A New Approach In Sintering Formulationof A Cristalline Polymer For Selective Laser Sintering Application
This paper reports the results of an investigation in sintering formulation of a crystalline polymer. It highlights a development of a new approach to formulation of a sintering process based on the viscosity measurement due to the lack of crystalline polymer's data. Two areas were addressed du...
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| Format: | Article NonPeerReviewed |
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[Yogyakarta] : Universitas Gadjah Mada
2004
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| Online Access: | https://repository.ugm.ac.id/23049/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=5980 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | This paper reports the results of an investigation in sintering formulation of a crystalline polymer. It highlights a development of a new approach to formulation of a sintering process based on the viscosity measurement due to the lack of crystalline polymer's data. Two areas were addressed during the investigation: viscosity of melting and sintering formulation based on the viscosity results. A nylon-12 based material powder was used both in the model and experiment. To examine this new formula, test case was carried out to predict activation energy and pre-exponential factor and ultimately to predict sintered part density of a crystalline polymer. The results show that sintering formula for crystalline polymer can be developed on the basis of the amorphous polymer data. The density's prediction gives a good agreement with the measurement for the activation energy (E /R) of 12266.78 K and pre-exponential factor (A,) of 50E+10 s-'.
Keywords: amorphous, crystalline, viscosity, activation energy, sintering, density |
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