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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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不同温度下尼龙6性能和结构变化的原位研究
DOI: 10.11777/j.issn1000-3304.2015.15060, PP. 1175-1179
Keywords: 尼龙6,不同温度下的应力-应变曲线,结构转变,原位广角衍射
Abstract:
利用拉伸热台对尼龙6在不同温度下的拉伸性能进行了测试和分析.随着拉伸温度的升高,尼龙6样品的屈服强度和杨氏模量逐渐下降.采用了一个阿伦尼乌斯模型来描述尼龙6屈服强度与拉伸温度之间的关系,并描述了尼龙6样品黏度、玻璃化温度对屈服强度的影响.通过原位同步辐射广角衍射分析,我们发现未拉伸的尼龙6样品中的α相与γ相的相对比率随温度升高而下降.在拉伸条件下,随着拉伸温度的升高,样品的结晶部分容易产生滑移或晶区的熔融,有序程度下降,因而样品承载外力的能力下降,体现为屈服强度和杨氏模量的下降.
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