Hygroscopicity and Ultraviolet (UV) Deterioration Characteristics of Finished Woods

Abstract

This study investigated the hygroscopicity and UV deterioration characteristics of 3 domestic and 4 imported woods using natural oil, stain, and varnish paints. In terms of hygroscopicity, it was found that the hygroscopicity of the painted wood was lower than that of the unpainted wood, and that as the number of coatings increased, the hygroscopicity decreased. In terms of anti-absorption, oil-based chemical paints showed higher resistance than water-based paints, and natural oils showed results comparable to oil-based paints. As for the UV deterioration, the amount of color change of the painted wood was lower than that of the unpainted wood, and there was no significant difference according to the number of times of painting. The amount of color change was found to be low in oil-based paints and hardwoods. Through this study, we confirmed effective moisture blocking and small color changes during painting using paints, and it is believed that wood can be protected from internal and external defects through selective and efficient painting based on data for excellent painting performance.

Investigation of Sound Absorption Ability of Hinoki Cypress (Chamaecyparis obtusa) Cubes

“…Wood is the most used eco-friendly material on the planet, with applications ranging from landscaping, building, and furniture (Dirna et al, 2020;Fujimoto et al, 2021;Hwang and Oh, 2022;Kim and Kim, 2021;Mokhirev et al, 2021;Park and Jo, 2020;Park et al, 2022;Schulz et al, 2021;Yang et al, 2020;Yun et al, 2021). Wood also improves indoor air quality by absorbing or releasing moisture from the air to maintain proper humidity and lowers stress by stabilizing humans emotionally (Lee et al, 2016).…”