Fabrication and Electrical, Thermal and Morphological Properties of Novel Carbon Nanofiber Web/Unsaturated Polyester Composites
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 11권 / 4호
ㆍ저자명 : Seong Hwan Kim, Oh Hyeong Kwon , Donghwan Cho
ㆍ저자명 : Seong Hwan Kim, Oh Hyeong Kwon , Donghwan Cho
목차
1. Introduction2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgement
References
한국어 초록
Novel unsaturated polyester composites with PAN-based nanofiber, stabilized PAN nanofiber, and carbonized nanofiberwebs have been fabricated, respectively, and the effects of the nanofiber web content on their electrical resistivity, the thermal
stability, dynamic storage modulus, and fracture surfaces were studied. The result demonstrated that the introduction of just
one single layer (which is corresponding to 2 wt.%) of the carbonized nanofiber web to unsaturated polyester resin (UPE)
could contribute to reducing markedly the electrical resistivity of the resin reflecting the percolation threshold, to improving
the storage modulus, and to increasing the thermal stability above 350oC. The effect on decreasing the resistivity and
increasing the modulus was the greatest at the carbonized PAN nanofiber web content of 8 wt.%, particularly showing that the
storage modulus was increased about 257~283% in the measuring temperature range of −25oC to 50oC. The result also
exhibited that the carbonized PAN nanofibers were distributed uniformly and compactly in the unsaturated polyester,
connecting the matrix three-dimensionally through the thickness direction of each specimen. It seemed that such the fiber
distribution played a role in reducing the electrical resistivity as well as in improving the dynamic storage modulus.
영어 초록
Novel unsaturated polyester composites with PAN-based nanofiber, stabilized PAN nanofiber, and carbonized nanofiberwebs have been fabricated, respectively, and the effects of the nanofiber web content on their electrical resistivity, the thermalstability, dynamic storage modulus, and fracture surfaces were studied. The result demonstrated that the introduction of justone single layer (which is corresponding to 2 wt.%) of the carbonized nanofiber web to unsaturated polyester resin (UPE)could contribute to reducing markedly the electrical resistivity of the resin reflecting the percolation threshold, to improvingthe storage modulus, and to increasing the thermal stability above 350oC. The effect on decreasing the resistivity andincreasing the modulus was the greatest at the carbonized PAN nanofiber web content of 8 wt.%, particularly showing that thestorage modulus was increased about 257~283% in the measuring temperature range of −25oC to 50oC. The result alsoexhibited that the carbonized PAN nanofibers were distributed uniformly and compactly in the unsaturated polyester,connecting the matrix three-dimensionally through the thickness direction of each specimen. It seemed that such the fiberdistribution played a role in reducing the electrical resistivity as well as in improving the dynamic storage modulus.참고 자료
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