CN102352073A - Elastic shim plate material for steel rail fastener - Google Patents
Elastic shim plate material for steel rail fastener Download PDFInfo
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- CN102352073A CN102352073A CN 201110250161 CN201110250161A CN102352073A CN 102352073 A CN102352073 A CN 102352073A CN 201110250161 CN201110250161 CN 201110250161 CN 201110250161 A CN201110250161 A CN 201110250161A CN 102352073 A CN102352073 A CN 102352073A
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- rubber
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- resilient sleeper
- bearing material
- rail fastening
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Abstract
The invention provides an elastic shim plate material for a steel rail fastener. The material contains the following components in part by mass: 1 to 4 parts of styrene butadiene rubber (SBR), 96 to 100 parts of ternary ethylene propylene rubber, 5 to 10 parts of sulfide, 5 to 10 parts of carbon black, 15 to 25 parts of kaolin or metakaolin, and 5 to 15 parts of plasticizer. The material can frequently bear the comprehensive effect of dynamic intermittent impact load and shrinkage stress of a track bed board, has good compression set and dynamic fatigue performance and good hot air ageing resistance and alkali resistance, and can reduce vibration and noise.
Description
Technical field
The invention belongs to railway track fastener technology field, relate in particular to a kind of novel elastic backing material of using at rail fastening.
Background technology
Rail fastening be exactly on the track in order to connect the part of rail and sleeper (or other types sub rail foundation), claim intermediate fastening again.Its effect is that rail is fixed on the sleeper, keep gauge with stop rail with respect to sleeper in length and breadth to moving.Resilient sleeper-bearing belongs to railway bed accessory, is specially a kind of resilient sleeper-bearing that in railway, high-speed railway, uses, and is especially a kind of at the resilient sleeper-bearing that uses under the ballast aggregate under the solid concrete roabed plate, under the platoon short slab railway roadbed.
Elastic properties of materials backing plate of the present invention comprises plate body; Plate body comprises wear-resisting elastic layer and buffering elastomerics; Buffering elastomer is positioned at wear-resisting elastic layer below; Or between two wear-resisting elastic layers, or be positioned among the wear-resisting elastic layer face rigidity or Young's modulus that the face rigidity of buffering elastomer or Young's modulus are lower than wear-resisting elastic layer.
Compare the backing plate of common railway fastener; The high-speed railway rubber bearing in use will exist following problem 1. rubber bearing under loading action; The internal stress that produces is high more a lot of than the backing plate of common line; Same life cycle, the damaged situation of rubber bearing is serious relatively, and the permanentset that produces is bigger than the backing plate of common line; 2. the railway rail pad that uses on present China common line partly adopts styrene-butadiene rubber(SBR), and the weathering characteristics of this rubber is relatively poor relatively, under factor effects such as heat, oxygen, ultraviolet ray and rainwater; Can reduce greatly the work-ing life of elastomeric material; Under the high frequency loading action, quicken the weathering process of material simultaneously, caused the material premature failure; Usually show as the rubber stickness, can stick in rail foot; 3. the inefficacy of material will directly cause the variation of the quiet rigidity of backing plate, and universal law is that the rigidity value of rubber bearing increased before this, afterwards decay gradually again.The variation of backing plate rigidity will influence the stable of train; 4. under loading action, the recoverable deformation of rubber bearing is bigger, is prone to cause fastener loosening, is difficult for keeping buckle press.
In addition; On the railway of many countries, extensively adopted at present concrete sleeper; But, therefore, introduce elastic properties of materials backing plate of the present invention as solving elasticity and Insulation Problems and not only have good elasticity, bearing capacity and weather resistance because it lacks elasticity and insulating property that sleeper had; Longer service life; Can play good shock absorption after the application, reduce vibration and noise significantly, can be widely used in engineering fields such as solid concrete roabed below buffer shock-absorbing, ballasted track ballast aggregate below buffer shock-absorbing and platoon short slab below buffer shock-absorbing.
