کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5206990 | 1382330 | 2010 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved testing system for thermomechanical experiments on polymers using uniaxial compression equipment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
This paper presents an improved testing system for isothermal and thermal-cycling experiments of polymers in compression. Due to the low thermal conductivity of polymers and the high thermal mass of commercially available compression platens, significant problems arise; large differences between the prescribed and polymer temperature, temperature variation through the sample and a slow temperature response are observed. Here, in experiments performed on an acrylic network polymer, the largest temperature difference between the core of the cylindrical compression samples (10 mm diameter/height) and the prescribed air temperature reaches 20.7 °C and 64.8 °C when respective cooling/heating rates of 1 °C/min and 10 °C/min are used. Based on the analysis of the existing system, an improved compression platen design for thermal management that provides a faster temperature response and a more uniform sample temperature distribution is proposed. The peak temperature difference was reduced to 4.5 °C at a cooling/heating rate of 10 °C/min using the improved testing system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 29, Issue 4, June 2010, Pages 503-512
Journal: Polymer Testing - Volume 29, Issue 4, June 2010, Pages 503-512
نویسندگان
Kristofer K. Westbrook, Francisco Castro, Kevin N. Long, Andrew J. Slifka, H. Jerry Qi,