Novel glass fiber, glass fiber-based vacuum heat-insulating plate core material, and preparation method of core material

Abstract

The invention discloses novel glass fiber, and a vacuum heat-insulating plate core material prepared from the glass fiber and bonding glue. The glass fiber consists of the following components in parts by mass: 65 to 70 parts of SiO2, 4.5 to 5.0 parts of Al2O3, 1 to 2 parts of CaO, 1 to 2 parts of MgO, 0.5 to 1.5 parts of K2O, 9 to 10 parts of Na2O and 5 to 7 parts of Ba2O3. The invention also discloses a method for preparing the core material. The method comprises the following steps of: 1) selecting the raw materials according to the proportioning; 2) melting the raw materials; 3) performing fibration on the solution in the step 2); 4) performing flame stretching on the fiber in the step 3) to obtain the glass fiber; 5) paving the glass fiber in the step 4) to obtain the core material; 6) vacuumizing the core material in the step 5) on a pad net; 7) gluing the core material in the step 6); and 8) drying. The core material has a high fireproof grade and a better heat-insulating effect, and can be applied in the field of aviation.

Description

technical field [0001] The invention relates to a new type of glass fiber, and also relates to a core material of a vacuum insulation board based on the glass fiber and a preparation method thereof. Background technique [0002] With the rapid development of the aerospace industry, in order to overcome the harsher climate and space environment, and at the same time reduce the weight of aviation equipment itself, this puts forward higher requirements for the materials used in aviation equipment. [0003] Vacuum insulation panel (referred to as VIP) is a new type of thermal insulation material, which has low thermal conductivity, good thermal insulation effect, small space occupation ratio, energy saving, low carbon, environmental protection, safety and many other advantages. It is widely used in aerospace and other fields. The core material of the vacuum insulation panel is located inside the vacuum protection surface layer, which has an important impact on the thermal insul...

AI Technical Summary

Problems solved by technology

The core material of the vacuum insulation panel is located inside the vacuum protection surface layer, which has an important impact on the thermal insulation performance of the vacuum insulation panel. The core materials of the known vacuum insulation panels generally have disadvantages such as low fire protection level, poor thermal insulation ability, and thermal variability. Therefore, the development of high The core material of glass fiber vacuum insulation panels with fire protection rating and high thermal insulation performance is of great significance

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