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Presenter :Yu-Cheng Cheng
Date:2015/6/11
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OUTLINE
Introduction
Experimental
Results and discussion
Conclusion
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Introduction
Ultrahigh molecular weight polyethylene (UHMWPE) fiber is a new kind of high performance fiber developed in the recent two decades.
Its distinctive properties are low friction coefficient, high wear resistance, high mechanical properties and, especially high strength can be reached by the UHMWPE fiber due to orientation of its very long polymeric chains.
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OUTLINE
Introduction
Experimental
Results and discussion
Conclusion
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Experimental
Materials
Experimental Setup
Sample Preparation
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Materials
UHMWPE powder
1,2-Dichloroethane
Cyclopentane
Irganox 1010
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Materials
UHMWPE powder
1,2-Dichloroethane
Cyclopentane
Irganox 1010
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Materials
UHMWPE powder
1,2-Dichloroethane
Cyclopentane
Irganox 1010
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Materials
UHMWPE powder
1,2-Dichloroethane
Cyclohexane
Irganox 1010
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Experimental
Materials
Experimental Setup
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Experimental Setup
UHMWPE powder
Autoclave
Cyclohexane
Irganox 1010CO2
O2 Steel nozzle
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OUTLINE
Introduction
Experimental
Results and discussion
Conclusion
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Results and discussion
Structural transformation
SEM
DSC
XRD
Mechanical properties
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Structural transformation
Structural transformation of (a) FS-F and (b) GS-F
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Results and discussion
Structural transformation
SEM
DSC
XRD
Mechanical properties
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SEM
Fig. 2(a) not a single one but a bunch of thinner fibers.Fig. 2(b) with smooth surface, round shape and some crevices could be observed.
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Results and discussion
Structural transformation
SEM
DSC
XRD
Mechanical properties
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DSC
The melting point of the raw material powder was 142.0 °C.
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Results and discussion
Structural transformation
SEM
DSC
XRD
Mechanical properties
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XRD
The prominent peaks located at 19.4°, 21.5°, and 23.9°were corresponding to (100), (110) and (200) crystal lattice planes of UHMWPE, respectively.
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Results and discussion
Structural transformation
SEM
DSC
XRD
Mechanical properties
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Mechanical properties
It can be concluded that the breaking strength and Young׳s modulus of FS-F were significantly lower while the breaking elongation of FS-F was higher than the GS-F׳s.
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OUTLINE
Introduction
Experimental
Results and discussion
Conclusion
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Conclusion The UHMWPE microfiber was successfully
fabricated by flash-spinning using 1,2-Dichloroethane and cyclopentane as solvent.
The FS-F had lower strength and modulus, which was still higher than most of the other polymer fibers, but higher specific surface area and breaking elongation than the GS-F׳s.
The exactly intrinsic characteristic proved the FS-F to be suitable for various potential applications such as filter, microsensors, protective clothing and so on.
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Thank you for your attention