Jiangeng Bai
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
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Research Interests
Jiangeng Bai has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Haitao Zhao
Department of Mechanical Engineering, Liaoning University of Technology, Jinzhou 121001, China
1 shared publication - Hongxia Li
State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology, Dalian 116023, China
1 shared publication - Rui Wang
Department of Mechanical Engineering, Liaoning University of Technology, Jinzhou 121001, China
1 shared publication - Yunbo Wei
Dalian Rubber & Plastics Machinery Co., Ltd., Dalian 116036, China
1 shared publication
Latest Publications
- Open Access
Study on the Extrusion Molding Process of Polylactic Acid Micro Tubes for Biodegradable Vascular Stents
Polylactic acid (PLA) has been widely used in the field of medical devices. However, few studies have been conducted on the extrusion molding of PLA micro tubes for the preparation of biodegradable vascular stents. In this paper, the extrusion die for PLA single-cavity micro tubes was designed and manufactured by micro-extrusion theory. Taking the outer diameter, wall thickness, wall thickness uniformity and ovality of micro tubes as the evaluation index, the influence of the main extrusion process parameters on the evaluation index was studied. The experimental results show that the outer diameter and wall thickness are significantly affected by screw speed, pulling speed and gas flow rate; extrusion process parameters have little influence on wall thickness uniformity and ovality within a certain range, which mainly depends on the processing accuracy and assembly accuracy of the extrusion die. However, excessively high screw speed and low gas flow rate have significant effects on ovality. Finally, according to the influence of extrusion process parameters on the evaluation index, a series of micro tubes that meet the design requirements are extruded and carved into vascular stent structures.
Open AccessStudy on the Extrusion Molding Process of Polylactic Acid Micro Tubes for Biodegradable Vascular Stents
Polylactic acid (PLA) has been widely used in the field of medical devices. However, few studies have been conducted on the extrusion molding of PLA micro tubes for the preparation of biodegradable vascular stents. In this paper, the extrusion die for PLA single-cavity micro tubes was designed and manufactured by micro-extrusion theory. Taking the outer diameter, wall thickness, wall thickness uniformity and ovality of micro tubes as the evaluation index, the influence of the main extrusion process parameters on the evaluation index was studied. The experimental results show that the outer diameter and wall thickness are significantly affected by screw speed, pulling speed and gas flow rate; extrusion process parameters have little influence on wall thickness uniformity and ovality within a certain range, which mainly depends on the processing accuracy and assembly accuracy of the extrusion die. However, excessively high screw speed and low gas flow rate have significant effects on ovality. Finally, according to the influence of extrusion process parameters on the evaluation index, a series of micro tubes that meet the design requirements are extruded and carved into vascular stent structures.