| 摘要: |
| 采用空气射流等离子放电技术对木粉/聚乙烯复合材料（PE WPCs）进行表面处理，以改善其胶接性能，通过接触角和胶接强度测试、傅里叶红外光谱（FTIR）和X射线光电子能谱（XPS）方法等分析研究了木粉含量对PE WPCs等离子体处理时效性的影响.结果表明：经射流等离子体处理后，PE WPCs表面产生了含氧极性基团，表面接触角减小，胶接强度明显提高；随着放置时间的延长，处理后PE WPCs表面极性基团数量减少，表面接触角增大，胶接强度略有下降，表现出一定的处理时效性；PE WPCs木粉含量越高，处理时效性越小；尽管存在时效性，但处理后PE WPCs的胶接强度仍远高于未处理PE WPCs. |
| 关键词: 木粉/聚乙烯复合材料 射流等离子体处理 时效性 表面性质 木粉含量 |
| DOI：10.3969/j.issn.1007 9629.2020.03.027 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（31670567）；中央高校基本科研业务费专项资金资助项目（2572017EB06） |
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| Effect of Wood Powder Content on Time Efficiency of Jet Plasma Surface Treatment for Wood Powder/Polyethylene Composites |
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YAN Shuang, DI Mingwei
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Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
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| Abstract: |
| The surfaces of wood powder polyethylene composites(PE WPCs) with different wood powder content were treated by jet plasma discharge under air atmosphere to improve its adhesion properties. To study the effect of wood powder content on time efficiency of plasma surface treatment for PE WPCs, the surface properties change over storage time were studied by assessing the contact angle and bonding strength, as well as implementing Fourier transform infrared(FTIR) spectroscopy, and X ray photoelectron spectroscopy(XPS). The results show that the surface contact angle for the composites decreases, and the oxygen containing groups are introduced on the surface of the composites after plasma treatment, which results in the improvement of bonding strength. With the increase of storage time for plasma treated sample, the amount of oxygen containing groups reduces, the surface contact angle for the composites increases, and the bonding strength for the composites decreases slightly, which shows a certain extent of loss of efficiency of the plasma surface treatment. The content of wood powder in PE WPCs has a certain influence on the time efficiency of plasma discharge on the surface of PE WPCs, and the higher content of wood powder is contained in the composites, the less loss of time efficiency of surface plasma treatment can be achieved. Despite the time efficiency for the plasma surface treatment, the adhesion strength of the plasma discharge treated samples is still far better than that of the untreated samples. |
| Key words: wood powder/polyethylene composites（PE WPCs） jet plasma surface treatment time efficiency of plasma treatment surface property wood powder content |
