Effect of additional heat-treatment temperature on chemical, microstructural, mechanical, and electrical properties of commercial PAN-based carbon fibers

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 12권 / 4호
ㆍ저자명 : DonghwanCho, SungBongYoon, ChaeWookCho, JongKyooPark

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

한국어 초록

In this present work, the effect of additional heat-treatment (AHT) in the range from
1800oC to 2400oC on the chemical composition, morphology, microstructure, tensile properties,
electrical resistivity, and thermal stability of commercial polyacrylonitrile (PAN)-
based carbon fibers was explored by means of elemental analysis, electron microscopy, Xray
diffraction analysis, single fiber tensile testing, two-probe electrical resistivity testing,
and thermogravimetric analysis. The characterization results were in agreement with each
other. The results clearly demonstrated that AHTs up to 2400oC played a significant role in
further contributing not only to the enhancement of carbon content, fiber morphology, and
tensile modulus, but also to the reduction of fiber diameter, inter-graphene layer distance,
and electrical resistivity of “as-received” carbon fibers without AHT. The present study suggests
that key properties of commercial PAN-based carbon fibers of an intermediate grade
can be further improved by proprietarily adding heat-treatment without applying tension in
a batch process.

영어 초록

In this present work, the effect of additional heat-treatment (AHT) in the range from1800oC to 2400oC on the chemical composition, morphology, microstructure, tensile properties,electrical resistivity, and thermal stability of commercial polyacrylonitrile (PAN)-based carbon fibers was explored by means of elemental analysis, electron microscopy, Xraydiffraction analysis, single fiber tensile testing, two-probe electrical resistivity testing,and thermogravimetric analysis. The characterization results were in agreement with eachother. The results clearly demonstrated that AHTs up to 2400oC played a significant role infurther contributing not only to the enhancement of carbon content, fiber morphology, andtensile modulus, but also to the reduction of fiber diameter, inter-graphene layer distance,and electrical resistivity of “as-received” carbon fibers without AHT. The present study suggeststhat key properties of commercial PAN-based carbon fibers of an intermediate gradecan be further improved by proprietarily adding heat-treatment without applying tension ina batch process.

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