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New insights into orientation distribution of high strength polyacrylonitrile-based carbon fibers with skin-core structure
Guo, XS; Cheng, YX; Fan, Z; Feng, ZH; He, LL; Liu, RG; Xu, J; He, LL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2016-11-01
Source PublicationCARBON
ISSN0008-6223
Volume109Pages:444-452
AbstractThe continuous changes in orientation angle (OA) across longitudinal sections of high strength polyacrylonitrile-based carbon fibers with circular cross sections were investigated by transmission electron microscopy. A contrast ring was observed in some cross-sections, displaying two contrast zones in the longitudinal section. Two types of OA distribution features were found in the absence or presence of contrast zones. Contrast zones were confirmed as the symbol of the skin-core structure and the boundaries between the skin and core. The high preferred orientation of the basal planes was first identified in the contrast zone, which presented an OA inflexion point (OIP) in the OA plot. The OIP was also detected in the contrast zone for the self-prepared carbon fibers. The OIP and contrast ring shifted towards the core as the preoxidation time increased. For a preoxidation time of 8 h, both the OIP and contrast ring disappeared. A mechanism, based on the stress-induced alignment of the basal planes, was proposed to account for the formation of the OIP. (C) 2016 The Authors. Published by Elsevier Ltd.
description.department[guo, xinshuang ; cheng, yongxin ; he, lianlong] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [fan, zhen ; feng, zhihai] aerosp res inst mat & proc technol, natl key lab adv funct composite mat, beijing 100076, peoples r china ; [liu, ruigang ; xu, jian] chinese acad sci, inst chem, beijing natl lab mol sci, lab polymer phys & chem, beijing 100190, peoples r china ; [guo, xinshuang] univ chinese acad sci, beijing 100049, peoples r china ; [cheng, yongxin] univ sci & technol china, hefei 230026, peoples r china
Subject AreaChemistry, Physical ; Materials Science, Multidisciplinary
Funding OrganizationNational Program on Key Basic Research Project (973 Program) [2011CB605604, 2011CB605803]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76206
Collection中国科学院金属研究所
Corresponding AuthorHe, LL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Guo, XS,Cheng, YX,Fan, Z,et al. New insights into orientation distribution of high strength polyacrylonitrile-based carbon fibers with skin-core structure[J]. CARBON,2016,109:444-452.
APA Guo, XS.,Cheng, YX.,Fan, Z.,Feng, ZH.,He, LL.,...&He, LL .(2016).New insights into orientation distribution of high strength polyacrylonitrile-based carbon fibers with skin-core structure.CARBON,109,444-452.
MLA Guo, XS,et al."New insights into orientation distribution of high strength polyacrylonitrile-based carbon fibers with skin-core structure".CARBON 109(2016):444-452.
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