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首页> 外文期刊>Journal of Applied Polymer Science >EFFECTS OF CURE TREATMENT ON GLASS TRANSITION TEMPERATURES FOR A BADGE-DDM EPOXY RESIN
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EFFECTS OF CURE TREATMENT ON GLASS TRANSITION TEMPERATURES FOR A BADGE-DDM EPOXY RESIN

机译：固化处理对Badge-DDM环氧树脂玻璃化转变温度的影响

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摘要

The extent of cure for epoxy resin (BADGE) with a small excess of amine hardener (DDM, 4 w/o) was determined by assay of the epoxy groups using near infrared spectroscopy. The effect of cure time at 100 degrees C and postcure time at 180 degrees C has been investigated. For the lower temperature cures the room temperature density, rho(rt), increased with time, reaching a maximum at X(e) = 0.87, and then decreased with extended cure times. For postcure, there was a monotonic decrease in rho(rt) that was unrelated to the extent of cure. There was an approximate linear relationship between glass transition temperature and ln(t), which increased even when essentially all of the epoxy groups had reacted, that is X(e) similar to 0.99. (C) 1996 John Wiley & Sons, Inc. [References: 39]
机译：通过使用近红外光谱法测定环氧基，可以确定使用少量胺类硬化剂（DDM，4 w / o）的环氧树脂（BADGE）的固化程度。已经研究了100摄氏度下的固化时间和180摄氏度下的后固化时间的影响。对于较低温度的固化，室温密度rho（rt）随时间增加，在X（e）= 0.87时达到最大值，然后随着延长的固化时间而降低。对于后固化，rho（rt）的单调下降与治愈程度无关。玻璃化转变温度与ln（t）之间存在近似线性关系，即使基本上所有环氧基都已反应，该线性关系也会增加，即X（e）类似于0.99。 （C）1996 John Wiley＆Sons，Inc. [参考：39]

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