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Showing 1 to 5 of 5 for “"phenolic networks"”.
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Void-Free Flame Retardant Phenolic Networks: Properties and Processability
Phenolic resins are important components of the composite industry because of their excellent flame retardance and cost effectiveness. However, the common procedure for curing phenolic novolac resins uses hexamethylenetetramine (HMTA) and releases volatiles during the cure, which produce networks …
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High Performance Materials Containing Nitrile Groups
… this thesis has been to improve the toughness of phenolic networks while maintaining flame resistance. A four step synthetic scheme has been developed to prepare 4,4′-Bis(3,4-dicyanophenoxy)biphenyl(biphenoxyphthalonitrile). A 700 g mol-1 novolac oligomer was cured with relatively low …
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Cresol Novolac/Epoxy Networks: Synthesis, Properties, and Processability
Void-free phenolic networks have been prepared by the reaction of phenolic novolac resins with various diepoxides. The stoichiometric ratio can be adjusted to achieve networks with good mechanical properties while maintaining excellent flame retardance. A series of linear, controlled molecular …
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Engineering translational vaccine delivery systems with the polyphenol tannic acid
… upon previous work utilizing TA-containing metal phenolic networks for cell membrane engineering, we fabricated a cell membrane-bound formulation for local drug delivery to dendritic cell (DC) vaccines termed META (Membrane Engineering using Tannic Acid). DC vaccines hold great potential for a …
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Novel Novolac-Phthalonitrile and Siloxane-Phthalonitrile Resins cured with low melting Novolac Oligomers for Flame Retardant Structural Thermosets
… employed (200 ºC, 1 h and 225 ºC, 4h) to produce networks with high glass transition temperatures (> 250 ºC). A decrease in the sharp band at 2230 cm⁻¹, attributed to the nitrile functionality of the phthalonitrile resin, was monitored in FTIR studies and indicated the progress of the reactions. …