Three-group type mechanism in the curing behavior of polyacrylate and blocked toluene diisocyanate

W. Zheng, Y. Kobayashi, K. Hirata, T. Miura, T. Kobayashi, M. Iwaki, T. Oka, Y. Hama

研究成果: Article

4 被引用数 (Scopus)

抄録

The curing behavior of two resins, five blocked toluene diisocyanate (TDI) crosslinkers and polyacrylate, was studied using Torsional Braid Analysis (TBA) to examine their dynamic mechanical properties. The curing process was clearly divided into two stages. Associated with data from in situ FTIR at the molecular level, the first stage was the reaction of deblocked NCO and hydroxyl in polyacrylate. In the second stage, the deblocked NCO attacked the hydrogen in NH group of the urethane bond to conduct deep curing. Computer modelling was used to investigate the lowest-energy configuration of the crosslinker molecule. The space hindrance effect in the molecule causes this type of three-group crosslinking curing mechanism in the blocked TDI crosslinker.

本文言語English
ページ(範囲)112-120
ページ数9
ジャーナルJournal of Applied Polymer Science
83
1
DOI
出版ステータスPublished - 2002 1 3
外部発表はい

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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