EPDM防水卷材耐久性的热老化及动力学预测  

Application of Thermal Aging and Kinetics to Predict the Durability of EPDM Waterproofing Membrane

作　　者：尚建丽[1] 米钰[1] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,西安710055

出　　处：《土木建筑与环境工程》2011年第5期157-162,共6页Journal of Civil,Architectural & Environment Engineering

基　　金：国家科技支撑计划重大项目(2006BAJ03A02)

摘　　要：通过分析三元乙丙橡胶(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。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。The characteristics of EPDM waterproofing membrane are analyzed. Due to the effect of heat and oxygen, aging occurs to EPDM waterproofing membrane with a protective layer to some extent. And the decline of mechanical properties and plasticizer migration are particularly outstanding, resulted in a reduction in service life of the material. Unaged and aged samples were tested by SEM and FTIR. Furthermore, by using accelerated thermal aging and thermal analysis kinetic method, mode of EPDM waterproofing membrane between performance indicators and service life under certain conditions was established to predict its service life, which provides technical support for architectural design, building construction and material research.

关 键 词：三元乙丙橡胶 热老化 TG SEM IR 热分析动力学 寿命预测 

分 类 号：TU522.1[建筑科学—建筑技术科学]