A kinetic study on the autocatalytic cure reaction of a cyanate ester resin

doi:10.1002/app.20314

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/44127

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题名:	A kinetic study on the autocatalytic cure reaction of a cyanate ester resin
作者:	Chen, Ching-chung;董崇民;Don, Trong-ming;Lin, Tai-hung;Cheng, Liao-ping
贡献者:	淡江大學化學工程與材料工程學系
日期:	2004-06
上传时间:	2010-03-09 09:54:42 (UTC+8)
出版者:	Wiley-Blackwell
摘要:	The cure of a novolac-type cyanate ester monomer, which reacts to form a polycyanurate network, was investigated by using differential scanning calorimeter. The conversions and the rates of cure were determined from the exothermic curves at several isothermal temperatures (513–553 K). The experimental data, showing an autocatalytic behavior, conforms to the kinetic model proposed by Kamal, which includes two reaction orders, m and n, and two rate constants, k1 and k2. These kinetic parameters for each curing temperature were obtained by using Kenny's graphic-analytical technique. The overall reaction order was about 1.99 (m = 0.99, n = 1.0) and the activation energies for the rate constants, k1 and k2, were 80.9 and 82.3 kJ/mol, respectively. The results show that the autocatalytic model predicted the curing kinetics very well at high curing temperatures. However, at low curing temperatures, deviation from experimental data was observed after gelation occurred. The kinetic model was, therefore, modified to predict the cure kinetics over the whole range of conversion. After modification, the overall reaction order slightly decreased to be 1.94 (m = 0.95, n = 0.99), and the activation energies for the rate constants, k1 and k2, were found to be 86.4 and 80.2 kJ/mol.
關聯:	Journal of applied polymer science 92(5), pp.3067-3079
DOI:	10.1002/app.20314
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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