کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
673205 1459482 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, curing kinetics and thermal properties of a novel self-promoted fluorene-based bisphthalonitrile monomer
ترجمه فارسی عنوان
سنتز، سینتیک خنثی سازی و خواص حرارتی یک مونومر بیسفالتالونیتریل مبتنی بر فلوئور
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• An amino-containing fluorene bisphthalonitrile monomer (AFPN) was synthesized.
• Isoconversional method was applied to analyze the curing process of AFPN.
• The AFPN showed a self-promoted curing behavior.
• The cured polymer showed an excellent thermal and thermo-oxidative stability.
• The glass transition temperature of this resin is found to exceed 400 °C.

A novel amino-containing fluorene-based bisphthalonitrile monomer, 9,9-bis(4-aminophenyl)-2,7-(3,4-dicyanophenoxy)-fluorene (AFPN), was successfully synthesized via the nucleophilic displacement of the nitro-substituent from 4-nitrophthalonitrile. The structure of AFPN was confirmed by Fourier transform infrared (FT-IR), 1H and 13C nuclear magnetic resonance (NMR). Its curing behavior and curing kinetics were investigated using differential scanning calorimetry (DSC) and FT-IR techniques. Isoconversional method based on Starink was applied to analyze the curing process of AFPN. The thermal and mechanical properties of the cured product were evaluated by thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). The AFPN showed a self-promoted curing behavior, whereas the introduction of the amino groups increased its curing rate and lowered its curing temperature. Additionally, its cured polymer showed an excellent thermal and thermo-oxidative stability, since its char yield reached 76.5% at 800 °C in nitrogen and 83.4% at 600 °C in air, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 602, 20 February 2015, Pages 22–29
نویسندگان
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