Investigation of the thermal properties of different grades Polyamide 12 (PA12) in improving laser sintering process (SLS)

Wan Yusoff, Wan Ahmad Yusmawiza and Pham, Duc Trung and Dotchev, Krassimir (2014) Investigation of the thermal properties of different grades Polyamide 12 (PA12) in improving laser sintering process (SLS). Advanced Materials Research, 548/49. pp. 294-296. ISSN 1022-6680

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Abstract

Selective Laser Sintering (SLS) is a combined technology of computer and laser to produce complex 3D prototypes directly from CAD modeling. One of the main advantages of employing this technology is that the non-sintered powder can be recycled and reused for another fabrication. However, the fabricated part could be affected by rough and unacceptable surface texture. As a result, the parts may have to be scrapped and the build has to be repeated with a higher ratio of new material. This paper presents an experimental study of the thermal properties of new and recycled of PA12 powder in the Laser Sintering process. The influence of melting temperature, glass transition temperature and crystallization temperature on these properties is investigated. The experimental results have shown that PA12 powder with high melt flow rate, low melting temperature, low glass transition temperature and low degree of crystallization temperature could improve the sintering process.

Item Type:	Article (Journal)
Additional Information:	3700/38758
Uncontrolled Keywords:	Laser Sintering, Polyamide 12, Surface Finished, Thermal Properties, Viscosity
Subjects:	T Technology > T Technology (General) T Technology > T Technology (General) > T55.4 Industrial engineering.Management engineering. T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr WAN AHMAD YUSMAWIZA WAN YUSOFF
Date Deposited:	15 Oct 2014 16:42
Last Modified:	21 Sep 2017 14:56
URI:	http://irep.iium.edu.my/id/eprint/38758

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