浸渍时间和压缩率对PF树脂浸渍马尾松LVL性能的影响  

Effect of Impregnation Time and Compressibility on Properties of PF Resin Impregnated Masson Pine LVL

作　　者：唐天让 龚国辉[1] 潘彪[1] 尹文秀[1] 王丰[1] 翟胜丞[1] 

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037

出　　处：《林业机械与木工设备》2015年第5期17-19,共3页Forestry Machinery & Woodworking Equipment

基　　金：2012年地方高校国家级大学生创新创业训练计划项目

摘　　要：采用低分子量酚醛树脂浸渍处理小径级马尾松单板,探讨常温常压下不同浸渍时间及不同压缩率对马尾松单板层积材物理力学性能的影响。结果表明:常温常压下,马尾松单板随着浸渍时间(8 h、14 h、26 h)的延长,其干湿增重率都呈增长趋势;压缩率(10%、20%、25%)的增加均能提高LVL的密度、尺寸稳定性、MOE和MOR。参考GB/T 20241-2006《单板层积材》,3种不同浸渍时间和不同压缩率下生产的LVL,MOR都达到了180E优级,MOE最低达到120E级,最高可达180E级。Low molecular weight PF resin is use for impregnation treatment small-diameter Masson Pine veneer to explore the effect of different impregnation time and different compressibility on the physical and chemical properties of Masson Pine LVL under normal pressure and temperature. The result shows dry and wet weight gain （WPG）increase with impregnation time （8 h,14 h,26 h）;the increase in impregnation time and compressibility （10%,20%,25%）can increase the density,di-mension stability,MOR and MOE of Masson Pine LVL. According to Chinese national standard GB/T 20241-2006“Lami-nated Veneer Lumber”,for LVL produced based on three different impregnation times and compressibilities,MOR reaches the superior level180E and MOE reaches 120E at least and 180E level at most.

关 键 词：酚醛树脂 马尾松 增重率 压缩率 

分 类 号：TS612[轻工技术与工程]