摘要
以乙烯丙烯酸共聚物(EAA)、C9树脂、天然橡胶(NR)为主要原料制备阻尼材料,并应用于高阻尼橡胶隔震支座中,考察了EAA/NR质量比、C9树脂用量对阻尼材料的剪切模量、等效阻尼比和老化性能的影响。结果表明,EAA/NR质量比为15/85、C9树脂用量为20份,所制备的阻尼材料具有良好的阻尼性能和耐老化性能,制备的高阻尼橡胶隔震支座竖向刚度、水平刚度、等效阻尼比与设计值偏差分别为13.7%、9.9%和-1.3%,经过80℃×1 296 h老化后,竖向刚度、水平刚度、等效阻尼比变化率分别为12.2%、9.8%和-6.8%,支座性能满足寿命设计要求。
Damping materials were prepared with ethylene acrylic acid copolymer(EAA),C9 resin and natural rubber(NR),and high damping rubber bearings were prepared.The effects of EAA/NR ratio and dosage of C9 resin on shear modulus,equivalent damping ratio and aging properties of damping materials were investigated.The results show when EAA/NR ratio is 15/85 and dosage of C9 resin is 20 phr,the damping material has good damping performance and aging resistance.The deviation of vertical stiffness,horizontal stiffness and equivalent damping ratio from the design value is 13.7%,9.9% and -1.3%,respectively.After aging at 80 ℃ for 1 296 h,the change rate of vertical stiffness,horizontal stiffness and equivalent damping ratio is 12.2%,9.8% and -6.8%.
作者
赵雅婷
郭勇
ZHAO Ya-ting;GUO Yong(Hengshui China Railway Construction Engineering Rubber Co.,Ltd.,Hengshui 053000,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2021年第5期116-119,共4页
China Plastics Industry
基金
“三三三人才工程”人才培养资助项目(A201901117)。
关键词
乙烯丙烯酸共聚物
C9树脂
天然橡胶
等效阻尼比
耐老化性能
Ethylene Acrylic Acid Copolymer
C9 Resin
Natural Rubber
Equivalent Damping Ratio
Aging Resistance
