| 高粘度PVB树脂的合成新工艺 |
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| 引用本文： | 吕红,周密,钱欣,王海涛,林卫平.高粘度PVB树脂的合成新工艺[J].科技通报,2012,28(3):105-109,114. |
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| 作者姓名： | 吕红 周密 钱欣 王海涛 林卫平 |
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| 作者单位： | 1. 浙江工业大学化学工程与材料学院,杭州,310032
2. 浙江德斯泰塑胶有限公司,浙江台州,317200 |
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| 摘 要： | 为了提高高粘度PVB树脂的缩醛率,本文探讨了聚乙烯醇的浓度,聚乙烯醇与丁醛、盐酸、乳化剂的配比,水/异丙醇混合溶液的比例等对缩醛反应的影响.在优选的工艺条件下,适当比例的水/异丙醇混合溶液不仅能达到溶解法中缩醛率高,缩合分布均匀的优点,而且能保持沉淀法中产品同收、清洗容易的优点,PVB颗粒始终保持大小合适、分布均匀,最佳比值为V(水)∶V(异丙醇)=175∶25,此时缩醛率为81.64％.
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| 关 键 词： | 高粘度PVB树脂 缩合 缩醛率 异丙醇 |
New Synthesis Technology for High Viscosity PVB Resin |
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| LV Hong
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ZHOU Mi
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QIAN Xin
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WANG Haitao
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LIN Weiping.New Synthesis Technology for High Viscosity PVB Resin[J].Bulletin of Science and Technology,2012,28(3):105-109,114. |
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| Authors: | LV Hong ZHOU Mi QIAN Xin WANG Haitao LIN Weiping |
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| Institution: | 1.College of Chemical Engineer and Materials Science,Zhengjiang University of Technology,Hangzhou 310032,China; 2.Zhejiang Decent Plastic Co.,Lltd.,Taizhou 317200,China) |
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| Abstract: | In order to improve acetalization rate of high viscosity PVB resin,the effects of reaction parameters such as the polyvinyl alcohol(PVA) concentration,material proportion(PVA,butyl aldehyde,hydrochloric acid and sodium dodecyl sulfate),the ratio of water-isopropanol mixed solution on the content of acetalization rate in product were examined.Under the optimum proportion of water-isopropanol mixed solution,it can not only achieve high acetalization rate and uniform distributed aldehyde acetal group that is the advantages of homogeneous reaction,but also can keep easily recycling and cleaning that is the advantages of precipitation.Products always maintain the particles in right size and uniform.The obtained optimum conditions was V(water)∶V(isopropanol)=175∶25,the acetalization rate in the PVB product was 81.64 %. |
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| Keywords: | high viscosity PVB resin condensation acetalization isopropanol |
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