کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5022278 | 1469474 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation of the thermoresistive response of multiwall carbon nanotube/polysulfone composites under heating-cooling cycles
ترجمه فارسی عنوان
بررسی تجربی واکنش گرماسوزی کامپوزیت های نانولوله کربنی چند لایه / پلی سولفون تحت چرخه های گرم شدن خنک کننده
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
The thermoresistive behavior of multiwall carbon nanotube (MWCNT)/polysulfone composites is experimentally investigated under heating-cooling cycles. Composites with MWCNT weight concentrations between 0.5 and 50 wt.% were fabricated and their morphology and porosity were examined. Changes in their electrical resistance upon changes in temperature were simultaneously measured under heating-cooling cycles above and below room temperature (25 °C), and under incremental steps of constant temperature. The thermoresistive sensitivity (temperature coefficient of resistance, TCR) and the hysteresis of each heating-cooling cycle were also investigated. Composites with MWCNT concentrations of 25 wt.% and below showed a positive TCR, while negative ones were measured for composites with 40 wt.% and 50 wt.%. The thermoresistive hysteresis was higher for composites with high MWCNT content (40 wt.% and 50 wt.%). Higher TCRs were found for temperatures above room temperature than below, and dominance of the MWCNT inherent thermoresistivity was observed for composites with very high MWCNT content (â¥40 wt.%). Finally, the potential of this material to perform as a thermistor was assessed by comparing its readings to those of a commercial (solid state) sensor, showing very high sensitivity, good reproducibility and fair agreement with the commercial sensor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 151, 20 October 2017, Pages 34-43
Journal: Composites Science and Technology - Volume 151, 20 October 2017, Pages 34-43
نویسندگان
M. Cen-Puc, G. Pool, A.I. Oliva-Avilés, A. May-Pat, F. Avilés,