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首页> 外文期刊>Journal of Applied Polymer Science >Simulation of crystallization kinetics and morphology during nonisothermal crystallization in short fiber reinforced composites
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Simulation of crystallization kinetics and morphology during nonisothermal crystallization in short fiber reinforced composites

机译：短纤维增强复合材料非等温结晶过程中结晶动力学和形态的模拟

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摘要

Computer simulation for the nonisothermal crystallization of short fiber reinforced composites is presented. The pixel coloring technique is implemented to the study of crystal morphology evolution as well as the crystallization kinetics. A parametric study is used to explore the influences of thermal conditions and fibers on the crystallization in the reinforced system. We particularly focus on the roles of cooling rate, initial temperature, nucleation density on fibers, fiber content, fiber length, and fiber diameter. The results indicate that cooling rate is a significant factor to the crystallization kinetics as well as the morphology. The initial temperature only affects the crystallization kinetics and has minor impact on the morphology. The additional fibers have a dual effect on the crystallization. They depress the crystallization rate by hindering the spherulitic growth and accelerate the crystallization rate by providing nucleation sites. The constraining effect is mainly dependent on fiber content, whereas the enhancing effect is mainly determined by fiber surface and fiber nucleation density as well as surface nucleation mode. Present results are hoping to give more insight about the crystallization in short fiber reinforced composites and be more helpful to the industrial application.
机译：提出了短纤维增强复合材料非等温结晶的计算机模拟。像素着色技术用于研究晶体形态演变以及结晶动力学。使用参数研究来研究热条件和纤维对增强系统中结晶的影响。我们特别关注冷却速率，初始温度，纤维上的成核密度，纤维含量，纤维长度和纤维直径的作用。结果表明，冷却速率是影响结晶动力学和形貌的重要因素。初始温度仅影响结晶动力学，而对形态影响很小。附加的纤维对结晶具有双重作用。它们通过阻碍球状生长来降低结晶速率，并通过提供成核位点来加快结晶速率。约束作用主要取决于纤维含量，而增强作用主要取决于纤维表面和纤维成核密度以及表面成核模式。目前的结果希望能为短纤维增强复合材料的结晶提供更多的见识，并为工业应用提供更多帮助。

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