Cure kinetics of epoxy/MWCNTs nanocomposites: Isothermal calorimetric and rheological analyses

被引：56
作者：
Vijayan, Poornima P. [1 ]
Puglia, Debora [2 ]
Rastin, Hadi [3 ]
Saeb, Mohammad Reza [4 ]
Shojaei, Behrouz [5 ]
Formela, Krzysztof [6 ]
机构：
[1] Qatar Univ, Ctr Adv Mat, POB 2713, Doha, Qatar
[2] Univ Perugia, Mat Engn Ctr, UdR INSTM, Dept Civil & Environm Engn, Str di Pentima 4, I-05100 Terni, Italy
[3] Univ Tehran, Coll Engn, Sch Chem Engn, POB 11155-4563, Tehran, Iran
[4] Inst Color Sci & Technol, Dept Resin & Addit, POB 16765-654, Tehran, Iran
[5] Amirkabir Univ Technol, Dept Polymer Engn & Color Technol, Tehran, Iran
[6] Gdansk Univ Technol, Fac Chem, Dept Polymer Technol, G Narutowicza Str 11-12, PL-80233 Gdansk, Poland
来源：
PROGRESS IN ORGANIC COATINGS | 2017年 / 108卷
关键词：
Isothermal cure kinetics; Epoxy; Anhydride; Rheological behavior; Amine functionalization; WALLED CARBON NANOTUBES; EPOXY-RESIN; SURFACE MODIFICATION; RAMAN-SPECTROSCOPY; THERMAL-ANALYSIS; CURING KINETICS; COMPOSITES; FUNCTIONALIZATION; NANOCLAY; BEHAVIOR;
D O I：
10.1016/j.porgcoat.2017.04.005
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A combinatorial route has been applied in cure kinetics study of epoxy nanocomposites containing multi-walled carbon nanotubes (MWCNTs) based on differential scanning calorimetry and rheokinetic analyses under isothermal conditions. Pristine and amine-modified MWCNTs bearing primary and secondary amines were used at very low concentrations (0.1 and 0.3 wt.% based on epoxy weight). Model-free and model-fitting methods were applied on calorimetric data, and Kamal autocatalytic model revealed good agreement with the experimental data, In case of epoxy filled with amine-modified MWCNTs, activation energy took a value lower than that obtained for sample containing pristine MWCNTs at an identical loading because of less hindrance brought about by curing. Isothermal rheokinetic studies supported formation of a filler network during processing, which hindered epoxy-anhydride cure reaction at higher MWCNTs loadings leading to a highly crosslinked epoxy network.
引用
收藏
页码：75 / 83
页数：9
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