Summary of the invention
The objective of the invention is to propose a kind of comprehensive action that can frequently bear bed board dynamic intermittent shock load and string stress, have the good compression tension set and dynamic fatigue property, heat-resisting air aging characteristic and alkaline-resisting characteristic are good, and have vibration damping and use the resilient sleeper-bearing material with the rail fastening that reduces noise.
Rail fastening is used the resilient sleeper-bearing material, it is characterized in that containing the component of following mass parts: benzene rubber (SBR) 1-4, terpolymer EP rubber 96 ~ 100, sulfide 5-10, carbon black 5 ~ 10, kaolin or metakaolin 15 ~ 25, softening agent 5 ~ 15.
The present invention utilizes polymer modification ethylene-propylene rubber(EPR) technology, through vulcanization crosslinking and adding reinforced particulate, the backing plate resistance to elevated temperatures is improved; Make backing plate have low permanent compression set simultaneously; The adding that strengthens body is further strengthened backing plate intensity, insulation, wear resistance and static deflection, adds a certain amount of inhibitor and auxiliary rheological agents simultaneously, and the defective of backing plate is reduced; Ageing resistance strengthens, and the resilient sleeper-bearing various aspects of performance satisfies the relevant industries technical requirement.
Resilient sleeper-bearing body material of the present invention is styrene-butadiene rubber(SBR) (SBR) modified EPT rubber; It is mobile that ethylene-propylene rubber(EPR) has excellent anti-ultraviolet, anti-ozone, heat-resisting, acid and alkali-resistance, water-fast steam, colour stability, electrical property, oil-filled property and normal temperature; SBR rubber has good limit elongation and anti-fatigue ability; And has a good resilience; SBR modified EPT rubber provides high screen resilience simultaneously through flexural deformations and compressive set, reaching damping effect, and can absorb noise; The two add-on is SBR/ terpolymer EP rubber=(1 ~ 4)/(96 ~ 100).
The present invention adopts sulphur and superoxide composite sulfuration system; Through technologies such as curing temperature and vulcanization rate are regulated; (SX-), monosulfidic bond is (S-) with (C-C) ratio of key for the polysulfidic bond of control in the sulfide; Improve the heat aging property of resilient sleeper-bearing, and can prevent the cross-linking process molecular rupture, with tensile strength, tear strength, wear resistance and the high temperature resistant tear resistance of improving vulcanized rubber; And make the resilient sleeper-bearing excellent heat resistance, have utmost point low compression set and reversion resistance simultaneously; The add-on of sulfide is 5 ~ 10.
The present invention adopts the reinforced particulate of the carbon black of high structure level as the resilient sleeper-bearing material, and adds a certain amount of kaolin or wear resisting property and the erosion-resisting characteristics of metakaolin to improve resilient sleeper-bearing; Wherein the sooty specific surface area must be 100000m
2More than/the kg, carbon content must be for more than 98.5%.Kaolinic Fe content must be for below 0.5%, and specific surface area must be 22000m
2More than/the kg; The two add-on is carbon black/kaolin=(5 ~ 10)/(15 ~ 25).
The present invention adopts the saturated and unsaturated fatty acids zinc salt softening agent as mixing process, and therefore softening agent has good physics lubrication owing in rubber, have solubility in Rubber processing; Also has simultaneously certain effect of separating of moulding; Plasticate, in the Rubber processing such as mixing, extrusion, softening agent significantly reduces tree elastomer and elastomeric viscosity, especially reduces the compound viscosity after filled; Improve the flow characteristics of sizing material; Reduce power consumption of polymer processing and sizing material temperature rise greatly, enhance productivity, the add-on of softening agent is 5 ~ 15 in the refining process.
The present invention adds a certain amount of compound inhibitor in the resilient sleeper-bearing material.One of compound inhibitor is not for to have influence, the good phenolic type antioxidant of heat-resisting oxygen property to the vulcanization of rubber and plasticity number; Another kind of inhibitor component is the fluorescence screener, to reduce fluorescence intensity, fluorescence grade, effectively to reduce fluorescence the various hazardness of being brought, increases substantially the photooxidation aging property of product; The two additional proportion is phenolic type antioxidant/fluorescence screener=(0.5 ~ 1.0)/(0.2 ~ 0.5).
