CN114196077A - Track pad raw material composition, track pad, manufacturing method and application thereof - Google Patents
Track pad raw material composition, track pad, manufacturing method and application thereof Download PDFInfo
- Publication number
- CN114196077A CN114196077A CN202111623314.3A CN202111623314A CN114196077A CN 114196077 A CN114196077 A CN 114196077A CN 202111623314 A CN202111623314 A CN 202111623314A CN 114196077 A CN114196077 A CN 114196077A
- Authority
- CN
- China
- Prior art keywords
- parts
- rubber
- magnetic field
- powder
- vulcanization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
- E01B9/681—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
Abstract
The invention relates to the field of transportation and provides a track pad raw material composition, which comprises a rubber matrix, magnetic powder, a filler, an organic assistant and a vulcanization assistant. The invention provides a track base plate and a manufacturing method and application thereof. The backing plate can be used as an elastic layer in a fastener and placed between a sleeper and a steel rail, and the rigidity and damping characteristics of the backing plate can be adjusted in real time through an external magnetic field device, so that adverse effects such as track vibration noise are reduced, and the operation level is improved.
Description
Technical Field
The invention relates to the field of transportation, in particular to a track base plate raw material composition, a track base plate and a manufacturing method and application thereof.
Background
With the rapid development of rail transit, a large number of rail transit vibration reduction and noise reduction schemes are applied. The most widely used technical scheme is that a rubber base plate is arranged between a steel rail and a sleeper and is used for buffering high-speed vibration and impact generated when a vehicle passes through the rail, so that a roadbed and the sleeper are protected. The under-rail backing plate serves as a main source of elasticity and damping of the rail, and the material and structural properties of the under-rail backing plate influence the vibration response of the steel rail in most frequency domain ranges.
In the application of the rail fastener, the elastic base plate needs to be designed and manufactured according to different line types, train axle weights, requirements for vibration reduction and noise reduction and the like. However, due to the limited nature of the elastomer material such as rubber, the stiffness of the resilient pad cannot be changed after manufacture and installation, and cannot be adjusted in real time to the changing conditions of the rail, vehicle or environment.
Disclosure of Invention
Aiming at the defects of the existing track pad technology, the invention aims to provide a manufacturing technology of a variable-rigidity rubber-based magnetorheological elastic pad and application thereof.
According to a first aspect of the present invention, there is provided a rail pad stock composition comprising a rubber matrix, magnetic powder, a filler, an inorganic aid, and a vulcanization aid.
According to a second aspect of the present invention, there is provided a rail pad made from a feedstock comprising the composition of the present invention.
According to a third aspect of the present invention, there is provided a method for manufacturing a track pad, comprising kneading, press-molding, magnetic field prefabrication and vulcanization of a raw material containing the composition of the present invention.
According to a fourth aspect of the present invention, there is provided a rail pad manufactured by the manufacturing method of the present invention.
According to a fifth aspect of the invention, there is provided the use of the rail shim plate of the invention as an elastic shim plate for railway fasteners.
The backing plate can be used as an elastic layer in the fastener and can be arranged between a sleeper and a steel rail or between the sleeper and a fastener iron backing plate, and the rigidity and damping characteristics of the backing plate can be adjusted in real time through an external magnetic field device, so that the rigidity and damping of the fastener or a track structure are changed, the adverse effects of track vibration noise and the like are reduced, and the operation level is improved.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The invention provides a track pad raw material composition, which comprises a rubber matrix, magnetic powder, a filler, an inorganic additive and a vulcanization additive.
The invention provides a track pad raw material composition, which is prepared by blending a rubber matrix such as natural rubber and/or butadiene rubber and assisting with various auxiliaries through mixing, prefabrication and vulcanization.
According to a preferred embodiment of the present invention, the composition comprises, by weight, 80 to 120 parts of a rubber matrix, 50 to 200 parts of a magnetic powder, 10 to 40 parts of a filler, 6 to 12 parts of an inorganic auxiliary agent, and 1 to 5 parts of a vulcanization auxiliary agent.
