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Weatherable mixing rubber for rail sleeper pad and preparation method thereof

A technology for sleeper pads and compounded rubber, which is applied in the field of rubber manufacturing, can solve the problems of not considering the weather resistance of the product, affecting the use and safety, product cracking, etc., and achieves low compression set, good heat resistance, and good physical properties Effect

Inactive Publication Date: 2017-12-08
TAICANG GUANLIAN POLYMERIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the formulas used in China do not consider the weather resistance of the products, so some products may crack and deform, which will affect the use and safety

Method used

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  • Weatherable mixing rubber for rail sleeper pad and preparation method thereof
  • Weatherable mixing rubber for rail sleeper pad and preparation method thereof
  • Weatherable mixing rubber for rail sleeper pad and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0039] According to the following steps, the weather-resistant mixed rubber for railway sleeper backing plates involved in the present invention is manufactured.

[0040] Prepare rubber, according to the ratio in Table 1, weigh the raw materials accurately in turn, and put them aside for later use.

[0041] For the first mixing, put natural rubber, styrene-butadiene rubber and the compounding ingredients except diethylene glycol into the internal mixer for mixing, and the mixing time is 60s; put in the coupling agent and diethylene glycol, and then put the reinforcement Filler carbon black and white carbon black are put into the internal mixer, and after the mixing temperature reaches 145°C and kept for 30s, the upper bolt is cleaned; the anti-aging agent is put in, and then cleaned again after mixing for 40-60s; finally mixed After refining for 50-70s, the material is unloaded and the sheet is discharged to make A mixed rubber for later use;

[0042] In the second kneading, ...

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PUM

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Abstract

The invention discloses a weatherable mixing rubber for a rail sleeper pad. The weatherable mixing rubber for the rail sleeper pad is prepared from the following components in percentage by weight: 10 to 20 percent of natural rubber, 25 to 38 percent of butylbenzene rubber, 10 to 14 percent of carbon black, 20 to 30% of white carbon black, 1 to 5 percent of antiager, 5 to 8 percent of compounding agent and 1.5 to 4 percent of vulcanization accelerator. A product of the invention has suitable rigidity, high resistance, excellent voltage resistance, good weatherability, and excellent physical properties and process performance.

Description

technical field [0001] The invention belongs to the field of rubber manufacturing, and in particular relates to a weather-resistant mixed rubber for railway sleeper backing plates and a preparation method thereof. Background technique [0002] Reinforced concrete sleepers, because their prices are comparable to wooden sleepers, but their service life is several times higher than wooden sleepers, and the track frame structure is stable. Using concrete sleepers for railway tracks can not only save a lot of high-quality wood, achieve greater economic benefits, but also reduce track Changes in the orbital direction will reduce the maintenance workload of related projects accordingly. Therefore, concrete sleepers have been widely used in railway laying in my country since the end of the 1950s. [0003] However, after using concrete sleepers, the elasticity of the track is significantly lower than that of wooden sleeper lines, resulting in a decrease in the cushioning performance...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L7/00C08K13/02C08K3/36C08K3/04C08K5/548C08K5/18C08K5/3437
CPCC08L9/06C08L2201/08C08L7/00C08K13/02C08K3/36C08K3/04C08K5/548C08K5/18C08K5/3437
Inventor 徐鹏周国荣井垒
Owner TAICANG GUANLIAN POLYMERIC MATERIAL