A reinforced composite material sleeper for rail transit and its production process

A reinforced composite material and rail transit technology, applied in the field of reinforced composite sleepers for rail transit and its production technology, can solve the problems of complex sleeper manufacturing process, high product cost, and difficulty in popularization and use, so as to meet the railway use conditions and reduce the Effects of maintenance and material cost reduction

Inactive Publication Date: 2011-12-28
QINGDAO HUACI MARINE EQUIP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex manufacturing process and high product c...

Method used

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  • A reinforced composite material sleeper for rail transit and its production process
  • A reinforced composite material sleeper for rail transit and its production process
  • A reinforced composite material sleeper for rail transit and its production process

Examples

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Effect test

Embodiment 1

[0023] Refer to attached figure 1 and figure 2 , the present invention is a reinforced composite material sleeper for rail transit, the sleeper includes a sleeper body and high-density polyurethane foam filled in the sleeper body; the sleeper body is made of the following raw materials in parts by weight: unsaturated polystyrene 90 parts of ester resin, 1 part of initiator, 1 part of liquid release oil, 40 parts of filler, 1 part of viscosity reducer, 1 part of auxiliary agent, 170 parts of a mixture of glass fiber felt and glass fiber multiaxial cloth; The ratio of glass fiber, glass fiber mat and glass fiber multiaxial cloth is 60:10:30. Its filler is hollow glass microspheres. Its auxiliary agent is a silane coupling agent.

[0024] A production process for reinforced composite material sleepers for rail transit, comprising the following steps:

[0025] (1) According to the proportion of the formula, the unsaturated polyester resin and other ingredients are stirred eve...

Embodiment 2

[0033] Refer to attached figure 1 and figure 2 , the present invention is a reinforced composite material sleeper for rail transit, the sleeper includes a sleeper body and high-density polyurethane foam filled in the sleeper body; the sleeper body is made of the following raw materials in parts by weight: unsaturated polystyrene 80 parts of ester resin, 2 parts of initiator, 2 parts of liquid release oil, 30 parts of filler, 2 parts of viscosity reducer, 1-3 parts of auxiliary agent, mixture of glass fiber, glass fiber mat and glass fiber multi-axial cloth 150 part; the proportioning of glass fiber, glass fiber felt and glass fiber multiaxial cloth in the mixture is 60:10:30. Its filler is aluminum oxide, and its auxiliary agent is silane coupling agent.

[0034] A production process for reinforced composite material sleepers for rail transit, comprising the following steps:

[0035] (1) According to the proportion of the formula, the unsaturated polyester resin and other ...

Embodiment 3

[0043] Refer to attached figure 1 and figure 2 , the present invention is a reinforced composite material sleeper for rail transit, the sleeper includes a sleeper body and high-density polyurethane foam filled in the sleeper body; the sleeper body is made of the following raw materials in parts by weight: unsaturated polystyrene 100 parts of ester resin, 2 parts of initiator, 2 parts of liquid release oil, 50 parts of filler, 2 parts of viscosity reducer, 3 parts of auxiliary agent, 200 parts of a mixture of glass fiber, glass fiber mat and glass fiber multiaxial cloth, The ratio of glass fiber, glass fiber mat and glass fiber multiaxial cloth in the mixture is 60:10:30. Its filler is calcium carbonate. Its auxiliary agent is a silane coupling agent.

[0044]A production process for reinforced composite material sleepers for rail transit, comprising the following steps:

[0045] (1) According to the proportion of the formula, the unsaturated polyester resin and other ingr...

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Abstract

The invention discloses a reinforced composite material sleeper for rail transit. The sleeper comprises a sleeper body and high-density polyurethane foam filled in the sleeper body; the sleeper body is made of the following raw materials in parts by weight: unsaturated polyurethane 80-100 parts of ester resin, 1-2 parts of initiator, 1-2 parts of liquid release oil, 30-50 parts of filler, 1-2 parts of viscosity reducer, 1-3 parts of auxiliary agent, glass fiber, glass fiber mat 150-200 parts of mixture with glass fiber multi-axial cloth; the ratio of glass fiber, glass fiber felt and glass fiber multi-axial cloth in the mixture is 60:10:30. After the present invention is filled with high-density polyurethane foam, the modulus of elasticity of the overall sleeper is increased by about 20%, the bending strength is increased by 18%, the compressive recovery strength is increased by 20%, and the effect of shock absorption and noise reduction is slightly improved. And it effectively solves the problem that the overall performance of the sleeper is reduced by opening holes on the surface of the glass fiber composite sleeper. After the static load pressure test is performed on the composite sleeper introduced with high-density polyurethane foam, the overall compressive strength of the composite sleeper does not change much. At the same time, because polyurethane foam is a microporous material, its weight is relatively light.

Description

technical field [0001] The invention relates to a sleeper and its production process, in particular to a reinforced composite material sleeper for rail transit and its production process. Background technique [0002] With the rapid development of my country's national economy, intercity rail transit and high-speed railways are also developing rapidly. At present, the sleepers used for rail transit mainly include wooden sleepers and concrete sleepers. However, because the processing and manufacturing of wooden sleepers requires a large amount of wood and the product itself has disadvantages such as non-corrosion resistance and short service life, it deviates from the national low-carbon environmental protection requirements. Therefore, the use of concrete sleepers is gradually reduced; although the price of concrete sleepers is low and the production process is simple, due to the limitations of the product's own materials, its performance also has a large weight, inconvenien...

Claims

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Application Information

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IPC IPC(8): E01B3/44C08L67/06C08K13/04C08K7/14
Inventor 徐奎忠
Owner QINGDAO HUACI MARINE EQUIP TECH CO LTD
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