A New Approach In Sintering Formulationof A Cristalline Polymer For Selective Laser Sintering Application

• Main Author: Perpustakaan UGM, i-lib
• Format: Article NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2004
• Subjects: Jurnal i-lib UGM
• Online Access: https://repository.ugm.ac.id/23049/; http://i-lib.ugm.ac.id/jurnal/download.php?dataId=5980
• Institution: Universitas Gadjah Mada

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