{"title":"Testing and characterization of high-temperature degradation performance\nof para-aramid fibres","authors":"C. Zhu, Yanping Lin, Xiangai Zhang, Chen Yang","doi":"10.35530/it.075.01.2023115","DOIUrl":null,"url":null,"abstract":"Para-aramid fibres possess excellent properties, including high modulus, high strength, and high-temperature\nresistance, making them highly practical and cost-effective reinforcement materials. To further analyse the usage\nperformance of para-aramid fibres under extreme conditions and explore their degradation behaviour and mechanisms\nat high temperatures, this paper investigates para-aramid fibres through high-temperature annealing. Various tests,\nincluding thermogravimetric analysis, infrared spectroscopy, X-ray diffraction, Ubbelohde viscometry, and universal\nmaterial testing, were employed to analyse changes in the thermal degradation temperature, molecular structure, and\nmechanical properties of para-aramid fibres. Tests have shown that after high-temperature treatment of para-aramid\nfibres, different protruding particles and pits appear on the surface of the fibres, and the molecular structure gradually\nundergoes cleavage and cross-linking. This results in varying degrees of increase in the crystallinity, intrinsic viscosity,\nand apparent grain size of crystal planes in different directions of the para-aramid fibres with rising temperatures. On\nthe other hand, the degree of orientation, the rate of the second type of lattice distortion, thermal performance, and\nmechanical properties show a declining trend. The thermal degradation conforms to the kinetics of a second-order\nreaction.","PeriodicalId":13638,"journal":{"name":"Industria Textila","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industria Textila","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.35530/it.075.01.2023115","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, TEXTILES","Score":null,"Total":0}
引用次数: 0
Abstract
Para-aramid fibres possess excellent properties, including high modulus, high strength, and high-temperature
resistance, making them highly practical and cost-effective reinforcement materials. To further analyse the usage
performance of para-aramid fibres under extreme conditions and explore their degradation behaviour and mechanisms
at high temperatures, this paper investigates para-aramid fibres through high-temperature annealing. Various tests,
including thermogravimetric analysis, infrared spectroscopy, X-ray diffraction, Ubbelohde viscometry, and universal
material testing, were employed to analyse changes in the thermal degradation temperature, molecular structure, and
mechanical properties of para-aramid fibres. Tests have shown that after high-temperature treatment of para-aramid
fibres, different protruding particles and pits appear on the surface of the fibres, and the molecular structure gradually
undergoes cleavage and cross-linking. This results in varying degrees of increase in the crystallinity, intrinsic viscosity,
and apparent grain size of crystal planes in different directions of the para-aramid fibres with rising temperatures. On
the other hand, the degree of orientation, the rate of the second type of lattice distortion, thermal performance, and
mechanical properties show a declining trend. The thermal degradation conforms to the kinetics of a second-order
reaction.
期刊介绍:
Industria Textila journal is addressed to university and research specialists, to companies active in the textiles and clothing sector and to the related sectors users of textile products with a technical purpose.