盐雾老化对风电叶片用环氧树脂性能的影响  

EFFECT OF SALT SPRAY AGING ON PROPERTIES OF EPOXY RESIN FOR WIND TURBINE BLADE

作　　者：卢敏[1] 唐先贺[2] 冯学斌[2] 杨金水[3] 刘魁 雷志敏 

机构地区：[1]湖南工业大学包装新材料与技术重点实验室,湖南株洲412007 [2]株洲时代新材料科技股份有限公司,湖南株洲412008 [3]国防科技大学航天与材料工程学院,长沙410073

出　　处：《玻璃钢／复合材料》2012年第1期44-47,共4页Fiber Reinforced Plastics/Composites

基　　金：国家863计划资助项目(2007AA03Z563);湖南省重大科技专项资助项目(2009FJ1002)

摘　　要：采用差示扫描量热(Differential Scanning Calorimetry,简称DSC)、红外光谱(Fourier transform infrared spectroscopy,简称FTIR)、静态力学性能测试等分析方法对复合材料风电叶片用环氧树脂浇铸体老化前后的性能进行分析,通过对比盐雾老化前后树脂浇铸体的玻璃化转变温度(Glass transition temperature,简称Tg)和力学性能,研究了环氧树脂浇铸体的老化机理。结果表明,树脂浇铸体的Tg随着老化时间的增加呈现先上升后下降的趋势,老化20天时Tg由未老化前的55℃升高到62℃,20天后开始下降,到50天时下降为51℃,比未老化的下降了4℃。随着老化时间的增加,树脂浇铸体力学强度和模量均呈下降趋势,50天盐雾老化后树脂浇铸体的弯曲强度和拉伸强度分别下降了13%和12%,而弹性模量和弯曲模量分别下降了16%和9%。The DSC,FTIR and static mechanic experiment were employed to analyze the aging behavior of epoxy resin after exposed to salt-spray.Aging mechanisms were investigated by changes of glass transition temperature(Tg) and mechanical properties.The results showed that the glass transition temperature(Tg) of EP casts increased first and then decreased with the aging time,it reached to 62℃ when exposd to salt-spray environment for 20 day,7℃ higher then unaginged,decreased after 20 days salt-spray aging,it droped to 51℃at the 50 day,4℃ lower than unaginged.The mechanical properties decrease with the aging time,the bending strength and tensile strength decreased by 13% and 12% respectively after salt spray aging for 50 days,elastic modulus and bend modulus drop by 16% and 9%.

关 键 词：环氧树脂 盐雾老化 力学性能 玻璃化转变温度 

分 类 号：TQ32[化学工程—合成树脂塑料工业]