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首页> 外文期刊>Journal of Applied Polymer Science >Curing behavior and network formation of cyanate ester resin/polyethylene glycol
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Curing behavior and network formation of cyanate ester resin/polyethylene glycol

机译：氰酸酯树脂/聚乙二醇的固化行为和网络形成

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摘要

The mechanism and kinetics of the curing reaction of cyanate ester (CE) resin modified with polyethylene glycol were investigated by means of differential scanning calorimetry (DSC) and Fourier-transform infrared spectroscopy (FTIR). The relationship of heat flow versus conversion rate was used to evaluate the effects of polyethylene glycol (PEG) on the curing reaction of CE. DSC results showed that the addition of PEG decreased the curing temperature of CE effectively when its content was less than 20 wt %. The curing behavior of CE/PEG still complies with the self-catalytic kinetic model proposed by Kamal. The effects of PEG content on the kinetics parameters and conversion rate of the curing reaction were discussed. FTIR results indicated that the OH groups in PEG participated in the polymeric reaction of CE and formed OC (=NH) O structure through block copolymerization, which extended the chain length between triazine rings and reduced the density of triazine rings. (C) 2014 Wiley Periodicals, Inc.
机译：通过差示扫描量热法（DSC）和傅里叶变换红外光谱（FTIR）研究了聚乙二醇改性的氰酸酯（CE）树脂固化反应的机理和动力学。使用热流与转化率之间的关系来评估聚乙二醇（PEG）对CE固化反应的影响。 DSC结果表明，当其含量小于20wt％时，PEG的加入有效降低了CE的固化温度。 CE / PEG的固化行为仍符合Kamal提出的自催化动力学模型。讨论了PEG含量对固化反应动力学参数和转化率的影响。 FTIR结果表明PEG中的OH基团参与CE的聚合反应，并通过嵌段共聚形成OC（= NH）O结构，从而延长了三嗪环之间的链长，降低了三嗪环的密度。 （C）2014威利期刊公司

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