presenter :yu-cheng cheng date:2015/6/11. outline introduction experimental results and...

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