导热油加热的连续热压干燥机干燥速生杨单板的应用研究  

Application Research of Heat-Conducting Oil in Continuous PlatenDrying of Fast Growing Popular Veneer

作　　者：顾炼百[1] 李大纲[1] 陆肖宝[1] 承国义[1] 

机构地区：[1]南京林业大学,南京210037

出　　处：《林产工业》2000年第1期17-19,23,共4页China Forest Products Industry

基　　金："九五"国家科技攻关专题!96-011-02-06

摘　　要：导热油作载热体，在速生杨木单板连续式热压干燥中应用后，效果良好。美洲黑杨生材单板（名义厚度１．７ｍｍ）可在２ｍｉｎ内干至８％以下的含水率。干单板基本平整、光滑，终含水率均匀，无撕裂。单板厚度干缩率平均５．３％，横纹干缩率４．９％。胶合强度平均０．８１２ＭＰａ，略高于网带对流干燥单板胶合强度０.７７９ＭＰａ。研究结果表明，此法干燥速生杨木单板是可行的。Heat-conducting oil was used as a heat-carrier in continuous platen drying of fast-growing popular veneer and achieved good results. Cottonwood green veneer(nominal thickness of 1. 7nun) was dried tomoisture content(MC)of below 8 % in 2 minutes. The dried veneer was basically flat and smooth with evenfinal MC and no split. The thickness shrinkage of the veneer was average 5. 3 %, and the cross-grain shrinkage 4. 9 %. The bonding strength of the veneer was average 0. 812MPa slightly higher than 0. 779MPa ofveneer dried by convection drier with net conveyer. The research results show that drying veneer of fastgrowing poplar with the above method is feasible.

关 键 词：导热油 干缩 撕裂 连续热压干燥机 速生杨单板 

分 类 号：TS642[轻工技术与工程] TS652