EPDM防水卷材耐久性的热老化和动力学预测.pdf

DOI ：CNKI:50-1052/TU1014.012 网络出版时间：2011-10-13 10:14 网络出版地址：/kcms/detail/50.1052.TU1014.012.html EPDM 防水卷材耐久性的热老化及动力学预测 * 尚建丽，米钰 （西安建筑科技大学 材料科学与工程学院，陕西 西安 710055 ） 摘 要:通过分析三元乙丙橡 （EPDM ）防水卷材的特点，针对带保护层EPDM防水卷材因受到热、 氧作用，会发生一定程度的老化。其中以力学性能的下降和增塑剂的迁移表现尤为突出，从而造成 此种材料的使用寿命的缩减。对老化前后试样进行SEM及FTIR 的微观测试，采用加速热老化及热分 析动力学的方法，分别建立EPDM 防水卷材性能指标、使用条件和使用寿命关系的模型，对其使用 寿命进行预测，为建筑设计、施工及材料的研究，提供一定的技术支持。 关键词:三元乙丙橡 ；热老化；TG ；SEM；IR ；热分析动力学；寿命预测 中图分类号: TU522.1 文献标识 :A Application of thermal aging and kinetics to predict the durability of EPDM waterproofing membrane Shang Jian-li, Mi Yu (Materials Science and Engineering College, Xi’an University of Architecture Technology, Xi’an 710055, P.R.China) Abstract: This paper analyzes the characteristics of EPDM waterproofing membrane. With a protective layer for EPDM waterproofing membrane that due to be heat, oxygen effect will occur to some extent aging. Including the decline of mechanical properties and plasticizer migration is particularly outstanding, resulted in a reduction in service life of the material. Unaged and aged samples were tested by SEM and FTIR as well as using accelerated thermal aging and thermal analysis kinetic method, the mode of EPDM waterproofing membrane between performance indicators and service life under certain conditions was