Abstract
The aim of the study is to investigate the curing behaviours of bio-based PF resins treated Japanese Cedar (Cryptomeria japonica). Compared to conventional wood preservatives such as metal-based ACQ, bio-based PF resin was more environmentally-friendly and can store more plant-based carbon inside treated wood. However, all these preservatives have the risk of being leached out. This study conducted thermal analysis of phenolic resin using DSC to analyse the activation energy and curing conditions, allowing the resin to be maximally retained in the wood, and explored how to reduce the leaching rate of bio-based phenolic resin. Leaching experiments were performed to understand whether the leachate contained preservatives, and FTIR analysis was conducted to determine if preservatives were leached out. The results show that the current resin showed a large amount of leaching at the beginning, and although the subsequent leaching volume decreased, there was still a continuous washout. It means that the antiseptic ability of the sample after leaching may be reduced, and the washed out material will affect the environment.