Foam glass composite air duct board and manufacturing method thereof

Abstract

The invention relates to an air duct board, in particular to a foam glass composite air duct board which has sandwich structure and comprises a metal surface layer, a fireproof or corrosion-preventionsurface layer, and a foam glass layer, wherein the metal surface layer is taken as the outer surface of the air duct, the fireproof or corrosion-prevention surface layer is taken as the inner surfaceof the air duct, and the foam glass layer is taken as core material, and the three layers are closely adhered together by two bonding layers. Compared with the prior art, the invention adopts the foam glass which has the advantages of low volume weight, small coefficient of heat conductivity, no water vapor permeability, no water absorption, no combustion, no mouldness, no mouse bite, high mechanism strength, easy processing and like as the core material, thus causing the composite air duct not only to meet various requirements of the traditional composite air duct board, but also fully to meet the sustainably developing building fire-proof requirements of super high buildings, underground projects such as subway and the like, and highly crowded places such as railway station and the like, and representing the development trend of the composite air duct board.

Description

technical field [0001] The invention relates to an air duct plate, in particular to a foam glass composite air duct plate and a manufacturing method thereof. Background technique [0002] Foam glass is a new type of inorganic heat-insulating material with a uniform independent closed air gap structure, which is made of glass as the main raw material, mixed with an appropriate amount of foaming agent, heated and roasted in a high-temperature tunnel kiln, and annealed and cooled. Because it completely retains the chemical stability of inorganic glass, it has low bulk density, small thermal conductivity, impermeability, no water absorption, no combustion, no mildew, no rat bite, high mechanical strength but easy processing, and can withstand the removal of hydrogen fluoride. All other chemical attack. Foam glass is not only non-toxic, stable in chemical properties, and has good thermal insulation properties that will not deteriorate in a wide temperature range from ultra-low t...

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Problems solved by technology

[0003] At present, the widely used composite air duct panels mainly use phenolic foam as the core material. Although it does not burn in an open flame, because it is an organic material, when a fire occurs, the high temperature formed when other flammable building materials burn will promote the decomposition of phenolic foam. , produce a certain amount of harmful gas, which affects the escape of personnel; moreover, for the sustainable development of super high-rise buildings, underground projects such as subways, railway stations and other highly densely populated places, traditional composite air duct panels are no longer suitable for application, especially for related buildings. Design Fire Requirements

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