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1、?24?2?Vol.24 No.22 0 1 0?4?CHINESE JOURNAL OF MATERIALS RESEARCHApril 2 0 1 0?(?210016)?,?Pt?Pt?(DMA)?Kerner?,?,?,?,?,?,Kerner?TB333?1005-3093(2010)02-0196-05Dynamic Mechanical Properties of an Ionic Polymer MetalCompositesAN YiXIONG KeGU Na(College of Aerospace Engineering,Nanjing University of Aer
2、onautics and Astronautics,Nanjing 210016)*Supported by the National Natural Foundation of China No.90605003.Manuscript received Augest 17,2009;in revised form November 17,2009.*To whom correspondence should be addressed,Tel:(025)84891502,Email:ABSTRACTThe Ionic Polymer Metal Composites samples were
3、prepared by the electroless plating.The morphology was investigated by SEM firstly,and the formation pattern of Pt layer in the preparationprocess was discussed.The distributions of metal in the thickness direction were test by EDS.The DynamicMechanical Analysis(DMA)was used to test IPMC samples in
4、order to acquire some important dynamicmechanical properties of IPMC.A dynamic mechanical model was established based on Kerner model.Comparing model simulation results with experimental results demonstrates that this model is feasible toestimate the properties of IPMC.KEY WORDS composites,ionic pol
5、ymer metal composites,dynamic mechanical properties,gradientdistribution,Kerner model?(Ionic Polymer MetalComposites,IPMC)?,?1?,Nafion?2,?3,?4,5,?6,7?,?IPMC?810,?1116?Pt?IPMC?,?SEM?*?90605003?2009?8?17?;2009?11?17?:?,?IPMC?,?Kerner?,?1?,?IPMC?,?GEFC107?:?(?)?,?,?(?)?,?IPMC?IPMC?40?24 h,?8 mm20 mm?,?
6、Hitachi S3400N?IPMC?2?:?1972?:?1972?:?197?,?EMAX PV9100?IPMC?Pt?Diamond DMA?(?PERKINELMER?)?,?100?(?)200?,?2?/min,?200 mN,?,?0.1 Hz?0.5 Hz?1 Hz?5 Hz?10 Hz?2?2.1SEM?1?Pt?IPMC?17,?,?Pt?,?1IPMC?Fig.1 Typical surface and cross section micrographsof IPMC sample(a)surface,(b)cross section?,?520 m?,?,?Pt?S
7、EM?Pt?,?Pt?:?Pt(NH3)42+?,?;?,?BH4?,?,?Pt?;?,?,?H2?,?BH4?,?IPMC?,?M(z)18,?c(z)?c(z)=M(z)1 M(z)nafionmetal(2.1)?Pt?c?z?,IPMC?2?2?Fig.2 schematic diagram of gradient distributionmodel?c(z)=0.1490.9 z0.5675+3.135|z|5.748|z|2+3.499|z|30.55|z|0.90|z|0.55(2.2)2.2?3?IPMC?,?IPMC?,Tg?,IPMC?Tg?10?,?Tg?12?,?T T
8、g?,?;?Tg T Tm?,?4?1 Hz?IPMC?,?Pt?,IPMC?,198?24?198?24?198?24?70?40?80?110?,?,?,?Tg?,?Tg?127?,IPMC?Tg?101?,?Tg?,?18?46?Il-Seok Park16?DSC?,Pt?Nafion?Tg?2.3?2?,?,?Pt?,?Kerner?19;?,?Dickie20?IPMC?,?3?IPMC?Fig.3 Frequency-Temperature sweep test result for Base Film and IPMC(a)Base Film(b)IPMC?41 Hz?IPMC
9、?Fig.4 Comparison between base film and IPMC of dynamic mechanical properties in 1 Hz2?:?1992?:?1992?:?1992.3.1?Pt?,?EEm=1+ABf1Bf,?Em?,A?,f?,A=(75)/(810),B?,B=Ef/Em1Ef/Em+A,?,=1+mmaxmaxf+(1 max)m,m?,max?Kerner?2.3.2?,?,?Dickie?,?E?=E?m(A/C)E?m(B/C)?E?=E?m(A/C)+E?m(B/C),?E?m?E?m?E?E?,A?B?C?,?A=(1 c)(
10、1+c)(E?2m+E?2m)+(1 c)(+c)2(E?2f+E?2f)+(1c)2+(+c)(1+c)(E?mE?f+E?mE?f),B=(+1)2c(E?fE?mE?mE?f),C=(1+c)2(E?2m+E?2m)+(1 c)222(E?2f+E?2f)+2(1+c)(1 c)(E?fE?m+E?mE?f),?,=2(45)/(75),=(1+m)/(1+f),=(1+)/(1+m),?m?f?2.3.3?,IPMC?EIPMC=?11Ec(z)dz2=?10Ec(z)dz(2.3)?(2.2)?EIPMC=?10Ec(z)dz=?0.550E0dz+?0.90.55Ec(z)dz+?
11、10.9E0.149dz(2.4)2.3.4?5?,?E?m?E?m?,?2.1?5?,?(20?120?)?,?20?120?,?,?Kerner?2.1?Table 2.1 Model parameterModel parameterfmEf/GPaEm/MPaValue0.350.390.3171249?5E?E?Fig.5 Comparison between model and experiment of E?and E?200?24?200?24?200?24?3?Pt?,?Pt?520 m,?,?;?Pt?,?Kerner?,?1WEN Jianxun,LU Meili,LI J
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