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FFU (Fiber Reinforce-Foamed-Urethane) composite sleeper

A technology for sleepers and synthetic resins is applied in the field of new materials for railway sleeper systems, which can solve the problems of insufficient uniformity of elasticity, strength and durability of wooden sleepers, increase the dynamic action of wheels and rails, and high maintenance costs, so as to protect forests and reduce exhaust gas. material, the effect of high connection strength

Inactive Publication Date: 2014-11-26
SHAANXI TIANDI FOUND BUILDING NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wooden sleepers have the advantages of good elasticity, easy processing, and convenient use. Since the railway, it has been the main type of sleepers. However, due to the reason of material selection, the elasticity, strength and durability of wooden sleepers are not uniform enough, which will increase the size of the wheel and rail. Power action, and use a lot of high-quality wood
At present, domestic high-speed rail sleepers mainly use concrete sleepers with better economical efficiency, but due to their own material defects, such as poor energy absorption, easy breakage, inconvenient construction, and high maintenance costs, etc.

Method used

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  • FFU (Fiber Reinforce-Foamed-Urethane) composite sleeper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Long glass fiber 14%

[0031] Rigid urethane resin foam 85%

[0032] Melamine colorant 0.25%

[0033] Release agent 0.25%

[0034] Coupling agent 0.25%

[0035] Foaming agent 0.25%

Embodiment 2

[0037] Long glass fiber 16%

[0038] Rigid urethane resin foam 82%

[0039] Melamine colorant 1%

[0040] Release agent 0.2%

[0041] Coupling agent 0.3%

[0042] Foaming agent 0.5%

Embodiment 3

[0044] Long glass fiber 18.5%

[0045] Rigid urethane resin foam 80%

[0046] Melamine colorant 0.3%

[0047] Release agent 0.3%

[0048] Coupling agent 0.4%

[0049] Foaming agent 0.5%

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Abstract

The invention discloses an FFU (Fiber Reinforce-Foamed-Urethane) composite sleeper. The FFU composite sleeper is characterized by being molded by using a light corrosion-resistant structural material which is made by reinforcing synthetic resin foam through glass long fibers, wherein the glass long fibers are 20-35 nanometers in diameters, and are 2-8 centimeters in lengths; and the synthetic resin foam is made by performing chemical reaction foaming on hard ethyl carbamate resin. The FFU composite sleeper provided by the invention is a glass fiber-reinforced hard FFU microporous elastomer, has the excellent performance of high specific strength, shock absorption, noise reduction, electric insulation resistance, high durability and the like, is light in weight, is high in application property, and can be processed like wood; and the FFU composite sleeper contributes to environmental protection, and is recyclable.

Description

technical field [0001] The invention belongs to the technical field of new environment-friendly materials, and in particular relates to a new material used for railway sleeper systems. Background technique [0002] Sleepers are load-bearing objects, and are materials used for laying railways, special track running equipment and bearing equipment bedding. According to material properties, it can be divided into: wooden sleepers, reinforced concrete sleepers, steel sleepers, composite material sleepers, etc. Wooden sleepers have the advantages of good elasticity, easy processing, and convenient use. Since the railway, it has been the main type of sleepers. However, due to the reason of material selection, the elasticity, strength and durability of wooden sleepers are not uniform enough, which will increase the size of the wheel and rail. Power action, and use a lot of high-quality wood. At present, the domestic high-speed railway sleepers mainly use concrete sleepers with be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K13/04C08K7/14C08K5/3492C08J9/04E01B3/44
Inventor 金明
Owner SHAANXI TIANDI FOUND BUILDING NEW MATERIAL TECH
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