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Curing reaction of unsaturated polyester resin modified by dicyclopentadiene |
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| Authors: | Hsien-Tang Chiu Su-Chen Chen |
| Affiliation: | (1) Department of Chemical Engineering, Shiuping Institute of Technology, No.11, Gungye Rd., Dali City, Taichung, 412, Taiwan, ROC;(2) Graduate School of Fiber and Polymer Engineering, National Taiwan University of Science &Technology, 43, Keelung Road, Sec.4., Taipei, 10672, Taiwan, ROC |
| Abstract: | The objective of this research is to prepare modified unsaturated polyester resin(UPR) with good processibility, dimension stability and mechanical properties. In this study, dicyclopentadiene (DCPD) is selected as a modifier and the effect of DCPD content on the curing behavior of the modified UPR is examined via Differential Scanning Calorimetry (DSC) and Rheometrics Dynamic Analysis (RDA) experiments. The results of 1H NMR identification for the chemical structure of modified UPR show that the trans-structure of UPR decreases as the DCPD content increases. The curing time necessary to reach peak maximum in DSC during the curing reaction lengthens as the stereo obstacles formed by the binary rings increase. |
| Keywords: | Unsaturated polyester resin Dicyclopentadiene (DCPD) Gel time Gel temperature Isomerization rate |
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