According to a preferred embodiment of the present invention, the composition preferably comprises, in parts by weight, 100-110 parts of a rubber matrix, 180 parts of magnetic powder 120, 20-35 parts of a filler, 6-10 parts of an inorganic aid and 1-3 parts of a vulcanization aid.
By adopting the preferable proportion, the composition can be used for manufacturing the base plate, and the manufactured base plate has excellent elasticity and mechanical property, better heat resistance and aging resistance, longer service life and the advantage of variable rigidity damping characteristic.
According to the invention, the type of the rubber matrix is not particularly required, and rubber matrices commonly used in the art can be used in the invention, such as natural rubber and/or butadiene rubber, etc., according to a preferred embodiment of the invention, the rubber matrix preferably comprises both natural rubber and butadiene rubber, wherein the natural rubber accounts for 70-95% and the butadiene rubber accounts for 5-30% of the rubber matrix by weight of 100%. The base plate manufactured by adopting the preferable rubber matrix can realize excellent elasticity and mechanical property of the track base plate, and has the characteristics of low heat generation, good low-temperature property and good wet skid resistance.
According to the present invention, the selectable range of the kind of the magnetic powder is wide, and for the present invention, it is preferable that the magnetic powder is selected from one or more of carbonyl iron powder, iron sand, iron silicon powder, and iron nickel powder; more preferably, the magnetic powder is selected from one or more of carbonyl iron powder and iron silicon powder. The preferable magnetic powder is applied to manufacturing the track pad plate, so that the manufactured track pad plate has the magnetorheological property, and the rigidity and damping adjustment range under a magnetic field is wider.
According to the invention, the filler can be selected from a wide range of types, for example carbon materials and/or inorganic non-metallic materials.
According to the invention, the filler can be selected from a wide range of types, such as one or more of carbon black, white carbon, graphite and china clay, preferably selected from carbon black N550, and the aforementioned preferred fillers can be used for manufacturing the track pad of the invention, so that the strength, the wear resistance and the service life of the pad can be improved.
According to the present invention, the kind of the inorganic auxiliary agent is widely selected, and one or more selected from zinc oxide, an anti-aging agent, a flow auxiliary agent and a scorch retarder is preferable for the present invention. The inorganic auxiliary agent can improve the dispersibility of other fillers and magnetic powder, reduce the difference of rubber materials, increase the stability and improve the magneto-rheological effect. Meanwhile, in the compression molding process, the rubber material has good fluidity and is easy to mold, the dimensional stability of the track base plate is improved, and the problems of dents, sponginess and the like caused by uneven distribution of the filler on the surface of the product are reduced.
According to a preferred embodiment of the present invention, the vulcanization aid is selected from one or more of KL608, accelerator CZ, accelerator DTDM, accelerator TMTD and sulfur, and the use of the aforementioned vulcanization aid for manufacturing the track pad of the present invention provides good scorch resistance and high processing safety of the rubber material, and the track pad has good heat resistance and aging resistance, and prolongs the service life of the pad.
According to a preferred embodiment of the invention, the composition comprises:
70 to 95 parts of natural rubber; 5 to 30 portions of butadiene rubber; 10 to 40 parts of carbon black N550 and/or carbon black N220; carbonyl iron powder, 50 to 200 parts; 3-5 parts of zinc oxide; 1-2 parts of stearic acid; 1-2 parts of an anti-aging agent RD; flow aid KL608, 1-3 parts; 1-2 parts of promoter CZ; 0.5 to 1 portion of accelerator DTDM; 0.2 to 1 portion of promoter TMTD; 0.5 to 2 portions of sulfur; 0.2 to 0.5 portion of scorch retarder CTP.
According to a preferred embodiment of the invention, the composition comprises: preferably carbonyl iron powder, 150 to 180 parts.
The invention provides a track pad, which is made of raw materials containing the composition; preferably, the rigidity of the track backing plate is 50-80, the variable range of the rigidity is 10% -50%, the damping ratio is 0.05-0.2, and the variable range of the damping ratio is 5% -20%.
