PHENOLIC FOAM AS CORE MATERIAL FOR VACUUM INSULATION PANEL AND METHOD FOR FABRICATING VACUUM INSULATION PANEL USING THE SAME

摘要

The present invention relates to a vacuum insulator core material made of a phenol resin, a vacuum insulator using the same, and a method for manufacturing the same. More specifically, the core material is formed of a phenol resin cured foam having a closed cell content of 20% or less, By adjusting the average particle diameter of the bubbles to 50 ~ 500㎛, and by forming a fine hole of 0.5 ~ 30㎛ on the surface of each bubble, the porosity of the phenolic resin light foam foam is 50% or more, having excellent thermal insulation performance, structural The present invention relates to an invention capable of securing strength and reducing manufacturing costs.