Preliminary Testing to Determine the Best Process Parameters for Polymer Laser Sintering of a New Polypropylene Polymeric Material

Table 1

A summary of the suitable process parameters for various commercially available polypropylene powders based on best mechanical properties [8].

Material	Coathylene (80%)+PA12 (20%)	PP-R201	iCoPP	PP CP 22 (Diamond Plastics)	Rolaserit PP (ROWAK)	Rolaserit PP (ROWAK)	Coathylene+SiO2 (0.25 wt %)
Machine	DTM Sinterstation 2000	HRPS-IV PLS system	DTM Sinterstation 2000	DTM Sinterstation 2000	EOS Formiga P100	DTM Sinterstation 2000	Open PBF system
Laser bed temp. (°C)	160	150	122	148	—	—	150
Laser power (W)	6, 7, 8, 9	8.25,11, 13.75, 16.5	15, 20, 25	15, 20, 25	18, 21.5, 25	21, 41	15, 16.5, 18
Layer thickness (mm)	0.10	0.15	0.10	0.10	0.06, 0.10, 0.12	0.10, 0.30	0.15
Scanning velocity (mm/s)	1257	1500, 2000, 2500, 3000	5080	3500, 5080	4000, 5000	5000	2000, 2250, 2500
Scanning space (mm)	0.15, 0.25	0.20	0.23	0.23	0.15, 0.20, 0.25	0.20	0.30