The invention provides a method for manufacturing a track pad, which comprises the steps of mixing, pressing, prefabricating a magnetic field and vulcanizing raw materials containing the composition.
According to a preferred embodiment of the invention, it is preferred that the method comprises:
(1) putting a rubber matrix into an internal mixer;
(2) then adding magnetic powder, filler, flow promoter and anti-aging agent to carry out primary mixing;
(3) then adding an accelerator, a scorch retarder and sulfur for second-stage mulling;
(4) putting the mixed rubber material into a mould for compression molding;
(5) prefabricating the pressed product in a magnetic field under the action of the magnetic field;
(6) and vulcanizing the prefabricated product.
According to a preferred embodiment of the invention, the method comprises:
(1) firstly, putting natural rubber plasticated rubber and butadiene rubber into an internal mixer for internal mixing;
(2) then zinc oxide, stearic acid, an anti-aging agent, a flow promoter, carbon black and carbonyl iron powder are sequentially added for first-stage mixing;
(3) then adding sulfur, an accelerator and a scorch retarder for second-stage mulling;
(4) putting the mixed rubber material into a mould for compression molding;
(5) prefabricating the pressed product in a magnetic field under the action of the magnetic field;
(6) and vulcanizing the prefabricated product.
In the present invention, the mixing conditions in the first stage of step (2) can be selected within a wide range, and for the present invention, it is preferable to include: the temperature is 105-120 ℃, the time is 180-210s, and the pressure is 10-15 MPa.
In the present invention, conditions for the second-stage kneading in step (3) can be selected widely, and in the present invention, it is preferable that the conditions for the second-stage kneading in step (3) include: the temperature is 90-100 ℃, the time is 160-200s, and the pressure is 10-15 MPa.
In the present invention, the conditions for the press molding in step (4) can be selected in a wide range, and for the present invention, the preferable conditions for the press molding in step (4) include: the temperature is 100 ℃ and 180 ℃, the time is 1-10s, and the pressure is 9-12 MPa.
In the present invention, the optional range of the magnetic field prefabrication in the step (5) is wide, and for the present invention, the preferable conditions of the magnetic field prefabrication in the step (5) include: the time is 10-60min, the temperature is 80-100 ℃, the magnetic field intensity is 0.6-1T, magnetic particles in the backing plate can form a chain shape through magnetic field prefabrication, the magneto-rheological effect is increased, and the adjustable range of rigidity and damping is enlarged.
In the present invention, the conditions for the vulcanization in step (6) can be selected widely, and for the present invention, it is preferable to include: the temperature is 145-160 ℃, 400-1200s and the pressure is 5-12 MPa.
According to a preferred embodiment of the present invention, the track pad composition of the present invention comprises: 70 to 95 parts of natural rubber; 5 to 30 portions of butadiene rubber; 10 to 40 parts of carbon black N550 and/or carbon black N220; carbonyl iron powder, 50 to 200 parts; 3-5 parts of zinc oxide; 1-2 parts of stearic acid; 1-2 parts of an anti-aging agent RD; flow aid KL608, 1-3 parts; 1-2 parts of promoter CZ; 0.5 to 1 portion of accelerator DTDM; 0.2 to 1 portion of promoter TMTD; 0.5 to 2 portions of sulfur; 0.2 to 0.5 portion of scorch retarder CTP.
The specific manufacturing process is as follows:
mixing: firstly, putting natural rubber plasticated rubber and butadiene rubber into an internal mixer, and internally mixing for 30-60 seconds; then sequentially adding zinc oxide, stearic acid, an anti-aging agent, a flow promoter, carbon black and carbonyl iron powder, and carrying out first-stage mixing at the rubber discharge temperature of 90-105 ℃; the primary rubber compound, the sulfur, the accelerator and the scorch retarder are subjected to two-stage mixing on an open mill, and the two-stage mixing is preferably carried out, such as rubber tapping, packaging, film rolling, sheet discharging and mixing effect enhancing, which are well known in the art and are not described in detail, and then the primary rubber compound, the sulfur, the accelerator and the scorch retarder are placed for a certain time, such as 5 to 20 hours;
prefabricating a magnetic field: and putting the mixed rubber material into a mold, heating the mold, closing the mold for pressing, keeping the pressure at 9-12MPa for 1-10 seconds, and putting the mold into a parallel magnetic field for prefabricating the rubber material in the magnetic field for 10-60 minutes at the temperature of 50-120 ℃.
