Extrusion Process of Multi-Specification Polylactide Micro Tubes by a Single Extrusion Die

被引：0
|
作者：
Wei Y. [1 ]
Wang M. [1 ]
Zhao D. [1 ]
Liu K. [1 ]
Shen Z. [1 ]
机构：
[1] School of Mechanical Engineering, Dalian University of Technology, Dalian
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2019年 / 35卷 / 09期
关键词：
Extrusion die; Extrusion process; Micro tube outer diameter; Micro tube wall thickness; Polylactide micro tube;
D O I：
10.16865/j.cnki.1000-7555.2019.0266
中图分类号：
学科分类号：
摘要：
In this paper, the extrusion process of polylactide micro tubes was studied systematically. The effects of gas flow rate, screw speed and pulling speed on outer diameter, wall thickness and ovality of the micro tubes were obtained. Experimental results show that gas flow rate, screw speed and pulling speed have significant nonlinear effects on outer diameter and wall thickness. Pulling speed and screw speed affect the outer diameter of the micro tubes more obviously than gas flow rate. Screw speed, pulling speed and gas flow rate have successively weak effects on the thickness of the micro tubes. The ovality of the micro-tubes is directly affected by the gas flow rate, and the ovality decreases obviously with the increase of the gas flow rate. At lower gas flow rates, the ovality can be reduced by 68% if the gas injection volume is doubled. By changing pulling speed, screw speed, gas flow rate and the combination of these parameters, four specifications of micro tubes can be extruded in sequence by a single extrusion die. © 2019, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：95 / 102
页数：7
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共 10 条
  • [1] Yang W., Fortunati E., Dominici F., Et al., Effect of processing conditions and lignin content on thermal, mechanical and degradative behavior of lignin nanoparticles/polylactic (acid) bionanocomposites prepared by melt extrusion and solvent casting, Eur. Polym. J., 71, pp. 126-139, (2015)
  • [2] Herrera N., Salaberria A.M., Mathew A.P., Et al., Plasticized polylactic acid nanocomposite films with cellulose and chitin nanocrystals prepared using extrusion and compression molding with two cooling rates: Effects on mechanical, thermal and optical properties, Composites Part A, 83, pp. 89-97, (2016)
  • [3] Cailloux J., Hakim R.N., Santana O.O., Et al., Reactive extrusion: A useful process to manufacture structurally modified PLA/o-MMT composites, Composites Part A, 88, pp. 106-115, (2016)
  • [4] Dhar P., Tarafder D., Kumar A., Et al., Thermally recyclable polylactic acid/cellulose nanocrystal films through reactive extrusion process, Polymer, 87, pp. 268-282, (2016)
  • [5] Guerra A.J., San J., Ciurana J., Fabrication of PCL/PLA composite tube for stent manufacturing, Proced. Crip, 65, pp. 231-235, (2017)
  • [6] Guerra A., Ciurana J.D., Fibre laser cutting of polymer tubes for stents manufacturing, Proced. Manuf., 13, pp. 190-196, (2017)
  • [7] Grabow N., Bunger C.M., Schultze C., Et al., A biodegradable slotted tube stent based on poly(L-lactide) and poly(4-hydroxybutyrate) for rapid balloon-expansion, Ann. Biomed. Eng., 35, pp. 2031-2038, (2007)
  • [8] Arbeiter D., Schumann K., Sahmel O., Et al., The effect of thermal treatment on the mechanical properties of PLLA tubular specimens, Curr. Directions Biomed. Eng., 2, pp. 27-29, (2016)
  • [9] Zheng Q.L., Ge D.W., Chen Y.W., Et al., Variation of tube diameter and wall thickness in medical micro-diameter tube extrusion, Plastics, 41, 2, pp. 24-27, (2012)
  • [10] Shao Y.K., Xie S.G., Theoretical research on the extruding-drawing production of plastic tubes, China Synthetic Resin and Plastics, 4, pp. 41-44, (1994)
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