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Iranian Journal of Materials Science and Engineering، جلد ۱۸، شماره ۲، صفحات ۰-۰
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عنوان انگلیسی Rheological Comparison of Silicone Rubber Crosslinking with Platinum Catalysts and Triethylamine, Methanol & Ethanolamine Solvents
چکیده انگلیسی مقاله The control of silicone rubber's viscoelastic properties namely loss factor, storage and loss moduli during crosslinking are crucial as its malleable behaviour changes differently under different conditions and affecting the final product. Hence, it becomes the objective of this study to investigate the rheological behaviour of silicone rubber cured under different formulation ratios with platinum catalysts and triethylamine, methanol & ethanolamine solvent. Measurement was conducted for the silicone rubber to crosslinker ratios of 2.5:7.5, 5:5, 7.5:2.5 and 10:1 at different elevated temperatures, and for the silicone rubber with triethylamine, methanol and ethanolamine at different angular frequencies. While the crossover of storage and modulus curve which signifies a gel point was not observed at higher ratios of platinum used across the temperature range of 25 – 100°C, it was found at 89°C and 95°C with the formulation ratios of 10:1 and 7.5:2.5, respectively. On the other hand, the crossover point was observed for silicone rubber at 100 s-1 for triethylamine, 3 s-1 and 100 s-1 for methanol, and 70 s-1 alongside 290 s-1 for ethanolamine. The presence of gel point indicates that crosslinking of silicone rubber successfully took place and this study proves that controlling the crosslinking behaviour was possible.
کلیدواژه‌های انگلیسی مقاله silicone rubber,storage modulus,loss modulus,crosslink,glass transition temperature,rheological measurement
نویسندگان مقاله | Rahida Wati Sharudin
1School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia


| Nik Salwani Md Azmi
1School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia


| Muhammad Shafiq Mat Shayuti
1School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia


| Masahiro Ohshima
2Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-3341-1&slc_lang=en&sid=1
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زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه مکانیکی و شکل دادن
نوع مقاله منتشر شده Research Paper
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