Characterization of Hollow Cathode Performance and Thermal Behavior

2006 ◽  
Author(s):  
James Polk ◽  
Dan Goebel ◽  
Ron Watkins ◽  
Kristina Jameson ◽  
Lance Yoneshige
Keyword(s):  
Thermal Behavior ◽  
Hollow Cathode

Synthesis and characterization of some polyimide-epoxy composites

e-Polymers ◽  
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Toheed Akhter ◽  
Humaira Masood Siddiqi ◽  
Zareen Akhter ◽  
M. Saeed Butt
Keyword(s):  
Thermal Behavior ◽  
Epoxy Resins ◽  
Analytical Techniques ◽  
Char Yield ◽  
Epoxy Composites ◽  
Hydroxyl Group ◽  
Synthesis And Characterization ◽  
Tetracarboxylic Acid ◽  
Epoxy Amine

AbstractComposites from some novel polyimide and commercial epoxy were prepared aiming to improve the thermal behavior of epoxy resins. Two diamines namely 4-4'-diamino-4''-hydroxytriphenyl methane (DHTM) and 4-4'- diaminotriphenyl methane (DTM) were synthesized by reacting aniline and aldehydes according to a reported method. The synthesized diamines were blended with commercially available epoxy 1, 4-butanedioldiglycidylether (BDDE) to synthesize model epoxy amine networks which were compared with polyimideepoxy composites. The polyimides were synthesized by reaction of these diamines with aromatic anhydride namely 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride (BTDA). These synthesized polyimides were dispersed in epoxy diamine networks to prepare composites. All the monomers and composites were characterized by making use of various analytical techniques including FTIR, NMR, TGA, DSC and XRD. Presence of hydroxyl group in the diamine helped in better dispersion of polyimide leading to high Tg and high char yield at 600 °C.

Characterization of hollow cathode vacuum arc with axial magnetic field as a concentrated heat source

Vacuum ◽  
2019 ◽  
Vol 160 ◽  
pp. 70-74 ◽  
Author(s):  
Jianping Xu ◽  
Xiubo Tian ◽  
Haiqun Qi ◽  
Jiajie Wang ◽  
Chunzhi Gong ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Source ◽  
Hollow Cathode ◽  
Axial Magnetic Field ◽  
Vacuum Arc

Characterization of the interaction between a hollow cathode source and an ambient plasma

1992 ◽  
Vol 71 (10) ◽  
pp. 4709-4717 ◽  
Author(s):  
G. Vannaroni ◽  
M. Dobrowolny ◽  
E. Melchioni ◽  
F. De Venuto ◽  
R. Giovi
Keyword(s):  
Hollow Cathode ◽  
Ambient Plasma
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