具有局部耐久结构覆膜支架织物覆膜的成型与性能研究

发布时间：2018-06-20 22:09

本文选题：织物覆膜 + Z形金属支架　；参考：《中国生物医学工程学报》2017年02期

【摘要】：覆膜支架织物覆膜的失效主要是由Z形金属支架尖端对周围织物覆膜的反复磨损所引起。拟设计并制备一种具有局部耐久结构的覆膜支架织物覆膜,并从结构(织物密度、壁厚和水渗透性)、力学性能(管状织物径向拉伸和顶破)及体外加速疲劳模拟实验三方面研究组织结构和纬向密度对织物覆膜结构与性能的影响。结果表明,具有局部耐久结构的织物壁厚低于0.15 mm,水渗透性低于15 mL/min/cm~2,显著低于商用样及对照样;织物纬密较高,尤其是试样A,纬密在7~8根/mm之间。径向拉伸断裂强度平均12.3 N/mm,与商用样接近;顶破强度平均27.3 N/mm~2,显著优于商用样,表明基本满足覆膜支架织物覆膜的结构与力学性能要求;具有局部耐久结构的织物覆膜出现零破损,表明局部耐久结构的联合组织可有效遏制织物覆膜的磨损,但长期耐久性能仍需进一步研究。
[Abstract]:The failure of film covering for covered scaffold is mainly caused by repeated wear and tear of the surrounding fabric covering the surrounding fabric with the tip of the Z shaped metal support. A film covering the covered scaffold with a local durable structure is designed and prepared, and the mechanical properties (radial tensile and top breaking of tubular fabric) and body addition are applied to the structure (fabric density, wall thickness and water permeability). The effect of structure and latitudinal density on the structure and properties of fabric mulching is studied in three aspects. The results show that the wall thickness of the fabric with local durability is lower than 0.15 mm, water permeability is less than 15 mL/min/cm~2, significantly lower than the commercial sample and the same, the weft density is higher, especially the sample A, and the weft density is in the 7~8 root /mm. The radial tensile fracture strength is 12.3 N/mm, which is close to the commercial sample, and the average 27.3 N/mm~2, which is obviously better than the commercial sample. It shows that it basically meets the structure and mechanical properties of the covered covered fabric, and the fabric covered with local durable structure has zero breakage, and the joint organization of the local durable structure can effectively contain the fabric. Film wearing, but long-term durability needs further study.
【作者单位】：东华大学纺织学院纺织面料技术教育部重点实验室;加拿大拉瓦尔大学医学院;
【基金】：国家自然科学基金(81371648) 教育部纺织生物医用材料与技术创新引智基地111计划(B07024) 2016中央高校基本科研业务费基地建设项目(11D110119)
【分类号】：R318.08

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