{"title":"环氧树脂-磁流体-碳纳米管复合材料电性能各向异性程度的测定","authors":"A. E. Postelga, S. V. Igonin","doi":"10.1134/S1061830924603453","DOIUrl":null,"url":null,"abstract":"<p>The electrical properties of a material representing a composite of epoxy resin, magnetic fluid, and carbon nanotubes are investigated. It is shown that in composites dried in the presence of a magnetic field, elongated conductive structures consisting of carbon nanotubes and magnetic fluid are formed. Their presence causes the appearance of anisotropy of the electrical properties of such composites. The anisotropy of the properties is studied by microwave waveguide methods, according to the frequency dependence of the reflection coefficient of microwave radiation from a periodic structure in which the composite under study was used as a damaged layer. It has been found that the electrical properties of the composite depend on the magnitude and direction of the magnetic field induction, as well as on changes in the concentration of components in the composite. Numerical modeling was performed and the importance of taking into account the anisotropy of the electrical properties of the formed structures when calculating the integral parameters of the composite is shown.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":"61 2","pages":"231 - 243"},"PeriodicalIF":0.9000,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Measuring the Degree of Anisotropy of Electrical Properties of Epoxy Resin–Magnetic Fluid–Carbon Nanotube Composite\",\"authors\":\"A. E. Postelga, S. V. Igonin\",\"doi\":\"10.1134/S1061830924603453\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The electrical properties of a material representing a composite of epoxy resin, magnetic fluid, and carbon nanotubes are investigated. It is shown that in composites dried in the presence of a magnetic field, elongated conductive structures consisting of carbon nanotubes and magnetic fluid are formed. Their presence causes the appearance of anisotropy of the electrical properties of such composites. The anisotropy of the properties is studied by microwave waveguide methods, according to the frequency dependence of the reflection coefficient of microwave radiation from a periodic structure in which the composite under study was used as a damaged layer. It has been found that the electrical properties of the composite depend on the magnitude and direction of the magnetic field induction, as well as on changes in the concentration of components in the composite. Numerical modeling was performed and the importance of taking into account the anisotropy of the electrical properties of the formed structures when calculating the integral parameters of the composite is shown.</p>\",\"PeriodicalId\":764,\"journal\":{\"name\":\"Russian Journal of Nondestructive Testing\",\"volume\":\"61 2\",\"pages\":\"231 - 243\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-06-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Journal of Nondestructive Testing\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1061830924603453\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, CHARACTERIZATION & TESTING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Nondestructive Testing","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1061830924603453","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
Measuring the Degree of Anisotropy of Electrical Properties of Epoxy Resin–Magnetic Fluid–Carbon Nanotube Composite
The electrical properties of a material representing a composite of epoxy resin, magnetic fluid, and carbon nanotubes are investigated. It is shown that in composites dried in the presence of a magnetic field, elongated conductive structures consisting of carbon nanotubes and magnetic fluid are formed. Their presence causes the appearance of anisotropy of the electrical properties of such composites. The anisotropy of the properties is studied by microwave waveguide methods, according to the frequency dependence of the reflection coefficient of microwave radiation from a periodic structure in which the composite under study was used as a damaged layer. It has been found that the electrical properties of the composite depend on the magnitude and direction of the magnetic field induction, as well as on changes in the concentration of components in the composite. Numerical modeling was performed and the importance of taking into account the anisotropy of the electrical properties of the formed structures when calculating the integral parameters of the composite is shown.
期刊介绍：
Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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