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

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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

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  • Thermal insulation thermoplastic composite material for roadbed

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Example Embodiment

[0040] Example 1

[0041] A kind of thermal insulation thermoplastic composite material for roadbed, its structure is like figure 1 As shown, the thermal insulation thermoplastic composite material for roadbed is composed of three layers, the base layer 3 is a thermal insulation layer, the middle layer 2 is a high-strength bonding layer, and the upper layer 1 is a thermoplastic composite material. The upper layer 1 thermoplastic composite material serves as a surface layer to provide the strength of the entire composite material. For rigidity and impact performance, the interlayer 2 bonding layer serves as a transition layer to provide connection, and the base layer 3 mainly provides thermal insulation and antifreeze performance.

[0042] The above-mentioned three layers of materials are formed by bonding and pressing with a high-strength adhesive layer. Among them, the thermoplastic composite material is carbon fiber reinforced nylon 6 copolymer (wherein, the content of nylon 6 ...

Example Embodiment

[0047] Example 2

[0048] A thermal insulation thermoplastic composite material for roadbeds. The composite material has a three-layer structure. The base layer 3 is a thermal insulation material, the middle layer 2 is a high-strength adhesive layer, and the upper layer 1 is a thermoplastic composite material. The junction layer is bonded and pressed together. Among them, the thermoplastic composite material is a polypropylene copolymer reinforced with glass fiber, the high-strength adhesive layer is an EVA film layer, and the thermal insulation layer is a benzene board thermal insulation layer.

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

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

Example Embodiment

[0053] Example 3

[0054] A thermal insulation thermoplastic composite material for roadbeds. The composite material has a three-layer structure, the base layer is a thermal insulation material, the middle layer is a high-strength adhesive layer, and the upper layer is a thermoplastic composite material. The above three-layer materials are bonded by a high-strength adhesive layer. Compressed by knot compound. The thermoplastic composite material is a blend of carbon fiber reinforced polyethylene and polypropylene, the high-strength adhesive layer is Dow Corning DC7091 silica gel layer, and the thermal insulation layer is a polyurethane thermal insulation layer.

[0055] The method for preparing the thermal insulation thermoplastic composite material includes the following steps:

[0056] (1) Pass the carbon fiber reinforced polyethylene and polypropylene composite material with a fiber content of 50% and a resin content of 50% through the No. 1 roll. The temperature of the No. 1 rol...

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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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