Preprint Article Version 1 This version is not peer-reviewed

A Study on the Gas Emission of Constituent 2 Materials Making Metal Vacuum Panel

Version 1 : Received: 18 January 2019 / Approved: 23 January 2019 / Online: 23 January 2019 (10:27:49 CET)

How to cite: Sang Hun, H. A Study on the Gas Emission of Constituent 2 Materials Making Metal Vacuum Panel. Preprints 2019, 2019010240 (doi: 10.20944/preprints201901.0240.v1). Sang Hun, H. A Study on the Gas Emission of Constituent 2 Materials Making Metal Vacuum Panel. Preprints 2019, 2019010240 (doi: 10.20944/preprints201901.0240.v1).

Abstract

This study examines whether gas is emitted from the materials used in the fabrication of metal vacuum panels or not and if emitted, their degree as time goes by. As experimental materials, metal sheets, foamed concrete as a core material, and polymer materials as a sealing material between metal sheets were selected. Experiments on the type and the degree of bending of metal materials showed that aluminum’s vacuum reaching time of 0.001 torr was at least 40 sec to 90 sec in its flat plate, but its vacuum reaching time increased from 3 times to 4.5 times in case of 90 ° and 135 ° bending state. For this reason, it is judged that stainless steel or steel material is suitable because aluminum is inadequate in terms of processability at the time of fabricating the metal vacuum panel. Also, vacuum arrival times and weight changes with increasing foam content of inorganic foamed concrete increased from 22,000 sec to 42,000 sec with increasing foaming rate and also, the weight change increased from 1.7% to 8%. Also, the experimental results on the type of honeycomb materials, the PE (polyethylene) with a vacuum reaching time of 30,000 sec and with a weight change of 0.5% and the PTFE (Poly-tetrafluoro ethylene) with a vacuum reaching time of 29,000 sec and with a weight change of 2.2% showed the optimum value.

Subject Areas

metal vacuum panel; vacuum Insulation Panel; energy; gas emission; foam concrete; honeycomb materials

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