Investigation of the ageing conditions of PEEK powder for the selective laser sintering process

Yuqing Guo; Hu Chen; Sukun Tian; Yongxiang Xu; Kenan Ma; Shuai Ma; Xiang Wang; Yicha Zhang; Yuchun Sun

doi:10.1080/17452759.2023.2273298

Virtual and Physical Prototyping (Dec 2023)

Investigation of the ageing conditions of PEEK powder for the selective laser sintering process

Yuqing Guo,
Hu Chen,
Sukun Tian,
Yongxiang Xu,
Kenan Ma,
Shuai Ma,
Xiang Wang,
Yicha Zhang,
Yuchun Sun

Affiliations

Yuqing Guo: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & NHC Key Laboratory of Digital Stomatology & Beijing Key Laboratory of Digital Stomatology & Key Laboratory of Digital Stomatology, Chinese Academy of Medical Sciences & NMPA Key Laboratory for Dental Materials, Beijing, People’s Republic of China
Hu Chen: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & NHC Key Laboratory of Digital Stomatology & Beijing Key Laboratory of Digital Stomatology & Key Laboratory of Digital Stomatology, Chinese Academy of Medical Sciences & NMPA Key Laboratory for Dental Materials, Beijing, People’s Republic of China
Sukun Tian: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & NHC Key Laboratory of Digital Stomatology & Beijing Key Laboratory of Digital Stomatology & Key Laboratory of Digital Stomatology, Chinese Academy of Medical Sciences & NMPA Key Laboratory for Dental Materials, Beijing, People’s Republic of China
Yongxiang Xu: Department of Dental Materials, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology, National Clinical Research Center for Oral Diseases, Beijing Key Laboratory of Digital Stomatology, National Medical Products Administration Key Laboratory for Dental Materials, Research Center of Engineering and Technology for Digital Dentistry, Ministry of Health, Beijing, People’s Republic of China
Kenan Ma: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & NHC Key Laboratory of Digital Stomatology & Beijing Key Laboratory of Digital Stomatology & Key Laboratory of Digital Stomatology, Chinese Academy of Medical Sciences & NMPA Key Laboratory for Dental Materials, Beijing, People’s Republic of China
Shuai Ma: School of Medicine, Liaocheng University, Liaocheng, People’s Republic of China
Xiang Wang: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & NHC Key Laboratory of Digital Stomatology & Beijing Key Laboratory of Digital Stomatology & Key Laboratory of Digital Stomatology, Chinese Academy of Medical Sciences & NMPA Key Laboratory for Dental Materials, Beijing, People’s Republic of China
Yicha Zhang: Mechanical Engineering and Design Department, Université de Bourgogne Franche-Comté, Université de Technologie de Belfort-Montbéliard Belfort Cedex, France
Yuchun Sun: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & NHC Key Laboratory of Digital Stomatology & Beijing Key Laboratory of Digital Stomatology & Key Laboratory of Digital Stomatology, Chinese Academy of Medical Sciences & NMPA Key Laboratory for Dental Materials, Beijing, People’s Republic of China

DOI: https://doi.org/10.1080/17452759.2023.2273298
Journal volume & issue: Vol. 18, no. 1

Abstract

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ABSTRACTAgeing mechanism of PEEK powders at optimal powder bed temperature (Tb) and factors affecting their reusability remain unclear. This study investigated effects of gas type (air, nitrogen, and argon) and holding time (0–8 h) on physico-chemical properties of PEEK powders at optimal Tb. The hardness of sintered single-layers was measured to evaluate the quality of the parts. Results revealed that the flowability, morphology, and crystallinity of PEEK powders changed with holding time in different gases. Further, the ageing mechanism involved chain crosslinking within molecular chains in all gases but chain breakage in air. Further, laser power required for SLS decreased with the increase in holding time. However, the hardness of single-layers was stable for powders aged in argon for up to 8 h, but decreased by 7% for powders aged in nitrogen for 4 h. Severe degradation and blackening were observed for single-layers sintered in air using both virgin and aged powders.

Published in Virtual and Physical Prototyping

ISSN: 1745-2759 (Print); 1745-2767 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Science; Technology: Manufactures
Website: https://www.tandfonline.com/nvpp

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Abstract

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