CN102604178A - Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same - Google Patents
Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same Download PDFInfo
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Abstract
The invention relates to a wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant. Components of the dynamic sealing material comprise rubber matrix materials, the molybdenum disulfide solid lubricant, zinc oxide, stearic acid, anti-ageing agent, accelerator, vulcanizing agent and plasticizer. The wear-resistant modified HNBR, NBR and NBR/PVC dynamic sealing material is prepared by plastication, mixing and vulcanization molding. On the premise of maintaining original advantages of base materials such as oil resistance, corrosion resistance, weather proofing and ageing resistance, a dynamic seal ring for a high-speed running mechanical part and prepared by the three materials has more excellent friction reduction and abrasion resistance, and a certain reinforced modified effect is achieved.
Description
Technical field
The present invention relates to a kind of rubber dynamic sealing material, particularly a kind of HNBR, NBR, NBR/PVC dynamic sealing material that adopts the wear-resisting properties-correcting agent of molybdenumdisulphide solid lubricant.
Background technology
At present, paracril is to use the most a kind of elastomerics in the sealing material, and this mainly has benefited from its excellent oil resistance and comparatively broad use temperature scope (55 ℃～+ 125 ℃).Paracril NBR is the multipolymer of divinyl and vinyl cyanide, and the composition that changes multipolymer can obtain the sealing material under the different working conditionss.Nitrile rubber mainly adopts the production of low temperature emulsion polymerization, and oil-proofness is fabulous, and wear resistance is higher, and thermotolerance is better, and bonding force is strong.Its shortcoming is that lower temperature resistance is poor, ozone resistance is poor, and electrical property is inferior, and elasticity is low slightly.Be mainly used in and make the oil resistant goods,, be usually used in preparing various kinds oil resistant pressing,, also be used to make offset plate and wear part like O shape circle, oil sealing, leather cup, diaphragm, valve, corrugated tube etc. like oil resistant pipe, adhesive tape, diaphragm of rubber and large-scale oil sac etc.
The polarity of paracril is very strong; Generally not so good with the consistency of other polymkeric substance; But with X 050, modified phenolic resins, polymkeric substance that the SE isopolarity is strong; Particularly have consistency preferably with chloride polymkeric substance, normally used is paracril SE NBR/PVC.In addition, for improving processibility and use properties, paracril also normal with non-polar rubber and usefulness such as tree elastomer, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber.The characteristics that are noted that paracril are that oil-proofness is good, all have the trend that reduces oil-proofness with other polymkeric substance and with (except that SE).
Hydrogenated nitrile-butadiene rubber HNBR be breast gather NBR in selecting hydrogenated nbr butadiene unit and make, because of the unsaturated double-bond on the alkene chain be hydrogenated saturated, so be also referred to as highly saturated nitrile rubber HSN.The characteristics of HNBR on molecular structure make it have good heat-resisting and ageing-resistant performance, anti-performance, the resistance to low temperature that contains the gasoline of corrodibility additive, and the quality with the physical and mechanical properties that can high temperature resistantly still keep suitable with normal temperature down.
At high temperature and have under the condition that oil and lubricant exist, be used for the dynamic seal ring of the fast transfer part of machinery branch, have certain wear resistance when paracril and metal friction.But it is, also harsh day by day to each item performance requriements of sealing member along with the progress of modern science and technology.For improving the work-ing life of sealing member; Except will considering the necessary mechanical property of sealing material, elasticity and oil-proofness; The reduction of the coefficient of sliding friction and wear rate in the time of also must realizing elastomeric material and smooth surface to mill; Improve the anti-wear and wear-resistant performance of material to greatest extent, and these the present invention's problems that will solve just.
Summary of the invention
One of purpose of patent of the present invention is guaranteeing that rubbery system inherent oil resistant, corrosion-resistant, weather-proof, ageing-resistant performance preferably under the advantage prerequisite, provide a kind of HNBR, NBR, NBR/PVC dynamic sealing material that possesses the wear-resisting modification of employing molybdenumdisulphide solid lubricant of good anti-wear and wear-resistant performance.
Two of the object of the invention is to provide the sealing preparation methods.
For achieving the above object, the present invention adopts technical scheme following:
A kind of HNBR, NBR, NBR/PVC dynamic sealing material that adopts the wear-resisting modification of molybdenumdisulphide solid lubricant is characterized in that the component of this dynamic sealing material and the quality percentage composition that each is formed are:
100 parts of rubber base material;
0.5～20 part of molybdenumdisulphide solid lubricant;
1～10 part in zinc oxide;
Reinforcing carbon black, 5～150 parts;
Triple Pressed Stearic Acid, 0.1～5 part;
0.5～10 part of vulcanizing agent;
Anti-aging agent, 0.1～5 part;
Promotor, 0.5～10 part;
Softening agent, 1～20 part;
Described rubber base material is: hydrogenated nitrile-butadiene rubber HNBR, paracril NBR or paracril and polychloroethylene blended material NBR/PVC.
