Flame Retardant Material Based on Cellulose Scaffold Mineralized by Calcium Carbonate  

作　　者：Jinshuo Wang Lida Xing Fulong Zhang Chuanfu Liu 

机构地区：[1]State Key Laboratory of Pulp and Paper Engineering,School of Light Industry and Engineering,South China University of Technology,Guangzhou,510640,China

出　　处：《Journal of Renewable Materials》2024年第1期89-102,共14页可再生材料杂志（英文）

基　　金：the Guangdong Basic and Applied Basic Research Foundation(2023B1515040013);National Natural Science Foundation of China(22108088);State Key Laboratory of Pulp and Paper Engineering(202105)for the financial support of this work.

摘　　要：Wood-based functional materials have developed rapidly.But the flammability significantly limits its further application.To improve the flame retardancy,the balsa wood was delignified by NaClO2 solution to create a cellulose scaffold,and then alternately immersed in CaCl_(2) ethanol solution and NaHCO3 aqueous solution under vacuum.The high porosity and wettability resulting from delignification benefited the following mineralization process,changing the thermal properties of balsa wood significantly.The organic-inorganic wood composite showed abundant CaCO_(3) spherical particles under scanning electron microscopy.The peak of the heat release rate of delignified balsa-CaCO_(3) was reduced by 33%compared to the native balsa,according to the cone calorimetric characterization.The flame test demonstrated that the mineralized wood was flame retardant and selfextinguish.Additionally,the mineralized wood also displayed lower thermal conductivity.This study developed a feasible way to fabricate a lightweight,fire-retardant,self-extinguishing,and heat-insulating wood composite,providing a promising route for the valuable application of cellulosic biomass.

关 键 词：Cellulose scaffold DELIGNIFICATION CaCO_(3) MINERALIZATION fire retardancy 

分 类 号：TQ314.248[化学工程—高聚物工业]