And (3) vulcanization: and vulcanizing the prefabricated rubber compound and the die on a flat vulcanizing machine, wherein the vulcanizing temperature is 145-160 ℃, the vulcanizing time is 400-1200s, and the pressure is 5-12 MPa.
The invention provides the track pad plate manufactured by the manufacturing method, preferably, the rigidity of the track pad plate is 50-80, the variable range of the rigidity is 10-50%, the damping ratio is 0.05-0.2, and the variable range of the damping ratio is 5-20%.
The invention provides application of the track base plate in serving as an elastic base plate for railway fasteners.
Example 1
The weight formula is as follows: 80 parts of natural rubber; 20 parts of butadiene rubber; 20 parts of carbon black N220; 150 parts of carbonyl iron powder; 5 parts of zinc oxide; 2 parts of stearic acid; 1.6 parts of an anti-aging agent RD; flow aid KL608, 2 parts; 1.6 parts of accelerator CZ; 0.8 part of accelerator DTDM; 0.6 part of promoter TMTD; 1 part of sulfur; 0.2 part of antiscorching agent CTP;
mixing: firstly, putting natural rubber plasticated rubber and butadiene rubber into an internal mixer, mixing for 60 seconds, and then sequentially adding zinc oxide, stearic acid, an anti-aging agent RD, a flow aid KL608, carbon black and carbonyl iron powder according to the formula to carry out mixing for a period of time of 210 seconds, at the temperature of 110 ℃ and under the pressure of 12 MPa; performing two-stage mixing on the first-stage rubber compound, sulfur, an accelerator and an anti-coking agent on an open mill, wherein the two-stage mixing conditions comprise 180 seconds of time, 95 ℃ of temperature and 10MPa of pressure; tapping rubber for 3 times, packaging, rolling, discharging and standing for 8 hours;
pressing and magnetic field prefabrication: putting the mixed rubber material into a mold, heating the mold to 150 ℃, closing the mold and pressing, keeping the pressure at 12MPa for 5 seconds; and then putting the magnetic field into a parallel magnetic field for magnetic field prefabrication, wherein the magnetic field intensity is 0.8T, the time is 35 minutes, and the temperature is 90 ℃.
And (3) vulcanization: and (3) vulcanizing the prefabricated rubber compound and the die on a flat vulcanizing machine, wherein the vulcanizing temperature is 150 ℃, the vulcanizing time is 500s, and the pressure is 12 MPa. And cooling to room temperature, and taking out the railway fastener magnetorheological elastic base plate (the rigidity and the damping are shown in the table 1).
Example 2
95 parts of natural rubber; 5 parts of butadiene rubber; 30 parts of carbon black N550; 180 parts of carbonyl iron powder; 5 parts of zinc oxide; 1 part of stearic acid; 2 parts of an anti-aging agent RD; flow assistant KL608 in 3 weight portions; 1 part of accelerator CZ; 1 part of accelerator DTDM; 1 part of promoter TMTD; 2 parts of sulfur; 0.5 part of antiscorching agent CTP.
The mixing conditions in one section comprise: the temperature is 120 ℃, the time is 180s, and the pressure is 10 MPa; the conditions for the two-stage mixing include: the temperature is 100 ℃, the time is 160s, and the pressure is 10 MPa; the conditions for press molding include: the temperature is 180 ℃, the time is 1s, and the pressure is 9 MPa; the conditions for prefabrication of the magnetic field include: the time is 60min, the temperature is 100 ℃, and the magnetic field intensity is 1T; the vulcanization conditions include: the temperature is 145 ℃, 1200s and the pressure is 5 MPa.
