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Rubber backing plate of passenger dedicated line

A technology for rubber pads and passenger dedicated lines, which is used in tracks, buildings, fixed rails, etc., can solve the problems of lack of dynamic and static stiffness ratio, inability to meet the technical requirements of rubber pads for passenger dedicated lines, and low aging resistance requirements. The effect of uniformity

Inactive Publication Date: 2009-03-11
WUXI TIEHUA RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional rubber backing plate generally implements the industry standard TB / T 2626-1995 of the Ministry of Railways, which is suitable for the existing ordinary railway with a design speed of 120km / h. The technical requirements of the rubber backing plate are the same as those of the passenger dedicated line rubber backing plate In comparison, firstly, the aging resistance requirement of the product is lower, the aging condition is 100℃×72h, and the working resistance of the product is only ≥10 6 Ω, and secondly, the 95 standard does not have the technical requirements of dynamic and static stiffness ratio, 3 million fatigue tests, and 5-year service life for rubber backing plates, so it cannot meet the technical requirements of rubber backing plates for passenger dedicated lines

Method used

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  • Rubber backing plate of passenger dedicated line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Styrene butadiene rubber 100; Zinc oxide 4; Stearic acid 1.5; Accelerator TMTD 1.2; Accelerator CZ 1.2; Accelerator DTDM 0.5; Coupling agent Si69 1.5; Semi-reinforcing carbon black 30; Nano-kaolin 70; Nano-calcium carbonate 20 Antiaging agent 4010NA 1.5; Antiaging agent RD 2; Microcrystalline wax 1; Sulfur 1; Total 235.4.

[0038] The production method is as follows:

[0039] (1), mastication: 100 parts of styrene-butadiene rubber is masticated in an open mill, then divided into blocks according to requirements, and then wound into rolls;

[0040] (2) Mixing: The order of feeding during mixing is:

[0041] First put the above rolls into the internal mixer and knead for 1 to 2 minutes;

[0042] Then put 1 / 2 of the coarse material in the internal mixer, and the mixing time is 1 to 2 minutes;

[0043] Add the remaining 1 / 2 coarse material, and mix for 1 to 2 minutes;

[0044] The coarse material comprises: 30 parts of semi-reinforcing carbon black; 70 parts of nano-kao...

Embodiment 2

[0056] Styrene butadiene rubber 100; zinc oxide 5; stearic acid 0.5; accelerator TMTD 0.8; accelerator CZ 0.7; accelerator DTDM 0.7 coupling agent Si69 1.0; semi-reinforcing carbon black 40; nano kaolin 50; nano calcium carbonate 15; Antiaging agent 4010NA 1.0; Antiaging agent RD 1.0; Microcrystalline wax 0.5; Sulfur 1.2; Total 236.5. Production technology and technical performance are with embodiment one.

Embodiment 3

[0058] Styrene butadiene rubber 100; Zinc oxide 6; Stearic acid 1.5; Accelerator TMTD 1.4; Accelerator CZ 0.5; Accelerator DTDM 0.9; Coupling agent Si69 2.0; Semi-reinforcing carbon black 50; Antiaging agent 4010NA 1.2; Antiaging agent RD 1.5; Microcrystalline wax 0.8; Sulfur 0.6; Total 236.1. Production technology and performance are the same as embodiment one.

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Abstract

The invention relates to a technology for laying train rails, in particular to a passenger special line rubber tie plate. According to the technical proposal provided by the invention, the rubber tie plate comprises 100 portions of styrene-butadiene rubber, 4 to 8 portions of zinc oxide, 0.5 to 1.5 portions of stearic acid, 0.8 to 1.5 portions of accelerant TMTD, 0.5 to 1.5 portions of accelerant CZ, 0.5 to 1.5 portions of accelerant DTDM, 1.0 to 3.0 portions of coupling agent Si69, 30 to 50 portions of semi-reinforcing carbon black, 50 to 70 portions of nano kaolin, 10 to 20 portions of nano calcium carbonate, 1 to 1.5 portions of antiaging agent 4010NA, 1 to 2 portions of antiaging agent RD, 0.5 to 1.5 portions of micro-crystalline wax and 0.3 to 1.5 portions of sulfur; and the unit is weight portion. The rubber tie plate makes the performance of the rubber tie plate reach the technical requirements of the passenger special line rubber tie plate by using high-performance novel materials, namely the nano kaolin and the nano calcium carbonate in the compositions, and has high insulativity, high ageing resistance and low ratio of dynamic stiffness to static stiffness of products.

Description

technical field [0001] The invention relates to a technology for laying train tracks, in particular to a rubber backing plate for passenger dedicated lines. Background technique [0002] The basic mode of modern railway operation is high speed and high density. This mode requires the railway to provide good stability and reasonable line flexibility, and has the characteristics of less maintenance. Therefore, the railway foundation is becoming more rigid, and the rails are becoming more heavy-duty. This trend requires the line to provide better flexibility. The necessary line elasticity is necessary to reduce rail wear, maintain line stability, meet the high speed and high density requirements of vehicles, buffer wheel and rail stress, maintain joint level, and prolong component life. [0003] The under-rail rubber pad is the most important part of the elastic rail fastener. It is responsible for many functions such as slowing down the vibration from the rail, alleviating th...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08K13/02C08K3/34C08K3/26B29C43/58B29C35/02B29B7/00E01B9/68C08K3/22C08K5/09C08K5/40C08K3/04C08K3/06
Inventor 纪庆年
Owner WUXI TIEHUA RUBBER
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