Dry vacuum insulated panel and production method thereof

Abstract

The invention discloses a vacuum insulated panel and a production method thereof. The vacuum insulated panel comprises a core material and an aluminum film bag, wherein the core material consists of the following components in parts by mass: 50-70 parts of SiO2, 0-7 parts of Al2O3, 2-15 parts of CaO, 0-6 parts of MgO, 8-20 parts of Na2O+K2O, 5.5-15.5 parts of B2O3, 0.1-7.0 parts of ZnO, and not more than 1.0 part of other components. The production process of the insulated panel comprises the steps of cotton cutting, punching, drying, cotton conveying, cotton loading, packaging and rolling. The heat conductivity coefficient of the dry vacuum insulated panel is below 0.0025 w / m.k; the method improves the operator production environment, and reduces the company dust treatment cost; in addition, as the core material of the dry vacuum insulated panel is an inorganic glass fiber with a longer length, and can be directly recovered to a kiln as a raw material for recycling, the dry vacuum insulated panel is a green product having the advantages of environment protection, heat insulation, heat preservation, sound absorption and energy conservation.

Description

technical field [0001] The invention relates to the technical field of heat insulation materials, in particular to a dry-process vacuum heat insulation panel and a manufacturing method thereof. Background technique [0002] The dry-process vacuum insulation panel with ultra-fine glass fiber as the core material is the best cost-effective A-level inorganic non-combustible material among the known solid insulation materials. It has a broad application market in thermal insulation and barrier. It is mainly used in refrigerators, Freezers, refrigerated containers, freezers, medical cold preservation equipment, vending machines and other facilities and equipment can efficiently and conveniently achieve energy saving and cold preservation effects. In China, the application has not been widely used, and the existing organic materials not only have a combustion level that cannot reach Class A , the thermal conductivity is basically in the range of 0.01-0.02W / m.k, and the energy-savi...

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Problems solved by technology

[0002] The dry-process vacuum insulation panel with ultra-fine glass fiber as the core material is the best cost-effective A-level inorganic non-combustible material among the known solid insulation materials. It has a broad application market in thermal insulation and barrier. It is mainly used in refrigerators, Freezers, refrigerated containers, freezers, medical cold preservation equipment, vending machines and other facilities and equipment can efficiently and conveniently achieve energy saving and cold preservation effects. In China, the application has not been widely used, and the existing organic materials not only have a combustion level that cannot reach Class A , the thermal conductivity is basically in the range of 0.01-0.02W / m.k, and the energy-saving and heat-insulating effect is only about 10% of that of vacuum insulation panels. At present, there is a production process of making vacuum insulation panels by wet method in China, which needs to add water to make pulp, and then lay the panels to filter out Water, then dehydration, and finally high-temperature drying, the water content is reduced to below 0.4%, and then cut, the production process not only greatly increases the energy consumption, but also the thermal conductivity of the vacuum insulation panel is always above 0.0025w / m.k