Thermal, mechanical and dielectric properties of glass fiber reinforced epoxy-lanthanum manganite nanocomposites

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-18 DOI:10.1515/ipp-2022-0009

Preseetha Paul Chiriyankandath, S. Varghese

引用次数: 0

Abstract

Abstract The mechanical, thermal and dielectric properties of lanthanum manganite (LaMnO3) epoxy nanocomposites reinforced with silane coated E-glass fiber are reported. Structural and morphological characteristics of the LaMnO3, synthesized by the solution combustion method, were studied via X-ray diffraction, EDAX and scanning electron microscopy. LaMnO3/epoxy composites containing various percentages of LaMnO3 (LME) were prepared via hand lay-up method and tested for tensile, flexural and impact strength. Improved properties were obtained with the addition of LME compared to plain epoxy composites. The thermal stability of the composites remains almost unaltered by the filler loading. Variation in the dielectric characteristics with filler loading is attributed to the percolation of charge carriers due to the interfacial zonal overlapping in the nanocomposite resulting in a change of the dielectric characteristics.

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玻璃纤维增强环氧-锰酸镧纳米复合材料的热、力学和介电性能

摘要研究了硅烷包覆e -玻璃纤维增强锰酸镧(LaMnO3)环氧纳米复合材料的力学、热学和介电性能。通过x射线衍射、电子能谱和扫描电镜对溶液燃烧法合成的LaMnO3的结构和形态特征进行了研究。采用手铺法制备了不同LaMnO3 (LME)含量的LaMnO3/环氧复合材料，并对其拉伸、弯曲和冲击强度进行了测试。与普通环氧复合材料相比，LME的加入改善了材料的性能。复合材料的热稳定性几乎不受填料载荷的影响。随着填料的加载，介电特性的变化是由于纳米复合材料中界面区带重叠导致电荷载流子的渗透导致介电特性的变化。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.