Novel energy-saving door leaf and preparation method thereof

Abstract

The invention discloses a novel energy-saving door leaf and a preparation method thereof. The novel energy-saving door leaf comprises a metal frame, the metal frame is internally provided with a foamconcrete lower face body, a gridding light steel skeleton layer and a foam concrete upper face body in sequence from bottom to top, and grid grooves in the light steel skeleton layer and a gap betweenthe light steel skeleton layer and the interior of the door leaf are filled with heat-preservation fireproof mortar. The novel energy-saving door leaf is excellent in fireproof performance, and the requirement for GB8624-2012 specified Al-level combustion performance of a building material and a product is met; heat insulation performance is excellent, the heat conducting coefficient is as low as0.036-0.083 W / m.K; no hazardous smoke is generated, and the toxicity of the generated smoke conforms to the GB / T20285-2006 specified AQ1 safety level; the sound insulation effect is good, and the weighted sound insulation index reaches up to 41-59 dB; and anti-impact performance is good, the amount of concave deformation generated after nine times of soft impact loading action of a 30 kg of sandbag is 3.2-4.7 mm, and the b-level standard (less than or equal to 5.0 mm) in GB 17565-2007 specified antitheft door soft impact performance classification is met.

Description

technical field [0001] The invention belongs to the technical field of building doors, and in particular relates to a novel energy-saving door leaf and a preparation method thereof. Background technique [0002] Door is a kind of entity commonly used in people's daily life to divide limited space. Its types can be divided into fire doors, thermal insulation doors, soundproof doors, etc. according to their functions. They are widely used in schools, residential buildings, shopping malls and other places. Most of the existing doors have a single function, which is difficult to meet the needs of hospitals, schools, offices and many other places for multiple functions such as fire prevention, sound insulation, and heat insulation. However, due to the high thermal conductivity, when a fire occurs, it will quickly transfer the heat from the fire-facing surface to the back-fired surface, causing the temperature of the back-fired surface to rise sharply, which cannot meet the heat i...

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Problems solved by technology

Most of the existing doors have a single function, which is difficult to meet the needs of hospitals, schools, offices and many other places for multiple functions such as fire prevention, sound insulation, and heat insulation. However, due to the high thermal conductivity, when a fire occurs, it will quickly transfer the heat from the fire-facing surface to the back-fired surface, causing the temperature of the back-fired surface to rise sharply, which cannot meet the heat insulation requirements; the hollow door body is filled with solid sound-insulating materials Although the door leaves made of rock wool and expanded perlite can achieve good sound insulation effect, they are prone to gaps or dead ends caused by insufficient filling, which makes their thermal insulation performance poor. During the heating in winter and cooling in summer, there will be Increase the consumption of heating or cooling in the space divided by the door leaf, resulting in waste of energy and aggravation of environmental problems, and the use of rock wool, expanded perlite, etc. needs to be consolidated by adding polymer adhesives, which are easy to release during fire. Toxic and irritating fumes seriously endanger the lives of the affected people

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