Study on Physical and Mechanical Properties of Poplar Modified by Phenol-formaldehyde Resin  

作　　者：CHAI Yubo1 LIU Huanrong1 LIU Junliang1 LI Longzhe2 TANG Deguo3 1.Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, P.R.China 2. Construction Bureau of Yanbian Korean Autonomous Prefecture, Yanji 133000, P.R.China 3. Forestry Bureau of Wangqing County, Wangqing 133200, P.R.China 

出　　处：《Chinese Forestry Science and Technology》2008年第1期82-87,共6页中国林业科技（英文版）

摘　　要：Impregnation method can effectively improve physical and mechanical properties of wood. In this study, plantation poplar lumbers are impregnated by a low molecular weight phenol-formaldehyde resin solution with concentration of 30% under vacuum-pressure process, and then dried and machined according to the related standards. The results show that the physical and mechanical properties of poplar can be improved by the treatment, except for toughness. The average density of poplar increases from 0.397 to 0.710 g/cm3, the modulus of elasticity in static bending, the bending strength and the compressive strength parallel to grain of treated specimens increase by 56.71%, 112.97% and 87.69%, respectively, compared to the untreated. And the hardness values on radial and tangential sections, and nail holding power as well as abrasion resistance of treated specimens improve by 283.87%, 82.78%, 71.43% and 22.06%, respectively; while toughness decreases by 48.80%.Impregnation method can effectively improve physical and mechanical properties of wood. In this study, plantation poplar lumbers are impregnated by a low molecular weight phenol-formaldehyde resin solution with concentration of 30% under vacuum-pressure process, and then dried and machined according to the related standards. The results show that the physical and mechanical properties of poplar can be improved by the treatment, except for toughness. The average density of poplar increases from 0.397 to 0.71...

关 键 词：phenol-formaldehyde MODIFICATION IMPREGNATION I-72 poplar (Populus xeuramericana) density strength plantion physical mechanical property 

分 类 号：S781[农业科学—木材科学与技术]