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首页> 外文期刊>Journal of Applied Polymer Science >Using PA11 and 12 as curing agents for epoxy networks: Influence of reactivity on miscibility and properties
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Using PA11 and 12 as curing agents for epoxy networks: Influence of reactivity on miscibility and properties

机译：使用PA11和12作为环氧网络的固化剂：反应性对混溶性和性能的影响

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摘要

The Rilsan PA11 prepolymer was evaluated as a curing agent of a diepoxy prepolymer (DGEBA). The miscibility, the glass transition temperature, and the melting of the blend were studied as a function of time at 200 degrees C. A gelation phenomenon was evidenced by dynamic mechanical analysis and the gel time was determined at 200 degrees C. The participation of amide groups to the reaction process at this temperature was confirmed by the study of the PA12 Orgasol(R)/DGEBA system and a reaction mechanism was elucidated by the study of a model system composed of ethylacetamide/phenyl glycidyl ether. The mechanical properties of DGEBA/Rilsan networks cured 7 h at 200 degrees C were evaluated and indicate very high Young's modulus and critical stress intensity factor. (C) 2000 John Wiley & Sons, Inc. [References: 17]
机译：评价了Rilsan PA11预聚物作为二环氧预聚物（DGEBA）的固化剂。研究了共混物的混溶性，玻璃化转变温度和熔融度随时间在200摄氏度下的变化。通过动态力学分析证实了凝胶现象，并在200摄氏度下确定了凝胶时间。酰胺的参与通过PA12 Orgasol？/ DGEBA系统的研究证实了在此温度下反应基团的存在，并且通过研究由乙乙酰胺/苯基缩水甘油醚组成的模型系统阐明了反应机理。对DGEBA / Rilsan网络在200摄氏度固化7小时的机械性能进行了评估，并显示出很高的杨氏模量和临界应力强度因子。 （C）2000 John Wiley＆Sons，Inc. [参考：17]

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