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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 o C aftr the solvent and phenol, blocking agent, were removed upto the 150 o 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. Key Words : Fluoropolymer, blocked-HMDI, cross-linking, TGA, DSC * Corresponding Author : WonSool AhnTel: +82-53-580-5358 email: wahn@kmu.ac.kr 12 04 18  12 04 27  12 05 10 1.  (Natural Rubber, NR)    (Chloroprene, CR) (Carbon Black, CB)         .   ,     CMB (Carbon Master Barch)         FMB(Final Master Batch) ,       (vulacanization)    .    ,   (Compression Set, CS)              .                     . Table 1    NR CR     [1].

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