Silyl-crosslinked urethane elastomer modifying epoxy resin: I. Morphological studies

Pinggui Liu, Lihua He, Heyan Ding, Junneng Liu, Xiaosu Yi

Research output: Journal PublicationArticlepeer-review

2 Citations (Scopus)


Silyl-crosslinked urethane elastomer modifying epoxy resin has drawn much interest. Here triethoxysilyl-terminated polycaprolactone elastomer (PCL-TESi) modifying diglycidylether of bisphenol A epoxy resins (DGEBA) system was chosen; then the effect of the type of curing agent on the phase structure of the studied system was investigated. The modified systems with different phase structures were obtained by varying the formulations of the curing agents. It was experimentally shown that the crosslinked density was greatly increased by the addition of an aminosilane curing agent (KBE-9103). And the SEM and TEM analysis of the cured system showed that the addition of KBE-9103 increased the compatibility between the PCL-TESi and DGEBA, but decreased the ductility of the systems. The TEM results indicated that the addition of too much of the KBE-9103 made the resulting silicone particles coagulate with each other. The state of phase separation from the TEM in the cured system was explained theoretically. These considerations would serve the deeper studies of the mechanism of silyl-crosslinked urethane elastomer modifying epoxy resin in the future.

Original languageEnglish
Pages (from-to)139-148
Number of pages10
JournalJournal of Polymer Research
Issue number2
Publication statusPublished - Jun 2005
Externally publishedYes


  • Compatibility
  • Epoxy resin
  • Phase structure
  • Triethoxysilyl-terminated polycaprolactone elastomer

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry


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