CN107722381A - A kind of damping pad for rail rubber composite and preparation method thereof - Google Patents
A kind of damping pad for rail rubber composite and preparation method thereof Download PDFInfo
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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Abstract
The invention discloses a kind of damping pad for rail rubber composite and preparation method thereof, the damping pad for rail includes the raw material of following mass fraction with rubber composite：0.5~2 part of 70~100 parts of natural rubber, 0~30 part of isoprene rubber, 0~20 part of butadiene rubber, 3~5 parts of zinc oxide, 0.5~1.5 part of stearic acid, 1~3 part of age resistor, 5~30 parts of carbon black, 0~15 part of white carbon, 0~2 part of silane coupler, 20~60 parts of filler, 0~30 part of plasticizer, 0~5 part of foaming agent, 1~3 part of accelerator and crosslinking agent.Damping pad for rail rubber composite provided by the invention has the performance such as good intensity, resistance to permanent deformation, ageing-resistant, water-fast, resistance to ozone, endurance, the cushion blocking prepared using above-mentioned rubber composite has good sound rigidity property, it can effectively absorb and reduce noise caused by track and vibration, alleviate the weight of cushion blocking, material cost is reduced, is easy to carry and installs.
Description
Technical field
The present invention relates to track vibration-reducing technical field, more particularly to a kind of damping pad for rail rubber composite and its system
Preparation Method.
Background technology
China is currently in the stage that quickly propels of new Development of China's Urbanization, and modern city urban rail transit construction enters fast
Violent developing period.More and more faster, its band with dense degree more and more higher, the desin speed of modern city urban rail transit construction
The vibration come and noise problem can generate large effect to the people along track and building, therefore there is an urgent need to provide
A kind of good vibration insulating system carrys out the stable operation of orbit keeping traffic.
Track traffic can reduce mechanical oscillation to greatest extent with rubber damper and weaken mechanicalness noise, be city rail
Important damping means in transport development, it is widely used in below the rail of urban transportation track.In order to ensure track traffic
With the permanently effective use of rubber damper, it is necessary to which developing a kind of existing favorable elasticity has obvious viscoelastic hysteresis effect again
Rubber composite, can vibrate caused by transmission system rapidly, at the same can in the deformation process of cushion blocking consumed energy.
The content of the invention
To solve the above problems, the present invention provides a kind of damping pad for rail rubber composite and preparation method thereof, extremely
Small part solves above-mentioned technical problem.
Therefore, the present invention provides a kind of damping pad for rail rubber composite, include the raw material of following mass fraction：My god
70~100 parts of T PNR, 0~30 part of isoprene rubber, 0~20 part of butadiene rubber, 3~5 parts of zinc oxide, stearic acid 0.5~1.5
Part, 1~3 part of age resistor, 5~30 parts of carbon black, 0~15 part of white carbon, 0~2 part of silane coupler, 20~60 parts of filler, increase
Mould 0.5~2 part of 0~30 part of agent, 0~5 part of foaming agent, 1~3 part of accelerator and crosslinking agent.
Optionally, the raw material of following mass fraction is included：It is 100 parts of natural rubber, 3 parts of zinc oxide, 1 part of stearic acid, anti-old
2 parts of agent, 15 parts of carbon black, 5 parts of white carbon, 0.25 part of silane coupler, 50 parts of filler, 20 parts of plasticizer, 2 parts of accelerator and
1 part of crosslinking agent.
Optionally, the raw material of following mass fraction is included：It is 100 parts of natural rubber, 5 parts of zinc oxide, 1.5 parts of stearic acid, anti-
Old 2 parts of agent, 15 parts of carbon black, 10 parts of white carbon, 0.5 part of silane coupler, 60 parts of filler, 30 parts of plasticizer, 2 parts of foaming agent,
1 part of 2.2 parts of accelerator and crosslinking agent.
Optionally, the raw material of following mass fraction is included：It is 80 parts of natural rubber, 20 parts of isoprene rubber, 3 parts of zinc oxide, hard
0.5 part of resin acid, 2 parts of age resistor, 15 parts of carbon black, 5 parts of white carbon, 0.25 part of silane coupler, 30 parts of filler, plasticizer 15
0.5 part of part, 2.2 parts of accelerator and crosslinking agent.
