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Fireproof coating for tunnel and preparation method thereof

A technology for fire-resistant coatings and tunnels, applied in fire-resistant coatings, cement coatings, coatings, etc., can solve the problems of high traffic density, difficulty in evacuation and rescue, and easy to burn and collapse.

Active Publication Date: 2017-01-04
SHAOGUAN LIANBANG ENVIRONMENTALLY FRIENDLY NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a fire occurs in a tunnel, the temperature is generally above 1000°C. The masonry of the tunnel cannot withstand such a high temperature, and the serious part is easy to burn down. In addition, the tunnel environment is relatively airtight and the density of people is high. Once a fire occurs, evacuation and fighting are very difficult and easy. Cause heavy casualties and property losses, so it is very important to carry out fire prevention treatment for tunnels

Method used

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  • Fireproof coating for tunnel and preparation method thereof
  • Fireproof coating for tunnel and preparation method thereof
  • Fireproof coating for tunnel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Table 1 Raw material ratio

[0031]

[0032] The coating preparation method is:

[0033] (1) sieve the expanded vermiculite 1-3mm to remove coarse particles;

[0034] (2) Add sulfoaluminate cement, silica gel powder, mica powder into a dry powder mixer, gradually add polyethylene glycol 2000 during stirring, then add additives, and finally add other raw materials, mix evenly, and obtain a coating.

Embodiment 2

[0036] Table 2 Raw material ratio

[0037]

[0038]

[0039] The coating preparation method is:

[0040] (1) sieve the expanded vermiculite 1-3mm to remove coarse particles;

[0041] (2) Add sulfoaluminate cement, silica gel powder, mica powder into a dry powder mixer, gradually add polyethylene glycol 2000 during stirring, then add additives, and finally add other raw materials, mix evenly, and obtain a coating.

Embodiment 3

[0043] Table 3 Raw material ratio

[0044]

[0045] The coating preparation method is:

[0046] (1) sieve the expanded vermiculite 1-3mm to remove coarse particles;

[0047] (2) Add sulfoaluminate cement, silica gel powder, mica powder into a dry powder mixer, gradually add polyethylene glycol 2000 during stirring, then add additives, and finally add other raw materials, mix evenly, and obtain a coating.

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Abstract

The invention relates to the technical field of coatings, in particular to a fireproof coating for a tunnel and a preparation method thereof. The fireproof coating is prepared from 42.5R sulfur aluminate cement, silica sol, expanded vermiculite, mica powder, polyethylene glycol 2000, hydroxypropyl methyl cellulose, a flame retardant system and a coating additive. The coating has good bonding strength with concrete, is quick to solidify and dry in a damp environment, accords with environmental protection requirements, does not decompose and release toxic or harmful gases at high temperature, has excellent water resistance, alkali resistance, freeze-thaw resistance and resistance to heat and humidity and has long fire-resistant time.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a fireproof coating for tunnels and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the acceleration of urban construction and the rapid increase of the floating population, the construction and improvement of transportation is particularly important. Tunnels are favored by planners and builders because of the shortest distance to achieve the goal, the least footprint, the least damage to the natural environment and landscape, and low cost. However, the tunnel structure is generally made of stones and reinforced concrete. When the temperature rises to 600°C, the strength of the concrete will lose more than 50%, and the yield stress of the steel will drop to less than 1 / 3 of the yield stress at room temperature. When a fire occurs in a tunnel, the temperature is generally above 1000°C. The tunnel masonry cannot with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/18C09D1/08C09D7/12
CPCC09D1/08C09D5/18C09D7/61C09D7/63C09D7/65C09D7/70
Inventor 郑玉峰孙玉莲梁泽军
Owner SHAOGUAN LIANBANG ENVIRONMENTALLY FRIENDLY NEW MATERIALS CO LTD
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