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Thermal insulation thermoplastic composite material for roadbed

A technology of composite materials and thermal insulation materials, applied in the field of thermal insulation thermoplastic composite materials for roadbeds, can solve the problems of poor impact resistance, non-corrosion resistance, high brittleness, etc., and achieve the effect of improving the application field, good thermal insulation performance, and good bonding strength

Inactive Publication Date: 2014-06-04
LIAONING LIAOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of society, the construction of roads and railways has made great contributions to the progress of society and economic development, but the construction of roads and railways in plateau areas and cold areas inevitably produces the excavation of permafrost and backfilling have caused irreversible impacts on the local ecological environment and the increase in construction volume has increased the cost of construction. In order to solve the above problems, roadbed thermal insulation is now used in the construction of highways and railways in plateau areas and cold areas. Materials, including straw felt, polyurethane board, etc.
However, the inherent characteristics of the above materials such as non-recyclable, non-corrosion-resistant, high brittleness, and poor low-temperature impact resistance result in short service life, and poor stability of roadbed with long service life.

Method used

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  • Thermal insulation thermoplastic composite material for roadbed

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Effect test

Embodiment 1

[0041] A kind of thermal insulation thermoplastic composite material for roadbed, its structure is as follows figure 1 As shown, the heat-insulating thermoplastic composite material for the subgrade consists of three layers, the base layer 3 is the heat-insulation layer, the middle layer 2 is the high-strength adhesive layer, and the upper layer 1 is the thermoplastic composite material. The upper layer 1 thermoplastic composite acts as a skin layer to provide the strength of the entire composite. Rigidity and impact performance, the middle layer 2 adhesive layer serves as a transition layer to provide connection, and the base layer 3 mainly provides thermal insulation and antifreeze performance.

[0042] The above three layers of materials are bonded and pressed together by a high-strength adhesive layer. Among them, the thermoplastic composite material is carbon fiber reinforced nylon 6 copolymer (among them, the content of nylon 6 copolymer is 40%, the content of carbon fi...

Embodiment 2

[0048] A thermal insulation thermoplastic composite material for roadbed, the composite material has a three-layer structure, the base layer 3 is thermal insulation material, the middle layer 2 is a high-strength adhesive layer, the upper layer 1 is a thermoplastic composite material, and the above three layers are bonded by high-strength adhesive It is formed by bonding and pressing composite layers. Among them, the thermoplastic composite material is glass fiber-reinforced polypropylene copolymer, the high-strength bonding layer is an EVA film layer, and the insulation layer is a benzene board insulation layer.

[0049] The preparation method of thermal insulation thermoplastic composite material comprises the following steps:

[0050] (1) Pass the glass fiber reinforced polypropylene composite material with a fiber content of 55% and a resin content of 45% through a roller, the temperature of the roller is 150°C to heat and melt the composite material, and the pressure of t...

Embodiment 3

[0054] A thermal insulation thermoplastic composite material for roadbed, the composite material has a three-layer structure, the base layer is a thermal insulation material, the middle layer is a high-strength bonding layer, and the upper layer is a thermoplastic composite material, and the above three layers are bonded by a high-strength bonding layer Combined and pressed together. The thermoplastic composite material is a blend of carbon fiber reinforced polyethylene and polypropylene, the high-strength bonding layer is a Dow Corning DC7091 silica gel layer, and the insulation layer is a polyurethane insulation layer.

[0055] The preparation method of the above-mentioned thermal insulation thermoplastic composite material comprises the following steps:

[0056] (1) Pass the carbon fiber reinforced polyethylene and polypropylene composite materials with a fiber content of 50% and a resin content of 50% through the No. 1 roll, and the temperature of the No. 1 roll is control...

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Abstract

The invention discloses a thermal insulation thermoplastic composite material for a roadbed. The material comprises an upper layer, a middle layer and a base layer in sequence from up to bottom, wherein the upper layer and the base layer are bonded, combined and pressed through the middle layer, the upper layer is thermoplastic composite material; the middle layer is a bonding layer and the base layer is thermal insulation material. According to the invention, the thermal insulation thermoplastic composite material adopts the thermoplastic composite material as the upper layer, so that the intensity and the rigidity of the whole material are provided and more importantly the shock resistance performance which is far better than that of a common thermal insulation material is provided; the base layer is the thermal insulating layer and connected through the bonding layer, so that material of which the bonding performance is poor between the upper layer and the base layer has good bonding intensity; the thermal insulation thermoplastic composite material is mainly applied for thermal insulating of roadbeds of highways and railways in plateau areas or cold areas.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a heat-insulating thermoplastic composite material for roadbeds. Background technique [0002] With the development of society, the construction of roads and railways has made great contributions to the progress of society and economic development, but the construction of roads and railways in plateau areas and cold areas inevitably produces the excavation of permafrost and backfilling have caused irreversible impacts on the local ecological environment and the increase in construction volume has increased the cost of construction. In order to solve the above problems, roadbed thermal insulation is now used in the construction of highways and railways in plateau areas and cold areas. Materials, including straw felt, polyurethane board, etc. However, the inherent characteristics of the above materials such as non-recyclable, non-corrosion-resistant, high brittleness, and poor low...

Claims

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Application Information

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IPC IPC(8): E01C3/06E01B2/00B32B27/08B32B27/20B32B37/15B32B37/10B32B37/06
Inventor 刘旭
Owner LIAONING LIAOJIE SCI & TECH
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