Study on Process Optimization and Properties of PLA/HA Composites by SLS

被引：0
|
作者：
Lin K. [1 ]
Liu J. [1 ]
Zhang Y. [1 ]
Yan C. [1 ]
机构：
[1] State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2020年 / 31卷 / 19期
关键词：
Contact angle; Forming parameter; Hydroxyapatite(HA); Polylactic acid(PLA); Selective laser sintering(SLS);
D O I：
10.3969/j.issn.1004-132X.2020.19.012
中图分类号：
学科分类号：
摘要：
PLA(a biodegradable material) and HA(the main inorganic component) were used as research objects. In order to obtain the optimal parameters of SLS parts of composite materials, the SLS process of pure PLA was optimized firstly. It is found that the tensile strength of pure PLA prepared by SLS are over 23 MPa when the laser energy density range is as 0.040~0.075 J/mm2, and the highest strength is as 27.28 MPa. The PLA/HA composites with different HA contents were processed with laser energy density of 0.040 J/mm2, laser power of 12 W and scanning speed of 1 500 mm/s, to study the influences of HA contents on the microstructure and mechanics properties of PLA/HA composites. The experimental results show that the composite with 10% mass fraction HA has the best mechanics properties and micromorphology. The water contact angle tests also exhibit that the contact angles of the materials decrease from 69.52° to 57.96°, which indicate that the hydrophilicity of the materials is improved. © 2020, China Mechanical Engineering Magazine Office. All right reserved.
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页码：2355 / 2362and2370
相关论文
共 19 条
  • [1] OLAKANMI E O, COCHRANE R F, DALGARNO K W., A Review on Selective Laser Sintering/Melting (SLS/SLM) of Aluminium Alloy Powders: Processing, Microstructure, and Properties[J], Progress in Materials Science, 74, pp. 401-477, (2015)
  • [2] PETZOLD S, KLETT J, SCHAUER A, Et al., Surface Roughness of Polyamide 12 Parts Manufactured Using Selective Laser Sintering, Polymer Testing, 80, (2019)
  • [3] AHMED N., Direct Metal Fabrication in Rapid Prototyping:a Review, Journal of Manufacturing Processes, 42, pp. 167-191, (2019)
  • [4] YOUSSEF A, HOLLISTER S J, DALTON P D., Additive Manufacturing of Polymer Melts for Implantable Medical Devices and Scaffolds[J], Biofabrication, 9, 1, (2017)
  • [5] YU Guoqing, BI Chao, Effects of 3D Printing Parameters on Tensile Performance of PLA Printed Specimens, China Plastics, 31, 11, pp. 125-129, (2017)
  • [6] PAN Gangwei, YANG Jing, SUN Qisong, Et al., Modification and Application Progress of 3D Printing Poly (Lactic Acid) Materials, Plastic, 48, 3, pp. 31-35, (2019)
  • [7] FU Ya, CHENG Chao, ZHANG Bingbing, Et al., Studies on the Selective Laser Sintering of High Molecular Weight Poly (D, L-Lactic Acid), Journal of Functional Materials, 41, 9, pp. 1667-1670, (2010)
  • [8] PAN Teng, ZHU Wei, YAN Chunze, Et al., Selective Laser Sintering 3D Printing of Biomedical Polymer Materials, Polymeric Materials Science and Engineering, 32, 3, pp. 178-183, (2016)
  • [9] FUKUSHIMA K, FEIJOO J L, YANG M., Comparison of Abiotic and Biotic Degradation of PDLLA, PCL and Partially Miscible PDLLA/PCL Blend[J], European Polymer Journal, 49, 3, pp. 706-717, (2013)
  • [10] GORSHENEV V N., Method for Forming Porous Calcium-Phosphate Polymer Composites, Russian Journal of Physical Chemistry B, 13, 1, pp. 177-183, (2019)
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