Bonding Performance of Wood Treatment by Oxygen and Nitrogen Cold Plasma  

氧气和氮气冷离子体处理对木材胶合性能的影响(英文)

作　　者：王洪艳[1] 杜官本[2] 郑荣波[2] 王辉[2] 李琴[1] 

机构地区：[1]浙江省林业科学研究院,浙江省竹类研究重点实验室,浙江杭州310023 [2]西南林业大学,云南昆明650224

出　　处：《Agricultural Science & Technology》2014年第3期392-394,443,共4页农业科学与技术（英文版）

基　　金：Supported by National Natural Science Foundation of China(Project No.30930074);the Construction of Bamboo Research Innovation in Zhejiang Forestry Academy(No2012F20024)~~

摘　　要：In the test, woods were treated by N2, O2 cold plasma with the processing power 300 W, which last for 5 min; subsequently, the treated woods were bonded with MUF to valve the bonding performance, the contact angles of the treated/un- treated wood were tested. The chemical composition on the surface of wood with or without N2 cold plasma treatment was also studied by X-ray photoelectron spec- troscopy （XPS）. The results showed： the contact angles of the surface decreased; the surface free energy increased evidently that treated by N2 or O2 cold plasma; the average bonding performance of wood that treated by cold plasma （whether N2 or O2） increased obviously and more than 50% was proved compared with that un- treated by cold plasma. The XPS analysis showed the atomic ratio O/C has in- creased, and more groups were oxidized or more peroxides were formed on the surface of wood; N element was introduced to the wood surface after nitrogen cold plasma treatment and it was estimated to the group of -NH2.采用N2、O2两种等离子体气体分别处理木材,处理功率为300 W,处理时间为5min,将处理后的木材采用MUF胶粘合起来,测试了胶合强度,对冷等离子体处理前后的木材表面接触角、表面能能进行分析;并采用x-射线光电子能谱对处理前后木材表面的化学成分进行了分析。实验结果表明:经N2、O2冷等离子体处理后的木材表面的接触角明显减小,表面自由能明显增大;经冷等离子体处理后的胶合板的平均干状胶合强度和湿状强度均有明显(50%以上)增大;XPS的分析结果表明,经N2冷等离子体处理后,木材表面的氧/碳原子浓度比增加,产生了大量含氧官能团或过氧化物,同时引入了N元素,推测有-NH2生成。

关 键 词：Cold plasma Bonding performance Contact angle Surface energy 

分 类 号：S781[农业科学—木材科学与技术]