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Elastic backing board for vibration absorption for railway tracks and manufacturing method of elastic backing board

A technology of elastic backing plate and railway track, which is applied in the field of rubber shock-absorbing products, can solve the problems of failing to meet the test standards of fatigue performance, and achieve the effects of easy control of the manufacturing process, improvement of track elasticity, and reasonable price

Active Publication Date: 2012-08-01
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Chinese Invention Patent Publication CN101220184A uses EPDM rubber as the main material to make the backing plate with small compression set, but the static stiffness and fatigue performance are tested according to Q / 71309802-8, especially the fatigue performance only requires the appearance after the test No tearing, peeling, not up to the fatigue performance test standard in the "Interim Technical Conditions for Passenger Dedicated Line Fastener System"

Method used

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  • Elastic backing board for vibration absorption for railway tracks and manufacturing method of elastic backing board
  • Elastic backing board for vibration absorption for railway tracks and manufacturing method of elastic backing board
  • Elastic backing board for vibration absorption for railway tracks and manufacturing method of elastic backing board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Methyl vinyl silicone rubber: 100 parts; reinforcing agent fumed silica 2#: 25 parts; structure control agent diphenylsilanediol: 1 part; vulcanizing agent dicumyl peroxide (DCP): 1 part .

[0045] The production process is as follows:

[0046] (1) Batching: batching is carried out according to the raw material formula.

[0047] (2) Internal mixer mixing: set the temperature of the internal mixing room to 90°C, first add raw rubber and structure control agent, and internally mix for (3-4) minutes, then add half of the reinforcing agent, and pressurize internally. (9-10) min, then add the other half of the reinforcing agent, pressurize and banbury (9-10) min, and discharge to obtain the mixed rubber.

[0048] (3) Mixing in the open mill: adjust the roll distance of the open mill to (0.5-1) mm, thinly pass the compound rubber 2 times, adjust the roll distance to (3-5) mm, and release the sheet.

[0049] (4) Heat treatment of the mixed rubber: place the mixed rubber in ...

Embodiment 2

[0054] Methyl vinyl phenyl silicone rubber: 100 parts; Reinforcing agent fumed silica 4#: 30 parts; Structure control agent diphenylsilanediol: 2.5 parts; Vulcanizing agent 2,5-dimethyl-2, 5-di-tert-butylperoxyhexane (bis 2,5): 0.5 parts. The manufacturing process is the same as in Example 1.

Embodiment 3

[0056] Methyl vinyl phenyl silicone rubber: 100 parts; reinforcing agent precipitated silica: 35 parts; structure control agent hydroxy silicone oil: 3 parts; vulcanizing agent benzoyl peroxide (BP for short): 1.5 parts.

[0057] The production process is as follows:

[0058] (1) Batching: batching is carried out according to the raw material formula.

[0059] (2) Internal mixer mixing: set the temperature of the internal mixing room to 90°C, first add raw rubber and structure control agent, and mix for (3-4) minutes, then add half of the reinforcing agent, and pressurize internal mixing (9-10) min, then add the other half of the reinforcing agent, pressurize and banbury (9-10) min, and discharge to obtain the mixed rubber.

[0060] (3) Mixing in the open mill: adjust the roll distance of the open mill to (0.5-1) mm, thinly pass the compound rubber 2 times, adjust the roll distance to (3-5) mm, and release the sheet.

[0061] (4) Add vulcanizing agent: place the heat-treated...

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Abstract

The invention relates to an elastic backing board for vibration absorption for railway tracks and a manufacturing method of the elastic backing board. The elastic backing board comprises the following raw materials by weight: 100 parts of silicone rubber, 25 to 70 parts of reinforcing agent, 1 to 6 parts of structure control agent, and 0.5 to 3 parts of vulcanizing agent. According to the invention, the silicone rubber with excellent elasticity is adopted as the main material, and the rubber backing board with an excellent fatigue property and lower static rigidity is prepared through the processing technologies of mixing, vulcanization forming and the like. The elastic backing board provided by the invention has the properties as follows: 1, high elasticity and low static rigidity; 2, excellent fatigue property (the elastic backing board passes 30,0000 times of fatigue testing according to the regulation of tentative technical specifications for fastener systems on passenger special lines); and 3, favorable oil resistance, weatherability, aging resistance, insulating property and shock-absorbing and cushioning effects, and improvement on the riding comfort and safety of high-speed trains.

Description

technical field [0001] The invention belongs to the technical field of rubber shock-absorbing products, and in particular relates to an elastic backing plate for railway track shock-absorbing and a manufacturing method thereof. Background technique [0002] my country is carrying out large-scale construction of passenger dedicated lines and high-speed railways. By 2020, more than 10,000 kilometers of passenger dedicated lines will be built, forming the skeleton of "four horizontal and four vertical" passenger dedicated lines. More than 2,000 kilometers of high-speed railway. With the continuous improvement of people's requirements for the speed of trains, how to solve the vibration and impact caused by the running of vehicles has become a very critical issue. [0003] In order to reduce vibration and noise, the new fastener system designs an elastic backing plate under the iron backing plate, which is a key elastic component in the high-speed railway fastener system and play...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/07C08L83/08E01B9/68E01B19/00C08K13/02C08K3/36B29B7/72B29C35/02
CPCB29B7/7495
Inventor 魏荣梅陈兵勇王炜王凡马国富
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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