Application of ionic liquids in thermosetting polymers: Epoxy and cyanate ester resins
نویسندگان
چکیده
منابع مشابه
Nanoporous Polymer Films of Cyanate Ester Resins Designed by Using Ionic Liquids as Porogens
Novel nanoporous film materials of thermostable cyanate ester resins (CERs) were generated by polycyclotrimerization of dicyanate ester of bisphenol E in the presence of varying amounts (from 20 to 40 wt%) of an ionic liquid (IL), i.e., 1-heptylpyridinium tetrafluoroborate, followed by its quantitative extraction after complete CER network formation. The completion of CER formation and IL extra...
متن کاملEffects of Chemical Structure Changes on Curing Reactions and Thermal Properties of Cyanate Ester-Cured Rigid-Rod Epoxy Resins
How chemical structure changes affect the curing reactions and thermal properties of 2,2 -bis(4-cyanatophenyl) propane (cyanate ester) cured rigid-rod epoxy resins has been studied for biphenol and tetramethyl biphenol epoxies. The formation of an oxazolidinone ring is the dominant curing reaction for biphenol epoxy, whereas the formation of a cyanurate ring is the dominant curing reaction for ...
متن کاملNanoporous Cyanate Ester Resins: Structure-Gas Transport Property Relationships
This contribution addresses the relationships between the structure and gas transport properties of nanoporous thermostable cyanate ester resins (CERs) derived from polycyclotrimerization of 1,1'-bis(4-cyanatophenyl)ethane in the presence of 30 or 50 wt% of inert high-boiling temperature porogens (i.e., dimethyl- or dibutyl phthalates), followed by their quantitative removal. The nanopores in t...
متن کاملThe Toughening of Cyanate-Ester Polymers Part II: Chemical Modification
_______________________________________________________________________________________ A fracture mechanics approach has been used to investigate how the addition of high-temperature resistant thermoplastic modifiers can increase the fracture energy, Gc, of brittle cyanate-ester polymers. Tests were performed using adhesive joint specimens at -55, 21 and 150°C. The fracture energies of poly(et...
متن کاملCharacterization of advanced cyanate ester/epoxy insulation systems before and after reactor irradiation
Insulation systems for fusion magnets have to operate in a harsh environment, especially also under intense radiation. Over the past years, cyanate ester (CE) resins have been playing an increasingly important rolebecauseof their enhanced temperatureandradiation resistancecompared toconventional epoxy resins. Blending CEwith epoxy resins offers the possibility tomanufacture radiation resistant ...
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ژورنال
عنوان ژورنال: Express Polymer Letters
سال: 2018
ISSN: 1788-618X
DOI: 10.3144/expresspolymlett.2018.77