疝修复用经编聚丙烯补片的疲劳性能  

Fatigue Properties of Warp Knitted PP Hernia Repair Patch

作　　者：王舫[1,2] 苗琳莉 王文祖[1,2] 王璐[1,2] 

机构地区：[1]东华大学纺织学院,上海201620 [2]东华大学纺织面料技术教育部重点实验室,上海201620

出　　处：《东华大学学报（自然科学版）》2014年第6期692-695,700,共5页Journal of Donghua University(Natural Science)

摘　　要：聚丙烯(PP)是一种广泛应用于疝修复手术中的补片材料,临床发现补片破裂导致疝复发的案例.通过对国产PP补片分别进行10%,20%,25%的定伸长率反复拉伸测试和20,30,40N的定负荷反复拉伸测试,研究其疲劳性能,并比较补片的弹性回复率、塑性变形率和疲劳后强度的变化.结果表明随着补片试样的伸长率和负荷的增加,弹性回复性逐渐变差,断裂强度损失增大,其横、纵向的疲劳性能不同.因此建议补片在临床使用时,针对不同病患特征,考虑横、纵向放置的方向性.Polypropylene（PP）patch is widely used in herniorrhaphy,however there is recurrence case because of patch rupture.In order to study the fatigue properties of PP patch,the repeated elongation/load experiments were carried out at 10%,20%,25% constant elongation and 20,30,40 N constant load respectively.Elastic recovery rate,plastic deformation rate and the change of strength after fatigue test were compared.The result showed that,with the increase of constant elongation and load,elastic recovery decreased gradually,and the loss of breaking strength increased.Patch showed different fatigue performance in transverse and longitudinal direction.Therefore,for different patients,the placement of patch is different in clinical applications.

关 键 词：聚丙烯(PP)补片 纺织结构 弹性回复 疲劳性能 

分 类 号：TS101.4[轻工技术与工程—纺织工程]