Network-level analysis of damage in amine-crosslinked diglycidyl ether resins degraded by acid

Jonathon Tanks*, Yoshihiko Arao, Masatoshi Kubouchi

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Amine-crosslinked epoxy resins represent a large fraction of polymers used in structural and coating applications, meaning the characterization and modeling of environmental durability and mechanical reliability is of utmost importance. In particular, chemical storage tanks, sewage systems, and oil/gas infrastructure involve prolonged exposure to organic and inorganic acids. However, the majority of meso-scale models for polymer network degradation are more appropriate for hy-drogels than stiff thermosets; meanwhile, other models developed for acid degradation of ester-containing networks are not applicable to amine-cured epoxies due to the assumption that crosslink density decreases. In this paper, we report the acid uptake and subsequent degradation behavior of bisphenol-F epoxy cured with an aliphatic amine, as well as propose a simple but physically meaningful model for an ideal 2D network that effectively relates acid uptake and polymer structure to the decrease in elastic properties over time. Parameters include crosslink density and acid penetration rate, and the only best-fit parameter is the reaction rate constant. This analysis can be extended to more complex network structures and environmental conditions to model neat resins and composites.

本文言語English
ページ(範囲)488-499
ページ数12
ジャーナルExpress Polymer Letters
16
5
DOI
出版ステータスPublished - 2022 5月

ASJC Scopus subject areas

  • 化学工学一般
  • 物理化学および理論化学
  • ポリマーおよびプラスチック
  • 有機化学
  • 材料化学

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