Optionally, the raw material of following mass fraction is included：It is 85 parts of natural rubber, 15 parts of butadiene rubber, 5 parts of zinc oxide, hard
1 part of resin acid, 2 parts of age resistor, 15 parts of carbon black, 5 parts of white carbon, 0.25 part of silane coupler, 30 parts of filler, 10 parts of plasticizer,
0.5 part of 1.8 parts of accelerator and crosslinking agent.
Optionally, the natural rubber include standard rubber, smoke sheet rubber and Zou's piece glue at least one of, the age resistor
At least one of including amines antioxidants, ketone amines antioxidants, p phenylenediamine type antioxidant and imidazoles age resistor.
Optionally, the carbon black includes super abrasive carbon black, intermediate super abrasion furnace black, high wear-resistant carbon black, fast extrude in carbon black, half benefit
At least one of strong carbon black and middle medium thermal carbon blacks, the white carbon includes precipitated silica and vapor phase method hard charcoal
At least one of black.
Optionally, it is even to include alkyl silane coupling agent, vinyl silicane coupling agent, acryloxy for the silane coupler
Join agent and silane coupler containing sulfur at least one of, the filler is included among tripoli, diatomite and kaolin extremely
Few one kind, the plasticizer include naphthenic oil, aromatic naphtha and machine oil at least one of.
Optionally, the foaming agent include inorganic foaming agent, organic foaming agent and physical blowing agent at least one of,
The accelerator includes thiazole accelerator, sulfenamide type accelerators, thiurams and dithiocarbamates and promoted
At least one of agent, the crosslinking agent is sulphur.
The present invention also provides a kind of preparation method of any of the above-described damping pad for rail rubber composite, including：
Natural rubber, isoprene rubber and butadiene rubber are plasticated respectively using banbury；
Natural rubber, isoprene rubber and the butadiene rubber input after plasticating proportionally are weighed according to above-mentioned mass fraction
The banbury prepares rubber master batch；
After parking 3~4 hours, rubber master batch, zinc oxide, stearic acid, anti-is proportionally weighed according to above-mentioned mass fraction
Old agent, carbon black, white carbon, silane coupler, filler and plasticizer put into the banbury and are kneaded, and melting temperature is
110~115 DEG C, mixing time is 10~15min；
Dumping is carried out after well mixed；
Elastomeric compound after banburying is turned refining in the two-roll mill of cooling；
Elastomeric compound temperature be less than 60 DEG C after, add proportionally weighed according to above-mentioned mass fraction foaming agent,
Accelerator and crosslinking agent are kneaded, and the temperature of the two-roll mill is 60~70 DEG C, and mixing time is 3~6min；
Slice, sampling, vulcanization and test are carried out after being kneaded uniformly.
The present invention has following beneficial effects：
Among damping pad for rail rubber composite provided by the invention and preparation method thereof, the damping pad for rail is used
Rubber composite includes the raw material of following mass fraction：70~100 parts of natural rubber, 0~30 part of isoprene rubber, butadiene rubber
0~20 part, 3~5 parts of zinc oxide, 0.5~1.5 part of stearic acid, 1~3 part of age resistor, 5~30 parts of carbon black, 0~15 part of white carbon,
0~2 part of silane coupler, 20~60 parts of filler, 0~30 part of plasticizer, 0~5 part of foaming agent, 1~3 part of accelerator and friendship
Join 0.5~2 part of agent.Damping pad for rail rubber composite provided by the invention has good intensity, resistance to permanent deformation, resistance to
The performance such as aging, water-fast, resistance to ozone, endurance, the cushion blocking prepared using above-mentioned damping pad for rail with rubber composite are had
There is good sound rigidity property, can effectively absorb and reduce noise caused by track and vibration, noise-and-vibration-reduction positive effect,
So as to ensure train safety, smoothly operation.
Brief description of the drawings
Fig. 1 is a kind of flow of the preparation method for damping pad for rail rubber composite that the embodiment of the present invention two provides
Figure.
Embodiment
To make those skilled in the art more fully understand technical scheme, the present invention is carried below in conjunction with the accompanying drawings
For damping pad for rail rubber composite and preparation method thereof be described in detail.
