Core material manufacturing method, core material and vacuum heat-insulating plate

Abstract

The invention provides a core material manufacturing method, a core material and a vacuum heat-insulating plate. The core material manufacturing method comprises the steps: adding a predetermined volume of water in a batching tank; adjusting the pH of the water to acidic, and carrying out stirring and standing; adding a predetermined amount of fiber dispersant in the batching tank, and carrying out stirring; chopping glass fiber cotton with predetermined beating degree into strip-shaped glass fiber cotton with predetermined width; adding a predetermined amount of strip-shaped glass fiber cotton into the batching tank according to a first preset speed; soaking the strip-shaped glass fiber cotton for first preset time, and then, stirring the mixture in the batching tank for second preset time at a second preset speed; transferring the mixture to a stock chest, carrying out storage, and then, carrying out dewatering; carrying out compression molding on the mixture; drying the molded mixture, thereby obtaining the core material. According to the core material manufacturing method, the wasting of energy sources can be effectively reduced, the product cost is reduced, and thus, the vacuum heat-insulating plate with the core material has higher market competitiveness.

Description

technical field [0001] The invention relates to the technical field of vacuum insulation panels, in particular to a method for manufacturing a core material, a core material and a vacuum insulation panel. Background technique [0002] At present, in related technologies, the core material of vacuum insulation panels is mainly wet-formed, but the high cost of wet-formed core materials limits the application of vacuum insulation panels in actual products; in the core material manufacturing process, Glass fibers are easy to agglomerate in the slurry, which reduces the uniformity and dispersion stability of the slurry. There are a large number of agglomerated fibers in the core material after molding and drying, resulting in rough surface and poor flatness of the core material; and, the core material after molding Due to fiber agglomeration and its inherent moisture content, the vacuum pressure inside the vacuum insulation panel rises rapidly, which not only affects the surface ...

AI Technical Summary

Problems solved by technology

[0002] At present, in related technologies, the core material of vacuum insulation panels is mainly wet-formed, but the high cost of wet-formed core materials limits the application of vacuum insulation panels in actual products; in the core material manufacturing process, Glass fibers are easy to agglomerate in the slurry, which reduces the uniformity and dispersion stability of the slurry. There are a large number of agglomerated fibers in the core material after molding and drying, resulting in rough surface and poor flatness of the core material; and, the core material after molding Due to fiber agglomeration and its inherent moisture content, the vacuum pressure inside the vacuum insulation panel rises rapidly, which not only affects the surface flatness of the vacuum insulation panel, but also causes the initial thermal conductivity of the vacuum insulation panel to be high, resulting in uneven service life and surface roughness. not meet the requirements

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