聚乙烯醇缩丁醛合成工艺研究

doi:10.16039/j.cnki.cn22-1249.2018.05.002

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摘要研究了聚乙烯醇（PVA）和正丁醛在盐酸催化条件下，沉淀法合成聚乙烯醇缩丁醛（PVB）。考察了m(正丁醛):m(PVA)、催化剂用量、乳化剂用量、低温反应时间（tL）、高温反应温度（TH）以及高温反应时间（tH）对缩醛反应的影响，结果表明，最佳合成工艺条件为：m(正丁醛):m(PVA)为2.2:1，催化剂的用量为13%（以正丁醛和PVA总质量计），乳化剂用量为1.9%（以正丁醛和PVA总质量计），在3～7℃反应3h，45℃反应1h的条件下，制备得到的聚乙烯醇缩丁醛的缩醛度可达到88.47%。

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	王海东
	肖顶
	白津
	张俊德
	肖尧
	袁灿
	王野
	丁斌

关键词: 聚乙烯醇缩丁醛聚乙烯醇正丁醛缩醛反应

Abstract: Polyvinyl butyral (PVB) was synthesized by precipitation method with polyvinyl alcohol (PVA) and n-butyraldehyde, and hydrochloric acid as catalysts. The effects of m(n-butylaldehyde):m(PVA), catalyst dosage, dosage of emulsifier, reaction time (tL) at low temperature, high temperature reaction temperature (TH) and reaction time (tH) at high temperature on the aldolization was discussed, the results showed that the optimum process conditions were as follows: m(n-butylaldehyde):m(PVA) was 2.2:1, catalyst dosage was 13% (total weight of n-butylaldehyde and PVA）, dosage of emulsifier was 1.9 %（total weight of n-butylaldehyde and PVA）, reaction time was 3 h at 3-7 ℃, reaction time was 1 h at 45 ℃, the acetal degree of polyvinyl butyral is 88.47 %.

Key words: polyvinyl butyra polyvinyl alcohol n-butylaldehyde aldolization

出版日期: 2018-05-25 发布日期: 2018-05-25 整期出版日期: 2018-05-25

TQ 430.4

引用本文:

王海东, 肖顶, 白津, 张俊德, 肖尧, 袁灿, 王野, 丁斌. 聚乙烯醇缩丁醛合成工艺研究[J]. 吉林化工学院学报, 2018, 35(5): 5-8.
WANG Hai-dong, XIAO Ding, BAI Jin, ZHANG Jun-de, XIAO Yao, YUAN Can, WANG Ye, DING Bin. Study on the Process for Synthesis of Polyvinyl Butyral. Journal of Jilin Institute of Chemical Technology, 2018, 35(5): 5-8.

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https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2018.05.002 或 https://xuebao.jlict.edu.cn/CN/Y2018/V35/I5/5

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