Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Highway tunnel fireproof coating capable of preventing layered falling off and application

A technology for fire retardant coatings and highway tunnels, applied in the directions of fire retardant coatings, cement coatings, coatings, etc., can solve the problems of delamination, construction difficulties, low bonding strength, etc. Good fire resistance and heat insulation

Inactive Publication Date: 2019-05-17
重庆清徽节能环保科技有限公司
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] And now the main defect of domestic tunnel fire protection has the following points: 1) the coating is too thick
If the temperature rises according to the ISO 834 curve, the fire resistance performance reaches 12 Coatings Technology&Abstracts CoatingsReview CoatingsReview 3h, and the general coating thickness needs to be about 20-30mm; due to the thick coating, it needs to be sprayed many times, and the construction is difficult. The hydrogen curve rises in temperature, and the tunnel fireproof coating cannot withstand the thermal shock of rapid temperature rise, and may burst within a few minutes, which cannot meet the special fireproof requirements of the tunnel; 2) The bond strength is low
The bonding strength of tunnel fireproof coatings is generally 0.1MPa. When vehicles pass through the tunnel, strong winds and vibrations will be generated, which cannot meet the actual needs of the tunnel; 3) No attention has been paid to the research of coating toxicity. Tunnel repair; 4) Poor water resistance, the coating is in the humid environment of the tunnel for a long time, and it will accumulate water or even fall off
[0006] Therefore, in order to solve the above defects, especially mainly solve the problem of delamination and shedding caused by the low bond strength of tunnel fire retardant coatings, the present invention proposes a road tunnel fire retardant coating that prevents delamination and detachment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Highway tunnel fireproof coating capable of preventing layered falling off and application
  • Highway tunnel fireproof coating capable of preventing layered falling off and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of road tunnel anti-delamination fireproof coating, described fireproof coating comprises Portland cement-hollow microsphere 45 parts, magnesium hydroxide-tin oxide 20 parts (particle size is 1mm), silicic acid 10 parts of sodium, 0.5 parts of sodium silicate chloride, 1 part of fatty alcohol sulfonate, 2 parts of vinyl acetate emulsion, 5 parts of sepiolite-mica, 0.5 part of pigment and filler. The fire retardant coating of the above formula needs to be mixed with distilled water at a ratio of 1:1.

Embodiment 2

[0031] A kind of road tunnel anti-delamination fireproof coating, described fireproof coating comprises Portland cement-high alumina cement 47 parts, magnesium hydroxide-N-P composite flame retardant 25 parts by weight (particle diameter is 1.25mm ), 15 parts of sodium hydroxide, 1.0 parts of sodium silicate chloride, 1.5 parts of fatty alcohol sulfonate, 3.5 parts of vinyl acetate emulsion, 7.5 parts of sepiolite-glass fiber, and 0.75 parts of pigment and filler. The fire retardant coating of the above formula needs to be mixed with distilled water at a ratio of 1:1.

Embodiment 3

[0033] A kind of road tunnel anti-delamination fireproof coating, described fireproof coating comprises Portland cement-high grade cement 50 parts, magnesium hydroxide-tin oxide 30 parts (particle size is 1.5mm), silicon 20 parts of sodium hydroxide-sodium hydroxide, 1.5 parts of sodium silicate chloride, 2 parts of fatty alcohol sulfonate, 5 parts of vinyl acetate emulsion, 10 parts of mica-glass fiber, and 1 part of pigment and filler. The fire retardant coating of the above formula needs to be mixed with distilled water at a ratio of 1:1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of coatings, and particularly relates to a highway tunnel fireproof coating capable of preventing layered falling off and an application. The fireproof coating is prepared from components in parts by weight as follows: 45-50 parts of a binding agent, 20-30 parts of a flame retardant, 10-20 parts of an exciting agent, 0.5-1.5 parts of a waterproof agent,1-2 parts of an air entraining agent, 2-5 parts of a dispersing agent, 5-10 parts of an auxiliary binding agent and 0.5-1 part of pigment and filler, and the fireproof coating is required to be mixedwith distilled water in a ratio being 1:1 for use during preparing. The highway tunnel fireproof coating capable of preventing layered falling off has the advantages of light volume weight, low thermal conductivity and good fire insulation, particularly high bonding strength, is not prone to layered falling off and has good waterproof performance, thereby being suitable for both fireproofing of inner walls of highway tunnels and fireproofing of railway tunnels and petrochemical engineering.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a road tunnel fireproof coating which prevents delamination and shedding and its application. Background technique [0002] The ever-increasing volume of traffic and the complexity of transporting goods increases the risk of fire in road tunnels. At present, the more economical and feasible fire prevention method is to spray special fireproof coatings for tunnels on the concrete surface of tunnels. Tunnel fireproof coating is a special coating specially designed to protect tunnel walls and vaults from burning in fire. It can not only meet the fire protection requirements of tunnels, but also play the role of tunnel interior decoration. A large number of data show that frequent fires in highway tunnels during the operation stage have caused huge social impact and economic losses. [0003] According to the characteristics of the fire and the requirements of the tunne...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/08C09D5/18C09D7/61
Inventor 刘佶鑫
Owner 重庆清徽节能环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products