摘要
制备了以聚氯乙烯(PVC)糊树脂为基体的磁流变弹性体(MRE);研究了其静态力学性能、动态力学性能、SEM形貌和热降解性能。实验结果表明:PVC基磁流变弹性体的断裂强度随铁粉含量呈现出先上升后下降的趋势,磁致模量、相对磁流变效应和损耗因子均随铁粉含量的增加而增大,损耗因子几乎不依赖于磁场强度。当铁粉质量分数为80%时,最大磁致模量为1.06 MPa,损耗因子最大为0.35。TGA结果说明:随着铁粉含量的增加,PVC基MRE的热降解趋势增强。
Magneto-rheological elastomers based on PVC paste were prepared and the properties inclu- ding static mechanical properties, dynamic mechanical properties, SEM morphology and thermal performance were studied. The experiment results showed that the fracture strength of the MRE firstly increased and then decreased with the iron powder content. But the magnetic induced modulus, relative MR effect and loss factor are monotonously augmented with the iron powder loading. Loss factor was almost independent of magnetic field strength. When the mass fraction of carbonyl iron was 80%, the maximum magnetic induced modulus and loss factor were 1.06 MPa and O. 35 respectively. The results of TGA illustrated that the trend of thermal degradation of MRE based on PVC paste strengthens with increasing the iron content.
出处
《塑料工业》
CAS
CSCD
北大核心
2012年第3期92-96,共5页
China Plastics Industry
基金
国家重点实验室专项经费资助
重庆大学光电技术及系统教育部重点实验室访问学者基金资助
关键词
磁流变弹性体
PVC
磁致模量
热降解
Magneto-rheological Elastomers
PVC
Magnetic Induced Modulus
Thermal Degradation
