کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10411033 | 894540 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of temperature and vapor pressure on the gas sensing behavior of carbon black filled polyurethane composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The authors of the present work developed conductive composite materials comprised of carbon black and waterborne polyurethane by latex blending. Unlike conventional polymer composites that only respond to certain specific group of solvent vapors, the present composites exhibit electrical resistance responses to a series of vapors of polar and non-polar solvents as a result of the block molecular structure of polyurethane. Under a given vapor pressure, the response rate increases with increasing temperature, but the maximum magnitude of response of the composites decreases because of the effect of vapor desorption. In the case of a constant temperature, the maximum responsivity of the composites increases with a rise in vapor pressure and the relationship follows linear regression within the p/po range of 10â4 to 2 Ã 10â2. Besides, the slopes of the linear dependences vary when the vapor species is changed, suggesting the possibility of quantifying and distinguishing vapors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 105, Issue 2, 28 March 2005, Pages 187-193
Journal: Sensors and Actuators B: Chemical - Volume 105, Issue 2, 28 March 2005, Pages 187-193
نویسندگان
Shi Guo Chen, Ji Wen Hu, Ming Qiu Zhang, Min Zhi Rong,