毛白杨制备LNG船用特种重组材料的适应性初步研究  

Preliminary Study on the Adaptability of Special Wood Scrimber Materials for LNG Ships Prepared from Populus tomentosa

作　　者：张方达[1] 孙忠海 杨素英 孙建斌 于文吉[1] ZHANG Fangda;SUN Zhonghai;YANG Suying;SUN Jianbin;YU Wenji(Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China;Kang Liyuan Science&Technology(Tianjin)Co.,Ltd.Tianjin 300400,China;Bureau of Agriculture and Rural Affairs of Shan County,Heze 274300,Shandong,China;Shanghai Waigaoqiao Shipbuilding&Offshore Co.,Ltd,Shanghai 200137,China)

机构地区：[1]中国林业科学研究院木材工业研究所,北京100091 [2]康利源科技(天津)股份有限公司,天津300400 [3]山东省单县农业农村局,山东菏泽274300 [4]上海外高桥造船海洋工程有限公司,上海200137

出　　处：《木材科学与技术》2024年第6期62-68,共7页Chinese Journal of Wood Science and Technology

基　　金：“十四五”国家重点研发计划项目课题“高性能重组木连续化制造关键技术与装备”(2021YFD2200601)。

摘　　要：液化天然气(liquefied natural gas,LNG)船用特种重组材料常用于超低温储气罐与船体之间,作为承重和隔热材料,目前该材料主要从国外进口。采用厚度为1.3 mm和1.8 mm的毛白杨单板为原料制备LNG船用特种重组木,并对比其微观构造、吸水率和力学强度。结果表明,1.3 mm厚毛白杨单板制备重组木的综合性能较好,吸水率为6.6%,垂直加载抗弯性能分别为212.4 MPa和17.5 GPa,抗压强度为255.6 MPa,剪切强度为38.2 MPa,但其吸水率和剪切强度均与相关进口产品有较大差距;另外,力学强度测试过程中发现2种厚度单板制备的重组木局部被压溃,并产生裂纹。The special scrimber for liquefied natural gas(LNG)ships is used as a load-bearing and insulation material between the cryogenic gas storage tankers and the ship hull.Currently,this material is mainly imported from abroad.In this study,Populus tomentosa veneers with thicknesses of 1.3 mm and 1.8 mm were used to prepare special wood scrimber for LNG ships.The microstructure,water absorption and mechanical strength were evaluated and compared.The results indicated that the performance of the special wood scrimber prepared from 1.3 mm veneers was superior,with a water absorption rate of 6.6%,vertical loading and bending resistance of 212.4 MPa and 17.5 GPa respectively,a compressive strength of 255.6 MPa,and a shear strength of 38.2 MPa.However,the shear strength and water absorption of wood scrimber-1.3 are still lower than those of imported products.Furthermore,during the mechanical strength test,it was found that the wood scrimbers prepared from two types of veneers were both crushed and exhibited some cracks.

关 键 词：毛白杨单板 LNG船 特种重组木 吸水率 力学强度 孔隙 裂纹 

分 类 号：TS653[轻工技术与工程] S792.11[农业科学—林木遗传育种]