Effect of inorganic particles on slot die coating of poly(vinyl alcohol) solutions
Effect of inorganic particles on slot die coating of poly(vinyl alcohol) solutions
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DOI：
10.1007/s11771-007-0288-5
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发表时间：
2007-02
影响因子：
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通讯作者：
Ta‐Jo Liu;Wen-bing Chu;Jia-Wei Yang;Yu-chin Wang;C. Tiu;J. Guo
中科院分区：
文献类型：
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作者：
Ta‐Jo Liu;Wen-bing Chu;Jia-Wei Yang;Yu-chin Wang;C. Tiu;J. Guo
研究了添加tio2和sio2颗粒的聚乙烯醇（PVA）溶液对槽模涂层的影响。对含颗粒PVA溶液的粘度、表面张力等物理性能进行了测量和分析。在实验室涂布机上进行了涂布实验，并应用流动可视化技术观察了涂布头区域的流动行为。分析了不同粒径、粒径、浓度和表面特性对聚乙烯醇溶液操作窗口的影响。结果表明，在PVA溶液中加入一定量的颗粒可以有效地扩大PVA溶液的操作窗口。PVA的官能团对粒子表面的吸引力被认为是扩大操作窗口的主要因素。
The slot die coating of poly (vinyl alcohol, PVA) solutions with particles such as TiO2and SiO2added was examined. The physical properties such as viscosities and surface tensions of PVA solutions with particles were measured and analyzed. The coating experiment was carried out in a lab coater and a flow visualization technique was applied to observe the flow behavior in the coating bead region. The effect of different particles, particle sizes, concentrations and surface characteristics were analyzed on the operating window of PVA solutions. The results show that adding a certain amount of particles to PVA solutions can effectively expand the operating window of PVA solutions. The attraction of function groups of PVA to the particle surfaces is considered as the major factor to expand the operating window.