Development of novel knitted composite artificial trachea and an experimental study on its mechanical properties 玄武巖纖維及其復(fù)合材料基本力學(xué)性能實驗研究
Secondly , based on the ideal characters of artificial trachea , three types of tubular fabric were designed as the stent : woven tubular fabric ; plating knitted tubular fabric and completely degradable knitted tubular fabric which is made of pgla only 其次根據(jù)人工氣管的理想性能特征設(shè)計了三種用作支架的管道織物:機織組織管道織物、針織添紗組織管道織物和僅采用聚乙丙交酯編織的可完全降解的針織緯平針管道織物。
The objective of this project is to properly integrate the two kinds of different materials above to develop a new type of biologic composites artificial trachea , whose basic framework is textile fabric with sequential coating of bioactive materials , and to obtain the proper fabrication technology based on the results of experiments 本課題的研究工作旨在研制開發(fā)出以紡織物為支架、生物活性材料為涂層的新型生物復(fù)合材料人工氣管,希望能夠?qū)⑦@兩類不同特性材料進(jìn)行有機組合從而產(chǎn)生綜合兩者優(yōu)異性能的復(fù)合體,同時通過對其各項性能的測試和分析來獲得較佳的制造工藝。
Then mechanical experiments were carried out to measure the longitudinal tensile strength and radial supportive strength . based on the testing results , the different deformation functions of the tubular fabric were obtained and we conclude that the strength indexes vary directly as the material diameter and the arrangement of the pp and pgla has a prominent influence to the radial supportive strength of the woven artificial trachea . in addition , the degradation property of the tracheal prosthesis was investigated and this provides another important foundation for the fabrication technology of the artificial trachea 在試驗測試部分,本課題對試樣的拉伸性能和徑向強度進(jìn)行了測定,根據(jù)試驗的結(jié)果深入研究了每種管道織物在測試過程中的不同變形作用,也得到了不同的編織工藝參數(shù)對人工氣管力學(xué)性能的不同影響:原料的細(xì)度的變粗可增大人工氣管各力學(xué)強度指標(biāo);機織組織管道織物中兩種原料的排列方式對人工氣管的拉伸性能并無明顯影響而對其徑向強度影響顯著,其中以“ 1隔1 ”和“ 3隔3 ”的排列方式較佳。