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Title: Fluxional Monomers for Enhanced Thermoset Materials.

Abstract

This report catalogues the results of a project exploring the incorporation of organometallic compounds into thermosetting polymers as a means to reduce their residual stress. Various syntheses of polymerizable ferro cene derivatives were attempted with mixed success. Ultimately, a diamine derivative of ferrocene was used as a curing agen t for a commercial epoxy resin, where it was found to give similar cure kinetics and mechanical properties in comparison to conventional curing agents. T he ferrocen e - based material is uniquely able to relax stress above the glass transition, leading to reduced cure stress. We propose that this behavior arises from the fluxional capacity of ferrocene. In support of this notion, nuclear magnetic resonance spectroscopy indicates a substantial increase in chain flexibility in the ferrocene - containing network. Although t he utilization of fluxionality is a novel approach to stress management in epoxy thermosets, it is anticipated to have greater impact in radical - cured ther mosets and linear polymers.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1396074
Report Number(s):
SAND-2017-10344
657269
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Jones, Brad Howard, Alam, Todd M., Black, Hayden T, Celina, Mathias C., and Wheeler, David R.. Fluxional Monomers for Enhanced Thermoset Materials.. United States: N. p., 2017. Web. doi:10.2172/1396074.
Jones, Brad Howard, Alam, Todd M., Black, Hayden T, Celina, Mathias C., & Wheeler, David R.. Fluxional Monomers for Enhanced Thermoset Materials.. United States. doi:10.2172/1396074.
Jones, Brad Howard, Alam, Todd M., Black, Hayden T, Celina, Mathias C., and Wheeler, David R.. 2017. "Fluxional Monomers for Enhanced Thermoset Materials.". United States. doi:10.2172/1396074. https://www.osti.gov/servlets/purl/1396074.
@article{osti_1396074,
title = {Fluxional Monomers for Enhanced Thermoset Materials.},
author = {Jones, Brad Howard and Alam, Todd M. and Black, Hayden T and Celina, Mathias C. and Wheeler, David R.},
abstractNote = {This report catalogues the results of a project exploring the incorporation of organometallic compounds into thermosetting polymers as a means to reduce their residual stress. Various syntheses of polymerizable ferro cene derivatives were attempted with mixed success. Ultimately, a diamine derivative of ferrocene was used as a curing agen t for a commercial epoxy resin, where it was found to give similar cure kinetics and mechanical properties in comparison to conventional curing agents. T he ferrocen e - based material is uniquely able to relax stress above the glass transition, leading to reduced cure stress. We propose that this behavior arises from the fluxional capacity of ferrocene. In support of this notion, nuclear magnetic resonance spectroscopy indicates a substantial increase in chain flexibility in the ferrocene - containing network. Although t he utilization of fluxionality is a novel approach to stress management in epoxy thermosets, it is anticipated to have greater impact in radical - cured ther mosets and linear polymers.},
doi = {10.2172/1396074},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 9
}

Technical Report:

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