Results 261 to 270 of about 209,631 (316)
Synthesis of 2-Naphthols via a Trifluoroacetic Acid-Mediated Epoxy Alcohol Rearrangement. [PDF]
J Org ChemStory JB +4 more
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Toughening of epoxy systems by brominated epoxy
Polymer Engineering & Science, 2018Blends of brominated epoxy (BE) and conventional epoxy resins were studied following curing with aliphatic triethylenetetramine (TETA), etheric (polyether diamine‐ PEA4), and aromatic (3,3′‐diamino diphenyl sulfone [DDS]) hardeners. The addition of BE resulted in an increase in Tg in all tested blends. Blends with 50 wt% BE cured with TETA demonstrated
Lizzie Sheinbaum +5 more
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Epoxy-Layered Silicate and Epoxy MWCNTs Nanocomposites
Applied Mechanics and Materials, 2011The paper deals with the rheological properties of epoxy resin additivated with organically modified montmorillonites, carbon nanotubes and nanocarbon. The paper also presents the influence of nanoadditives over composites mechanical properties. The epoxy polymer is diglycidyl ether of bisphenol A (DGEBA) and the curing agent is an aliphatic tetraamine.
A. Stan +8 more
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Characterization of the aramid: Epoxy and carbon: Epoxy interphases
Polymer Composites, 1985AbstractThe matrix/reinforcement interphase in aramid fiber/epoxy and carbon fiber/epoxy composites were modeled by coating an internal reflection spectroscopy (IRS) element with a thin layer of an aramid or of carbonized poly(acrylonitrile) (PAN).
Andrew Garton, John H. Daly
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Epoxy‐amine networks with varying epoxy polydispersity
Journal of Applied Polymer Science, 2014ABSTRACTSolid, high molecular weight DGEBA‐based epoxies were blended with high purity liquid DGEBA to create several resins with equivalent epoxy equivalent weights, but with polydispersity indices (PDIs) ranging from 3 to over 10. The resins were cured with a stoichiometric amount of polyetheramine and compared to a nonblended epoxy with PDI of 1.8 ...
Ian M. Mc Aninch +3 more
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Multiscale Modeling of Epoxies and Epoxy-Based Composites
2020Epoxies play an important role in determining the performance of epoxy-based composites, coatings, and adhesives. Multiscale modeling methods emerge as a complementary tool to conventional experimental and theoretical approaches and are widely used to study the relationships between processing, structure, and property of polymer materials.
Xiawa Wu, Jaafar A. El-Awady
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Thiol-epoxy and Amine-epoxy ‘Click’ Polymerizations
2018Although an old reaction, the interest in the thiol-epoxy reaction, especially as a polymerization process, is only recent. The power of this chemistry lies in its efficiency and operation under ambient conditions, the commercial availability of a vast variety of thiol- and epoxide-carrying molecules that can be utilized as monomers, the long list of ...
Mihaiela C. Stuparu, Anzar Khan
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Reuse of cured epoxy as a reinforcement in an epoxy composite
Polymer Engineering & Science, 2012AbstractThis article discusses the reuse of a thermoset‐based epoxy polymer. In this method, cured epoxy polymer is ground to powder of particle size ranging from 1 to 30 μm. The ground epoxy is then filled in an epoxy polymer to form an epoxy–epoxy composite system using both room and high temperature processing.
T.P. Mohan, K. Kanny
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Epoxy Functionalized Hyberbranched Polymer/Epoxy Blends
1999Abstract : In this preliminary study, two novel hyperbranched polymer (HBP)/epoxy blends were evaluated to determine their efficiency as blend modifiers and tougheners in a brittle epoxy resin. The HBP is miscible in the epoxy and phase separates as cure progresses to form a two-phase system with a dispersed secondary phase of HBP/epoxy compatibilizers
Alan R. Teets +2 more
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