Cure Kinetics and Thermal Property of UV-Curable Polyester Nanocomposites Coating Modified with MAP-POSS

Abstract:

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The UV-curable unsaturated polyester (UPR) was modified with glycidyl methacrylate and methylacryloylpropyl polyhedral oligomeric silsesquioxanes (MAP-POSS), and the cure kinetics of MAP-POSS/UPR system was investigated by non-isothermal DSC. The result shows that UPR, glycidyl methacrylate and MAP-POSS have very good compatibility and can co-cure in free radical polymerization.The curing reaction can be described by a two-parameter autocatalytic Šesták-Berggren (S-B) model. The average reaction activation energy Ea for 6% and 9% MAP-POSS content is 73 kJ/mol and is lower than 0% ( about 82kJ/mol). The mechanical loss peak temperature Tp of curing nanocomposites increase with increasing MAP-POSS content and has a highest value when MAP-POSS content is 9%, which is 114.1 oC and higher about 12 oC than pure UPR.

Info:

Periodical:

Advanced Materials Research (Volumes 150-151)

Edited by:

Jinglong Bu, Zhengyi Jiang and Sihai Jiao

Pages:

821-824

DOI:

10.4028/www.scientific.net/AMR.150-151.821

Citation:

J. G. Gao et al., "Cure Kinetics and Thermal Property of UV-Curable Polyester Nanocomposites Coating Modified with MAP-POSS", Advanced Materials Research, Vols. 150-151, pp. 821-824, 2011

Online since:

October 2010

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$35.00

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