自粘改性沥青对三元乙丙防水片材热老化的不利影响  

Unfabourable Effects of Self-Adhesive Modified Asphalt on Thermal Ageing of EPDM Waterproof Sheets

作　　者：胡昕 

机构地区：[1]常熟市三恒建材有限责任公司,常熟江苏215500

出　　处：《化学建材》2005年第2期39-41,共3页Chemical Materials for Construction

摘　　要：采用热重分析和动态热机械分析方法研究了改性自粘沥青对三元乙丙防水片材热老化的影响。实验表明, 复合有改性自粘沥青层的三元乙丙片材热老化后,有机物含量明显增加,玻璃化转变温度明显提高而高弹态下的贮能模量明显下降。这表明老化后增塑剂和沥青质大量迁移到三元乙丙片材中,对材料的老化性能有不利的影响。Effects of modified self-adhesive asphalt on thermal ageing of EPDM waterproof sheets were studied by way of thermal gravity analysis and dynamic thermal mechanical analysis. Tests showed that after thermal aging of EPDM waterproof sheets with self-adhesive modified asphalt, organic content and glass transition temperature increased obviously whereas energy storage modulus in the state of high elasticity decreased markedly which indicated that mass transfer of plasticizer and asphalt to EPDM sheets after ageing would be harmful to the weather resistance of sheets.

关 键 词：自粘 三元乙丙防水片材 改性沥青 贮能 热老化 模量 复合 老化性能 增塑剂 玻璃化转变温度 

分 类 号：TU573[建筑科学—建筑技术科学] TU761.11