sealing-ring resistance to ASTMNO.1 test oil volume velocity of variation-10% ~ 5%, resistance to ASTMNO.3 test oil volume velocity of variation 0 ~ 25%, compression set < 10%, tensile yield >=350%; Therefore, the various performances how improving sealing-ring need the problem of solution at present badly.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, and provide that a kind of density is lower, the better high-tenacity low pressure of flame retardant effect becomes oil resistant valve sealing ring.
The technical scheme adopted for realizing object of the present invention is: high-tenacity low pressure becomes oil resistant valve sealing ring, it is characterized in that, component and mass fraction as follows:
Component proportion principle of the present invention is:
(1) the paracril NBR2865 of what major ingredient of the present invention adopted is low acrylonitrile content, mooney viscosity ML (1+4) 125 DEG C is 60-70, and acrylonitrile content is 28%.The rubber of high Mooney viscosity just has higher tensile strength, and acrylonitrile content is low simultaneously, ensures that sizing material has lower compression set.Because butadiene-acrylonitrile rubber 2865 is from reinforcing difference, therefore suitable strengthening agent must coordinated in sizing material, strengthening agent in the present invention's formula is high abrasion furnace carbon black N330 and semi-reinforcing hydrocarbon black N774, N330 particle size carbon black is little, structure is high, the good tensile strength of rubber and the elasticity of elongation and other physical synthesis performance can be given, N774 particle size carbon black is large, structure is little, the rebound resilience that rubber is good can be given, make rubber have good compression set, therefore select high abrasion furnace carbon black N330 and semi-reinforcing hydrocarbon black N774 as strengthening agent;
(2) as adopted common sulfur cross-linking and sulfur-donor vulcanization system, can make the excellent performance of sizing material, its weak point to cause the compression set of sizing material large, can not meet compression set < 10% requirement.Vulcanization system of the present invention is DCP, TAIC, DM vulcanization system, the feature that peroxide cure compression set is little can be given full play to, simultaneously for thick product sulfuration, thiazole accelerator DM vulcanization rate is slow, just in time with peroxide vulcanizing system coupling, reach the object of excellent combination property.
Beneficial effect of the present invention is: adopt high-tenacity low pressure of the present invention to become oil resistant valve sealing ring formula, better material property can be obtained: hardness is 75 ± 5, tensile strength >=21MPa, tensile yield >=350%, resistance toheat life-time service temperature reaches 100 DEG C, resistance to ASTMNO.1 tests oil volume velocity of variation-10% ~ 5%, and resistance to ASTMNO.3 tests oil volume velocity of variation 0 ~ 25%, compression set < 10%; Carry out its performance than prior art products to make moderate progress, thus the requirement of valve seal system can better be met, extend the work-ing life of valve seal.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1:
High-tenacity low pressure becomes oil resistant valve sealing ring, component and mass fraction as follows:
Through test, high-tenacity low pressure prepared by embodiment 1 becomes the physical and mechanical properties of oil resistant valve sealing ring:
Embodiment 2:
High-tenacity low pressure becomes oil resistant valve sealing ring, component and mass fraction as follows:
Through test, high-tenacity low pressure prepared by embodiment 2 becomes the physical and mechanical properties of oil resistant valve sealing ring:
Embodiment 3:
High-tenacity low pressure becomes oil resistant valve sealing ring, component and mass fraction as follows:
Through test, high-tenacity low pressure prepared by embodiment 3 becomes the physical and mechanical properties of oil resistant valve sealing ring:
Embodiment 4:
High-tenacity low pressure becomes oil resistant valve sealing ring, component and mass fraction as follows:
Through test, high-tenacity low pressure prepared by embodiment 4 becomes the physical and mechanical properties of oil resistant valve sealing ring:
It should be noted that, in embodiment 1-4, component is commercially available prod, originates as follows:
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. high-tenacity low pressure becomes oil resistant valve sealing ring, it is characterized in that, component and mass fraction as follows:
