Synthesis and characterization of new nanocomposites based on epoxy resins and organophilic clays

2007 ◽  
Vol 56 (9) ◽  
pp. 1106-1114 ◽  
Author(s):  
Sorina-Alexandra Gârea ◽  
Horia Iovu ◽  
Stefania Stoleriu ◽  
Georgeta Voicu
Keyword(s):  
Epoxy Resins ◽  
Synthesis And Characterization ◽  
Organophilic Clays

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.

scholarly journals Synthesis and characterization of PEDMCD as a flame retardant and its application in epoxy resins

RSC Advances ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 2756-2766
Author(s):  
Yi Zhang ◽  
Weiwei Yang
Keyword(s):  
Flame Retardant ◽  
Epoxy Resins ◽  
Synthesis And Characterization ◽  
Direct Polycondensation ◽  
Polycondensation Reaction ◽  
Highly Effective

In this study, a highly effective flame retardant agent, called polybicyclopentaerythritol phosphate-O-4-imino-p-phenylmethane-4-imino-2-chloro-1,3,5-s-triazine (PEDMCD), has been prepared through a direct polycondensation reaction.

scholarly journals Synthesis and characterization of SPDSCD and its flame retardant application on epoxy resins

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 28654-28663
Author(s):  
Yi Zhang ◽  
Weiwei Yang ◽  
Wei Zhao ◽  
Fang Ruan ◽  
Shulei Li ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Resins ◽  
Synthesis And Characterization ◽  
Direct Polycondensation ◽  
Polycondensation Reaction

In this study, a flame retardant agent, 2,4,8,10-tetraoxo-3,9-diphosphospiro[5.5]undecane spirophosphate-4,4-diaminopair benzene disulfone-1,3,5-himetriazine (SPDSCD), is synthesized through a direct polycondensation reaction.

Synthesis and characterization of epoxy resins containing transition metals

Polymer ◽  
1993 ◽  
Vol 34 (13) ◽  
pp. 2860-2864 ◽  
Author(s):  
Manjit Anand ◽  
A.K. Srivastava
Keyword(s):  
Transition Metals ◽  
Epoxy Resins ◽  
Synthesis And Characterization

scholarly journals Synthesis and characterization of epoxy resins from fast pyrolysis bio-oil

2018 ◽  
Vol 6 (2) ◽  
pp. 76-84 ◽  
Author(s):  
Mehul Barde ◽  
Sushil Adhikari ◽  
Brian K Via ◽  
Maria L Auad
Keyword(s):  
Epoxy Resins ◽  
Fast Pyrolysis ◽  
Synthesis And Characterization ◽  
Bio Oil

scholarly journals Synthesis and characterization of kraft lignin-based epoxy resins

BioResources ◽  
2011 ◽  
Vol 6 (3) ◽  
pp. 2492-2503
Author(s):  
Nour-Eddine El Mansouri ◽  
Qiaolong Yuan ◽  
Farong Huang
Keyword(s):  
Thermal Stability ◽  
Epoxy Resins ◽  
1H Nmr Spectroscopy ◽  
Kraft Lignin ◽  
Synthesis And Characterization ◽  
Index Test ◽  
Optimal Conditions ◽  
Application Potential ◽  
Thermal Stability Of

Epoxidization is an interesting way to develop a new application of lignin and therefore to improve its application potential. In this work, kraft lignin-based epoxy resins were obtained by the epoxidization reaction, using the kraft lignin recovered directly from pulping liquor and modified by a methylolation reaction. The methylolated lignins were obtained by the reaction of original kraft lignin with formaldehyde and glyoxal, which is a less volatile and less toxic aldehyde. 1H-NMR spectroscopy showed that methylolated kraft lignin has more hydroxymethyl groups than glyoxalated kraft lignin. For the epoxidization reaction we studied the influence of the lignin:NaOH (w/w) ratio, temperature, and time of the reaction on the properties of the prepared epoxidized lignins. The structures of lignin-based epoxy resins were followed by epoxy index test and FTIR spectroscopy. Optimal conditions were obtained for lignin-based epoxy resin produced at lignin/NaOH = 1/3 at 70 ºC for 3h. Thermogravimetry analysis (TGA) revealed that the epoxidization enhances the thermal stability of lignins and may allow a wider temperature range for applications with lignin epoxy-PF blends.

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