高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (8): 1410.

• 研究论文 • 上一篇    下一篇

超支化聚酯的改性及其结晶性能的研究

寇会光, 朱胜武, 施文芳   

  1. 中国科学技术大学火灾科学国家重点实验室, 应用化学系, 合肥 230026
  • 收稿日期:2000-02-16 出版日期:2001-08-24 发布日期:2001-08-24
  • 通讯作者: 施文芳(1945年出生),女,博士,教授,博士生导师,主要从事超支化聚合物和紫外光固化研究.
  • 基金资助:

    国家自然科学基金(批准号:20074304)

Crystalline Characters of Modified Hyperbranched Polyester

KOU Hui-Guang, ZHU Sheng-Wu, SHI Wen-Fang   

  1. State Key Laboratory of Fire Science and Department of Applied Chemistry, University of Science and Technology of China, Hefei 230026, China
  • Received:2000-02-16 Online:2001-08-24 Published:2001-08-24

PDF (PC)

被引次数

47

摘要： 用十六酰氯和十八异氰酸酯分别对端羟基的超支化聚酯BoltornTMH20改性,可获得粉末状超支化低聚物,具有无定形“内核”及可结晶“外壳”的分子结构.实验结果表明,采用十八异氰酸酯改性的丙烯酸化超支化聚酯的熔点高于十六酰氯改性聚合物.

关键词: 超支化聚酯, 粉末涂料, 结晶性

Abstract: To obtain a new kind of resin for practical UVcurable powder coating systems, hyperbranched polyester, BoltornTM H20, was modified with octadecyLIsocyanate (or palmitoyl chloride) and acryloyl chloride, thus resulting in an UVcurable resins with crystalline molecular shell and amorphous interior. The high melting point( Tm) can be resulted largely by the crystalline area of the crystallizable moieties. The degree of crystallinity is higher with more crystallizable moieties. As a result, Tm of the resin modified with octadecyLIsocyanate is higher than that of one modified with palmitoyl chloride. The hyperbranched polyester BoltornTM H20 modified with octadecyLIsocyanate maybe used for powder coating systems.

Key words: Hyperbranched polyester, Powder coating, Crystallinity

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