Synthesis and characterization of liquid crystalline epoxy resins to study the effect of mesogenic length on the physical properties

2021 ◽  
Vol 28 (2) ◽  
Author(s):  
Yi-Sheng Lin ◽  
Steve Lien-Chung Hsu ◽  
Tsung-Han Ho ◽  
Li-Cheng Jheng ◽  
Yu-Hsiang Hsiao
Keyword(s):  
Physical Properties ◽  
Epoxy Resins ◽  
Liquid Crystalline ◽  
Synthesis And Characterization ◽  
Liquid Crystalline Epoxy

The effect of prepolymer composition of amino-hardened liquid crystalline epoxy resins on physical properties of cured thermoset

1999 ◽  
Vol 148 (1) ◽  
pp. 197-209 ◽  
Author(s):  
Cosimo Carfagna ◽  
Eugenio Amendola ◽  
Marta Giamberini ◽  
Alberto D'Amore ◽  
Aldo Priola ◽  
...  
Keyword(s):  
Physical Properties ◽  
Epoxy Resins ◽  
Liquid Crystalline ◽  
Liquid Crystalline Epoxy

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.

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