کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5439406 | 1509871 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Graphene for flame-retarding elastomeric composite foams having strong interface
ترجمه فارسی عنوان
گرافن برای فوم کامپوزیت الاستومری مقاوم در برابر شعله دارای رابط قوی است
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کلمات کلیدی
گرافن، کامپوزیت پلی وینیل الکل، فوم
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
It is a great challenge to make elastomeric polymer foams antistatic, flame-retardant and mechanically robust. The challenge was addressed herein by in situ polymerizing polyvinyl alcohol, formaldehyde and graphene sheets. The graphene sheets - each in average being â¼5Â nm thick - had a carbon to oxygen atomic ratio of 9.8 and a Raman ID/IG of 0.03. The sheets proved to react with formaldehyde building up a strong interface for the composites, and the reaction promoted the exfoliation and dispersion of graphene sheets in the matrix. They were found to create a large number of fine pores to the composites. Graphene sheets at 0.12Â vol% increased the foam water retention rate from 346% to 784%. These composites had a percolation threshold of electrical conductivity at 0.023Â vol%. The composites reached a limiting oxygen index of 59.4, implying an exceptional self-extinguishing performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 101, October 2017, Pages 254-264
Journal: Composites Part A: Applied Science and Manufacturing - Volume 101, October 2017, Pages 254-264
نویسندگان
Sherif Araby, Jihui Li, Ge Shi, Zheng Ma, Jun Ma,