A Study of Resin Fracture Toughness: Comparison of Particle-toughened Thermosetting Resin and Micro Phase-separated Thermosetting Resin

Cure cycle dependency on resin toughness was studied on particle toughened thermosetting resin compared with phase separation type of thermosetting resin systems. The study revealed that the particle toughened system results in more stable resin fracture toughness KIC than the phase separation type....

Full description

Saved in:
Bibliographic Details
Published inMaterials System Vol. 37; pp. 29 - 35
Main Authors ODAGIRI, Nobuyuki, KISHI, Hajime, LEE, Dongyeon, OKABE, Tomonaga
Format Journal Article
LanguageEnglish
Published Kanazawa Institute of Technology, Materials System Research Laboratory 2020
Subjects
CFRP
Epoxy resin
Heating rate
Robustness
thermal management
Toughness
Online AccessGet full text

Cover

More Information
Summary:Cure cycle dependency on resin toughness was studied on particle toughened thermosetting resin compared with phase separation type of thermosetting resin systems. The study revealed that the particle toughened system results in more stable resin fracture toughness KIC than the phase separation type. 3900 resin system is applied in order to represent the particle toughened system. As a model of phase separation type of thermosetting resin system, diglycidyl ether of bisphenol A (DGEBA)/polyethersulfone (PES)/diamino diphenyl methane (DDM) system is applied for the phase separation type thermosetting system in which phase separation of the PES occurs upon cure forming distinct domains. As a control for the phase separation system, DGEBA/DDM system which is without the thermoplastic component is examined to evaluate the basic epoxy / hardener cured resin. A wide range of heating rate was applied for the curing conditions. 3900 resin system demonstrated stable KIC range. However, DGEBA/DDM/PES system showed significant change with increasing heating rate. On the other hand, the thermosetting resin system DGEBA/DDM which is with no PES that has no micro phase separation was constant regardless of heating rate. This toughness change was supported by the cured resin morphology observation. Consequently, phase separation type thermosetting resin systems is more influenced by the heating rate, whereas particle toughened thermosetting resin is less influenced by the heating rate.
ISSN:2435-1520
2435-3159
DOI:10.34401/materialssystem.37.0_29