Rubber compound, microporous rubber elastic tie plate for tram rails and production method of microporous rubber elastic tie plate

Abstract

The invention discloses a rubber compound, a microporous rubber elastic tie plate for tram rails and a production method of the microporous rubber elastic tie plate. The microporous rubber elastic tie plate for the tram rails is prepared from the rubber compound by vulcanizing, wherein the rubber compound is prepared from the following components in parts by weight according to a formula: 100 parts of rubber, 6-10 parts of high-performance fibers, 4-7 parts of an active agent, 75-150 parts of reinforcing filler, 1-3 parts of a surface modifier, 10-35 parts of a plasticizer, 1-2 parts of an anti-aging agent, 1-2 parts of a dispersing agent, 2-10 parts of a foaming agent and 5-20 parts of a vulcanizing auxiliary. Bearing force can be resisted effectively under lower rigidity, the elasticity of the tie plate is enhanced, the production efficiency is high, few control links are needed, and the production cost can be reduced substantially.

Description

technical field [0001] The invention relates to the technical field of rail transit vehicle vibration reduction. Background technique [0002] In the new round of urban rail transit development, modern trams have the characteristics of convenient passengers getting on and off, diverse marshalling, flexible operation, and complementarity with bus road resources. One of the ways has been widely accepted. Compared with subways and light rails, modern trams have obvious advantages in terms of cost, energy consumption, service life, and construction period. Therefore, modern trams are changing the concept of traditional trams. After the shortcomings, it is very suitable for the low-carbon and fast transportation needs of modern cities. The Netherlands, Germany, France, Italy, the United States, Japan, etc. in Europe are all vigorously developing tram systems. According to incomplete statistics, more than 240 cities in more than 600 countries in the world are developing modern tr...

AI Technical Summary

Problems solved by technology

At present, domestic rubber pads generally implement the requirements of the TB / T2626-1995 standard, which is only applicable to ordinary railways. After years of development, high-speed railways have formed industry standards, but the relevant standards in the field of trams are not perfect. General requirements for high-speed railways The dynamic and static stiffness ratio of the rubber backing plate is lower than 1.5, and the static stiffness is generally 20-50kN / mm, while the static stiffness of the rubber backing plate required by the tram line is generally 14-60 kN / mm, and the dynamic and static stiffness ratio is required to be lower than 1.3 , the static stiffness distribution range is wider, and the dynamic and static stiffness ratio is lower than required, it is difficult to match, so the research and development is more difficult

[0004] The existing technology mostly adopts EPDM or NR formula technology, and adopts two-stage vulcanization with oven baking supplementary vulcanization technology or one-stage vulcanization technology. The former has many procedures, complicated process, difficult control and high cost, while the latter has long vulcanization time and low efficiency. , to realize the production process of the product

The main disadvantage of the existing technology is that it cannot satisfy low stiffness and low dynamic-static ratio at the same time, and the dynamic-static stiffness ratio is generally larger under low static stiffness. At the same time, the vulcanization process adopted by the existing technology is two-stage or three-stage vulcanization, and then auxiliary oven baking