IMPROVED METHOD FOR PREPARING ZEOLITE-METAL CHLORIDE HYBRID MOISTURE ADSORBENT AND MOISTURE ADSORBENT PREPARED BY SAME, AND METHOD FOR PREPARING MOISTURE ADSORBENT COMPOSITION FOR SURFACE COATING COMPRISING SAME

摘要

The present invention relates to an improved method for preparing a zeolite-metal chloride hybrid moisture adsorbent applicable to dehumidifiers and moisture adsorbent-type refrigerators, and more particularly, provides an improved method for preparing a zeolite-metal chloride hybrid moisture adsorbent, wherein the method comprises a step for dissolving a metal chloride in water to prepare a first solution; a step for mixing a porous zeolite including a ferroaluminophosphate-based zeolite into the first solution to prepare a second solution; a step for spraying the second solution to form droplets having a specific average diameter; and a step for drying the droplets to prepare the moisture adsorbent. In addition, the present invention provides a method for preparing a moisture adsorbent composition for surface coating, wherein the method comprises a step for dispersing a moisture adsorbent in a dispersant to prepare a dispersion solution; a step for adding an epoxy-based binder resin to the dispersion solution; and a step for adding a hardener thereto. A moisture adsorbent material prepared using such a method is characterized in having a maximum moisture adsorption of 0.2 to 0.9 g-water/g-sorbent in the operating pressure range of an adsorption-type refrigerator of P/P0 = 0.1 to 0.3.