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Light composite sleeper as well as preparation method thereof

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

Active Publication Date: 2014-01-08
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 high molecular materials and particularly relates to a light composite sleeper as well as a preparation method thereof. The light composite sleeper comprises a polyurethane raw liquor combination material, a matrix enhancing material and light filler in a weight ratio of 10:(1-100):(0.1-1). The sleeper provided by the invention has the effects that the prepared novel light composite material sleeper not only has high mechanical strength and is corrosion-resistant and anti-fatigue, but also is low in water absorption, electrically insulating and good in durability. Even more important, the sleeper is light in weight, and sleepers of various types and dimensional specifications can be molded through different moulds. The sleeper is diverse in structure and convenient to pave, and can satisfy different working conditions. The sleeper not only can be used as a common sleeper, but also can be used as a turnout sleeper or a bridge sleeper, so that the safety and the stability of railway operation are improved while the self-weight of the bridge sleeper is reduced.

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 Applications(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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