کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
674432 1459560 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanistic overview of the curing behavior of hydride terminated polydimethylsiloxane with allyl functionalized alumina by calorimetry and rheometry
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Mechanistic overview of the curing behavior of hydride terminated polydimethylsiloxane with allyl functionalized alumina by calorimetry and rheometry
چکیده انگلیسی

The study of the curing behavior of an encapsulation material is very important and critical in terms of understanding the properties of the material. Differential scanning calorimetry and rheometry are two important tools that have been utilized to study curing reactions in polymeric systems. The present work deals with the curing of a mixture of hydride terminated polydimethylsiloxane, allyl functionalized alumina nanoparticles and Karstedt's catalyst. The real time curing behavior of the typical system was monitored non-isothermally by differential scanning calorimetry and rheometry. The results obtained from the respective techniques reveal that there is a good correlation between these two techniques. A mechanism is proposed for the curing reaction of the polymer system based on the curing curves obtained by the above two studies. In addition, the swelling study and contact angle measurement of the two composites was performed to evaluate the extent of cross-linking and hydrophobicity.

Figure optionsDownload as PowerPoint slideHighlights
• Platinum catalyzed hydrosilylation (curing) was studied by DSC and rheometry.
• A good correlation between DSC and rheometry was observed for curing.
• Coupling reaction occurred at lower temperature followed by curing.
• Contact angle measurements showed that the composites were hydrophobic.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 524, Issues 1–2, 20 September 2011, Pages 74–79
نویسندگان
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