The present invention also adds antifatigue, antistatic etc. some other auxiliary agent, and its add-on is 5 ~ 10.
Rail fastening of the present invention is used the resilient sleeper-bearing material; This resilient sleeper-bearing material adopts polymer modification ethylene-propylene rubber(EPR) technology; Strengthen body through vulcanization crosslinking and adding carbon black pellet; And, make the resilient sleeper-bearing resistance to elevated temperatures be improved through adding a certain amount of auxiliary rheological agents and inhibitor, make backing plate have low permanent compression set simultaneously; Backing plate intensity, insulation, wear resistance, resistance of aging and static deflection are further strengthened, and the resilient sleeper-bearing material of production satisfies the requirement of industry correlation technique.
Embodiment
Basic recipe: benzene rubber (SBR) 1-4, terpolymer EP rubber 96 ~ 100, sulfide 5-10, carbon black 5 ~ 10, kaolin 15 ~ 25, softening agent 5 ~ 15.
Particularly, can be: benzene rubber (SBR) 1-2, terpolymer EP rubber 96 ~ 98, sulfide 7-8, carbon black 6 ~ 8, kaolin 18 ~ 20, softening agent 9 ~ 12.
The present invention also can add the compound inhibitor of being made up of phenolic type antioxidant and fluorescence screener, and both mass parts are 0.5 ~ 1.0 and 0.2 ~ 0.5.
The present invention also can add antifatigue, antistatic etc. some other auxiliary agent, and its add-on is 5 ~ 10.
More specifically, adopt prescription to be (mass parts): styrene-butadiene rubber(SBR) 3; Terpolymer EP rubber 100; Sulfide 7.5; Carbon black 5; Kaolin 20; Softening agent 10; Inhibitor 1; Other auxiliary agents 7.5.Performance to the resilient sleeper-bearing material is tested, and the result is as shown in table 1.
The performance of table 1 resilient sleeper-bearing material
Table 1 shows, through above-mentioned technology and the resilient sleeper-bearing material that prescription obtains, can fully satisfy the requirement of " the provisional technical qualification of passenger dedicated railway line non-fragment orbit fill-type backing plate " (No. [2008] 74, science and technology base).
Claims (6)
1. rail fastening is used the resilient sleeper-bearing material, it is characterized in that containing the component of following mass parts: benzene rubber (SBR) 1-4, terpolymer EP rubber 96 ~ 100, sulfide 5-10, carbon black 5 ~ 10, kaolin or metakaolin 15 ~ 25, softening agent 5 ~ 15.
2. rail fastening according to claim 1 is used the resilient sleeper-bearing material, it is characterized in that containing the component of following mass parts: benzene rubber (SBR) 1-2, terpolymer EP rubber 96 ~ 98, sulfide 7-8, carbon black 6 ~ 8, kaolin or metakaolin 18 ~ 20, softening agent 9 ~ 12.
3. rail fastening according to claim 1 and 2 is used the resilient sleeper-bearing material, it is characterized in that: the sooty specific surface area is 100000m
2More than/the kg, carbon content is more than 98.5%, and kaolinic Fe content is below 0.5%, and specific surface area is 22000m
2More than/the kg.
4. rail fastening according to claim 1 and 2 is used the resilient sleeper-bearing material, it is characterized in that: softening agent is saturated and the unsaturated fatty acids zinc salt.
5. rail fastening according to claim 1 and 2 is used the resilient sleeper-bearing material, it is characterized in that: also add the compound inhibitor of being made up of phenolic type antioxidant and fluorescence screener, both mass parts are 0.5 ~ 1.0 and 0.2 ~ 0.5.
