id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
brj-22005	Wang, Xuelin; Zhu, Xiaofeng; Wang, Bin; Zhang, Minghui; An, Zhen; Han, Wang	Periodic Hygrothermal Properties of Salix Liquefaction Products / Isocyanate Rigid Foam Materials	2023	15	.pdf	application/pdf	5464	286	57	This research provides a theoretical basis for improving the aging resistance of polyurethane foam materials in the future, and it also provides a new type of biomass-based polyurethane insulation material for heating cities in northern China. This is because the surface of polyurethane foam material was aged, so the impact strength of the material decreased.	cache/brj-22005.pdf	txt/brj-22005.txt