Controlled topology toughening epoxy via incorporation of partially reacted substructures

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work investigates a new strategy to improve the toughness of epoxy resins by rearranging the topological structure of cross-linked networks. Amine-cured epoxy networks was modified with monoamine functionalized partially reacted substructures (mPRS), synthesized by partially curing tetraglycidyl ether of diaminodiphenylmethane (TGDDM) and a monoamine polyetheramine (Jeffamine M1000). mPRS resins with different degrees of polymerization were added to a mixture of Diglycidyl Ether of Bisphenol A (DGEBA) and cured with Jeffamine D230. The addition of mPRS increased failure strain and energy dissipation. The mechanical properties could be adjusted by controlling the conversion and concentration of mPRS, resulting in yield strength 39 to 59 MPa and failure strain 15% to 44%. The improved ductility was also observed from compression testing. The observed differences came from the conversion of mPRS, which locally influenced the epoxy network topology and further influenced the mechanical behavior of the epoxy systems.

Original languageEnglish (US)
Title of host publicationSAMPE Conference and Exhibition
EditorsKevin Ahlstrom, Jacob Preston Anderson, Scott Beckwith, Andrew Craig Becnel, Paul Joseph Biermann, Matt Buchholz, Elizabeth Cates, Brian Gardner, Jim Harris, Michael J. Knight, German Reyes-Villanueva, Stephen E. Scarborough, Phil Sears, James Thomas, Erik T. Thostenson
PublisherSoc. for the Advancement of Material and Process Engineering
ISBN (Electronic)9781934551301
DOIs
StatePublished - 2019
Externally publishedYes
EventSAMPE 2019 Conference and Exhibition - Charlotte, United States
Duration: May 20 2019May 23 2019

Publication series

NameInternational SAMPE Technical Conference
Volume2019-May

Conference

ConferenceSAMPE 2019 Conference and Exhibition
Country/TerritoryUnited States
CityCharlotte
Period5/20/195/23/19

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Controlled topology toughening epoxy via incorporation of partially reacted substructures'. Together they form a unique fingerprint.

Cite this