Vacuum insulation panel core material with high performance and low cost and manufacturing method thereof

Abstract

The invention discloses a method for manufacturing a vacuum insulation panel core material with high performance and low cost. The method comprises the following steps of: pulping glass fiber cotton which is produced by a centrifuge method; diluting; screening; performing dehydration molding; performing pressure roller sizing; performing vacuum negative pressure dehydration; drying; cooling; and cutting. In the manufacturing method, the glass fiber cotton which is completely produced by the centrifuge method is used as a raw material of the vacuum insulation panel core material with high performance and low cost, the coefficient of thermal conductivity of the produced vacuum insulation panel core is between 0.003 and 0.008 W / m.k, and the coefficient of heat insulation is greatly improved;the thickness of the panel core material is between 0.5 and 30 mm, and the thickness is thinner; and the glass fiber cotton with the diameter of 3.5 to 5 mu m and the length of 5 to 20 mm has low cost and low overall manufacturing cost, and the overall cost of the vacuum insulation panel is lowered.

Description

technical field [0001] The invention relates to a high-performance and low-cost vacuum insulation board core material and a manufacturing method thereof, in particular to a manufacturing method using glass fiber cotton as a raw material. Background technique [0002] At present, vacuum insulation panels have been used in many fields. It meets customers' requirements for new materials with excellent characteristics such as energy saving, low carbon, environmental protection, and safety. In order to obtain the above-mentioned characteristics, the selection and production method of the core material inside the vacuum insulation panel have a great influence on it. The core material is generally made of porous media materials, such as airgel, microporous polyurethane, silica powder, stone fiber wool, Fiberglass etc. For the core material of the vacuum insulation panel, it must have the following four characteristics: 1. It can support the vacuum insulation panel under high vacuu...

AI Technical Summary

Problems solved by technology

[0003] At present, due to the difference in material selection and production methods for the core material of vacuum insulation panels, the vacuum insulation panels produced by different core materials are used in different fields. For storage room insulation and building exterior wall insulation, it is required to have good thermal resistance and thermal conductivity. For materials with low coefficients, the thermal conductivity of most vacuum insulation panels is between 0.01-0.02W / m.K, and the core material of vacuum insulation panels is bulky, generally between 1cm-5cm in thickness, and is used for storage rooms After thermal insulation and building exterior wall insulation, under the same volume, not only the storage room and the internal use area of ​​the building are reduced, but also the insulation life is shortened