Above-mentioned solid lubricant is that particle diameter is the molybdenumdisulphide powder of 0.1 μ m～10 μ m; Said vulcanizing agent is 2,5-dimethyl--2,5 (two tert-butyl peroxy bases) hexane, Di Cumyl Peroxide 99 or sulphur; Described anti-aging agent is the mixture of 2-mercaptobenzimidazole and N-phenyl-2-naphthylamines (D); Described promotor is iso-cyanuric acid triallyl ester; Described softening agent is a DOP.
Two key residual rates of above-mentioned hydrogenated nitrile-butadiene rubber are 0.5～6%.
The preparation method of a kind of HNBR for preparing the above-mentioned wear-resisting modification of employing molybdenumdisulphide solid lubricant, NBR, NBR/PVC dynamic sealing material; The concrete steps that it is characterized in that this method are: each component is mixing to mixing under 40～60 ℃ of roller temperature, and make rubber unvulcanizate and parked 16～20 hours; With the thin pass-out sheet of above-mentioned rubber unvulcanizate back mixing, rubber unvulcanizate is through sulfidization molding, and curing time is that 0.5～1.5 hour, curing temperature are 150～180 ℃, and sulfide stress is 10～15MPa.
Dynamic sealing material of the present invention keeping the original oil resistant of body material, corrosion-resistant, weather-proof, ageing-resistant performance preferably under the advantage prerequisite, possesses better anti-wear and wear-resistant performance, has certain enhancing modified effect simultaneously.
Embodiment
Embodiment one, this embodiment adopt 100 mass parts paracrils (trade mark: NBR-26), 8 mass parts molybdenumdisulphide MoS
2, 2 mass parts zinc oxide, 60 mass parts carbon blacks; 0.3 the mass parts Triple Pressed Stearic Acid, 4 mass parts 2,5-dimethyl--2; 5 (two tert-butyl peroxy bases) hexane (DBPH), 2 mass parts 2-mercaptobenzimidazoles (MBI), 1 mass parts N-phenyl-2-naphthylamines (D); 6 mass parts iso-cyanuric acid triallyl esters (TAIC), 10 mass parts DOPs (DOP).Employing low temperature is mixing, adds the base rubber sizing material of 100 mass parts earlier, adds molybdenumdisulphide, zinc oxide, carbon black, Triple Pressed Stearic Acid, anti-aging agent, promotor, vulcanizing agent, softening agent more successively, and 40～60 ℃ of mixing roller temperature make rubber unvulcanizate and parked 16～20 hours; With the thin pass-out sheet of above-mentioned rubber unvulcanizate back mixing, rubber unvulcanizate is through sulfidization molding before the sulfuration, and curing time is that 0.5～1.5 hour, curing temperature are 150～180 ℃, and sulfide stress is 10～15MPa.
Embodiment two, this embodiment adopt the polychloroethylene blended material of 100 mass parts paracrils (trade mark: NBR-26/PVC-32), 10 mass parts molybdenumdisulphide MoS
2, 2 mass parts zinc oxide, 80 mass parts carbon blacks; 0.2 the mass parts Triple Pressed Stearic Acid, 6 mass parts 2,5-dimethyl--2; 5 (two tert-butyl peroxy bases) hexane (DBPH), 1 mass parts 2-mercaptobenzimidazole (MBI), 1 mass parts N-phenyl-2-naphthylamines (D); 4 mass parts iso-cyanuric acid triallyl esters (TAIC), 5 mass parts DOPs (DOP).Other is identical with specific embodiment one.
Embodiment three, this embodiment adopt 100 mass parts hydrogenated nitrile-butadiene rubbers (trade mark: Zetpol2010L), 5 mass parts molybdenumdisulphide MoS
2, 3 mass parts zinc oxide, 50 mass parts carbon blacks; 0.5 the mass parts Triple Pressed Stearic Acid, 5 mass parts 2,5-dimethyl--2; 5 (two tert-butyl peroxy bases) hexane (DBPH), 1 mass parts 2-mercaptobenzimidazole (MBI), 1 mass parts N-phenyl-2-naphthylamines (D); 5 mass parts iso-cyanuric acid triallyl esters (TAIC), 5 mass parts DOPs (DOP).Other is identical with specific embodiment one.
