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A kind of lightweight composite sleeper and preparation method thereof

A composite sleeper, lightweight technology, applied in the field of polymer materials, can solve the problems of short service life, poor stability, difficult installation, etc., and achieve the effects of good durability, convenient laying and high mechanical strength

Active Publication Date: 2016-06-22
河北首科铁路器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a lightweight composite sleeper and its preparation method, which solves the problems of short service life, waste of resources, poor stability, heavy weight and difficult installation of existing sleepers

Method used

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preparation example Construction

[0039] According to an embodiment of the preparation method of a lightweight composite sleeper of the present invention: a preparation method of a lightweight composite sleeper comprises the following steps:

[0040] Step 1: Select the polyurethane stock solution combination material, matrix reinforcing material, and lightweight filler in a weight ratio of 10:1 to 100:0.1 to 1, wherein the polyurethane stock solution composition material includes polyol and isocyanate;

[0041] Step 2, the matrix reinforcing material is a composite reinforcement composed of fiber and resin, and the composite reinforcement is arranged in the inner cavity of the mold according to the reinforcement direction of the sleeper design, and at the same time, a reserved hole or embedded part assembly is arranged in the mold as required;

[0042] Step 3: After stirring and mixing the polyurethane raw liquid composition and light filler quickly, spray or pour it into the mold immediately;

[0043] In step...

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Abstract

The invention relates to the technical field of polymer materials, in particular to a lightweight composite sleeper and a preparation method thereof. The lightweight composite sleeper includes a polyurethane raw liquid composition material, a matrix reinforcement material and a lightweight filler, and the weight ratio thereof is 10:1 to 10:1. 100: 0.1 to 1. The function of the present invention is: the new lightweight composite material sleeper not only has high mechanical strength, corrosion resistance, and fatigue resistance, but also has low water absorption, electrical insulation, and good durability. More importantly, it is light in weight and can be passed through different molds. Various types and sizes of sleepers are formed. The structure is rich and varied, and it is easy to lay, which can meet different working conditions. It can be used not only as a general road sleeper, but also as a turnout sleeper or bridge sleeper, reducing the weight of the bridge while reducing the weight of the bridge. Improved safety and stability of railway operations.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a lightweight composite sleeper and a preparation method thereof. Background technique [0002] At present, the railway has become the most important of many means of transportation, and the sleeper is an important part of it, and its performance plays a vital role in the safe operation of the railway and even the development of the national economy. [0003] In the history of the development of railway sleeper technology in the world, wooden sleepers, steel sleepers and concrete sleepers have appeared one after another, and these three sleepers have played an important role in different historical periods. Among them, wooden sleepers have low cost, good elasticity, light weight, easy processing and laying, and good insulation, but there are also problems such as easy cracking, poor weather resistance, and short service life. More importantly, wooden sleepers consume fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L63/00C08L67/06C08K7/10C08K7/20C08K7/14C08K7/26C08K7/18C08G18/76C08G18/73C08G18/48C08J9/08
Inventor 胡斌杨盛华杨斌华李梦雅阮军
Owner 河北首科铁路器材有限公司
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