Dielectric Properties of Thermally Aged Polypropylene Nanocomposites

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2022-03-31 DOI:10.1109/TDEI.2022.3163796

A. Azmi;K. Y. Lau;N. A. Ahmad;Z. Abdul-Malek;C. W. Tan;K. Y. Ching;A. S. Vaughan

{"title":"Dielectric Properties of Thermally Aged Polypropylene Nanocomposites","authors":"A. Azmi;K. Y. Lau;N. A. Ahmad;Z. Abdul-Malek;C. W. Tan;K. Y. Ching;A. S. Vaughan","doi":"10.1109/TDEI.2022.3163796","DOIUrl":null,"url":null,"abstract":"This article reports on an investigation into the effects of thermal aging on the structure and dielectric properties of polypropylene (PP) nanocomposites. Magnesium aluminate (MgAl\n2\nO\n4\n), calcium carbonate (CaCO\n3\n), and surface-modified calcium carbonate (CaCO\n3\nT) nanofillers have been added to PP and the resulting nanocomposites have been subjected to aging at 110 °C and 140 °C. The results show that unfilled PP experiences a 13% reduction in its dc breakdown strength after aging at 110 °C and that its dc breakdown strength reduces by 27% after aging at 140 °C. In contrast, the reduction in the dc breakdown strength of all investigated PP nanocomposites is much less pronounced than that of the unfilled PP after aging. Specifically, the dc breakdown strength of PP/MgAl\n2\nO\n4\n nanocomposites, PP/CaCO\n3\n nanocomposites, and PP/CaCO\n3\nT nanocomposites reduces by 8%, 14%, and 14%, respectively, after aging at 140 °C. Possible mechanisms affecting the dc breakdown strength of the unfilled PP and PP nanocomposites before and after aging are consequently discussed.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":null,"pages":null},"PeriodicalIF":4.6000,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Bio Materials","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/9745522/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, BIOMATERIALS","Score":null,"Total":0}

引用次数: 2

Abstract

This article reports on an investigation into the effects of thermal aging on the structure and dielectric properties of polypropylene (PP) nanocomposites. Magnesium aluminate (MgAl ₂ O ₄ ), calcium carbonate (CaCO ₃ ), and surface-modified calcium carbonate (CaCO ₃ T) nanofillers have been added to PP and the resulting nanocomposites have been subjected to aging at 110 °C and 140 °C. The results show that unfilled PP experiences a 13% reduction in its dc breakdown strength after aging at 110 °C and that its dc breakdown strength reduces by 27% after aging at 140 °C. In contrast, the reduction in the dc breakdown strength of all investigated PP nanocomposites is much less pronounced than that of the unfilled PP after aging. Specifically, the dc breakdown strength of PP/MgAl ₂ O ₄ nanocomposites, PP/CaCO ₃ nanocomposites, and PP/CaCO ₃ T nanocomposites reduces by 8%, 14%, and 14%, respectively, after aging at 140 °C. Possible mechanisms affecting the dc breakdown strength of the unfilled PP and PP nanocomposites before and after aging are consequently discussed.

查看原文本刊更多论文

热老化聚丙烯纳米复合材料的介电性能

研究了热老化对聚丙烯(PP)纳米复合材料结构和介电性能的影响。将铝酸镁(MgAl2O4)、碳酸钙(CaCO3)和表面改性碳酸钙(CaCO3T)纳米填料添加到PP中，并对所得纳米复合材料进行110℃和140℃的时效处理。结果表明，未填充PP在110℃时效后，其直流击穿强度降低13%，在140℃时效后，其直流击穿强度降低27%。相比之下，所有研究的PP纳米复合材料在老化后直流击穿强度的下降都远不如未填充的PP明显。具体来说，PP/MgAl2O4纳米复合材料、PP/CaCO3纳米复合材料和PP/CaCO3T纳米复合材料在140℃时效后，直流击穿强度分别下降了8%、14%和14%。讨论了老化前后影响未填充PP和PP纳米复合材料直流击穿强度的可能机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464