NDLI: Investigation into the selective laser sintering of styrene–acrylonitrile copolymer and postprocessing

Content Provider	Springer Nature Link
Author	Yan, Chunze Shi, Yusheng Yang, Jingsong Liu, Jinhui
Copyright Year	2010
Abstract	The amorphous polymer of polystyrene (PS) has been widely used in the selective laser sintering (SLS) process. However, PS is not suitable to make parts with thin-wall or delicate structures because of the poor mechanical properties of its SLS parts. Therefore, styrene–acrylonitrile copolymer (SAN), another kind of amorphous polymers, was investigated as an SLS material. The effects of laser energy density on the relative density, mechanical properties, and dimensional accuracy of the SLS parts were studied, and the properties of PS and SAN SLS parts were compared. The postprocessing method of infiltrating with epoxy resin was used to reinforce the green SAN SLS parts. The results show that there is little difference in the relative density between the SAN and PS SLS parts, while the flexural strength of the SAN SLS specimens is obviously higher than that of the PS SLS specimens at the same energy density. After the postprocessing, the flexural strength, flexural modulus, and impact strength of the SAN SLS specimens increase by 133%, 4394%, and 254%, respectively, and the SLS parts maintain relatively high-dimensional accuracy although slight shrinkage occurs due to epoxy resin cure. SAN can be used to fabricate SLS parts with more complex and delicate structures.
Starting Page	973
Ending Page	982
Page Count	10
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	51
Issue Number	9-12
e-ISSN	14333015
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-05-02
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Selective laser sintering Styrene–acrylonitrile copolymer Mechanical properties Morphology Post processing Computer-Aided Engineering (CAD, CAE) and Design Mechanical Engineering Production/Logistics Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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