2. high-tenacity low pressure according to claim 1 becomes oil resistant valve sealing ring, it is characterized in that the performance index parameter of sealing circle is: hardness 75 ± 5, tensile strength >=21.0MPa, elongation is between 200 ~ 350%, resistance toheat reaches 100 DEG C for a long time, compression set < 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522059.1A CN105175821B (en) | 2015-08-24 | 2015-08-24 | High-tenacity low pressure becomes oil resistant valve sealing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522059.1A CN105175821B (en) | 2015-08-24 | 2015-08-24 | High-tenacity low pressure becomes oil resistant valve sealing ring |
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| CN105175821A true CN105175821A (en) | 2015-12-23 |
| CN105175821B CN105175821B (en) | 2017-07-25 |
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| CN201510522059.1A Active CN105175821B (en) | 2015-08-24 | 2015-08-24 | High-tenacity low pressure becomes oil resistant valve sealing ring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287058A (en) * | 2016-08-30 | 2017-01-04 | 无锡神意环件法兰有限公司 | Novel socket welding flange |
| CN106322025A (en) * | 2016-08-30 | 2017-01-11 | 无锡神意环件法兰有限公司 | Flat welding flange resistant to high pressure |
| CN107746486A (en) * | 2017-10-19 | 2018-03-02 | 中国建筑材料科学研究总院 | Environment-friendly type low pressure becomes abrasive rubber packing ring |
| CN108424557A (en) * | 2018-04-28 | 2018-08-21 | 南京金三力高分子科技有限公司 | A kind of low pressure of resistance to diesel oil becomes nitrile rubber and preparation method thereof |
| CN108752666A (en) * | 2018-05-07 | 2018-11-06 | 安徽普瑞普勒传热技术有限公司 | A kind of nitrile rubber abrasive resistance sealing parts and its preparation process |
| CN109988348A (en) * | 2019-04-27 | 2019-07-09 | 浙江百朗士橡塑科技有限公司 | A kind of rubber material of oil-resistant high-temperature and its preparation method and application |
| CN110724319A (en) * | 2019-11-19 | 2020-01-24 | 江苏创合橡塑有限公司 | Formula of high-hardness low-pressure-change nitrile rubber composition material |
Citations (4)
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| US20030127803A1 (en) * | 2001-07-23 | 2003-07-10 | Nsk Ltd. | Seal |
| CN101338047A (en) * | 2008-08-14 | 2009-01-07 | 中国铁道科学研究院金属及化学研究所 | Low rigidity, low compression permanent deformation cold tolerant butadiene nitrile rubber compositions |
| CN102807690A (en) * | 2012-08-17 | 2012-12-05 | 保定天威今三橡胶工业有限公司 | Formula of nitrile rubber pad for sealing transformer oil |
| CN102924768A (en) * | 2012-11-20 | 2013-02-13 | 上海神开石油化工装备股份有限公司 | High-strength rubber combination with low compression set |
-
2015
- 2015-08-24 CN CN201510522059.1A patent/CN105175821B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030127803A1 (en) * | 2001-07-23 | 2003-07-10 | Nsk Ltd. | Seal |
| CN101338047A (en) * | 2008-08-14 | 2009-01-07 | 中国铁道科学研究院金属及化学研究所 | Low rigidity, low compression permanent deformation cold tolerant butadiene nitrile rubber compositions |
| CN102807690A (en) * | 2012-08-17 | 2012-12-05 | 保定天威今三橡胶工业有限公司 | Formula of nitrile rubber pad for sealing transformer oil |
| CN102924768A (en) * | 2012-11-20 | 2013-02-13 | 上海神开石油化工装备股份有限公司 | High-strength rubber combination with low compression set |
Non-Patent Citations (3)
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| 于清溪: "《橡胶原材料手册》", 31 January 1996, 北京：化学工业出版社 * |
| 张殿荣等: "《现代橡胶配方设计》", 31 October 2001, 北京：化学工业出版社 * |
| 谢忠麟等: "《橡胶制品实用配方大全》", 29 February 2004, 化学工业出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287058A (en) * | 2016-08-30 | 2017-01-04 | 无锡神意环件法兰有限公司 | Novel socket welding flange |
| CN106322025A (en) * | 2016-08-30 | 2017-01-11 | 无锡神意环件法兰有限公司 | Flat welding flange resistant to high pressure |
| CN107746486A (en) * | 2017-10-19 | 2018-03-02 | 中国建筑材料科学研究总院 | Environment-friendly type low pressure becomes abrasive rubber packing ring |
| CN108424557A (en) * | 2018-04-28 | 2018-08-21 | 南京金三力高分子科技有限公司 | A kind of low pressure of resistance to diesel oil becomes nitrile rubber and preparation method thereof |
| CN108752666A (en) * | 2018-05-07 | 2018-11-06 | 安徽普瑞普勒传热技术有限公司 | A kind of nitrile rubber abrasive resistance sealing parts and its preparation process |
| CN109988348A (en) * | 2019-04-27 | 2019-07-09 | 浙江百朗士橡塑科技有限公司 | A kind of rubber material of oil-resistant high-temperature and its preparation method and application |
| CN110724319A (en) * | 2019-11-19 | 2020-01-24 | 江苏创合橡塑有限公司 | Formula of high-hardness low-pressure-change nitrile rubber composition material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105175821B (en) | 2017-07-25 |
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