Nanoscale dynamic mechanical imaging of the skin-core difference: From PAN precursors to carbon fibers

被引：50

作者：

Liu, Xiaofang ^{[1
,2
]}

Zhu, Caizhen ^{[1
]}

Guo, Jing ^{[1
,2
]}

Liu, Qianli ^{[3
]}

Dong, Haixia ^{[1
]}

Gu, Yizhuo ^{[3
]}

Liu, Ruigang ^{[1
]}

Zhao, Ning ^{[1
]}

Zhang, Zuoguang ^{[3
]}

Xu, Jian ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 128卷

关键词：

Skin-core difference; Polyacrylonitrile fiber; Oxidative stabilization; Carbon materials; Microstructure; NanoDMA; POLYACRYLONITRILE FIBERS; THERMAL STABILIZATION; HIGH-TEMPERATURE; MICROSTRUCTURE; EVOLUTION; OXYGEN;

D O I：

10.1016/j.matlet.2014.04.176

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, nanoscale dynamic mechanical imaging was used to map the storage modulus along the cross section of fibers during the evolution from polyacrylonitrile (PAN) precursors to carbon fibers. The quantitative characterization of skin-core difference in oxidative stabilized fibers indicated that the primary skin-core structure in the fibers forms at 265 degrees C and the skin-core difference of the final oxidative stabilized fibers in modulus was about 8%. The difference has been enhanced in modulus but reduced in spatial scale during the transition from stabilized PAN fibers to carbon fibers. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：417 / 420

页数：4

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