6. rail fastening according to claim 1 and 2 is used the resilient sleeper-bearing material, it is characterized in that: also add antifatigue, anlistatig auxiliary agent, its add-on mass parts is 5 ~ 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250161 CN102352073B (en) | 2011-08-29 | 2011-08-29 | Elastic shim plate material for steel rail fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250161 CN102352073B (en) | 2011-08-29 | 2011-08-29 | Elastic shim plate material for steel rail fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102352073A true CN102352073A (en) | 2012-02-15 |
| CN102352073B CN102352073B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110250161 Active CN102352073B (en) | 2011-08-29 | 2011-08-29 | Elastic shim plate material for steel rail fastener |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107118411A (en) * | 2017-03-31 | 2017-09-01 | 苏州海歌电器科技有限公司 | Damping material used for electric engine of cleaner |
| RU187649U1 (en) * | 2018-11-19 | 2019-03-14 | Общество с ограниченной ответственностью "ГСК Красный Треугольник" | Plantar lining |
| CN109610247A (en) * | 2018-11-26 | 2019-04-12 | 任震环 | A kind of solid elastomer vibration damping band |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986628A (en) * | 2006-12-15 | 2007-06-27 | 四川宏亿复合材料工程技术有限公司 | Rail backing board of modified composite microporous rubber-plastic material for railway and its making process |
| CN101381485A (en) * | 2008-10-20 | 2009-03-11 | 无锡铁华橡塑有限公司 | Rubber backing plate of passenger dedicated line |
| EP2087986A1 (en) * | 2008-02-05 | 2009-08-12 | Semperit Aktiengesellschaft Holding | Injection moulded or injection pressed underlay board or mat for rails and method for producing same |
| CN101817957A (en) * | 2010-04-09 | 2010-09-01 | 北京化工大学 | Low-lag microcellular rubber material for oscillation reduction of high-speed railway fastener and preparation method thereof |
-
2011
- 2011-08-29 CN CN 201110250161 patent/CN102352073B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986628A (en) * | 2006-12-15 | 2007-06-27 | 四川宏亿复合材料工程技术有限公司 | Rail backing board of modified composite microporous rubber-plastic material for railway and its making process |
| EP2087986A1 (en) * | 2008-02-05 | 2009-08-12 | Semperit Aktiengesellschaft Holding | Injection moulded or injection pressed underlay board or mat for rails and method for producing same |
| CN101381485A (en) * | 2008-10-20 | 2009-03-11 | 无锡铁华橡塑有限公司 | Rubber backing plate of passenger dedicated line |
| CN101817957A (en) * | 2010-04-09 | 2010-09-01 | 北京化工大学 | Low-lag microcellular rubber material for oscillation reduction of high-speed railway fastener and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107118411A (en) * | 2017-03-31 | 2017-09-01 | 苏州海歌电器科技有限公司 | Damping material used for electric engine of cleaner |
| CN107118411B (en) * | 2017-03-31 | 2019-06-28 | 苏州海歌电器科技有限公司 | Damping material used for electric engine of cleaner |
| RU187649U1 (en) * | 2018-11-19 | 2019-03-14 | Общество с ограниченной ответственностью "ГСК Красный Треугольник" | Plantar lining |
| CN109610247A (en) * | 2018-11-26 | 2019-04-12 | 任震环 | A kind of solid elastomer vibration damping band |
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| Publication number | Publication date |
|---|---|
| CN102352073B (en) | 2013-05-08 |
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Address after: 611930 Chengdu high tech Zone, West Park, Tianhe Road, Sichuan Applicant after: Sichuan Southwest Jiaotong University Railway Development Co., Ltd. Address before: 611930, Chengdu, Sichuan, Huayuan Road Ma home No. 10, attached to the 1 floor, 2 floor, Chengdu Applicant before: Sichuan Southwest Jiaotong University Railway Development Co., Ltd. |
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Address after: 611930 Chengdu high tech Zone, West Park, Tianhe Road, Sichuan Patentee after: The development of Limited by Share Ltd of Sichuan railway Southwest Jiaotong University Address before: 611930 Chengdu high tech Zone, West Park, Tianhe Road, Sichuan Patentee before: Sichuan Southwest Jiaotong University Railway Development Co., Ltd. |