Embodiment one
The present embodiment provides a kind of damping pad for rail rubber composite, includes the raw material of following mass fraction：Naturally
70~100 parts of rubber, 0~30 part of isoprene rubber, 0~20 part of butadiene rubber, 3~5 parts of zinc oxide, 0.5~1.5 part of stearic acid,
1~3 part of age resistor, 5~30 parts of carbon black, 0~15 part of white carbon, 0~2 part of silane coupler, 20~60 parts of filler, plasticizer
0.5~2 part of 0~30 part, 0~5 part of foaming agent, 1~3 part of accelerator and crosslinking agent.The damping pad for rail that the present embodiment provides
There is the performance such as good intensity, resistance to permanent deformation, ageing-resistant, water-fast, resistance to ozone, endurance with rubber composite, use
Cushion blocking prepared by above-mentioned damping pad for rail rubber composite has good sound rigidity property, can effectively absorb and
Reduce noise and vibration caused by track, noise-and-vibration-reduction positive effect, so as to ensure train safety, smoothly operation.
In the present embodiment, the natural rubber include standard rubber, smoke sheet rubber and Zou's piece glue at least one of, it is described anti-
Old agent include amines antioxidants, ketone amines antioxidants, p phenylenediamine type antioxidant and imidazoles age resistor at least one of.
The carbon black includes super abrasive carbon black, intermediate super abrasion furnace black, high wear-resistant carbon black, fast extrude in carbon black, semi-reinforcing hydrocarbon black and middle particle
At least one of thermals.Preferably, among the white carbon is including precipitated silica and fume colloidal silica
At least one.The silane coupler includes alkyl silane coupling agent, vinyl silicane coupling agent, acryloxy coupling agent
With silane coupler containing sulfur at least one of.Among practice, the rubber composite prepared using above-mentioned formula is had
The performance such as good intensity, resistance to permanent deformation, ageing-resistant, water-fast, resistance to ozone, endurance, using above-mentioned rubber composite system
Standby cushion blocking has excellent Static stiffness, dynamic stiffness and springrate ratio performance, and noise-and-vibration-reduction positive effect can be effective
Ensure train safety, smoothly operation.
In the present embodiment, the filler include tripoli, diatomite and kaolin at least one of, the plasticizer
At least one of including naphthenic oil, aromatic naphtha and machine oil, the foaming agent includes inorganic foaming agent, organic foaming agent and thing
Get a haircut infusion at least one of, the accelerator include thiazole accelerator, sulfenamide type accelerators, thiurams and
At least one of dithiocarbamate accelerator, the crosslinking agent is sulphur.Track manufactured in the present embodiment subtracts
The pad rubber composite that shakes has excellent performance, and the wherein hardness of composite is 40~50 degree (shore A), tensile strength
It is that 550~700%, 70 DEG C × 24h compression sets are 15~25%, impact rebound degree for 18~26MPa, elongation at break
For 55~65%.The damping pad for rail rubber composite that the present embodiment provides has good intensity, resistance to permanent deformation, resistance to
The performance such as aging, water-fast, resistance to ozone, endurance, the cushion blocking prepared using above-mentioned damping pad for rail with rubber composite are had
There is good sound rigidity property, can effectively absorb and reduce noise caused by track and vibration, noise-and-vibration-reduction positive effect,
So as to ensure train safety, smoothly operation.
