کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7106097 | 1460487 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of scratch resistance of functionalized graphene oxide/polysiloxane nanocomposite coatings
ترجمه فارسی عنوان
بررسی مقاومت خراش پوشش های نانوکامپوزیت گرافن کاربامرده اکسید / پلی سیلوکسان
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کلمات کلیدی
اکسید گرافن کارکردی پوشش پلی سیلوکسان، نانوکامپوزیت، مقاومت در برابر خراش
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Functionalized graphene oxide (FGO) was synthesized with 3-glycidoxy-propyl trimethoxy silane (GPTMS) and subsequently incorporated into polysiloxane coatings to improve the mechanical properties, especially scratch resistance, through the sol-gel and epoxy/amino curing reactions. The surface functionalization of graphene oxide (GO) was evidenced by TEM, FTIR and XPS. FGO was found to have better compatibility and establish stronger interface with polysiloxane matrix than GO based on the observed microstructures using OM and SEM. Nanoindentation, macro scratch and progressive load scratch tests were employed to assess the mechanical performance of FGO/polysiloxane nanocomposite coatings, demonstrating significant improvement in comparison with either the pure polysiloxane or the GO/polysiloxane coatings. A 40% enhancement on microhardness (233â¯MPa), 83% improvement of scratch resistance (1100â¯g) and 144% increase in 1st scratch critical normal load (4.88N) are achieved by addition of only 0.75â¯wt% of FGO. Furthermore, elastic recovery and scratch damage morphology were investigated to provide insight into scratch behavior and reinforcement mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 117, April 2018, Pages 118-129
Journal: Progress in Organic Coatings - Volume 117, April 2018, Pages 118-129
نویسندگان
Hang Hu, Shuyan Zhao, Gang Sun, Yongjian Zhong, Bo You,