کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5439644 | 1509875 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultralight graphene aerogel enhanced with transformed micro-structure led by polypyrrole nano-rods and its improved microwave absorption properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ultralight graphene aerogel enhanced with transformed micro-structure led by polypyrrole nano-rods and its improved microwave absorption properties Ultralight graphene aerogel enhanced with transformed micro-structure led by polypyrrole nano-rods and its improved microwave absorption properties](/preview/png/5439644.png)
چکیده انگلیسی
By a simple one-step reduction self-assembly process, a three-dimensional composite material graphene/polypyrrole aerogel (GPA) has been fabricated. The polypyrrole nanorods (PNRs) not only act as a spacer to avoid the graphene sheets aggregation and enhance mechanical strength but also effectively adjust the permittivity of GPAs to gain expected microwave absorption (MA) performance. Compared with pure graphene aerogel (GA), these aerogels with the ultralow density of around 0.020Â g/cm3 show improved MA performance that the maximum reflection loss (RL) can reach â51.12Â dB at the frequency of 6.4Â GHz, and the effective absorption bandwidth (RLÂ <Â â10Â dB) was 5.88Â GHz (10.48-16.36Â GHz) corresponding to an absorber thickness of 3.0Â mm. Such outstanding MA performances are attributed to the polarization and relaxation process that is correlated with the transformed microstructure of GPAs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 97, June 2017, Pages 141-150
Journal: Composites Part A: Applied Science and Manufacturing - Volume 97, June 2017, Pages 141-150
نویسندگان
Bin Liu, Jinhuan Li, Lufang Wang, Jiahui Ren, Yanfang Xu,