Study on preparation and property of self-healing PU elastomer based on multiple hydrogen bond

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  • Key Laboratory of Synthesis and Biocolloids,Ministry of Education,School of Chemistry and Material Engineering,Jiangnan University,Wuxi 214122

Received date: 2020-04-01

  Revised date: 2021-04-22

  Online published: 2021-08-19

Abstract

Polyurethane(PU) elastomers were prepared by polyglycol as the soft segments,and MDI and IPDI as the hard segments.PNAGA/PU elastomers were prepared by in-situ polymerization of NAGA in the polyurethane matrix using photo-initiation.The mechanical properties test showed that PNAGA/PUPTMG-2000-3∶1 had higher mechanical properties.The results indicated that multiple hydrogen bonds could increase the interactions between polymer chains.The repair efficiency of the self-healing elastomer based on dynamic hydrogen bonds can reach 90%.Moreover,the PU elastomer cost less work to overcome internal friction,and the elastomer had better fatigue resistance due to chain segment rearrangement.

Cite this article

Li Yayu, Zhou Tianyang, Shi Dongjian, Chen Mingqing . Study on preparation and property of self-healing PU elastomer based on multiple hydrogen bond[J]. New Chemical Materials, 2021 , 49(7) : 89 -93 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.07.021

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