Effects of temperature and stress level on creep and tensile property of polypropylene sutures
Effects of temperature and stress level on creep and tensile property of polypropylene sutures
复制标题
温度和应力水平对聚丙烯缝线蠕变和拉伸性能的影响
DOI：
10.1002/app.13126
复制
发表时间：
2003
影响因子：
3
通讯作者：
Jack G. Zhou
中科院分区：
文献类型：
--
作者：
M. Deng;Jack G. Zhou
在恒温水浴中研究了聚丙烯缝线在不同温度和应力水平下的蠕变行为。研究表明，温度和应力水平显著影响缝线的蠕变行为。高温和应力水平导致缝线发生大的蠕变和永久变形。蠕变数据可以用经验公式很好地描述。对于大多数试验条件，蠕变试验导致缝线发生有限的永久变形。永久变形对温度的依赖性可用阿耳忒修斯型方程来说明。缝线的拉伸性能未受到短期蠕变试验的不利影响，表明聚丙烯缝线具有良好的机械性能。对于小于3小时的蠕变实验，在220 MPa的应力水平和≥ 37°C的温度下观察到缝线的蠕变断裂。© 2003威利期刊公司应用聚合物科学杂志90：3882-3888，2003
An investigation was conducted on creep behaviors of polypropylene sutures under different temperatures and stress levels in a temperature-controlled water bath. The study showed that temperature and stress level significantly affected the creep behaviors of the sutures. High temperature and stress level resulted in large creep and permanent deformation to the sutures. The creep data could be well described by an empirical formula. For most of the test conditions, the creep tests caused limited permanent deformation in sutures. Dependency of the permanent deformation on temperature may be illustrated by an Arrhenius-type equation. The tensile properties of the sutures were not adversely affected by a short-term creep test, indicating good mechanical performance for the polypropylene sutures. For the creep experiment of less than 3 h, the creep rupture of the sutures was observed at a stress level of 220 MPa and temperatures ≥ 37°C. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3882–3888, 2003