Elastic tie-plate for high-speed railway and fabrication method thereof

Abstract

The invention discloses an elastic tie-plate for a high-speed railway. The elastic tie-plate is prepared from the following raw materials in parts by weight: 80-100 parts of natural rubber, 40-60 parts of cis-butadiene rubber, 20-30 parts of methyl silicone rubber, 20-30 parts of poly dimethyl siloxane, 15-18 parts of high styrene, 8-10 parts of dilauryl thiodipropionate, 8-10 parts of undecylenic acid, 7-9 parts of active magnesium oxide, 1-3 parts of dispersive lubricant, 5-7 parts of calcium sulfate whiskers, 10-30 parts of ceramic fibers, 10-13 parts of microcrystalline wax, 30-40 parts of cashew nut husk oil, 35-45 parts of carbon black, 3-5 parts of hollow microspheres, 3-6 parts of shell powder, 10-15 parts of modified Rectorite, 20-30 parts of red mud, 6-8 parts of coumarone resin, 2-4 parts of curing agent, 3-6 parts of accelerator, 0.8-1.5 parts of anti-aging agent and 2-4 parts of triethylenediamine. The elastic tie-plate disclosed by the invention has the advantages of excellent mechanical strength, oil resistance, anti-aging performance, cold resistance and durability, good shock absorption effect and impact resistance and stable performance. The production process of the elastic tie-plate is easily controlled.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to an elastic backing plate for high-speed railways and a manufacturing method thereof. Background technique [0002] With the success of the train speed increase, the opening of the Beijing-Tianjin intercity railway, my country has entered a new era of high-speed railways. At present, high-speed railways use ballastless tracks, but ballastless tracks also have certain disadvantages, such as poor shock absorption effect, and the elasticity needs to be improved. It is a kind of microporous elastomer material. This product adopts the process of factory prefabrication and on-site installation. It is laid under the type II plate track to reduce vibration and noise. The current elastic backing plate generally has shock absorption performance, Heat resistance, cold resistance, and durability are not ideal. Therefore, it is necessary to develop a high-speed iron elastic backing plat...

AI Technical Summary

Problems solved by technology

[0002] With the success of the train speed increase, the opening of the Beijing-Tianjin intercity railway, my country has entered a new era of high-speed railways. At present, high-speed railways use ballastless tracks, but ballastless tracks also have certain disadvantages, such as poor shock absorption effect, and the elasticity needs to be improved. It is a kind of microporous elastomer material. This product adopts the process of factory prefabrication and on-site installation. It is laid under the type II plate track to reduce vibration and noise. The current elastic backing plate generally has shock absorption performance, Heat resistance, cold resistance, and durability are not ideal, so it is necessary to develop a high-speed iron elastic backing plate with excellent comprehensive performance