High-bearing crossing plate and preparation method thereof

Abstract

The invention relates to the field of crossing plates, and particularly discloses a high-bearing crossing plate and a preparation method thereof. The high-bearing crossing plate is prepared from the following raw materials: polyurethane, waste paper pulp, maleic anhydride, a vulcanizing agent, zinc oxide and stearic acid. The preparation method comprises the following steps: mixing the raw materials to obtain a rubber compound, injecting the rubber compound into a mold, and cooling to obtain the crossing plate. The polyurethane, the waste paper pulp and the maleic anhydride are adopted, and the polyurethane serves as a base material of the crossing plate, so that the crossing plate has a certain strength and is not prone to fragmentation during loading; the waste paper pulp contains a large number of paper fibers and can reinforce the polyurethane after being mixed; and the paper fibers contain a large number of hydroxyl groups, and maleic anhydride can react with the paper fibers to improve compatibility of polyurethane and waste paper pulp, so that stress concentration in the crossing plate is reduced when the crossing plate is stressed, the bearing performance of the crossing plate is comprehensively improved, meanwhile, secondary utilization of waste paper is achieved, discarding of the waste paper is reduced, and the environment-friendly effect is achieved.

Description

technical field [0001] The present application relates to the field of crossing slabs, more specifically, it relates to a high-load-bearing crossing slab and a preparation method thereof. Background technique [0002] The railway crossing is the intersection of the railway and the road. In order to facilitate the passage of pedestrians and vehicles on the road, a railway crossing plate is generally laid between the rails at the railway crossing. [0003] Railway crossing slabs are generally made of concrete, wood or stone materials, but in actual use, concrete crossing slabs and stone crossing slabs have high strength and high hardness, are prone to cracking after loading, and have low load-bearing capacity , Wooden crossing boards are easily corroded, low in strength, and difficult to bear the load of roads and railways. [0004] During the long-term use, the shortcomings of the above-mentioned crossing slabs have become increasingly prominent, and due to its insufficient ...

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem of insufficient bearing capacity of railway crossing slabs, the application provides a high-load-bearing crossing slab and its preparation method