Yun Chen, Boxue Du, Rundong Xue, Yunqi Xing and Xiaoxiao Kong*,
{"title":"利用多聚多巴胺进行表面改性以改善用于绝缘棒的芳纶纤维/环氧树脂复合材料的介电性能","authors":"Yun Chen, Boxue Du, Rundong Xue, Yunqi Xing and Xiaoxiao Kong*, ","doi":"10.1021/acsapm.4c00914","DOIUrl":null,"url":null,"abstract":"<p >The poor interfacial adhesion between aramid fiber and epoxy resin is the main issue affecting the dielectric properties of the aramid fiber-reinforced composite (AFRC). In this paper, the bioinspired polydopamine (PDA) coating method is used to modify the aramid fiber surface, which is already activated by plasma treatment. Various aramid fiber/epoxy composite samples are prepared, and the effects of the PDA concentration on the dielectric properties are studied. It is indicated that the interfacial bonding strength between the fiber and epoxy resin could be improved, thus contributing to higher mechanical strength and enhanced dielectric properties. Results show that the DC conductivity, dielectric constant and integration charge <i>Q</i>(<i>t</i>) of the modified composites are significantly reduced, while the dielectric breakdown strength is increased. Under an optimized dopamine concentration of 2 g/L, the breakdown strength is enhanced by 25.1%, while the charge accumulation rate is decreased by 46.5%. Meanwhile, the interfacial shear strength of the composite is increased from 29.5 to 65.2 MPa, showing great application potential in high voltage power equipment.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Polydopamine-Enabled Surface Modification to Improve the Dielectric Property of Aramid Fiber/Epoxy Composites for Insulation Rod\",\"authors\":\"Yun Chen, Boxue Du, Rundong Xue, Yunqi Xing and Xiaoxiao Kong*, \",\"doi\":\"10.1021/acsapm.4c00914\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The poor interfacial adhesion between aramid fiber and epoxy resin is the main issue affecting the dielectric properties of the aramid fiber-reinforced composite (AFRC). In this paper, the bioinspired polydopamine (PDA) coating method is used to modify the aramid fiber surface, which is already activated by plasma treatment. Various aramid fiber/epoxy composite samples are prepared, and the effects of the PDA concentration on the dielectric properties are studied. It is indicated that the interfacial bonding strength between the fiber and epoxy resin could be improved, thus contributing to higher mechanical strength and enhanced dielectric properties. Results show that the DC conductivity, dielectric constant and integration charge <i>Q</i>(<i>t</i>) of the modified composites are significantly reduced, while the dielectric breakdown strength is increased. Under an optimized dopamine concentration of 2 g/L, the breakdown strength is enhanced by 25.1%, while the charge accumulation rate is decreased by 46.5%. Meanwhile, the interfacial shear strength of the composite is increased from 29.5 to 65.2 MPa, showing great application potential in high voltage power equipment.</p>\",\"PeriodicalId\":7,\"journal\":{\"name\":\"ACS Applied Polymer Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2024-06-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Polymer Materials\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsapm.4c00914\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Polymer Materials","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsapm.4c00914","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Polydopamine-Enabled Surface Modification to Improve the Dielectric Property of Aramid Fiber/Epoxy Composites for Insulation Rod
The poor interfacial adhesion between aramid fiber and epoxy resin is the main issue affecting the dielectric properties of the aramid fiber-reinforced composite (AFRC). In this paper, the bioinspired polydopamine (PDA) coating method is used to modify the aramid fiber surface, which is already activated by plasma treatment. Various aramid fiber/epoxy composite samples are prepared, and the effects of the PDA concentration on the dielectric properties are studied. It is indicated that the interfacial bonding strength between the fiber and epoxy resin could be improved, thus contributing to higher mechanical strength and enhanced dielectric properties. Results show that the DC conductivity, dielectric constant and integration charge Q(t) of the modified composites are significantly reduced, while the dielectric breakdown strength is increased. Under an optimized dopamine concentration of 2 g/L, the breakdown strength is enhanced by 25.1%, while the charge accumulation rate is decreased by 46.5%. Meanwhile, the interfacial shear strength of the composite is increased from 29.5 to 65.2 MPa, showing great application potential in high voltage power equipment.
期刊介绍:
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.