结晶度
材料科学
纳米压痕
纳米-
复合材料
乙烯-醋酸乙烯酯
极限抗拉强度
模数
杨氏模量
醋酸乙烯酯
压痕硬度
弹性模量
宏
聚合物
微观结构
共聚物
计算机科学
程序设计语言
作者
Jae Hyun Kim,Janson Wang,Ho-Jong Kang,Frank E. Talke
摘要
Abstract Nano‐ and macro‐mechanical properties of ethylene vinyl acetate (EVA) with various amounts of vinyl acetate (VA) have been investigated. Nano‐mechanical properties (modulus and hardness) were obtained using nano‐indentation measurements while macro‐mechanical properties were determined using tensile test measurements. A decrease in Young's modulus and hardness was observed with increasing VA content for both nano‐ and macro‐mechanical measurements. An increase in Young's modulus and hardness was observed as a function of the draw ratio keeping the VA content constant. The difference between macro‐ and nano‐mechanical properties as a function of VA content and draw ratio is explained in terms of crystallinity and chain orientation. POLYM. ENG. SCI., 2008. © 2007 Society of Plastics Engineers
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