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- Title
Experimental investigations of machining characteristics on polydimethylsiloxane (PDMS) by cryogenic abrasive air-jet machining.
- Authors
Zhang, Guiguan; Sun, Yuli; Liu, Xu; Gao, Hang; Zuo, Dunwen
- Abstract
In this study, a cryogenic abrasive air jet machining (CAAJM) experimental system is designed and built based on the glass transition characteristics of polydimethylsiloxane (PDMS). Fixed processing parameters are then used to evaluate the effectiveness of machining PDMS by abrasive air jet machining (AAJM) at room and cryogenic temperatures, and the results show that cryogenic could improves the processing quality of PDMS. Furthermore, the potential effects of cryogenic treatment on the mechanical properties and wettability of PDMS were analyzed. The results showed that the mechanical properties was slightly decreased under cryogenic treatment, but the wettability was slightly increased. These resulted will further promote the application of CAAJM in the field of microfluidic analytical system. Based on this, experiments are conducted into how microchannel processing quality is influenced by the scanning speed and the erosion distance, pressure, and angle. The results show that better PDMS microchannels are processed when the erosion distance is 2.5–3.5 μm, the erosion pressure is 0.4 MPa, the erosion angle is 60–75°, and the scanning speed is 0.25 mm/s.
- Subjects
ABRASIVE machining; AIR jets; POLYDIMETHYLSILOXANE; MACHINING; GLASS transitions
- Publication
International Journal of Advanced Manufacturing Technology, 2022, Vol 118, Issue 7/8, p2711
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-021-08147-3