高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (12): 1242.

• 研究论文 • 上一篇    下一篇

不同硬段含量嵌段聚脲合成及性质的研究

陈竹生   

  1. 烟台大学化生系
  • 收稿日期:1988-04-26 出版日期:1989-12-24 发布日期:1989-12-24

A Study on Synthesis and Properties of Block Polyurea with Different Hard Segment Content

Chen Zhusheng   

  1. Department of Chemistry and Biology, Yantai Univerity, Beijing
  • Received:1988-04-26 Online:1989-12-24 Published:1989-12-24

摘要: 用两步溶液聚合法合成了硬段含量不同的一系列热塑性嵌段聚脲.研究了影响反应的各种因素.所得聚脲是线性和无定形的.用DSC和DMS法初步研究了这些聚脲的性质,随硬段含量增加.聚脲从软弹性体转变为高模量的硬塑料.

关键词: 聚脲, 聚氯酯, 嵌段共聚物

Abstract: High molecular weight linear polyureas with different hard-segment contents were obtained by using a two-step solution polymerization.Elimination of water, careful choice of solvent, reactant concentration, and good control of reaction temperature are essential to obtain satisfactory results.DMSand DSCwere used to elucidate properties of these polyureas.The polyureas were transformed from a soft elastomer to a high modulus plastic with the increase of segment content.

Key words: Polyurea, Polyurethane, Block copolymer

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