کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7105589 | 1460482 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Graphene oxide as flexibilizer for epoxy amine resins
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
A variety of surface areas and compositions were prepared by combination of a fast heating rate and different drying methods. The combination of freeze drying with a fast heating rate leads to a large specific surface area of 680 m2/g. The morphologies of the particles were observed by scanning electron microscope and the BET surface area was measured with nitrogen-physisorption. The exfoliation quality was measured by XRD. The generated graphene oxide and thermally reduced graphene oxide particles were mixed with epoxy-amine resin. The curing behaviour was studied with rheological and differential scanning calorimetry (DSC) measurements. We observed that different surface functionalities lowers the Glass transition temperature and the gel time of an epoxy-amine curing system. In addition, we found that generated graphene oxide acts as flexibilizer. An increase of the deformation from 2.5â¯mm to 3.1â¯mm was measured by Erichsen Cupping Test.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 122, September 2018, Pages 280-289
Journal: Progress in Organic Coatings - Volume 122, September 2018, Pages 280-289
نویسندگان
Andreas Wolk, Marta Rosenthal, Julia WeiÃ, Markus Voigt, Jan-Niklas Wesendahl, Marc Hartmann, Guido Grundmeier, Rene Wilhelm, Gerson Meschut, Michael Tiemann, Wolfgang Bremser,