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兴发pt登录学报,2019,36(9):65-68https://doi.org/10.16039/j.cnki.cn22-1249.2019.09.015
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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
田晶,郭慧君,杨威龙,杨春才
兴发pt登录 材料科学与工程研究中心
Synthesis and Study of in Situ Nano-SiO2Cationic Waterborne Polyurethane Emulsion
TIAN Jing, GUO Huijun, YANG Weilong, YANG Chuncai
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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 SiO2particles 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 SiO2particles in the emulsion. Through the particle size analyzer and thermogravimetric analyzer, it can be concluded that with the increase of SiO2content, the particle size decreases, the heat resistance is improved, and the surface tension also increases. The preparation of nano-SiO2cationic waterborne polyurethane emulsionthe possess good dispersion, stable storage and high thermal stability.

Key words:cationchain extendersurface tensionsitu
出版日期:2019-09-25发布日期:2019-09-25整期出版日期:2019-09-25
ZTFLH: 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]. 兴发pt登录学报, 2019, 36(9): 65-68.
TIAN Jing, GUO Huijun, YANG Weilong, YANG Chuncai. Synthesis and Study of in Situ Nano-SiO2Cationic Waterborne Polyurethane Emulsion. Journal of Jilin Institute of Chemical Technology, 2019, 36(9): 65-68.
链接本文:
http://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2019.09.015http://xuebao.jlict.edu.cn/CN/Y2019/V36/I9/65
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