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FeO/BaTiO/环氧树脂杂化纳米复合材料的多任务性能

Multitasking Performance of FeO/BaTiO/Epoxy Resin Hybrid Nanocomposites.

作者信息

Gioti Sevasti, Sanida Aikaterini, Mathioudakis Georgios N, Patsidis Anastasios C, Speliotis Thanassis, Psarras Georgios C

机构信息

Smart Materials & Nanodielectrics Laboratory, Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, Greece.

Institute of Chemical Engineering Sciences (ICE-HT), Foundation for Research & Technology-Hellas (FORTH), Stadiou Str., Platani, P.O. Box 1414, 26504 Patras, Greece.

出版信息

Materials (Basel). 2022 Feb 26;15(5):1784. doi: 10.3390/ma15051784.

DOI:10.3390/ma15051784
PMID:35269016
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8911469/
Abstract

In this study, hybrid nanocomposites consisting of FeO/BaTiO/epoxy resin were prepared with varying amounts of filer content. Structural and morphological characterization, conducted via X-Ray Diffraction patterns and Scanning Electron Microscopy images, revealed the successful fabrication of composites and fine dispersion of inclusions. Thermomechanical properties are studied via Differential Scanning Calorimetry, Thermogravimetric Analysis, Dynamic Mechanical Analysis and static mechanical tests. Hybrid composites exhibit enhanced thermal stability and improved mechanical response. Indicatively, Young's modulus, tensile strength and fracture toughness increase from 1.26 GPa, 22.25 MPa, and 3.03 kJ/m for the neat epoxy to 1.39 GPa, 45.73 MPa, and 41.08 kJ/m for the composites with 20 or 15 parts per hundred resin per mass (phr) of FeO, respectively. Electrical behavior is investigated via Broadband Dielectric Spectroscopy and ac conductivity measurements. The real part of dielectric permittivity reaches the value of 11.11 at 30 °C for the composite with 40 phr of FeO. The ability to store and retrieve electric energy on the nanocomposites is examined with the following parameters: the filler content and the applied voltage under dc conditions. Retrieved energy reaches 79.23% of the stored one, for the system with 15 phr of FeO. Magnetic response is studied via a Vibrating Sample Magnetometer. Magnetic saturation, for the system with the highest magnetic filler content, obtains the value of 25.38 Am/kg, while pure magnetic powder attains the value of 86.75 Am/kg. Finally, the multifunctional performance of the nanocomposites is assessed regarding all the exerted stimuli and the optimum behavior is discussed.

摘要

在本研究中，制备了由FeO/BaTiO/环氧树脂组成的杂化纳米复合材料，其填料含量各不相同。通过X射线衍射图谱和扫描电子显微镜图像进行的结构和形态表征表明，复合材料制备成功且夹杂物分散良好。通过差示扫描量热法、热重分析、动态力学分析和静态力学试验研究了热机械性能。杂化复合材料表现出增强的热稳定性和改善的力学响应。具体而言，对于纯环氧树脂，杨氏模量、拉伸强度和断裂韧性分别为1.26 GPa、22.25 MPa和3.03 kJ/m²；对于每100质量份树脂中含有20或15份FeO的复合材料，杨氏模量、拉伸强度和断裂韧性分别提高到1.39 GPa、45.73 MPa和41.08 kJ/m²。通过宽带介电谱和交流电导率测量研究了电学行为。对于含有40份FeO每100质量份树脂（phr）的复合材料，在30°C时介电常数的实部达到11.11。通过以下参数研究了纳米复合材料存储和回收电能的能力：填料含量和直流条件下施加的电压。对于含有15 phr FeO的体系，回收能量达到存储能量的79.23%。通过振动样品磁强计研究了磁响应。对于磁性填料含量最高 的体系，磁饱和值为25.38 Am/kg，而纯磁粉的磁饱和值为86.75 Am/kg。最后，评估了纳米复合材料在所有施加刺激下的多功能性能，并讨论了最佳性能表现。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39b1/8911469/68abe5420140/materials-15-01784-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39b1/8911469/efa7aa077abd/materials-15-01784-g006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39b1/8911469/1185e79ef3f8/materials-15-01784-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39b1/8911469/68abe5420140/materials-15-01784-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39b1/8911469/a708bfc70749/materials-15-01784-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39b1/8911469/9ca7ee4bb141/materials-15-01784-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39b1/8911469/68abe5420140/materials-15-01784-g010.jpg

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