DBD冷等离子体处理云南松表面时效性研究  

Aging behavior of Yunnan pine modified by air dielectric barrier discharge cold plasma treatment

作　　者：王洪艳[1] 杜官本[2] 韩永国[2] 

机构地区：[1]南京林业大学木材工业学院,江苏南京210037 [2]西南林业大学材料工程学院,云南昆明650224

出　　处：《粘接》2013年第3期56-59,共4页Adhesion

基　　金：国家科技支撑计划(2012BAD24B03)

摘　　要：采用空气介质阻挡放电（DBD）冷等离子体改性云南松木材表面，利用水和二碘甲烷测试不同放置时间木材表面接触角，根据Young—Good—Girifalco-FowkesSY程公式计算表面自由能及其色散力和极性力。结果表明，经DBD冷等离子体处理后松木表面接触角明显降低，自由能显著提高，1h后测得表面自由能提高55％；随放置时间的延长表面自由能都逐渐降低，9～24h内活性降低比较迅速，放置8d后接近于改性前水平。The surface of Yunnan pine wood was treated by air dielectric barrier discharge （DBD） cold plasma at atmospheric pressure,and the contact angles of the surface with water and diiodomethane for different standing time after treating were tested.The surface free energy and other parameters were calculated according to Young-Good-GirifalcoFowkes expression.The results showed that after DBD cold plasma treatment the contact angles of treated wood surface decreased prominently and the surface free energy increased,the surface free energy increased by 55% for one hour after treating,however,then it decreased gradually with the time going on,it declined prominently during the period from 9 hours to one day and almost reached the level before treatment after 8 days

关 键 词：介质阻挡放电(DBD) 冷等离子体 接触角 自由能 表面时效性 

分 类 号：TG494[金属学及工艺—焊接]