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A kind of track rubber pad material and preparation method thereof

A technology of rubber pads and rails, applied in the field of rail transportation, can solve the problems of low damping coefficient, i.e. low loss factor, and regulations on damping performance of rubber pads, and achieve the effect of excellent damping performance

Active Publication Date: 2022-07-29
铁科腾跃科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rubber backing plate is a kind of vibration reduction device that uses rubber elasticity and damping energy dissipation to achieve the purpose of vibration reduction. Its shock absorption effect is closely related to the damping performance of rubber; The damping performance of the board is specified; on the other hand, the damping characteristic depends on the molecular structure of the rubber. The main rubber of the rubber backing plate is one or two of natural rubber, butadiene rubber and styrene-butadiene rubber, all of which are non-polar Rubber, which has a low damping coefficient (tan δ), has limited ability to reduce track vibration and noise

Method used

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  • A kind of track rubber pad material and preparation method thereof
  • A kind of track rubber pad material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A rail rubber pad material, which is composed of the following raw material ratios (in parts by weight): 90 parts of nitrile rubber, 10 parts of the organic polymer prepared in Example 1, 5 parts of zinc oxide, 1.5 parts of stearic acid, and carbon black 30 parts, 20 parts of light calcium carbonate, 30 parts of Sabofi, 10 parts of white carbon black, 5 parts of paraffin oil, 2 parts of protective wax, 1 part of antioxidant RD, 1 part of antioxidant 4010NA, 1 part of antioxidant 4020, dispersed 2 parts of PEG4000, 1.4 parts of sulfur, 1.3 parts of accelerator CZ, 0.3 part of accelerator TMTD, 0.8 part of accelerator DM, 0.5 part of anti-scorch agent CTP, and 5 parts of calcium oxide.

[0033] The organic polymer is prepared by the following method:

[0034] Add isocyanate and 2,2'-methylene bis(4-methyl-6-tert-butylphenol) into a four-necked flask with a mechanical stirring bar and a thermometer in a molar ratio of 2:1, and add 0.02% Dibutyltin dilaurate, heat up to 95...

Embodiment 3

[0042] Example 3 Track rubber pad material

[0043] A rail rubber backing plate material, which is composed of the following raw material ratios (in parts by weight): 85 parts of nitrile rubber, 15 parts of the organic polymer prepared in Example 1, 5 parts of zinc oxide, 2 parts of stearic acid, and carbon black 35 parts, 20 parts of light calcium carbonate, 40 parts of Sabofi, 10 parts of white carbon black, 6 parts of paraffin oil, 3 parts of protective wax, 1 part of antioxidant RD, 1 part of antioxidant 4010NA, 1 part of antioxidant 4020, dispersed 1 part of PEG4000, 1.2 part of sulfur, 1.5 part of accelerator CZ, 0.4 part of accelerator TMTD, 0.6 part of accelerator DM, 0.5 part of anti-scorch agent CTP, and 5 parts of calcium oxide.

[0044] The organic polymer is prepared by the following method:

[0045] Add isocyanate and 2,2'-methylene bis(4-methyl-6-tert-butylphenol) into a four-necked flask with a mechanical stirring bar and a thermometer in a molar ratio of 2:1,...

Embodiment 4

[0054] A rail rubber pad material, which is composed of the following raw material ratios (in parts by weight): 95 parts of nitrile rubber, 5 parts of the organic polymer prepared in Example 1, 5 parts of zinc oxide, 2 parts of stearic acid, and carbon black 35 parts, 20 parts of light calcium carbonate, 40 parts of Sabofi, 10 parts of white carbon black, 6 parts of paraffin oil, 3 parts of protective wax, 1 part of antioxidant RD, 1 part of antioxidant 4010NA, 1 part of antioxidant 4020, dispersed 1 part of PEG4000, 1.2 part of sulfur, 1.5 part of accelerator CZ, 0.4 part of accelerator TMTD, 0.6 part of accelerator DM, 0.5 part of anti-scorch agent CTP, and 5 parts of calcium oxide.

[0055] The organic polymer is prepared by the following method:

[0056] Add isocyanate and 2,2'-methylene bis(4-methyl-6-tert-butylphenol) into a four-necked flask with a mechanical stirring bar and a thermometer in a molar ratio of 2:1, and add 0.02% Dibutyltin dilaurate, heat up to 95°C, st...

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Abstract

The present invention and a track rubber pad material and its preparation method include the following raw material components in parts by weight: 85-95 parts of nitrile rubber, 60-120 parts of filling and reinforcing agent, and 5.5-12 parts of vulcanization active agent 3~10 parts of antioxidant, 4~8 parts of plasticizer, 1~3 parts of vulcanizing agent, 2~4 parts of vulcanization accelerator, 0.5~2 parts of anti-scorch agent, 5~15 parts of calcium oxide, 1 part of dispersant ~5 parts, 5-15 parts of organic polymer, the track rubber backing plate material provided by the present invention is added with 2,2'-methylenebis-(4-methyl-6-tert-butylene) in nitrile rubber phenol) end-capped organic polymer, and cooperate with various additives to prepare a rubber pad with excellent damping performance and meet the physical and mechanical properties of the track pad, which significantly improves the rail vibration and noise reduction. ability.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a rail rubber pad material and a preparation method thereof. Background technique [0002] With the rapid development of rail transit, a large number of rail transit vibration and noise reduction schemes have been applied. Among them, in order to attenuate the load transmitted by the wheel-rail impact to the track structure, reduce the vibration response of the track structure, and weaken the vibration and noise of the surrounding building structures caused by the operation of the train, the most widely used technical solution is to set between the rail and the sleeper. Rubber pads are used to cushion the high-speed vibration and shock generated by vehicles passing through the rails, thereby protecting the roadbed and sleepers. As the main source of rail elasticity and damping, the material and structural properties of rubber backing plate affect the vibration response of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L75/14C08L71/02C08K7/26C08K3/26C08K3/04C08K3/22C08K13/04C08K5/47C08K5/40C08G18/32C08G18/69
CPCC08L9/02C08G18/3215C08G18/698C08K2003/2296C08K2003/265C08K2003/2206C08L75/14C08L71/02C08K7/26C08K3/26C08K3/04C08K3/22C08K13/04C08K5/47C08K5/40
Inventor 周尧杨富民王洋超赵东阳刘彦光张鹏瑶刘晓煌曹建伟张晟
Owner 铁科腾跃科技有限公司
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