加热方式对聚乙烯醇缩丁醛流延膜干燥速率的影响  

Effects of Different Drying Methods on Polyvinyl Butyral Casting Films

作　　者：方晓霞 刘鹏[1] 温变英[1] 

机构地区：[1]北京工商大学材料与机械工程学院,北京100048

出　　处：《高分子材料科学与工程》2014年第7期110-114,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金面上项目(21274007);北京市自然科学基金项目暨北京市教育委员会科技计划重点项目(KZ201110011014);北京市教委科技创新平台项目(PXM2012-014213-000025)

摘　　要：首先以热风、热板为干燥方式,通过考察初始溶液浓度、干燥温度、初始料层厚度以及导电粒子含量等因素对干燥速率的影响,筛选出聚乙烯醇缩丁醛(PVB)溶液流延膜较为适合的干燥条件;在此基础上,进一步比较了热风、热板、红外以及真空干燥4种加热方式对PVB流延膜干燥速率的影响。结果表明,在合适范围内,溶液浓度越小、干燥温度越高、初始层料厚度越薄,越有利于干燥速率的提高;填料粒子的加入导致干燥速率的下降。在所考察的4种加热方式中,热板干燥的PVB流延膜的干燥速率最大,其次是真空干燥、红外干燥,热风干燥的干燥速率最小。The influence of drying temperature, the content of conductive fillers, polyvinyl butyral（PVB） solution concentration and its initial layer thickness on the drying rate of PVB casting film was investigated based on the heating mode of hot air drying and hot plate drying; and the appropriating drying condition was selected. Based on this foundation, the effects of heating methods, including hot air drying, hot plate drying, infrared drying and vacuum drying, on the drying rate of PVB casting films were compared. It is concluded that higher drying temperature, thinner initial layer as well as lower concentrations are beneficial for improvement of the drying rate, while the adding of filler particles does the opposite. Besides, the comparing result shows that the hot plate drying is the best way for drying of the PVB casting film among the and the hot air drying is the last one. four heating methods, vacuum drying is in the next place,

关 键 词：聚乙烯醇缩丁醛 溶液流延 加热方式 干燥速率 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业]