Tunnel fireproof paint and its manufacturing technology

A technology for fire-resistant coatings and tunnels, which is applied in the direction of fire-resistant coatings and coatings. It can solve the problems of insufficient adaptability to high and low temperature changes in strength, flexibility, water resistance, and acid corrosion resistance, so as to inhibit rapid evaporation and reduce quality problems. Improve the effect of tension

Inactive Publication Date: 2004-11-10
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The manufacture of tunnel fireproof coatings reported above all use inorganic substances such as sodium silicate, cement, white cement, high alumina cement, and phosphate as binders; Soil, fly ash glass beads, sepiolite powder, talcum powder, etc. are used as filler aggregates; glass fiber, steel fiber, polypropylene fiber, etc. are used

Method used

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  • Tunnel fireproof paint and its manufacturing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: 25.0Kg of high-grade cement, 6.2Kg of aluminum tripolyphosphate, 6.5Kg of water glass, 7.5Kg of expanded perlite, 5.0Kg of fly ash glass beads, 2.5Kg of mica powder, 3.7Kg of kaolin, aluminum silicate Add 3.7Kg of fiber, 18.0Kg of aluminum hydroxide, and 16.7Kg of magnesium hydroxide into the mixer in turn and mix evenly, add a small amount of water to infiltrate, then add 5Kg of polyvinyl acetate emulsion, and stir evenly. The inspection methods and inspection items of fire retardant coatings are the same as Table 1. Fire resistance: coating thickness 10mm, fire resistance limit 150min; surface dry time: 3.2h; bonding strength: 0.42Mpa; density: 560Kg / m 3 ; Thermal conductivity: 0.115W / (m·k); Other performance indicators are qualified.

Embodiment 2

[0017] Embodiment 2: 26.0Kg of high-grade cement, 6.8kg of aluminum tripolyphosphate, 6.5Kg of water glass, 9.5Kg of expanded perlite, 7.5Kg of fly ash glass beads, 2.8Kg of mica powder, 4.5Kg of kaolin, aluminum silicate Add 4.3Kg of fiber, 19.6Kg of aluminum hydroxide, and 18.5Kg of magnesium hydroxide to the mixer in turn, mix evenly, add a small amount of water to infiltrate, then add 8.6Kg of acrylate polymer emulsion, and stir evenly. The inspection methods and inspection items of fire retardant coatings are the same as Table 1. Fire resistance: coating thickness 10mm, fire resistance limit 160min; surface dry time: 3.0h; bonding strength: 0.48Mpa; density: 500Kg / m 3 ; Thermal conductivity: 0.114W / (m·k); Other performance indicators are qualified.

Embodiment 3～5

[0018] Embodiment 3~5: the basic formula of fireproof coating and preparation method are the same as embodiment 2, only change the consumption of polymer emulsion, aluminum silicate fiber, expanded perlite, fly ash glass microsphere, result is listed in table 2 (weight share).

[0019] Table 2

[0020]

[0021] *Remarks: 1. The thickness of the coating is 10mm, and the rest of the technical performance indicators are in line with the relevant regulations in Table 1. 2. (E1), (E2), and (E3) in Table 2 refer to polyvinyl acetate emulsion, acrylate polymer emulsion, and styrene-acrylic emulsion, respectively.

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Abstract

The invention relates to a tunnel fire-resisting paint whose constituents and proportion by weight are, silicate, phosphate adhesive 37.7-43.3, polymer emulsion 5-10, skeletal material 18.7-34.9, fortifying fiber 3.7-6.2, and combustion inhibitor 34.7-50. The invention increases the adhesion property of the fire-resisting coating layer with the internal walls of the tunnel reinforced concrete, and improves the tension resistance and bending strength for the fire-resisting coating layer.

Description

(1) Technical field [0001] The invention relates to a tunnel fireproof coating and a manufacturing process thereof. (2) Background technology [0002] With the development of my country's economic construction, the circulation of materials and personnel between cities has increased rapidly, accompanied by the increase in the construction of transportation infrastructure such as roads, railways and subways. According to recent reports, my country has 6,875 railway tunnels with a total length of 3,670 kilometers, and 1,780 road tunnels with a total length of 704 kilometers, ranking first in the world. Tunnels not only undertake the task of transportation, but also function as channels for optical cables, cables, and even oil and water pipelines. The reinforced concrete components used as the main building in the tunnel are non-combustible materials, but within a short period of time when a fire occurs, the local temperature of the fire site in the tunnel will quickly rise to ...

Claims

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Application Information

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IPC IPC(8): C09D5/18C09D133/00
Inventor 戴李宗黄晓平李阳庄勋港
Owner XIAMEN UNIV
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