复合填料和硫化温度对PEMFC垫片力学性能的影响

Effect of composite filler and vulcanization temperature on the mechanical properties of PEMFC gasket

填料和硫化温度对质子交换膜燃料电池(PEMFC)硅橡胶弹性体垫片材料的性能有重要影响。通过试验研究总质量份数一定的情况下,不同配比的CaCO_(3)和MgO对垫片材料性能的影响,以及一段硫化温度对垫片材料性能的影响。结果表明:当m(CaCO_(3))∶m(MgO)=4∶6时,垫片材料具有较好的拉伸和压缩性能,垫片材料的压缩永久变形和压缩应力松弛分别比最大值下降13.8%和14%;配方和硫化压力一定时,当硫化温度=160℃时,垫片材料具有较好的拉伸和压缩性能,垫片材料的压缩永久变形和压缩应力松弛分别比最大值下降25.4%和13.5%。

Filler and vulcanization temperature have an important influence on the performance of proton exchange membrane fuel cell(PEMFC) silicone rubber elastomer gasket material.The effect of different ratio of CaCO_(3)and MgO on the properties of gasket material and the effect of vulcanization temperature on the properties of gasket material were studied by experimental method.The results show that when m(CaCO_(3)):m(MgO) =4∶6,the gasket material has better tensile and compressive properties,and the compression set and compression stress relaxation of the gasket material decrease by 13.8% and 14% compared with the maximum values,respectively.When the formula and vulcanization pressure are constant,and the vulcanization temperature is 160 ℃,the gasket material has better tensile and compression properties,and the compression set and compression stress relaxation of the gasket material decrease by 25.4% and 13.5% compared with the maximum values,respectively.