高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (7): 1639.

• 研究论文 • 上一篇    下一篇

多代超支化水性聚氨酯的合成及表征

孙宁1,2,柳宇航2,童真1   

  1. 1. 华南理工大学材料科学研究所, 广州 510640;
    2. 五邑大学化学与环境工程学院, 江门 529020
  • 收稿日期:2010-08-24 修回日期:2010-10-22 出版日期:2011-07-10 发布日期:2011-06-02
  • 通讯作者: 孙宁;童真 E-mail:wyuchemsn@126.com;mcztong@ scut.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20534020, 50773024)和广东省科技计划项目(批准号: 2005B10301010)资助.

Synthesis and Characterization of Multi-generations Hyperbranched Waterborne Polyurethane

SUN Ning1,2*, LIU Yu-Hang2, TONG Zhen1*   

  1. 1. Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China;
    2. School of Chemical & Environmental Engineering, Wuyi University, Jiangmen 529020, China
  • Received:2010-08-24 Revised:2010-10-22 Online:2011-07-10 Published:2011-06-02
  • Contact: SUN Ning;TONG Zhen E-mail:wyuchemsn@126.com;mcztong@ scut.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20534020, 50773024)和广东省科技计划项目(批准号: 2005B10301010)资助.

PDF (PC)

被引次数

24

摘要： 以甲苯-2,4-二异氰酸酯(TDI)、二羟甲基丙酸(DMPA)和二乙醇胺(DEOA)为原料通过偶合单体反应法合成了一系列不同代数的超支化水性聚氨酯(HPU)，通过红外光谱(FT-IR)和核磁共振波谱（NMR）对其结构进行了表征，利用三检测器的凝胶渗透色谱(GPC3)测定各代产品分子量，采用热重分析仪(TG)和示差扫描量热仪(DSC)对各代HPU及类似化学组成的线性水性聚氨酯(LPU)的热性能进行测试分析对比，结果表明，合成各代HPU产率最高可达91%；TG分析表明各代数HPU与LPU具有相近的初始分解温度，大约在200℃左右，但各代HPU与LPU的分解历程明显不同；DSC结果表明各代HPU产品的玻璃化温度(Tg)明显高于LPU，同时随着代数增高，Tg逐步由115.2℃升高到150.3℃；对比各代HPU掺杂涂膜发现，随代数的增加，光泽度和硬度明显提高。

Abstract: A series of different generation hyperbranched waterborne polyurethanes(HPU) was prepared successfully from toluene 2,4-diisocyanate (TDI), dimethylol propionic acid(DMPA) and diethanol amine(DEOA) via monomer coupling reaction. The highest yield of the HPUs was up to 91%. The HPU products(generation from 2 to 5) and the line waterborne polyurethane(LPU), which have a similar chemical component, were characterized by the FT-IR, NMR, thermo gravimetric analyzer(TG) and differential scanning calorimeter(DSC), respectively. The molecular weights of the HPUs were measured by triple-detectors GPC; FT-IR and 13C NMR results proved that the hyperbranched structure was synthesized successfully. TG results showed that different generation HPUs and LPU had a similar initial degradation temperature at about 200℃.But the HPUs and LPU had a different degradation course obviously.; DSC results showed that the Tg of HPUs were higher than LPU apparently, and with the increasing of the generation, the Tg of HPUs rose from 115.2℃ to 150.3℃. Comparing with the different generation HPUs with LPU mixed films, the gloss and hardness improve significantly.

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