Example 3
70 parts of natural rubber; 30 parts of butadiene rubber; 10 parts of carbon black N550; 50 parts of carbonyl iron powder; 3 parts of zinc oxide; 1 part of stearic acid; 1 part of an anti-aging agent RD; 1 part of a flow aid KL 608; 1 part of accelerator CZ; 0.5 part of accelerator DTDM; 0.2 part of promoter TMTD; 0.5 part of sulfur; 0.2 part of antiscorching agent CTP.
The mixing conditions in one section comprise: the temperature is 105 ℃, the time is 210s, and the pressure is 15 MPa; the conditions for the two-stage mixing include: the temperature is 90 ℃, the time is 200s, and the pressure is 15 MPa; and the conditions of press forming include: the temperature is 100 ℃, the time is 10s, and the pressure is 12 MPa; the conditions for prefabrication of the magnetic field include: the time is 60min, the temperature is 100 ℃, and the magnetic field intensity is 1T; the vulcanization conditions include: the temperature is 160 ℃, 400s and the pressure is 12 MPa.
Example 4
The procedure of example 1 was followed except that the carbonyl iron powder was present in an amount of 50 parts by weight.
Example 5
The process of example 1 was followed, except that no flow aid KL608 was added;
example 6
In contrast to example 1, the magnetic field preparation treatment was not performed, and vulcanization was performed directly after kneading.
Comparative example 1
The procedure of example 1 was followed except that carbonyl iron powder was not added.
TABLE 1
| Examples | Rigidity | Variable ratio | Damping ratio | Variable ratio |
| 1 | 56 | 50％ | 0.1 | 20％ |
| 2 | 78 | 35％ | 0.2 | 15％ |
| 3 | 50 | 15％ | 0.05 | 7％ |
| 4 | 52 | 8％ | 0.08 | 5％ |
| 5 | 59 | 40％ | 0.12 | 16％ |
| 6 | 55 | 20％ | 0.1 | 8％ |
| Comparative example 1 | 65 | 0％ | 0.15 | 0％ |
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including each of the specific features, are combined in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The track pad raw material composition is characterized by comprising a rubber matrix, magnetic powder, a filler, an inorganic assistant and a vulcanization assistant.
2. The composition of claim 1, wherein,
the composition comprises 80-120 parts by weight of a rubber matrix, 50-200 parts by weight of magnetic powder, 10-40 parts by weight of a filler, 6-12 parts by weight of an inorganic assistant and 1-5 parts by weight of a vulcanization assistant;
preferably, the first and second electrodes are formed of a metal,
the composition comprises 100-110 parts of rubber matrix, 180 parts of magnetic powder, 20-35 parts of filler, 6-10 parts of inorganic assistant and 1-3 parts of vulcanization assistant in parts by weight.
3. The composition of claim 1 or 2,
the rubber matrix is selected from natural rubber and/or butadiene rubber;
preferably, the rubber matrix comprises natural rubber and butadiene rubber at the same time, wherein the natural rubber accounts for 70-95% and the butadiene rubber accounts for 5-30% of 100% of the weight of the rubber matrix;
and/or
The magnetic powder is selected from one or more of carbonyl iron powder, iron sand, iron silicon powder and iron nickel powder;
preferably, the magnetic powder is selected from one or more of carbonyl iron powder and iron silicon powder;
and/or
The filler is selected from carbon materials and/or inorganic non-metallic materials,
preferably, the inorganic non-metallic material is selected from one or more of carbon black, white carbon black, graphite and argil,
preferably the carbon material is selected from carbon black N550;
and/or
The inorganic auxiliary agent is selected from one or more of zinc oxide, an anti-aging agent, a flow auxiliary agent and a scorch retarder;
the vulcanization auxiliary agent is selected from an accelerator and/or sulfur;
preferably, the vulcanization aid is selected from one or more of KL608, accelerator CZ, accelerator DTDM, accelerator TMTD and sulphur.
