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Water-based phase change heat expansion type flame-retardant and fireproof coating for tunnels and preparation method thereof

A kind of fire-proof coating, expansion technology, applied in fire-proof coating, anti-fouling/underwater coating, starch coating, etc., can solve the problems of front car methanol leakage, large construction thickness, poor material flatness, etc., to prevent temperature rise , Avoid the effect of strength decline and short maintenance period

Active Publication Date: 2018-10-02
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] On March 1, 2014, in the Yanhou Tunnel of the Erguang Expressway, two articulated trains transporting methanol collided rear-end. The methanol in the front car leaked and caught fire. Two other dangerous chemical transport vehicles and 31 coal transport vehicles were stranded in the tunnel. The car and other vehicles were ignited and detonated, resulting in 40 deaths, 12 injuries and 42 vehicles burned, with a direct economic loss of 81.97 million yuan
However, due to the large construction thickness and poor adhesion of the material in the application, the fireproof layer of the tunnel often cracks and falls off, which brings safety hazards to traffic; secondly, the flatness of this material is not good, which affects the appearance of the tunnel

Method used

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  • Water-based phase change heat expansion type flame-retardant and fireproof coating for tunnels and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0047] A water-based phase change endothermic expansion type tunnel flame retardant fireproof coating of the present invention, its preparation method comprises the following steps:

[0048] (1) Heat 8.0kg of expanded perlite in the reactor to 80°C, and simultaneously vacuumize to 40kPa, keep warm and vacuumize for 20min, then add 20kg of mannitol and 10kg of galactose melted under the protection of nitrogen, and keep warm for 80°C under the protection of nitrogen. React at ℃ for 60 minutes, cool the product to room temperature, add 200g of hydroxy silicone oil, and grind it in a planetary ball mill for 2.0 hours to obtain expanded perlite loaded mannitol-galactose;

[0049] (2) Add 12kg of melamine and 2.0L of 0.5mol / L NaOH solution into the reactor, stir evenly, slowly add 8.0L of 37% formaldehyde under stirring, heat up to 50°C for the first stirring and reflux reaction for 120min, Obtain melamine formaldehyde prepolymer; 40kg lignin is added in the reaction kettle, add 11k...

Embodiment 2

[0054] A water-based phase change endothermic expansion type tunnel flame retardant fireproof coating of the present invention, its preparation method comprises the following steps:

[0055] (1) Heat 8.0kg of expanded perlite in the reactor to 80°C, and simultaneously vacuumize to 40kPa, keep warm and vacuumize for 20min, then add 20kg of mannitol and 10kg of galactose melted under the protection of nitrogen, and keep warm for 80°C under the protection of nitrogen. React at ℃ for 60 minutes, cool the product to room temperature, add 200g of hydroxy silicone oil, and grind it in a planetary ball mill for 2.0 hours to obtain expanded perlite loaded mannitol-galactose;

[0056] (2) Add 12kg of melamine and 2.0L of 0.5mol / L NaOH solution into the reactor, stir evenly, slowly add 8.0L of 37% formaldehyde under stirring, heat up to 50°C for the first stirring and reflux reaction for 120min, Obtain melamine formaldehyde prepolymer; 40kg lignin is added in the reaction kettle, add 11k...

Embodiment 3

[0061] A water-based phase change endothermic expansion type tunnel flame retardant fireproof coating of the present invention, its preparation method comprises the following steps:

[0062] (1) Heat 8.0kg of expanded perlite in the reactor to 80°C, and simultaneously vacuumize to 40kPa, keep warm and vacuumize for 20min, then add 20kg of mannitol and 10kg of galactose melted under the protection of nitrogen, and keep warm for 80°C under the protection of nitrogen. React at ℃ for 60 minutes, cool the product to room temperature, add 200g of hydroxy silicone oil, and grind it in a planetary ball mill for 2.0 hours to obtain expanded perlite loaded mannitol-galactose;

[0063] (2) Add 12kg of melamine and 2.0L of 0.5mol / L NaOH solution into the reactor, stir evenly, slowly add 8.0L of 37% formaldehyde under stirring, heat up to 50°C and stir for the first reflux reaction for 120min, Obtain melamine formaldehyde prepolymer; 40kg lignin is added in the reaction kettle, add 11kg 85...

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Abstract

The invention discloses a water-based phase change heat expansion type flame-retardant and fireproof coating for tunnels. The raw materials of the coating comprise the following components: expanded perlite supported mannitol-galactose, melamine-phosphoric acid modified lignin, expanded graphite supported chlorinated paraffin, gelatinized starch, light calcined magnesia, magnesium chloride, a polyoxyethylene ether oleate dust preventive, an organic silicon defoamer, hydroxyl silicone oil, amino silicon oil, waterborne polyurethane, nano tin dioxide, titanium dioxide, a filler, aluminum silicate and a polyether-modified polydimethylsiloxane flatting agent. The flame-retardant and fireproof coating absorbs latent heat to resist temperature rise at an initial stage of fire, forms an expandedfoam carbon layer to isolate heat under a high-temperature effect, prevents temperature rise of a tunnel concrete structure, avoids reduction in strength of the tunnel concrete structure, and is thinin coating, high in construction speed, short in maintenance cycle, excellent in water resistance and applicable to a dark and humid environment of the tunnel.

Description

technical field [0001] The invention belongs to the field of functional paint manufacturing, and in particular relates to a water-based phase-change heat-absorbing expansion tunnel flame-retardant fireproof paint and a preparation method thereof. Background technique [0002] On March 1, 2014, in the Yanhou Tunnel of the Erguang Expressway, two articulated trains transporting methanol collided rear-end. The methanol in the front car leaked and caught fire. Two other dangerous chemical transport vehicles and 31 coal transport vehicles were stranded in the tunnel. Cars and other vehicles were ignited and detonated, resulting in 40 deaths, 12 injuries and 42 vehicles burned, with a direct economic loss of 81.97 million yuan. [0003] Once a fire breaks out in the tunnel, it will not only cause casualties and vehicle losses, but also cause harm to the tunnel, an important infrastructure that is related to the lifeline of the local economy—severe cases may cause structural damage...

Claims

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Application Information

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IPC IPC(8): C09D103/02C09D197/00C09D175/04C09D183/04C09D183/08C09D5/18C09D5/14C09D7/61C09D7/65C09D7/63
CPCC08K2003/222C08K2003/2231C08K2003/2241C08K2201/011C08K2201/014C08L2201/02C08L2205/02C08L2205/025C08L2205/035C09D5/14C09D5/185C09D7/61C09D7/63C09D7/65C09D7/70C09D103/02C08L97/00C08L75/04C08L83/08C08L83/04C08L71/02C08K13/06C08K9/12C08K5/053C08K3/22C08K3/16C08K3/346C08K7/28C08K5/1545C08K7/24
Inventor 胡云楚王文磊袁利萍王琼黄自知文瑞芝吴袁泊李慧陈秋菊杨田丽
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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