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http://dx.doi.org/10.5762/KAIS.2012.13.5.2408

Catalyst Effects on Cross-linking of a Multi-Functional Fluoropolymer/Blocked-HMDI Blends  

Ahn, Won-Sool (Department of Chemical Engineering, Keimyung University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.13, no.5, 2012 , pp. 2408-2413 More about this Journal
Abstract
Effects of stanous catalyst on the cross-linking reaction characteristics of multi-functional fluoropolymer with blocked-hexamethylene diisocyanate(HMDI) were studied by dynamic DSC and non-isothermal thermogravimetric analysis (TGA). Results showed that cross-linking reaction occurred around $230-250^{\circ}C$ aftr the solvent and phenol, blocking agent, were removed upto the $150^{\circ}C$. It was considered that the reaction mechanism of the multi-functional fluoropolymer with HMDI might not be changed by the catalyst, however, the reaction rate became extremely faster upto to 100 times, showing the change of activation energy 81.8 kJ/mol for non-catalytic system to 61.7 kJ/mol for 1 phr catalytic system.
Keywords
Fluoropolymer; blocked-HMDI; cross-linking; TGA; DSC;
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