New kinds of phenylethynyl-terminated polyimide oligomers with low viscosity and good hydrolytic stability

HighTgand Thermo‐Oxidatively Stable Thermosetting Polyimides Derived from a Carborane‐Containing Diamine

“…In the field of advanced polymers, thermosetting polyimides (PIs) occupy a preponderant position due to their excellent chemical stability, thermal and mechanical properties . Thermosetting PIs are being designed for aerospace applications to meet the expectation of performance and durability in high temperature oxidative environments .…”

Rheological behaviour and cure kinetic studies of a trifunctional phenylethynyl-terminated imide oligomer

“…Depending on the cross-linking units, imide oligomers include phenylethynyl unit-based oligomers, ethynyl-based oligomers and nadic anhydrideterminated oligomers. Compared to the other thermosetting polyimides, phenylethynyl-terminated imide oligomers (PETIs) have received more attention, [6][7][8][9][10] because PETIs could undergo thermal curing without the evolution of volatile by-products, and the cured resins display high glass transition temperatures (T g s), excellent chemical resistance and better thermal oxidative stability. [11][12][13] Hence, PETIs have been employed as matrices to fabricate carbon fibrereinforced composites for high temperature applications.…”

Proton conductivity and stability of low-IEC sulfonated block copolyimide membrane

“…Specifically, sulfonated six-membered ring (naphthalenic) polyimides have been proposed to be promising materials for a proton exchange membrane, because the polyimides exhibit excellent chemical and thermal stabilities compared to those of fivemembered ring polyimides [13,14]. However, random sulfonated polyimides do not necessarily show a high proton conductivity due to the lack of ordered ionic channels for the proton transport.…”