摘要
为了探明放电活性粒子改性木材表面形貌和润湿特性及其机理,采用针-板电极产生正电晕和负电晕改性白松木表面,然后通过扫描电子显微镜、接触角测量仪、拉曼光谱仪和红外光谱仪分别获取参数,最后分析了放电处理后的白松木表面形貌、润湿特性和化学组成变化情况。研究表明,增加放电电压和作用时间,白松木表面的粗糙度和润湿性随之增加,纤维素和木质素的拉曼光谱强度随之减少,亲水基团的红外光谱强度随之增加;并且,放电处理后的白松木表面微观形貌、润湿特性和化学基团之间呈现关联特性。该研究为电晕放电改性木材表面的应用提供了有价值的参考。
In order to explore the mechanism of both the surface morphology and wetting characteristics of wood that was modified by electric discharge active particles, a discharge plasma system with needle-plate electrode structure was used to modify the surface of white pine, which could be generated the positive and negative DC corona discharge. Then, parameters were examined by a scanning electron microscope(SEM), contact angle measuring instrument, Raman spectrometer, and infrared spectrometer, respectively. Furthermore, the surface modification characteristics of the white pine wood including the surface morphology, wetting characteristics, and chemical groups were analyzed. Results show that, as both discharge voltage and treatment time for processing the white pine wood surface increase, the roughness and wettability will increase, the Raman spectrum intensity of the cellulose and lignin will decrease, and the infrared spectrum intensity of the hydrophilic group will increase. Additionally, on the white pine wood surface treated with discharge, there are strong correlation characteristics among the surface microscopic morphology, wetting characteristics, and chemical groups. This work provides a valuable reference for the applications of corona discharge in wood surface modification.
作者
陈秉岩
刘昌裕
万良淏
陈可
戚家程
单鸣雷
蒋永锋
CHEN Bingyan;LIU Changyu;WAN Lianghao;CHEN Ke;QI Jiacheng;SHAN Minglei;JIANG Yongfeng(College of Science,Hohai University,Changzhou 213022,China;Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology,Changzhou 213022,China;School of Astronautics,Beihang University,Beijing 100191,China;Nanjing Suman Plasma Technology Co.,Ltd.,Nanjing 211162,China;School of Materials Science and Engineering,Zhejiang University,Hangzhou 310058,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2021年第3期786-795,共10页
High Voltage Engineering
基金
江苏省自然科学基金(BK20191162)
常州市科技计划项目(CJ20190046)
国家自然科学基金(11874140)。
关键词
直流电晕放电
表面改性
白松木
微观形貌
润湿特性
化学基团
DC corona discharge
surface modification
white pine wood
microscopic morphology
wetting characteristics
chemical groups
