High-strength hollow thermal-insulating building material and application thereof

Abstract

The invention discloses a high-strength hollow thermal-insulating building material. The specific preparation process is as follows: 1) preparing hydrolyzed plastic microsphere; 2) preparing molding slurry; 3) filling the molding slurry into the hydrolyzed plastic microsphere; 4) drying the filled plastic microsphere in a drying chamber at 80-85 DEG C; 5) preparing a coating solution; 6) uniformlycoating a layer of coating solution on the surfaces of the filled plastic microsphere; 7) baking the dried coated microspheres, thereby acquiring high-strength porous hollow microsphere. A netted hollow structure is formed in the material prepared according to the invention; an inner support structure of the porous hollow microspheres is mainly prepared from silicon dioxide and aluminum oxide, sothat the heat-conducting property is low; due to a duct structure in the microsphere, when the heat is conducted by a plurality of ducts after passing by the porous hollow microsphere, the heat is gradually reduced and is low when the heat is finally transferred to a wall surface, so that the heat insulation effect is achieved in winter and summer.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a high-strength hollow heat-insulating building material and its application. Background technique [0002] Solar energy plays a vital role in the thermal environment and energy consumption of buildings. Infrared rays, which account for about 50% of the total solar energy, have a significant thermal effect on buildings. In summer, under the sun exposure, the surface of the building will continue to accumulate energy, resulting in a continuous increase in the surface and internal temperature. The energy consumption of air conditioners and other devices will increase accordingly, but it is difficult to obtain a lasting indoor temperature effect. At the same time, in the case of heating in winter, indoor When the temperature rises, when the temperature difference between indoor and outdoor is large, the heat in the room is easy to dissipate, making the room not insulated, so the heat...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength hollow heat-insulating building material and its application. The interior of the material is a reticular hollow structure. Since the internal support structure of the porous hollow microspheres is mainly prepared by silicon dioxide and aluminum oxide, it has Low thermal conductivity, and due to the pore structure inside the microspheres, when the heat passes through the hollow microspheres and then conducts through multiple channels, the heat decreases step by step, and the heat is lower when it is finally transferred to the surface of the wall, thus making this The thermal conductivity of the thermal insulation coating made of the material is as low as 0.013W(m.k) -1 , to achieve heat insulation in winter and summer, and solve the problem that the existing architectural coatings cannot achieve indoor heat preservation in winter. Relying on the reflection of solar energy on the surface of the wall cannot achieve the heat insulation performance of the building well

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