Abstract
Laser Sintering (LS) allows functional parts to be produced in a wide range of powdered materials using a dedicated machine, and is thus gaining popularity within the field of rapid prototyping. It offers the user the ability to optimise part design in order to meet customer requirements with few manufacturing restrictions. A problem with LS is that sometimes the surface of the parts produced displays a texture similar to that of the skin of an orange (the socalled "orange peel" texture). The main aim of this research is to develop a methodology of controlling the input material properties of PA12 powder that will ensure consistent and good quality of the fabricated parts. Melt Flow Rate (MFR) and Gel permeation chromatography (GPC) were employed to measure the flow viscosity and molecular weight distributions of Polyamide PA12 powder grades. The experimental results proved that recycle PA12 powder with higher melt viscosity polymer has a higher entanglement with a longer molecule chain causes a higher resistance to flow which cause poor and rough surface finished on laser sintered part.
| Original language | English |
|---|---|
| Title of host publication | MATEC Web of Conferences |
| Subtitle of host publication | 3rd Asia Conference on Mechanical and Materials Engineering, ACMME 2015; Chengdu; China; 23 July 2015 through 24 July 2015 |
| Volume | 26 |
| DOIs | |
| Publication status | Published - 12 Oct 2015 |
ASJC Scopus subject areas
- General Chemistry
- General Engineering
- General Materials Science