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Novel elastic supporting block type foaming base plate for non-slag track and manufacturing process thereof

An elastic support, slag-free track technology, applied in the field of foam rubber pads under rail transit rails, can solve the problems of low product qualification rate, discontinuous production, long processing time, etc., and improve the uniformity of foam pore size , The effect of reducing the number of on-site operators and improving the efficiency of the production process

Inactive Publication Date: 2018-12-28
湖南昶力轨道交通设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The production process of traditional foam pads is discontinuous, the processing time required for each product is longer, the required on-site operators are more, the efficiency is very low, and it cannot adapt to the market of large quantities and rapid supply of such products need
[0006] (2) The pass rate of products produced by traditional foam pads is low, because the production is discontinuous and many process control points are added at the same time, so the pass rate of products is always low and the scrap rate is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The manufacture of foam pads is through kneading, extrusion molding, embossing, high temperature setting, microwave vulcanization, hot air vulcanization, forced cooling, automatic cutting and other process steps, and finally the finished product is inspected and put into storage. The mixing process step is to put the blend into an internal mixer and mix it. When mixing, put raw rubber first, then put reinforcing agent, anti-aging agent, active agent and plasticizer, and then put vulcanizing agent. And accelerant,, carry on successively thin pass, next film. The raw rubber is EPDM rubber; the accelerator includes triallyl isocyanurate, tetramethylthiuram disulfide and 2,2'-dithiodibenzothiazole; the reinforcing agent includes fast Extrude carbon black and high wear-resistant carbon black, the vulcanizing agent is sulfur, and the anti-aging agent includes N-isopropyl-N'-phenyl-p-phenylenediamine, 2,2,4-trimethyl-1,2-bis Hydroquinoline polymer and microcrystalline wax; ac...

Embodiment 2

[0028] The difference from Example 1 is that the blend in this example consists of components by weight: 100 parts of EPDM rubber, 5-5.5 parts of zinc oxide, 2-2.3 parts of stearic acid, N -Isopropyl-N'-phenyl-p-phenylenediamine 1-1.3 parts, 2,2,4-trimethyl-1,2-dihydroquinoline polymer 1-1.1 parts, microcrystalline wax 1-1.2 parts 50-60 parts of fast extruded carbon black, 30-35 parts of high wear-resistant carbon black, 0.9-1.2 parts of polyethylene glycol, 50-55 parts of paraffin oil, 0.9-1 part of sulfur, triallyl isocyanide 1-1.1 parts of uric acid ester, 0.3-0.35 parts of tetramethylthiuram disulfide, 1.5-1.6 parts of 2,2'-dithiodibenzothiazole, 2-2.3 parts of azodicarbonamide, 4, 3-3.2 parts of 4'oxobisbenzenesulfonyl hydrazide.

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PUM

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Abstract

A foaming base plate is made of a blend. The blend comprises, by weight parts, ethylene propylene diene monomer rubber, zinc oxide, stearic acid, N-isopropyl N'-phenyl p-phenylenediamine, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, microcrystalline wax, fast extruding carbon black, high abrasion resistant carbon black, polyethylene glycol, paraffin oil, sulfur, triallyl isocyanurate, tetramethylthiuram disulfide, 2,2'-dithio-bisbenzothiazole, azodicarbonamide and 4,4'-dioxylbisbenzensulfonyl hydrazide. According to the foaming base plate, a novel formula is adopted, the pass rate of the product is greatly improved, the uniformity of the foaming pore diameter of the product is obviously improved, and the stability of the product is obviously improved.

Description

technical field [0001] The invention relates to an under-rail foamed rubber backing plate of a rail transit type and a manufacturing process thereof. Background technique [0002] Rubber boots and foam backing plates are rubber shock-absorbing products used under ballastless track rails. They are used in ballastless track elastic support block assemblies. When in use, the foam backing plates are placed in the boots and placed on concrete sleepers. Under the pillow, an elastic sleeper is formed, which acts as an elastic buffer. It can effectively improve the overall elasticity of the track structure, buffer the strong vibration and impact of the train passing through, and the elastic sleeper can reduce the vibration acceleration of the ballast bed, reduce the compressive stress of the ballast bed and the roadbed, effectively protect the ballast bed, and delay the deformation of the ballast bed. damage, protect roadbed and sleepers. Such products are mainly used in tunnel se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/22C08K5/09C08K5/18C08K3/04C08J9/10
CPCC08J9/0023C08J9/0028C08J9/0066C08J9/0095C08J9/103C08J9/105C08J2203/04C08J2323/16C08J2491/06
Inventor 陈平郭秋顺
Owner 湖南昶力轨道交通设备有限公司
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