4. A composition according to any one of claims 1 to 3, which comprises:
70 to 95 parts of natural rubber; 5 to 30 portions of butadiene rubber; 10 to 40 parts of carbon black N550 and/or carbon black N220; carbonyl iron powder, 50 to 200 parts; 3-5 parts of zinc oxide; 1-2 parts of stearic acid; 1-2 parts of an anti-aging agent RD; flow aid KL608, 1-3 parts; 1-2 parts of promoter CZ; 0.5 to 1 portion of accelerator DTDM; 0.2 to 1 portion of promoter TMTD; 0.5 to 2 portions of sulfur; 0.2 to 0.5 portion of scorch retarder CTP;
preferably carbonyl iron powder, 150 to 180 parts.
5. A rail pad formed from a stock material comprising the composition of any one of claims 1-4;
preferably, the rigidity of the track backing plate is 50-80, the variable range of the rigidity is 10% -50%, the damping ratio is 0.05-0.2, and the variable range of the damping ratio is 5% -20%.
6. A process for producing a track slab, which comprises kneading, press-molding, magnetic field prefabrication and vulcanization of a raw material containing the composition as defined in any one of claims 1 to 4;
preferably the method comprises:
(1) putting a rubber matrix into an internal mixer;
(2) then adding magnetic powder, filler, flow promoter and anti-aging agent to carry out primary mixing;
(3) then adding an accelerator, a scorch retarder and sulfur for second-stage mulling;
(4) putting the mixed rubber material into a mould for compression molding;
(5) prefabricating the pressed product in a magnetic field under the action of the magnetic field;
(6) and vulcanizing the prefabricated product.
7. The manufacturing method according to claim 6, comprising:
(1) firstly, putting natural rubber plasticated rubber and butadiene rubber into an internal mixer for internal mixing;
(2) then zinc oxide, stearic acid, an anti-aging agent, a flow promoter, carbon black and carbonyl iron powder are sequentially added for first-stage mixing;
(3) then adding sulfur, an accelerator and a scorch retarder for second-stage mulling;
(4) putting the mixed rubber material into a mould for compression molding;
(5) prefabricating the pressed product in a magnetic field under the action of the magnetic field;
(6) and vulcanizing the prefabricated product.
8. The manufacturing method according to any one of claims 6 to 7,
the mixing conditions in the first stage of the step (2) comprise: the temperature is 105-120 ℃, the time is 180-210s, and the pressure is 10-15 MPa; and/or
The two-stage mixing condition in the step (3) comprises the following steps: the temperature is 90-100 ℃, the time is 160-200s, and the pressure is 10-15 MPa; and/or
The conditions of the step (4) of compression molding comprise: the temperature is 100-180 ℃, the time is 1-10s, and the pressure is 9-12 MPa; and/or
The magnetic field prefabricating condition in the step (5) comprises the following steps: the time is 10-60min, the temperature is 80-100 ℃, and the magnetic field intensity is 0.6-1T; and/or
The vulcanization condition in the step (6) comprises the following steps: the temperature is 145-160 ℃, 400-1200s and the pressure is 5-12 MPa.
9. The rail pad manufactured by the manufacturing method according to any one of claims 6 to 8, preferably, the rail pad has a rigidity of 50 to 80, a variable range of rigidity of 10 to 50%, a damping ratio of 0.05 to 0.2, and a variable range of damping ratio of 5 to 20%.
