{"title":"具有更好热稳定性和绝缘性能的聚酰亚胺改性纤维素绝缘纸","authors":"Wenchang Wei;Yiyi Zhang;Haiqiang Chen;Chuqi Xu;Shuangxi Nie;Junwei Zha","doi":"10.1109/TDEI.2024.3414376","DOIUrl":null,"url":null,"abstract":"As the voltage level continues to rise, an imperative demand arises for novel insulating papers characterized by superior electrical insulation strength and heightened thermal stability, to align with the transformative advancements in high-voltage power transformers. Nevertheless, conventional approaches relying on “trial-and-error” approaches encounter significant challenges in expeditiously developing alternative materials. Therefore, the mechanical, thermal stability and dielectric attributes of polyimide (PI)/cellulose insulating paper have been predicted through molecular dynamics (MD) simulations. Subsequently, insulating papers of the composite variety, featuring varying PI fiber content, have been fabricated and subjected to comprehensive investigations of their thermal stability and electrical characteristics. In comparison to pure cellulose insulating paper, the 6% PI/cellulose composite proves (P6) to be the most representative, exhibiting a notable 26.24% increase in tensile strength, a rise in glass transition temperature from 113.4 to 124.7 K, a reduction in permittivity from 4.22 to 3.25, a substantial 58.33% decrease in dielectric loss, and a 30.35% enhancement in breakdown strength. This study unequivocally confirms the efficacy of MD simulations in expediting the development of insulating material and establishes PI/cellulose insulating paper as an avant-garde alternative for high-voltage transformers, ushering in a new era for insulation materials.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Polyimide-Modified Cellulose Insulating Paper With Improved Thermal Stability and Insulation Properties\",\"authors\":\"Wenchang Wei;Yiyi Zhang;Haiqiang Chen;Chuqi Xu;Shuangxi Nie;Junwei Zha\",\"doi\":\"10.1109/TDEI.2024.3414376\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"As the voltage level continues to rise, an imperative demand arises for novel insulating papers characterized by superior electrical insulation strength and heightened thermal stability, to align with the transformative advancements in high-voltage power transformers. Nevertheless, conventional approaches relying on “trial-and-error” approaches encounter significant challenges in expeditiously developing alternative materials. Therefore, the mechanical, thermal stability and dielectric attributes of polyimide (PI)/cellulose insulating paper have been predicted through molecular dynamics (MD) simulations. Subsequently, insulating papers of the composite variety, featuring varying PI fiber content, have been fabricated and subjected to comprehensive investigations of their thermal stability and electrical characteristics. In comparison to pure cellulose insulating paper, the 6% PI/cellulose composite proves (P6) to be the most representative, exhibiting a notable 26.24% increase in tensile strength, a rise in glass transition temperature from 113.4 to 124.7 K, a reduction in permittivity from 4.22 to 3.25, a substantial 58.33% decrease in dielectric loss, and a 30.35% enhancement in breakdown strength. This study unequivocally confirms the efficacy of MD simulations in expediting the development of insulating material and establishes PI/cellulose insulating paper as an avant-garde alternative for high-voltage transformers, ushering in a new era for insulation materials.\",\"PeriodicalId\":13247,\"journal\":{\"name\":\"IEEE Transactions on Dielectrics and Electrical Insulation\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2024-06-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Transactions on Dielectrics and Electrical Insulation\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10556643/\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Dielectrics and Electrical Insulation","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10556643/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Polyimide-Modified Cellulose Insulating Paper With Improved Thermal Stability and Insulation Properties
As the voltage level continues to rise, an imperative demand arises for novel insulating papers characterized by superior electrical insulation strength and heightened thermal stability, to align with the transformative advancements in high-voltage power transformers. Nevertheless, conventional approaches relying on “trial-and-error” approaches encounter significant challenges in expeditiously developing alternative materials. Therefore, the mechanical, thermal stability and dielectric attributes of polyimide (PI)/cellulose insulating paper have been predicted through molecular dynamics (MD) simulations. Subsequently, insulating papers of the composite variety, featuring varying PI fiber content, have been fabricated and subjected to comprehensive investigations of their thermal stability and electrical characteristics. In comparison to pure cellulose insulating paper, the 6% PI/cellulose composite proves (P6) to be the most representative, exhibiting a notable 26.24% increase in tensile strength, a rise in glass transition temperature from 113.4 to 124.7 K, a reduction in permittivity from 4.22 to 3.25, a substantial 58.33% decrease in dielectric loss, and a 30.35% enhancement in breakdown strength. This study unequivocally confirms the efficacy of MD simulations in expediting the development of insulating material and establishes PI/cellulose insulating paper as an avant-garde alternative for high-voltage transformers, ushering in a new era for insulation materials.
期刊介绍:
Topics that are concerned with dielectric phenomena and measurements, with development and characterization of gaseous, vacuum, liquid and solid electrical insulating materials and systems; and with utilization of these materials in circuits and systems under condition of use.