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低密度聚乙烯无布在化过程中的再结晶通过化电

Yueming Ren^1,2, Changjin Li², Minqiao Ren²

¹College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.

|August 14, 2025

概括

80°C以上的低密度聚乙烯 (LDPE) 非织造布的回火降低了其点,结晶性和拉伸强度. 不同的结晶机制影响微观结构的演变和材料的特性.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
织工程织工程织工程

背景情况:

化电是生产无布的关键技术.
了解低密度聚乙烯 (LDPE) 等聚合物的热行为对于优化材料性能至关重要.

研究的目的:

研究热温度对LDPE无布微观结构和拉伸性能的影响.
阐明在化过程中控制微观结构变化的再结晶机制.

主要方法:

差分扫描热量计 (DSC) 用于热分析.
小角度X射线散射 (SAXS) 用于微观结构的表征.
扫描电子显微镜 (SEM) 用于表面形态.
用于数据分析的高斯函数适配.

主要成果:

80°C以上的回火降低了LDPE的点和结晶度.
无布的拉伸强度和叶片分布受到80°C以上火的负面影响.
确定了二次和自发结晶的两种再结晶机制,它们的优势取决于热温度.

结论:

这项研究提供了一个物理模型,用于微结构进化化LDPE无布.
这些发现解释了观察到的微观结构和拉伸特性变化.
优化回火条件对于量身定制LDPE无布性能至关重要.

关键词:

烧焦的烧焦方法低密度聚乙烯的低密度聚乙烯.无布无布无布无布无布再结晶化,重新结晶化

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