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Tunnel fire-proof and heat-preservation sheet material for alpine region and manufacturing method of tunnel fire-proof and heat-preservation sheet material

A technology for fire protection and heat preservation in high and cold areas, applied in fireproof coatings, chemical instruments and methods, manufacturing tools, etc., can solve the problems of neglecting the performance and effect of tunnel heat preservation, low fire resistance limit, easy to fall off, etc., to improve the surface disorder, The effect of improving bond strength and high bond strength

Pending Publication Date: 2019-06-07
HEBEI JUNHUI SECURITY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the field of fire protection and heat preservation of tunnels, the fire-proof paint is directly sprayed on the surface of the second lining of the tunnel. Since the surface of the second lining of the tunnel is smooth, there are oil stains, fake leather, etc., the bonding strength between the fire-proof paint and the second lining is not high, and it is easy to In addition, in the cold and severe cold regions of our country, tunnels generally only do fire prevention and ignore the thermal insulation performance and effect of the tunnel, which does not have any anti-freezing and thawing effect on the tunnel lining, and causes great frost damage to the tunnel
In recent years, global forest resources are becoming increasingly depleted, social environmental protection awareness is increasing, and higher requirements are placed on the application of wood. However, existing materials generally have short fire resistance time, low fire resistance limit, poor freeze-thaw resistance, easy cracking, chalking problem
[0004] Chinese patent CN102434176A discloses a method for preparing a waterproof, fireproof and thermal insulation composite board for tunnels. According to the specific shape of the tunnel, the corresponding thermal insulation layer, waterproof layer, fireproof layer and aesthetic layer are prepared, and then all the above four layers are used The adhesive layer is pasted together, but its flame retardancy, frost resistance and surface strength still do not meet the high standard requirements

Method used

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  • Tunnel fire-proof and heat-preservation sheet material for alpine region and manufacturing method of tunnel fire-proof and heat-preservation sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A fire-proof and heat-preservation board for tunnels used in alpine regions, the specific production method is as follows:

[0039] (1) Clean the wood to remove the surface dust. The cleaned wood is subjected to high temperature and high pressure treatment, put it into a closed tank, keep the relative humidity in the tank not less than 80%, raise the temperature to 120°C, pressurize to 0.4MPa, and treat for 10 minutes ; After drying the wood after high temperature and high pressure treatment until the water content is not more than 10%, the upper surface of the wood is polished with sandpaper to make the surface of the wood get a micro-nano rough structure, and a strip-shaped groove is processed on the lower surface of the wood. The size of the level rough structure is 150 nm, and the size of the groove is 2 mm in width and 2 mm in depth.

[0040] (2) According to the following proportions by weight, 15 parts of water glass, 5 parts of phenolic resin, 1 part of hexameth...

Embodiment 2

[0044] A fire-proof and heat-preservation board for tunnels used in alpine regions, the specific production method is as follows:

[0045](1) Clean the wood to remove the surface dust. The cleaned wood is subjected to high temperature and high pressure treatment, put it into a closed tank, keep the relative humidity in the tank not less than 90%, raise the temperature to 140°C, pressurize to 0.2MPa, and treat for 8 minutes ; After drying the wood after high temperature and high pressure treatment until the water content is not more than 10%, the upper surface of the wood is polished with sandpaper to make the surface of the wood get a micro-nano rough structure, and a strip-shaped groove is processed on the lower surface of the wood. The size of the level rough structure is 250 nm, and the size of the groove is 2 mm in width and 2 mm in depth.

[0046] (2) According to the following proportions by weight, 50 parts of water glass, 15 parts of phenolic resin, 3 parts of hexameth...

Embodiment 3

[0050] A fire-proof and heat-preservation board for tunnels used in alpine regions, the specific production method is as follows:

[0051] (1) Clean the wood to remove the surface dust. The cleaned wood is subjected to high temperature and high pressure treatment, put it into a closed tank, keep the relative humidity in the tank not less than 80%, raise the temperature to 130°C, pressurize to 0.3MPa, and treat for 9 minutes ; After drying the wood after high temperature and high pressure treatment until the water content is not more than 10%, the upper surface of the wood is polished with sandpaper to make the surface of the wood get a micro-nano rough structure, and a strip-shaped groove is processed on the lower surface of the wood. The size of the level rough structure is 200 nm, and the size of the groove is 1.5 mm in width and 2 mm in depth.

[0052] (2) According to the following proportions by weight, 30 parts of water glass, 10 parts of phenolic resin, 2 parts of hexam...

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Abstract

The invention relates to a tunnel fire-proof and heat-preservation sheet for an alpine region and a manufacturing method of the tunnel fire-proof and heat-preservation sheet material. The fire-proof and heat-preservation sheet is composed of a surface layer and a heat-preservation layer, the surface layer and the heat-preservation layer are bonded by a high-strength adhesive layer, the surface layer is modified wood, the surface of the surface layer is sprayed with a high-expansion fire-proof coating layer, and the heat-preservation layer is a high density hydrophobic rock wool sheet. Comparedwith the prior art, the fire resistance of the sheet is obvious, the sheet can be rapidly expanded or carbonized when a fire occurs, the fire resistance limit is long, freeze-thaw resistance is high,surface strength is high, and the sheet is not easy to crack and pulverize.

Description

technical field [0001] The invention relates to a fireproof and thermal insulation board, in particular to a tunnel fireproof and thermal insulation board used in alpine regions and a manufacturing method thereof. Background technique [0002] As my country's highway and railway construction focus continues to move westward, the construction of highway and railway tunnels has increased year by year. Due to the special natural geographical environment in high-altitude areas, the freezing damage of conventionally constructed tunnels is extremely prominent. Especially when the area where the tunnel is located has typical plateau continental climate characteristics, it is necessary to install a composite insulation layer and a fireproof layer on the surface of the second lining of the tunnel, and adopt the rapid construction method of installing the tunnel arch wall insulation board to prevent the tunnel from freezing damage in winter and during operation. fire safety. [0003]...

Claims

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Application Information

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IPC IPC(8): B27D1/08B27D1/04B27D5/00B27K5/00C09D125/14C09D163/00C09D5/18C09D7/65C09J1/02C09J11/06C09J11/04C09J11/08B32B7/12B32B21/14B32B21/10B32B9/00B32B9/04B32B33/00B32B37/12
Inventor 李伟东李寒飞
Owner HEBEI JUNHUI SECURITY TECH CO LTD
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