The damping pad for rail provided below by experiment the present embodiment is verified with the performance of rubber composite：
Experiment 1
The damping pad for rail that experiment 1 provides includes the raw material of following mass fraction with rubber composite：Natural rubber 100
Part, 3 parts of zinc oxide, 1 part of stearic acid, 2 parts of age resistor, 15 parts of carbon black, 5 parts of white carbon, 0.25 part of silane coupler, filler 50
1 part of part, 20 parts of plasticizer, 2 parts of accelerator and crosslinking agent.Specific component and mass fraction are as follows：
Experiment 2
The damping pad for rail that experiment 2 provides includes the raw material of following mass fraction with rubber composite：Natural rubber 100
Part, 5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of age resistor, 15 parts of carbon black, 10 parts of white carbon, 0.5 part of silane coupler, filler
1 part of 60 parts, 30 parts of plasticizer, 2 parts of foaming agent, 2.2 parts of accelerator and crosslinking agent.Specific component and mass fraction are as follows：
Experiment 3
The damping pad for rail that experiment 3 provides includes the raw material of following mass fraction with rubber composite：Natural rubber 80
Part, 20 parts of isoprene rubber, 3 parts of zinc oxide, 0.5 part of stearic acid, 2 parts of age resistor, 15 parts of carbon black, 5 parts of white carbon, silane coupler
0.5 part of 0.25 part, 30 parts of filler, 15 parts of plasticizer, 2.2 parts of accelerator and crosslinking agent.Specific component and mass fraction
It is as follows：
Embodiment 4
The damping pad for rail that experiment 4 provides includes the raw material of following mass fraction with rubber composite：Natural rubber 85
Part, 15 parts of butadiene rubber, 5 parts of zinc oxide, 1 part of stearic acid, 2 parts of age resistor, 15 parts of carbon black, 5 parts of white carbon, silane coupler
0.5 part of 0.25 part, 30 parts of filler, 10 parts of plasticizer, 1.8 parts of accelerator and crosslinking agent.Specific component and mass fraction
It is as follows：
The damping pad for rail prepared to above-mentioned experiment is tested with rubber composite according to national standard, the performance number of test
According to as shown in the table：
The test performance of table 1, various rubber composites
As can be seen from the above Table 1, the damping pad for rail that the present embodiment provides has well strong with rubber composite
The performance such as degree, resistance to permanent deformation, ageing-resistant, water-fast, resistance to ozone, endurance, using above-mentioned damping pad for rail with rubber combined material
Cushion blocking prepared by material has good sound rigidity property, can effectively absorb and reduce noise caused by track and vibration,
Noise-and-vibration-reduction positive effect, so as to ensure train safety, smoothly operation.
Among damping pad for rail rubber composite that the present embodiment provides and preparation method thereof, the damping pad for rail
Include the raw material of following mass fraction with rubber composite：70~100 parts of natural rubber, 0~30 part of isoprene rubber, suitable fourth rubber
0~20 part of glue, 3~5 parts of zinc oxide, 0.5~1.5 part of stearic acid, 1~3 part of age resistor, 5~30 parts of carbon black, white carbon 0~15
Part, 0~2 part of silane coupler, 20~60 parts of filler, 0~30 part of plasticizer, 0~5 part of foaming agent, 1~3 part of accelerator with
And 0.5~2 part of crosslinking agent.The damping pad for rail rubber composite that the present embodiment provides has good intensity, resisted forever
The performance such as deformation, ageing-resistant, water-fast, resistance to ozone, endurance, use prepared by above-mentioned damping pad for rail rubber composite to subtract
The pad that shakes has good sound rigidity property, can effectively absorb and reduce noise caused by track and vibration, noise-and-vibration-reduction effect
Fruit is obvious, so as to ensure train safety, smoothly operation.
Embodiment two
The present embodiment provides a kind of preparation method of damping pad for rail rubber composite, wherein the damping pad for rail
It is the damping pad for rail rubber composite that embodiment one provides with rubber composite.Answered for damping pad for rail with rubber
The specific descriptions of condensation material, refer to embodiment one.
Fig. 1 is a kind of flow of the preparation method for damping pad for rail rubber composite that the embodiment of the present invention two provides
Figure.As shown in figure 1, the preparation method that the present embodiment provides includes：
Step 1001, using banbury natural rubber, isoprene rubber and butadiene rubber are plasticated respectively.
Step 1002, proportionally weigh according to above-mentioned mass fraction natural rubber after plasticating, isoprene rubber and suitable
Buna puts into the banbury and prepares rubber master batch.
Step 1003, after parking 3~4 hours, according to above-mentioned mass fraction proportionally weigh rubber master batch, zinc oxide,
Stearic acid, age resistor, carbon black, white carbon, silane coupler, filler and plasticizer put into the banbury and are kneaded, and mix
It is 110~115 DEG C to refine temperature, and mixing time is 10~15min.
Step 1004, well mixed progress dumping afterwards.
Step 1005, the elastomeric compound after banburying turned refining in the two-roll mill of cooling.
Step 1006, elastomeric compound temperature be less than 60 DEG C after, add and proportionally weighed according to above-mentioned mass fraction
Foaming agent, accelerator and crosslinking agent be kneaded, the temperature of the two-roll mill is 60~70 DEG C, mixing time is 3~
6min。
Step 1007, carry out slice, sampling, vulcanization and test after being kneaded uniformly.
