Preparation method of heat storage core based on Sn-9Zn alloy and heat storage core based on Sn-9Zn alloy

Abstract

The invention discloses a preparation method of a heat storage core based on Sn-9Zn alloy and the heat storage core based on the Sn-9Zn alloy, and the preparation method comprises the following steps:melting Sn metal powder and Zn metal powder to obtain molten metal; placing the molten metal in a high-temperature-resistant model to be cooled; and obtaining the Sn-9Zn alloy-based heat storage core. According to the Sn-9Zn alloy-based heat storage core prepared by the preparation method of the Sn-9Zn alloy-based heat storage core provided by the invention, the preheating time of heating of theheat storage core can be shortened, and the heat source stability of heating of the heat storage core can be improved; and meanwhile, the Sn-9Zn alloy is high in density, low in thermal expansion coefficient and high in latent heat of phase change per unit volume, and the requirement for miniaturization of a heating device can be met.

Description

Technical field [0001] The invention relates to the field of tobacco heating, in particular to a method for preparing a heat storage core based on Sn-9Zn alloy and a heat storage core based on Sn-9Zn alloy. Background technique [0002] At present, because the heat source of heat-not-burn tobacco can heat the cartridge enough to emit a tobacco-flavored aerosol without igniting the cartridge, the heat source of heat-not-burn tobacco is widely loved by major tobacco businesses. However, the current common heat sources for heating non-combustion tobacco are medium temperature inorganic salts, metallic phase change materials, etc. Among them, the inorganic salt phase change materials have too high specific heat capacity and low thermal conductivity, resulting in too long preheating time of the heat source and unstable heating temperature. Metal phase change materials, such as Sn-37Pb alloy materials contain heavy metals, which are not conducive to the healthy use of tobacco products....

AI Technical Summary

Problems solved by technology

[0002] At present, due to the excellent performance of the heat-not-burn tobacco heat source that can heat the pod enough to emit tobacco-flavored aerosol without igniting the pod, the heat-not-burn tobacco heat source is widely favored by major tobacco merchants However, the common heat-not-burn tobacco heat sources are medium-temperature inorganic salts, metal phase change materials, etc. Among them, the specific heat capacity of inorganic salt phase change materials is too high, and the thermal conductivity is low, which leads to long preheating time of the heat source and unstable heating temperature. And metal phase change materials, such as; Sn-37Pb alloy material contains heavy metals, which is not conducive to the healthy use of tobacco products

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