10. Use of a rail shim plate as claimed in claim 5 or claim 9 as an elastic shim for railway fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623314.3A CN114196077A (en) | 2021-12-28 | 2021-12-28 | Track pad raw material composition, track pad, manufacturing method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623314.3A CN114196077A (en) | 2021-12-28 | 2021-12-28 | Track pad raw material composition, track pad, manufacturing method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114196077A true CN114196077A (en) | 2022-03-18 |
Family
ID=80656914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111623314.3A Pending CN114196077A (en) | 2021-12-28 | 2021-12-28 | Track pad raw material composition, track pad, manufacturing method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114196077A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014077036A (en) * | 2012-10-09 | 2014-05-01 | Sumitomo Rubber Ind Ltd | Highly damping composition and vibration control damper |
| CN110344320A (en) * | 2019-07-12 | 2019-10-18 | 沈阳建筑大学 | A kind of magnetic rheology elastic body bridge pad |
| CN113150403A (en) * | 2021-04-30 | 2021-07-23 | 清华大学 | Magnetorheological rubber composition and preparation method thereof |
| CN113185756A (en) * | 2021-05-08 | 2021-07-30 | 清华大学 | Magnetic sensitive rubber composition and preparation method thereof |
-
2021
- 2021-12-28 CN CN202111623314.3A patent/CN114196077A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014077036A (en) * | 2012-10-09 | 2014-05-01 | Sumitomo Rubber Ind Ltd | Highly damping composition and vibration control damper |
| CN110344320A (en) * | 2019-07-12 | 2019-10-18 | 沈阳建筑大学 | A kind of magnetic rheology elastic body bridge pad |
| CN113150403A (en) * | 2021-04-30 | 2021-07-23 | 清华大学 | Magnetorheological rubber composition and preparation method thereof |
| CN113185756A (en) * | 2021-05-08 | 2021-07-30 | 清华大学 | Magnetic sensitive rubber composition and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| A. ALBERDI-MUNIAIN等: "Influence of carbon black and plasticisers on dynamic properties of isotropic magnetosensitive natural rubber" * |
| ISMAI,L NIN等: "Development of magnetorheological elastomers based on deproteinised natural rubber as smart damping materials" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101319061B (en) | Tire tread glue formulation adapted for various pavement conditions | |
| CN101659762B (en) | Creep-resisting and aging-resisting rubber tie plate under rail and preparation method thereof | |
| CN104031296B (en) | All-steel radial tyre belt cushion rubber composition and sizing material preparation technology | |
| CN104059260B (en) | A kind of high temperature resistant composite function brake shoe and production method thereof | |
| CN107722379B (en) | All-steel radial tire combined rubber material for improving shoulder space and crown space | |
| DE102015207453B4 (en) | Runflat tires | |
| CN111607136A (en) | All-steel radial tire base rubber formula and preparation method thereof | |
| CN101538378A (en) | All-steel tire tread synthetic adhesive with high abrasion | |
| CN101381485A (en) | Rubber backing plate of passenger dedicated line | |
| CN102134397A (en) | Synthetic brake shoe for urban railway vehicle and preparation method thereof | |
| CN102924831A (en) | Micropore rubber pad and manufacture process thereof | |
| CN114196077A (en) | Track pad raw material composition, track pad, manufacturing method and application thereof | |
| CN102295789A (en) | Tread rubber for all-steel tyre | |
| CN109737157B (en) | Ultralow friction composite brake shoe for European freight car | |
| CN104725681A (en) | Composition as well as metro composition brake shoe and preparation method thereof | |
| CN109723740B (en) | High-temperature-resistant synthetic brake pad and preparation method thereof | |
| JP2003213044A (en) | Tread rubber for tire | |
| CN111594561A (en) | Environment-friendly composite brake shoe material and brake shoe manufacturing method | |
| CN113929978B (en) | Solid aviation tire lower tread rubber and preparation method thereof | |
| CN108503902A (en) | A kind of graphene modified rubber backing plate and preparation method thereof | |
| CN101718321A (en) | Brake shoe production method, brake shoe, friction piece and applications thereof | |
| CN102352073B (en) | Elastic shim plate material for steel rail fastener | |
| CN107033417A (en) | Graphene modified rubber backing plate and its application | |
| KR102447928B1 (en) | Elastomer composition for track shoe bodies having improved properties in heat resistance | |
| CN117683285B (en) | Oil-resistant high-dimensional-precision turnout rubber backing plate and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |