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无皂沉淀法制备聚乙烯醇缩丁醛 被引量:4

Synthesis of Polyvinyl Butyral via Soap-free Precipitation Method
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摘要 通过无皂沉淀法,以纳米二氧化硅替代表面活性剂,将丁醛通过高压均质机分散到聚乙烯醇水溶液中,制备了缩醛基含量75%以上,溶液黏度与市售树脂相当的聚乙烯醇缩丁醛(PVB)树脂(平均聚合度1700)。所得的PvB树脂粉末由粒径小于10μm的原始颗粒团聚而成,证明反应是在微小体积内进行;纳米二氧化硅黏附在颗粒的表面,起到了很好的物理隔离的作用,有效的抑制了PVB的团聚。无皂沉淀法减少了树脂洗涤用水的消耗,并且有利于树脂品质的提高。优化的反应条件为:聚乙烯醇和丁醛质量比为1;(0.60-0.65),反应起始温度20℃,梯度升温速度为5℃/30min,pH=1.3,分散剂纳米二氧化硅用量为体系的0.07%。 A novel soap-free precipitation method was adopted to prepare polyvinyl butyral (PVB). Nano-silica was selected as a dispersant in place of the surfactant. Butyraldehyde was dispersed into the aqueous solution of polyvinyl alcohol (PVA) by high pressure homogenization. The resulted PVB powder was aggregates of primary particle which was less than 10 microns, indicating that the reaction was carried out within a small volume. Nano-silica adhered to the surface of the particle, and effectively inhibited the agglomeration of PVB via the physical isolation. The acetal group content of the PVB was above 75% and the viscosity of its ethanol solution was similar to that of the commercial resins. The soap-free precipitation method evidently reduced the consumption of washing water and improved the quality ofthe resin. The optimized reaction conditions were. mass ratio of PVA to butyraldehyde 1 : (0. 640. 65), starting temperature 20 ℃, gradient heating rate 5 ℃/30 rain, pH value 1.3, dosage of nano-silica 0. 07 % of the total system.
作者 杨彪 王胜
出处 《中国塑料》 CAS CSCD 北大核心 2013年第8期65-70,共6页 China Plastics
基金 北京市自然科学基金资助项目(2132018) 北京市教委科技发展计划资助项目(KM200910011005) 北京市属高等学校人才强教计划资助项目(PHR201008248)
关键词 聚乙烯醇缩丁醛 纳米二氧化硅 无皂沉淀法 缩醛反应 polyvinyl butyral nano-siliea soap-free precipitation acetalization
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  • 1孙宏坚.高速成长中的塑料新材料PVB树脂的性能及应用[J].塑料制造,2007(11):90-98. 被引量:6
  • 2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. 被引量:5
  • 3王雷刚,郑玉斌,尚宏周.聚乙烯醇缩丁醛的合成新工艺[J].中国胶粘剂,2008,17(8):15-18. 被引量:24
  • 4Alexander Kraft, Matthias Rottmann. Properties, Per- formance and Current Status of the Laminated Electro- chromic Glass of Gesimat[J]. Solar Energy Materials and Solar Cells, 2009, 93. 2088-2092.
  • 5Zhou Xiaoliang, Sun Kening, Gao Jie, et al. Microstruc- ture and Electrochemical Characterization of Solid Oxide Fuel Cells Fabricated by Co-tape Casting[J]. Journal of Power Sources, 2009, 191:528-533.
  • 6Liu Hui, Feng Yi, Wang Zenghui, et al. A PVB-based Rheological Phase Approach to Nano-LiFePO4/C Compo- site Cathodes[J]. Powder Technology, 2008, 184. 313 317.
  • 7Li Zhiyi, Tang Huihua, Liu Xuewu, et al. Preparation and Characterization of Microporous Poly (vinyl butyral) Membranes by Supercritical CO2-induced Phase Separation [J]. Journal of Membrane Science,2008, 312: 115-124.
  • 8Shen Fei, Lu Xiaofeng, Bian Xiaokai, et al. Preparation and Hydrophilicity Study of Poly (vinyl bu-tyral)-based Ultrafiltration Membranes[J. Journal of Membrane Sci- ence, 2005, 265 : 74-84.
  • 9Ma Xiaole, Sun Qiang, Su Yanlei, et al. Antifouling Property Improvement of Poly(vinyl butyra!) Ultrafiltra- tion Membranes Through Acid Treatment[J]. Separation and Purification Technology, 2007, 54 : 220-226.
  • 10Zhang Pingyun, Wang Yanli, Xu Zhenliang, et al. Prep- aration of Poly (vinyl butyral) Hollow Fiber Ultrafiltra- tion Membrane Via Wet-spinning Method Using PVP as Additive-J. Desalination,2011, 278 : 186-193.

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