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Intumescent fireproof paint for tunnel

A fire retardant coating and intumescent technology, applied in fire retardant coatings, cement coatings, coatings, etc., can solve the problems of coating peeling, reduction of tensile strength and tension of steel wire mesh, easy corrosion of steel wire, etc. Good sound absorption and strong bonding effect

Inactive Publication Date: 2017-06-13
合肥英索莱特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once such a heavy peeling coating falls off and hits a vehicle running at high speed in the tunnel, there will be serious consequences
Moreover, moisture or water seepage in tunnels is a worldwide problem. Steel wires are prone to rust under long-term moisture, and the tensile strength and tension of the corroded steel wire mesh will decrease. Once the steel wire mesh loses its pulling effect due to corrosion, the coating may also fall off. catastrophic consequences

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: A kind of expansive tunnel fireproof coating, the raw material according to weight percentage comprises: 15% refractory cement, 15% AEC expansion cement, 8% polyacrylate emulsion, 10% polyvinyl acetate emulsion, 8% silicone acrylic emulsion, 8% melamine formaldehyde resin, 5% dispersed latex powder, 2% aluminum hydroxide powder, 2% perlite powder, 3% fly ash, 2% melamine fiber, 2% polyphenylene sulfide, 2% polyether ether ketone, 1% ammonium polyphosphate, 2% fatty alcohol polyoxyethylene ether, 5% kaolin, 5% nano TiO 2 , 5% nano-SiO 2 .

[0010] Further, the particle diameter of the perlite powder is 10-500um.

[0011] According to the above ratio, the dry coating thickness of the paint obtained is 2.0 mm, and the self-weight per square meter is only about 210 grams, which meets the construction requirements. The coating has high toughness and is firmly bonded to the surface of the tunnel lining, and will not fall off in strong wind or vibration enviro...

Embodiment 2

[0012] Embodiment 2: A kind of expansion type tunnel fireproof coating, the raw material according to weight percentage comprises: 10% refractory cement, 15% AEC expansion cement, 10% polyacrylate emulsion, 15% polyvinyl acetate emulsion, 10% silicone acrylic emulsion, 5% melamine formaldehyde resin, 7% dispersed latex powder, 1% aluminum hydroxide powder, 1% perlite powder, 1% fly ash, 1% melamine fiber, 1% polyphenylene sulfide, 3% polyether ether ketone, 1% ammonium polyphosphate, 2% fatty alcohol polyoxyethylene ether, 3% kaolin, 10% nano TiO 2 , 4% nano-SiO 2 .

[0013] Further, the particle diameter of the perlite powder is 10-500um.

[0014] According to the above ratio, the dry coating thickness of the paint obtained is 2.1 mm, and the self-weight per square meter is only about 215 grams, which meets the construction requirements. The bonding strength is 0.5MPa, and the fire resistance limit is 90min.

Embodiment 3

[0015] Embodiment 3: A kind of expansive tunnel fireproof coating, the raw material according to weight percentage comprises: 15% refractory cement, 16% AEC expansion cement, 8% polyacrylate emulsion, 10% polyvinyl acetate emulsion, 6% silicone acrylic emulsion, 6% melamine formaldehyde resin, 6% dispersed latex powder, 1% aluminum hydroxide powder, 2% perlite powder, 2% fly ash, 2% melamine fiber, 2% polyphenylene sulfide, 2% polyether ether ketone, 1% ammonium polyphosphate, 2% fatty alcohol polyoxyethylene ether, 4% kaolin, 9% nano TiO 2 , 6% nano-SiO 2 .

[0016] Further, the particle diameter of the perlite powder is 10-500um.

[0017] According to the above ratio, the dry coating thickness of the paint obtained is 2.1 mm, and the self-weight per square meter is only about 215 grams, which meets the construction requirements. The bonding strength is 0.5MPa, and the fire resistance limit is 90min.

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Abstract

The invention relates to an intumescent fireproof paint for a tunnel. The intumescent fireproof paint is prepared from the following raw materials in percentage by weight: 10-30% of refractory cement, 10-30% of AEC expansive cement, 5-10% of a polyacrylate emulsifier solution, 8-15% of a polyvinyl acetate emulsion, 5-10% of a silicone acrylic emulsion, 5-10% of melamino-formaldehyde resin, 3-7% of disperse latex powder, 1-3% of aluminium hydroxide powder, 1-3% of perlite powder, 1-4% of flyash, 1-3% of melamine fiber, 1-3% of polyphenylene sulfide, 1-3% of polyether-ether-ketone, 1-3% of ammonium polyphosphate, 1-2% of fatty alcohol polyoxyethylene ether, 3-8% of kaolin, 3-10% of nano TiO2 and 3-8% of nano SiO2. According to the intumescent fireproof paint, a drying coating is relatively thin and excellent in bonding strength and fire resistance.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, and in particular relates to an intumescent fireproof coating for tunnels. Background technique [0002] Tunnel fire retardant coatings include non-intumescent tunnel fire retardant coatings and intumescent tunnel fire retardant coatings. As we all know, non-intumescent tunnel fireproof coating is a kind of fireproof coating mainly composed of inorganic materials. The coating itself has high density and high brittleness. In the environment of strong wind and vibration, the coating is easy to fall off. A large number of non-intumescent tunnel fire protection coatings have been reported to be detached from the tunnel lining. Judging from the construction examples of non-intumescent tunnel fireproof coatings in China, there are few construction cases where the coating exceeds 20mm. Even if there are projects where the coating reaches or exceeds 20mm, it needs to be protected by steel mes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D131/04C09D133/04C09D5/18C09D7/12C09D1/08
CPCC09D131/04C08K2201/011C08K2201/014C08L2201/02C08L2205/035C08L2205/16C09D1/08C09D5/185C09D7/61C09D7/65C09D7/70C08L33/04C08L43/04C08K13/04C08K2003/2227C08K2003/323C08K3/346C08K2003/2241C08K3/36
Inventor 倪世宏王华林
Owner 合肥英索莱特新材料科技有限公司
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