原位纳米SiO2改性阳离子水性聚氨酯乳液的合成及其性能研究

doi:10.16039/j.cnki.cn22-1249.2019.09.015

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摘要

采用聚丙二醇、1,4-丁二醇、阳离子扩链剂N-甲基二乙醇胺等原料，合成聚氨酯预聚物，在预聚物中加入正硅酸乙酯，通过正硅酸乙酯水解将SiO₂粒子引入，合成不同含量（正硅酸乙酯与预聚物质量比）的5种自乳化阳离子水性聚氨酯乳液。通过对乳液官能团结构进行表征、乳液粒径尺寸分析、耐热稳定性能分析。在红外表征中Si-O键的出现，可以表明乳液中成功引入SiO₂粒子。通过粒径分析仪和热重分析仪可以得出结论：随着SiO₂含量的增加，粒径反而减小，耐热性能却有所提高，表面张力也存在增大的趋势。原位合成聚氨酯乳液具有分散性好、储存稳定、热稳定性高等优点。

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	田晶
	郭慧君
	杨威龙
	杨春才

关键词: 阳离子扩链剂表面张力原位合成

Abstract:

The polyurethane prepolymer was synthesized by using raw materials, including polypropylene glycol, 1,4-butanediol and cationic chain extender Nmethyldiethanolamine. Then, orthosilicate was added to the prepolymer and SiO₂ particles were prepared successfully by hydrolysis of ethyl orthosilicate. Five kinds of cationic aqueous polyurethane emulsions with different contents (mass ratio of orthosilicate/prepolymer) were obtained. The characterizations of emulsion functional group structure, emulsion particle size analysis and heat stability analysis were carried out. The appearance of Si-O bonds in infrared characterization can indicate the successful introduction of SiO₂ particles in the emulsion. Through the particle size analyzer and thermogravimetric analyzer, it can be concluded that with the increase of SiO₂ content, the particle size decreases, the heat resistance is improved, and the surface tension also increases. The preparation of nano-SiO₂ cationic waterborne polyurethane emulsionthe possess good dispersion, stable storage and high thermal stability.

Key words: cation chain extender surface tension situ

出版日期: 2019-09-25 发布日期: 2019-09-25 整期出版日期: 2019-09-25

O 633.4

引用本文:

田晶, 郭慧君, 杨威龙, 杨春才. 原位纳米SiO₂改性阳离子水性聚氨酯乳液的合成及其性能研究[J]. 吉林化工学院学报, 2019, 36(9): 65-68.
TIAN Jing, GUO Huijun, YANG Weilong, YANG Chuncai. Synthesis and Study of in Situ Nano-SiO₂ Cationic Waterborne Polyurethane Emulsion. Journal of Jilin Institute of Chemical Technology, 2019, 36(9): 65-68.

链接本文:

https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2019.09.015 或 https://xuebao.jlict.edu.cn/CN/Y2019/V36/I9/65

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