کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
674432 | 1459560 | 2011 | 6 صفحه PDF | دانلود رایگان |

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.
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• 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.
Journal: Thermochimica Acta - Volume 524, Issues 1–2, 20 September 2011, Pages 74–79