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Fire prevention and smoke evacuation air pipe made from concrete of chlorine, oxygen and magnesium

A technology of magnesium oxychloride cement and a production method, which is applied in the directions of pipes, rigid pipes, heating methods, etc., can solve the problems of large thermal conductivity of metal materials, cannot be used, and are expensive, and achieve excellent fire resistance, convenient installation and reasonable structure. Effect

Inactive Publication Date: 2003-05-07
支亮
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2) The cotton pad on the surface of the air duct has not been ignited (the temperature is lower than 200°C);
[0007] To achieve the above indicators, usually metal materials cannot be used at all due to excessive thermal conductivity, and no products of non-metal materials have been put into the market.
Therefore, at present, domestic high-temperature-resistant fire-resistant smoke exhaust ducts, such as Zhejiang Qinshan Nuclear Power Station and Guangdong Daya Bay Nuclear Power Station, all use expensive foreign products

Method used

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  • Fire prevention and smoke evacuation air pipe made from concrete of chlorine, oxygen and magnesium
  • Fire prevention and smoke evacuation air pipe made from concrete of chlorine, oxygen and magnesium

Examples

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Effect test

Embodiment 1

[0020] Embodiment 1: compound glue

[0021] Select magnesia: 100 parts, magnesium chloride: 35 parts, wood fiber: 50 parts, phosphoric acid: 0.5 parts, and perform mechanical mixing until it becomes cement.

Embodiment 2

[0022] Example 2: Making

[0023] According to the size of the fire and smoke exhaust duct, wood is used to make a mold tire in advance, and then the cement and refractory fiber cloth are layered on the mold tire layer by layer. When the thickness is 2mm-10mm, a layer of fireproof is added on the cement Insulation material, and then compound cement and refractory fiber cloth on the refractory insulation material until the specified thickness requirement is reached. After curing and drying, take off the molded tire to form a fire-proof and smoke-exhaust air duct.

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Abstract

This invention discloses a MgCl2, MgO cement fire-proof smoke exhaust wind pipe and its processing method taking MgCl2, MgO as raw materials and phosphorus acid as the addition agent to make up daub by mechanical mixing and coat daub and fire-proof fiber cloth on prepared wine die block for 2mm-10mm to be covered by fire-resistant insulation material to be coated with daub and fiber cloth for 2-10 mm to be cured and demoulded to finish fire-proof smoke exhausting wind pipes.

Description

1. Technical field [0001] The invention relates to a magnesium oxychloride cement fireproof smoke exhaust air duct and a manufacturing method thereof, belonging to the technical field of fireproof building materials. 2. Background technology [0002] Fire and smoke exhaust ducts are widely used in fire and smoke exhaust facilities such as high-rise buildings, underground projects, and nuclear power plants. According to the requirements of the national GB17428-1998 standard, under the condition that the maximum ventilation temperature reaches 1000°C and the fire resistance time exceeds 1.5 hours, the fire-resistant smoke exhaust duct must meet several requirements: [0003] 1) There should be no flames on the surface of the air duct; [0004] 2) The cotton pad on the surface of the air duct has not been ignited (the temperature is lower than 200°C); [0005] 3) There should be no cracks in the air duct; [0006] 4) There is no collapse of the air duct. ...

Claims

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Application Information

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IPC IPC(8): C04B28/32F16L9/14
CPCC04B2111/28C04B28/32F24F2221/30C04B2111/00612Y02W30/91C04B18/26C04B22/165
Inventor 支亮
Owner 支亮