The preparation method for the damping pad for rail rubber composite that the present embodiment provides includes two big steps：Banburying
With add small powder.Specifically, (1) banburying：First natural rubber, isoprene rubber and butadiene rubber are moulded respectively with banbury
Refining, then proportionally weigh natural rubber, isoprene rubber and butadiene rubber input banbury and carry out rubber master batch preparation, park 4
After hour, weigh respective quality than rubber master batch, zinc oxide, stearic acid, age resistor, carbon black, white carbon, silane coupler, fill out
Fill agent, plasticizer input banbury among be kneaded, melting temperature be 115 DEG C, mixing time 10min, be well mixed it
After carry out dumping；(2) small powder is added：Elastomeric compound after banburying is turned refining in the two-roll mill of cooling, in elastomeric compound
Temperature be less than 60 DEG C after, add weigh after foaming agent, accelerator and crosslinking agent be kneaded, the temperature of mill is
65~70 DEG C, mixing time 3min, slice, sampling, vulcanization and test are carried out after being kneaded uniformly.
Among damping pad for rail rubber composite that the present embodiment provides and preparation method thereof, the damping pad for rail
Include the raw material of following mass fraction with rubber composite：70~100 parts of natural rubber, 0~30 part of isoprene rubber, suitable fourth rubber
0~20 part of glue, 3~5 parts of zinc oxide, 0.5~1.5 part of stearic acid, 1~3 part of age resistor, 5~30 parts of carbon black, white carbon 0~15
Part, 0~2 part of silane coupler, 20~60 parts of filler, 0~30 part of plasticizer, 0~5 part of foaming agent, 1~3 part of accelerator with
And 0.5~2 part of crosslinking agent.The damping pad for rail rubber composite that the present embodiment provides has good intensity, resisted forever
The performance such as deformation, ageing-resistant, water-fast, resistance to ozone, endurance, use prepared by above-mentioned damping pad for rail rubber composite to subtract
The pad that shakes has good sound rigidity property, can effectively absorb and reduce noise caused by track and vibration, noise-and-vibration-reduction effect
Fruit is obvious, so as to ensure train safety, smoothly operation.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of damping pad for rail rubber composite, it is characterised in that include the raw material of following mass fraction：Natural rubber
70~100 parts, it is 0~30 part of isoprene rubber, 0~20 part of butadiene rubber, 3~5 parts of zinc oxide, 0.5~1.5 part of stearic acid, anti-old
1~3 part of agent, 5~30 parts of carbon black, 0~15 part of white carbon, 0~2 part of silane coupler, 20~60 parts of filler, plasticizer 0~
0.5~2 part of 30 parts, 0~5 part of foaming agent, 1~3 part of accelerator and crosslinking agent.
2. damping pad for rail rubber composite according to claim 1, it is characterised in that including following mass fraction
Raw material：100 parts of natural rubber, 3 parts of zinc oxide, 1 part of stearic acid, 2 parts of age resistor, 15 parts of carbon black, 5 parts of white carbon, silane are even
Join 1 part of 0.25 part of agent, 50 parts of filler, 20 parts of plasticizer, 2 parts of accelerator and crosslinking agent.
3. damping pad for rail rubber composite according to claim 1, it is characterised in that including following mass fraction
Raw material：100 parts of natural rubber, 5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of age resistor, 15 parts of carbon black, 10 parts of white carbon, silane
1 part of 0.5 part of coupling agent, 60 parts of filler, 30 parts of plasticizer, 2 parts of foaming agent, 2.2 parts of accelerator and crosslinking agent.
4. damping pad for rail rubber composite according to claim 1, it is characterised in that including following mass fraction
Raw material：It is 80 parts of natural rubber, 20 parts of isoprene rubber, 3 parts of zinc oxide, 0.5 part of stearic acid, 2 parts of age resistor, 15 parts of carbon black, white
0.5 part of 5 parts of carbon black, 0.25 part of silane coupler, 30 parts of filler, 15 parts of plasticizer, 2.2 parts of accelerator and crosslinking agent.
5. damping pad for rail rubber composite according to claim 1, it is characterised in that including following mass fraction
Raw material：85 parts of natural rubber, 15 parts of butadiene rubber, 5 parts of zinc oxide, 1 part of stearic acid, 2 parts of age resistor, 15 parts of carbon black, hard charcoal
0.5 part of black 5 parts, 0.25 part of silane coupler, 30 parts of filler, 10 parts of plasticizer, 1.8 parts of accelerator and crosslinking agent.
