• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Polymers >Effects of Reorientation of Graphene Platelets (GPLs) on Young’s Modulus of Polymer Nanocomposites under Uni-Axial Stretching
【2h】

Effects of Reorientation of Graphene Platelets (GPLs) on Young’s Modulus of Polymer Nanocomposites under Uni-Axial Stretching

机译：单轴拉伸下石墨烯血小板（GPLs）的取向对聚合物纳米复合材料杨氏模量的影响

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The orientation of reinforcement fillers in composites plays a vital role in their mechanical properties. This paper employs the Mori–Tanaka micromechanics model, incorporating the effect of stretching-induced reorientation of graphene platelets (GPL), to predict Young’s modulus of GPL/polymer nanocomposites. Subjected to uni-axial stretching, dispersion of GPLs is described by an orientation distribution function (ODF) in terms of a stretching strain and two Euler angles. The ODF shows that GPLs tend to realign along the stretching direction. Such realignment is enhanced at a higher Poisson’s ratio and under a larger stretching strain. It is found that the out-of-plane Young’s modulus of GPL nanofillers has a limited effect on the overall Young’s modulus of the composites. With an increase in stretching strain and GPL concentration, Young’s modulus increases in the stretching direction while it decreases in the transverse direction. A larger aspect-ratio of GPLs with fewer layers is preferred for enhancing Young’s modulus in the stretching direction, but it is unfavorable in the transverse direction. Moreover, Young’s moduli in both longitudinal and transverse directions are more sensitive to the reorientation of smaller-sized GPLs with a greater concentration in the composites.
机译：复合材料中增强填料的取向在其机械性能中起着至关重要的作用。本文采用Mori-Tanaka微力学模型，并结合了拉伸诱导的石墨烯血小板（GPL）重新定向的影响，以预测GPL /聚合物纳米复合材料的杨氏模量。经受单轴拉伸，GPL的弥散由拉伸应变和两个欧拉角的定向分布函数（ODF）来描述。 ODF显示GPL倾向于沿着拉伸方向重新排列。在更高的泊松比和更大的拉伸应变下，这种重新排列得到增强。发现GPL纳米填料的面外杨氏模量对复合材料的整体杨氏模量有有限的影响。随着拉伸应变和GPL浓度的增加，杨氏模量在拉伸方向上增大，而在横向方向上减小。层数较少的GPL的长宽比较大，对于增强拉伸方向的杨氏模量是优选的，但在横向方向上则不利。此外，纵向和横向的杨氏模量对复合物中浓度较高的小尺寸GPL的重新定向更为敏感。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号