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橡塑技术与装备 CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT

容性 [J]. 中国塑料，2016,30(10):36-41. [13] 张蕾，郭宙平，罗红雨 . 硬膜外麻醉导管段断裂处理 1 例及经
[8] 邵树仁，吴和成，唐林，等 . 医用聚氨酯材料的研究及应用进 验总结 [J]. 甘肃科技纵横，2019,48(03):92-93+80.
展 [J]. 聚氨酯工业，2022,37(02):1-6. [14] 宋荣华，张永春，刘肖平 . 防止硬膜外导管折断的实验研究 [J].
[ 9 ] Pa t h i r a j a A. Gu n a t i l l a k e e t a l . Ad v a n c e m e n t s i n t h e 张家口医学院学报，2001(05):53.
Development of Biostable Polyurethanes[J]. Polymer [15] 解焕真，冯玉真 . 硬膜外阻滞麻醉导管滞留并折断 1 例报告 [J].
Reviews, 2019, 59(3): 391-417. 中国乡村医药，2006(05):48-49.
[10] Zhang, Junhao et al. Few layered Co(OH)(2) ultrathin [16] 马海文，张林 . 剖宫产术中硬膜外导管折断 1 例 [J]. 现代中西
nanosheet-based polyurethane nanocomposites with 医结合杂志，2006(17):2 307.
reduced fire hazard: from eco-friendly flame retardance [17] 张金山 . 硬膜外间隙导管折断打结手术取出 1 例 [J]. 福建医药
to sustainable recycling[J]. Green chemistry, 2016, 18(10): 杂志，2008(03):172-173.
3 066-3 074. [18] 李洋，魏智彬，云利兵，等 . 硬膜外麻醉致导管椎管内断裂一
[11] Disposable Anesthesia Puncture Kits Market 2014, Global 例临床分析 [J]. 临床误诊误治，2018,31(03):45-47.
Industry Share, Growth[J]. M2 Presswire, 2015, [19] 吴大鸣，李晓林，刘颖 . 影响挤出成型精密度的因素 [J]. 塑料，
[12] 湛娜 . 麻醉导管断裂监管对策的思考 [J]. 中国医疗器械杂志， 2003(01):26-30.
2020:44(05).

Experimental study on tensile properties of TPU conduits

Guo Nan, Miao Wei, Cheng Lingling, Chen Pengtao, Yang Xiaole, Li Ruobing, Li Menglai, Chen Yongzhen
(Henan Tuoren Medical Device Group Co.,LTD., Xinxiang 453400, Henan,China)

Abstract: Using thermoplastic polyurethane elastomer (TPU) as raw material, TPU conduits were obtained
through extrusion molding process. The effects of tube structure, die core size, raw materials, and process
parameters on the tensile resistance of TPU conduits were studied. The experimental results show that the main
pipe material is 1195A, the reinforcing rib material is TT-1055D, the die size is 2.8 mm, and the core rod size is
1.7 mm; The first zone temperature of the 25 # extruder is 195 ℃ , the second zone temperature is 200 ℃ , the
third zone temperature is 207 ℃ , the flange temperature is 203 ℃ , the 25 # connector temperature is 195 ℃ ,
the first zone temperature of the 20 # extruder is 200 ℃ , the second zone temperature is 210 ℃ , the third zone
temperature is 215 ℃ , the flange temperature is 200 ℃ , the 20 # connector temperature is 195 ℃ , the front
mold temperature is 195 ℃, the rear mold temperature is 200 ℃ , and the mouth mold temperature is 195 ℃; The speed
of the 25 # extruder is 8.5 r/min, and the speed of the 20 # extruder is 8.5 r/min. It can achieve a breaking
force of 40 N for TPU conduits with an outer diameter of 1.0 mm, improving product quality and reducing the
risk of pipe breakage.
Key words: thermoplastic polyurethane elastomer catheter; extrusion; tensile properties; breaking force

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