Embodiment four, this embodiment adopt 100 mass parts hydrogenated nitrile-butadiene rubbers (trade mark: Zetpol2010L), 5 mass parts molybdenumdisulphide MoS
2, 3 mass parts zinc oxide, 50 mass parts carbon blacks; 0.5 mass parts Triple Pressed Stearic Acid; 5 mass parts sulphur, 1 mass parts 2-mercaptobenzimidazole (MBI), 1 mass parts N-phenyl-2-naphthylamines (D); 5 mass parts iso-cyanuric acid triallyl esters (TAIC), 5 mass parts DOPs (DOP).Other is identical with specific embodiment one.
Above-mentioned four kinds of prescription batchings behind mixing, sulfidization molding, are carried out the full test of mechanical property and kinetic friction polishing machine again, and the result lists in table 1 and table 2.
The mechanical property of four kinds of prescriptions of table 1. rubbery system
The sliding frictional wear performance of four kinds of prescriptions of table 2. rubbery system
* test load 100N, test period 1hr, all the other TPs are identical with other material.
* adds once totally 3 of oil, 30# machine oil when per hour beginning.
In the table 1 in the mechanical property performance test with reference to national standard: tensile strength at yield (comprising elongation): GB/T528-1992, compression set rate: GB/T7759-1992, shore hardness: GB/T531-1992.
The sliding frictional wear PT is with reference to national standard: GB3960-83 in the table 2.
Claims (4)
1. HNBR, NBR, NBR/PVC dynamic sealing material that adopts the wear-resisting modification of molybdenumdisulphide solid lubricant is characterized in that the component of this dynamic sealing material and quality percentage composition that each is formed are:
100 parts of rubber base material;
0.5～20 part of molybdenumdisulphide solid lubricant;
1～10 part in zinc oxide;
Reinforcing carbon black, 5～150 parts;
Triple Pressed Stearic Acid, 0.1～5 part;
0.5～10 part of vulcanizing agent;
Anti-aging agent, 0.1～5 part;
Promotor, 0.5～10 part;
Softening agent, 1～20 part;
Described rubber base material is: hydrogenated nitrile-butadiene rubber HNBR, paracril NBR or paracril and polychloroethylene blended material NBR/PVC.
2. the dynamic sealing material of the wear-resisting modification of molybdenumdisulphide solid lubricant according to claim 1 is characterized in that described solid lubricant is that particle diameter is the molybdenumdisulphide powder of 0.1 μ m～10 μ m; Said vulcanizing agent is 2,5-dimethyl--2,5 (two tert-butyl peroxy bases) hexane, Di Cumyl Peroxide 99 or sulphur; Described anti-aging agent is the mixture of 2-mercaptobenzimidazole and N-phenyl-2-naphthylamines (D); Described promotor is iso-cyanuric acid triallyl ester; Described softening agent is a DOP.
3. the HNBR of the wear-resisting modification of employing molybdenumdisulphide solid lubricant according to claim 1, NBR, NBR/PVC dynamic sealing material is characterized in that two key residual rates of described hydrogenated nitrile-butadiene rubber are 0.5～6%.
4. preparation method who prepares HNBR according to claim 1, the wear-resisting modification of 2 or 3 described employing molybdenumdisulphide solid lubricants, NBR, NBR/PVC dynamic sealing material; The concrete steps that it is characterized in that this method are: each component is mixing to mixing under 40～60 ℃ of roller temperature, and make rubber unvulcanizate and parked 16～20 hours; With the thin pass-out sheet of above-mentioned rubber unvulcanizate back mixing, rubber unvulcanizate is through sulfidization molding, and curing time is that 0.5～1.5 hour, curing temperature are 150～180 ℃, and sulfide stress is 10～15MPa.
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| CN2012100628346A CN102604178A (en) | 2011-11-29 | 2012-03-12 | Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same |
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| CN201110384987 | 2011-11-29 | ||
| CN201110384987.8 | 2011-11-29 | ||
| CN2012100628346A CN102604178A (en) | 2011-11-29 | 2012-03-12 | Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same |
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| CN103171065A (en) * | 2013-03-14 | 2013-06-26 | 西北工业大学 | Mould releasing glue for mould and preparation method thereof |
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| CN104177677A (en) * | 2013-08-23 | 2014-12-03 | 青岛开世密封工业有限公司 | High-strength low-compressive-strain easily-adhesive mixed rubber and sealing gasket thereof |
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| CN105400029A (en) * | 2015-12-15 | 2016-03-16 | 合肥李诺新材料贸易有限公司 | Molybdenum disulfide polyvinyl chloride rubber composite material with good durability |
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Application publication date: 20120725 |