Preparation method and application of oil resistant rubber applied under railroad switch

Abstract

The invention discloses an oil resistant rubber applied under a railroad switch. The oil resistant rubber comprises, by weight, 100 parts of acrylonitrile-butadiene rubber N41 as a big material, 45-65 parts of reinforcing agent and 15-25 parts of anti-wearing agent as middle materials, 4-8 parts of vulcanizing agent, 3-5 parts of accelerant, 1-4 parts of anti-aging agent, 2-4 parts of coupling agent and 1 part of octadecanoic acid as small materials. The invention further provides a preparation method and application of the oil resistant rubber applied under the railroad switch. The oil resistant rubber applied under the railroad switch has the advantages of being good in performance, and high in cost effectiveness. The novel type oil resistant rubber cushion plate applied under railroad switch prepared by using the oil resistant rubber applied under railroad switch can fully meet the railway industry standard TB / T2626-1995 and the high speed railway standard TB / T3395.(1-5) 2015 technical standard, and has little appearance change and stable physical properties, has an oil resistant index more than four times higher than the traditional rubber cushion plate applied under the railroad switch, has an oil absorption rate below 1.53-2.96%, which all prolong the service life of the rubber cushion plate applied under the railroad switch.

Description

technical field [0001] The invention belongs to the field of polymer processing, and in particular relates to an oil-resistant turnout rubber used as a rubber for railway turnouts, a manufacturing method and application thereof. Background technique [0002] my country is carrying out large-scale construction of passenger dedicated lines and high-speed railways. By 2020, more than 10,000 kilometers of passenger dedicated lines will be built, forming a "four vertical and four horizontal" passenger dedicated line skeleton, and building a hub for the Bohai Sea Circle, the Yangtze River Delta and the Pearl River Delta. More than 2,000 kilometers of high-speed railway. With the continuous improvement of people's requirements for the speed of trains, how to solve the vibration and impact caused by the running of vehicles has become a very critical issue. [0003] In order to reduce vibration and noise, the new fastener system designs an elastic backing plate under the iron backing...

AI Technical Summary

Problems solved by technology

[0007] In the Chinese invention patent application whose publication number is CN101058629A, it is disclosed that the backing plate made of polyurethane foam has the characteristics of low compression characteristics, high mechanical strength and low water absorption, but the test of fatigue performance is carried out in a 50mm×50mm×10mm 10 million (9±6) KN vibrations were applied to the test piece, which did not meet the fatigue performance test standard in the "Interim Technical Conditions for Fastener System of Passenger Dedicated Lines", and did not consider oil resistance, oil absorption rate, and corrosion resistance.

[0008] In the Chinese invention patent application with the publication number CN101831118A, it is disclosed that the backing plate is made of chlorinated polyethylene, which improves the weather resistance and aging resistance, but it does not consider the oil resistance, oil absorption rate, corrosion resistance and rigidity

Images