Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Kathy C. Chuang"'
Autor:
Frances I. Hurwitz, Linda McCorkle, Matthew J. Degges, Dean M. Tigelaar, Stephanie L. Vivod, Daniel A. Scheiman, Scott C. Splinter, Derek J. Quade, Kathy C. Chuang, Kenneth K. Kuo
Publikováno v:
Journal of Thermophysics and Heat Transfer. 28:401-409
A novel series of ablative composites containing a hyperbranched polyazomethine synthesized inside a carbon fiber preform (HyPAZA) were prepared, which have similar density to phenolic impregnated carbon ablators (∼0.3 g/cc). A novel method of synt
Publikováno v:
Journal of Composite Materials. 43:153-174
Polyimide matrices extend the role of composite materials to applications in extreme temperature environments. However, composites can be susceptible to damage under extreme hygrothermal environments such as rapid heating of moisture saturated materi
Publikováno v:
Journal of Applied Polymer Science. 102:3471-3479
Moisture diffusion properties of the polyimide HFPE-II-52 were determined using weight gain, weight loss, and swelling experiments over a temperature range of 25–200°C. Below 100°C, diffusivity was measured using standard weight loss and weight g
Publikováno v:
Journal of Applied Polymer Science. 100:3255-3263
The polyimide HFPE-II-52 was developed at NASA Glenn Research Center for use as a matrix in high temperature composite materials. The unique properties of such composites stem largely from the performance of the matrix at high temperature. Thus, as p
Publikováno v:
High Performance Polymers. 15:459-472
6F-Polyimides with a phenylethynyl endcap (HFPE) were fabricated into carbon fiber composites using the standard polymerization of monomer reactant (PMR) approach via the ester/acid route. T650-35/HFPE carbon fiber composites were evaluated against t
Publikováno v:
Thermochimica Acta. :143-153
Polyimides are attractive for high temperature applications as the matrix resins, due to their excellent thermo-oxidative stability and mechanical properties. As composite materials for aerospace applications, they possess certain unique characterist
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 64:477-485
A novel PMR polyimides (TMBZ-15) based on substituted benzidines is examined and compared to state-of-the-art PMR-15. The mechanism for the thermal decomposition of two specific PMR polyimides is obtained using TG/FTIR/MS techniques. In order to veri
Publikováno v:
Polymer. 41:5001-5009
A bis[pyrylium tetrafluoromethanesulfonate (triflate)], i.e. p -bis[4-(2,6-diphenylpyrylium)]benzene ditriflate) ( 3 ), has been prepared and polymerized with a series of aromatic diamines. The polymerizations, which were carried out in a dimethylsul
Autor:
Fuming Li, Zongquan Wu, Liyan Huang, Stephen Z. D. Cheng, Xigao Jin, F. W. Harris, Richard E. Lyon, Yameng Shi, Kathy C. Chuang, S. Fang
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 59:361-373
The thermal mechanical properties and degradation behaviors were studied on fibers prepared from two high-performance, heterocyclic polymers, poly(p-phenylenebenzobisthiazole) (PBZT) and poly(p-phenylenebenzobisoxazole) (PBZO). Our research demonstra
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 37:2559-2567
A series of polyimides derived from a newly synthesized diamine, namely, 4,4-bis(4-aminophenoxy)-2,2-dimethylbiphenyl (BAPD), were developed and characterized. Their physical and thermal properties were compared to polyimides based on'commercially av