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用于汽车和航空结构应用的石墨烯纳米片增强环氧再生橡胶基复合材料的断裂韧性分析

Fracture Toughness Analysis of Epoxy-Recycled Rubber-Based Composite Reinforced with Graphene Nanoplatelets for Structural Applications in Automotive and Aeronautics.

作者信息

Irez Alaeddin Burak, Bayraktar Emin, Miskioglu Ibrahim

机构信息

LMT-Laboratoire de Mécanique et Technologie, Université Paris-Saclay, ENS Paris-Saclay, CNRS, 94235 Cachan, France.

School of Mechanical and Manufacturing Engineering, SUPMECA-Paris, 93400 Saint Ouen, France.

出版信息

Polymers (Basel). 2020 Feb 14;12(2):448. doi: 10.3390/polym12020448.

DOI:10.3390/polym12020448
PMID:32074973
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7077629/
Abstract

This study proposes a new design of lightweight and cost-efficient composite materials for the aeronautic industry utilizing recycled fresh scrap rubber, epoxy resin, and graphene nanoplatelets (GnPs). After manufacturing the composites, their bending strength and fracture characteristics were investigated by three-point bending (3PB) tests. Halpin-Tsai homogenization adapted to composites containing GnPs was used to estimate the moduli of the composites, and satisfactory agreement with the 3PB test results was observed. In addition, 3PB tests were simulated by finite element method incorporating the Halpin-Tsai homogenization, and the resulting stress-strain curves were compared with the experimental results. Mechanical test results showed that the reinforcement with GnPs generally increased the modulus of elasticity as well as the fracture toughness of these novel composites. Toughening mechanisms were evaluated by SEM fractography. The typical toughening mechanisms observed were crack deflection and cavity formation. Considering the advantageous effects of GnPs on these novel composites and cost efficiency gained by the use of recycled rubber, these composites have the potential to be used to manufacture various components in the automotive and aeronautic industries as well as smart building materials in civil engineering applications.

摘要

本研究提出了一种利用回收的新鲜废橡胶、环氧树脂和石墨烯纳米片（GnPs）为航空工业设计的新型轻质且经济高效的复合材料。制造复合材料后，通过三点弯曲（3PB）试验研究了它们的弯曲强度和断裂特性。采用适用于含GnPs复合材料的Halpin-Tsai均匀化方法来估算复合材料的模量，并观察到与3PB试验结果具有良好的一致性。此外，通过结合Halpin-Tsai均匀化的有限元方法模拟了3PB试验，并将所得应力-应变曲线与实验结果进行了比较。力学试验结果表明，用GnPs增强通常会提高这些新型复合材料的弹性模量以及断裂韧性。通过扫描电子显微镜断口分析评估了增韧机制。观察到的典型增韧机制是裂纹偏转和空洞形成。考虑到GnPs对这些新型复合材料的有利影响以及使用回收橡胶所获得的成本效益，这些复合材料有潜力用于制造汽车和航空工业中的各种部件以及土木工程应用中的智能建筑材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/d1314d79a2cc/polymers-12-00448-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/3ebc425bd9f4/polymers-12-00448-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/34caf4ee71ed/polymers-12-00448-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/e0f1667cf97f/polymers-12-00448-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/291e3f5e9bad/polymers-12-00448-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/bdc63873251e/polymers-12-00448-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/ff138178c4b7/polymers-12-00448-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/e51514abc99d/polymers-12-00448-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/a357bce9dab2/polymers-12-00448-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/93185b6a524c/polymers-12-00448-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/d1314d79a2cc/polymers-12-00448-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/3ebc425bd9f4/polymers-12-00448-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/34caf4ee71ed/polymers-12-00448-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/e0f1667cf97f/polymers-12-00448-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/291e3f5e9bad/polymers-12-00448-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/bdc63873251e/polymers-12-00448-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/ff138178c4b7/polymers-12-00448-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/e51514abc99d/polymers-12-00448-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/a357bce9dab2/polymers-12-00448-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/93185b6a524c/polymers-12-00448-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3718/7077629/d1314d79a2cc/polymers-12-00448-g010.jpg

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