| 干燥预处理对EVA可再分散乳胶粉性能的影响 |
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| 引用本文： | 裴勇兵,张心亚,谢德龙,阎虹,陈焕钦.干燥预处理对EVA可再分散乳胶粉性能的影响[J].江苏大学学报(自然科学版),2010,31(1). |
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| 作者姓名： | 裴勇兵 张心亚 谢德龙 阎虹 陈焕钦 |
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| 作者单位： | 华南理工大学,化学与化工学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(50803017) |
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| 摘 要： | 通过试验用NaOH稀溶液、硅溶胶和聚乙烯醇(PVA)对乙烯-醋酸乙烯酯(EVA)乳液进行干燥预处理,采用喷雾干燥法制备EVA可再分散乳胶粉,并讨论pH值、硅溶胶、PVA对EVA可再分散乳胶粉含水率、残渣率、再分散性及再分散液胶膜等性能的影响.试验结果表明,将EVA乳液pH值调节至9,用乳液质量25%的硅溶胶和5%的PVA对乳液进行干燥预处理,在雾化机旋转盘转速为21000r/min,进出口温度分别为170℃和90℃,进料速度为80g/min条件下进行喷雾干燥,制得的EVA可再分散乳胶粉含水率(ω=2.35%)和残渣率(ω=3.70%)低、再分散性及再分散液成膜良好.
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| 关 键 词： | EVA可再分散乳胶粉 预处理 喷雾干燥 含水率 残渣率 |
Effect of predisposal for drying on performance of EVA redispersible emulsion powder |
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| Pei Yongbing,Zhang Xinya,Xie Delong,Yan Hong,Chen Huanqin.Effect of predisposal for drying on performance of EVA redispersible emulsion powder[J].Journal of Jiangsu University:Natural Science Edition,2010,31(1). |
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| Authors: | Pei Yongbing Zhang Xinya Xie Delong Yan Hong Chen Huanqin |
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| Institution: | School of Chemistry and Chemical Engineering/a>;South China University of Technology/a>;Guangzhou/a>;Guangdong 510640/a>;China |
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| Abstract: | Ethene-vinyl acetate(EVA)redispersible emulsion powder was prepared via spray drying after the emulsion was predisposed with dilute sodium hydroxide solution,silica sol and polyvinyl alcohol(PVA) through experiment.The effects of pH value,silica sol and PVA on the powder's water and filter residue content,redispersibility and film properties of reconstituted emulsion were discussed.The experimental results show that pH value of EVA emulsion is adjusted to 9 and silica sol(25% of EVA emulsion) and PVA(5% of ... |
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| Keywords: | EVA redispersible emulsion powder predisposal spray drying water content filter residue content |
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