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Interdependence Between the Curing,Structure,and the Mechanical Properties of Phenolic Resins

机译:酚醛树脂的固化,结构与力学性能之间的相互依赖性

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摘要

The interdependence between the curing conditions,structure,and the mechanical properties of tow neat phenolic resin systems was investigated.Changes of the distribution of the void diameters were characterized by light-and scanning electron microscope analyses.Tensile tests and dynamic mechanical thermo analysis were performed to determine the influence of the hardener concentration and the curing temperature on the mechanical and the thermomechanical propertis.The study reveals that the hardener concentration predominately influenced the microscopic structure,and thus the mechanical properties of the phenolic resin systems.By varying the postcuring times,it can be shown that independent from the microstructure of the phenolic resin system,the degree of cure has a strong influence on the mechanical properties.
机译:研究了两种纯酚醛树脂体系的固化条件,结构和力学性能之间的相互关系。通过光镜和扫描电镜分析表征了空隙直径分布的变化。进行了拉伸试验和动态力学热分析该研究表明,固化剂浓度主要影响酚醛树脂体系的微观结构,进而影响其力学性能。通过改变后固化时间,可以确定固化剂浓度和固化温度对机械性能和热机械性能的影响。可以看出,固化程度与酚醛树脂体系的微观结构无关,对机械性能有很大影响。

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