6. damping pad for rail rubber composite according to claim 1, it is characterised in that the natural rubber includes
Standard rubber, smoke sheet rubber and Zou's piece glue at least one of, the age resistor includes amines antioxidants, ketone amines antioxidants, right
At least one of phenylenediamine age resistor and imidazoles age resistor.
7. damping pad for rail rubber composite according to claim 1, it is characterised in that the carbon black includes super resistance to
Among mill carbon black, intermediate super abrasion furnace black, high wear-resistant carbon black, fast extrude in carbon black, semi-reinforcing hydrocarbon black and middle medium thermal carbon blacks
At least one, the white carbon include precipitated silica and fume colloidal silica at least one of.
8. damping pad for rail rubber composite according to claim 1, it is characterised in that the silane coupler bag
Include among alkyl silane coupling agent, vinyl silicane coupling agent, acryloxy coupling agent and silane coupler containing sulfur at least
One kind, the filler include tripoli, diatomite and kaolin at least one of, the plasticizer includes naphthenic oil, virtue
At least one of hydrocarbon ils and machine oil.
9. damping pad for rail rubber composite according to claim 1, it is characterised in that the foaming agent includes nothing
Machine foaming agent, organic foaming agent and physical blowing agent at least one of, the accelerator includes thiazole accelerator, secondary sulphur
Amide-type accelerator, thiurams and dithiocarbamate accelerator at least one of, the crosslinking agent is sulphur
Sulphur.
10. a kind of preparation method of damping pad for rail rubber composite according to any one of claims 1 to 9, it is special
Sign is, including：
Natural rubber, isoprene rubber and butadiene rubber are plasticated respectively using banbury；
According to above-mentioned mass fraction proportionally weighs natural rubber after plasticating, isoprene rubber and butadiene rubber input
Banbury prepares rubber master batch；
After parking 3~4 hours, according to above-mentioned mass fraction proportionally weigh rubber master batch, zinc oxide, stearic acid, age resistor,
Carbon black, white carbon, silane coupler, filler and plasticizer put into the banbury and are kneaded, and melting temperature is 110~
115 DEG C, mixing time is 10~15min；
Dumping is carried out after well mixed；
Elastomeric compound after banburying is turned refining in the two-roll mill of cooling；
After the temperature of elastomeric compound is less than 60 DEG C, adds the foaming agent proportionally weighed according to above-mentioned mass fraction, promote
Agent and crosslinking agent are kneaded, and the temperature of the two-roll mill is 60~70 DEG C, and mixing time is 3~6min；
Slice, sampling, vulcanization and test are carried out after being kneaded uniformly.
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| CN108676206A (en) * | 2018-05-21 | 2018-10-19 | 童述藩 | A kind of heat, power change modified enhancing rubber railway rail pad and preparation process |
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| CN110396227A (en) * | 2019-08-13 | 2019-11-01 | 广西科技大学鹿山学院 | The preparation method of fatigue-resisting rubber |
| CN111718525A (en) * | 2020-07-27 | 2020-09-29 | 杭州静之源噪声控制技术有限公司 | Vibration damping rubber material and preparation method thereof |
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| CN109280235A (en) * | 2018-08-16 | 2019-01-29 | 四川川鼎轨道技术有限公司 | A kind of steel rail web flexible rubber coating member and preparation method thereof |
| CN109555292A (en) * | 2018-10-30 | 2019-04-02 | 常州浩瀚万康纳米材料有限公司 | A kind of improvement floor crashing sound insulation cushion blocking and preparation method thereof |
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| CN113087979A (en) * | 2021-04-08 | 2021-07-09 | 青岛博锐智远减振科技有限公司 | Rubber composition for flame-retardant protective layer of vibration-damping product of railway vehicle and banburying process of rubber composition |
| CN117801392A (en) * | 2024-03-01 | 2024-04-02 | 中裕铁信交通科技股份有限公司 | Rubber shock pad for tunnel lining and preparation method and application thereof |
| CN117801392B (en) * | 2024-03-01 | 2024-05-14 | 中裕铁信交通科技股份有限公司 | Rubber shock pad for tunnel lining and preparation method and application thereof |
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Application publication date: 20180223 |