中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (09): 1031-1035.

• 研究论文 • 上一篇    下一篇

PCDL型超支化水性聚氨酯的合成与性能

刘丹1,曾少敏1,姚畅1,陈爱芳1,徐祖顺1,2   

  1. (湖北大学q.材料科学与工程学院；2.有机功能分子与应用教育部重点实验室 武汉 430062)
  • 收稿日期:2008-08-28 修回日期:2008-11-04 出版日期:2009-09-10 发布日期:2009-09-10
  • 通讯作者: 徐祖顺，男，教授，博士生导师; E-mail:zushunxu@hubu.edu.cn; 研究方向：乳液聚合、“活性”/可控聚合、微波聚合等
  • 基金资助:
    湖北省杰出人才基金资助项目(2004ABB003)

Synthesis and Properties of Hyperbranched Waterborne Polyurethane based on polycarbonatediol

 LIU Dan1, CENG Shao-Min1, YAO Chang1, CHEN Ai-Fang1, XU Zhu-Shun1,2   

  1. (1.College of Materials Science and Engineering; 2.MinistryofEducation Key Laboratory for the Synthesis and Application of Organic Functional Molecules,Hubei University,Wuhan 430062)
  • Received:2008-08-28 Revised:2008-11-04 Published:2009-09-10 Online:2009-09-10

PDF

2733

被引次数

26 | 4

摘要：

以甲苯-2，4-二异氰酸酯（TDI）、聚碳酸酯二醇（PCDL）、二羟甲基丙酸（DMPA）和二乙醇胺（DEOA）为原料，采用A2＋bB2共聚合路线合成了具有超支化结构的水性聚氨酯（HBAPU）乳液。采用红外光谱（FT-IR）、核磁共振（13C NMR）对产物结构进行了表征，证实了超支化聚氨酯的支化度随 n(NCO)/n(OH)比值的增大而增大。用PCS、TG、电子拉力机对产物的性能进行了测试，同时也对胶膜的耐水性进行了测试，发现在DMPA含量为0.4 mmol/g时，HBAPU的粒径仅有20.57 nm，而线性水性聚氨酯粒径有130.91 nm，并且HBAPU具有良好的耐水性、热稳定性和较高的拉伸强度。

关键词: 超支化, 水性聚氨酯, 合成, 性能

Abstract:

Hyperbranched Waterborne Polyurethane (HBAPU) was synthesized via A2+bB2 approach using 2,4-toluylene diisocyanate(TDI), polycarbonatediol (PCDL) ,dimethylol propionic acid (DMPA) and diethanol amine (DEOA) as materials. The structure of the products were characterized by FT-IR and 13C NMR. The result showed that the degree of the branching (DB) of the HBAPU increased with the molar ratio of the NCO/OH increased. The properties of the products were measured by PCS, TG, tensile tests ,the water-resistant of the cast films were also investgated.the partical sizes of the HBAPU was 20.57 nm, compareing with that of line aqueous polyurethane with 130.91 nm when the content of DMPA was 0.4 mmol/g,meanwhile, the HBAPU exhibited good water resistant, heat resistance and tensile strength.

Key words: Hyperbranched, Waterborne polyurethane, Synthesis, Properties

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