在低压力下含高氯酸钠的互穿网络高分子固体电解质的电导行为

EFFECT OF PRESSURE ON CONDUCTIVITY IN EPOXY RESIN POLYETHYLENE GLYCOL INTERPENETRATING POLYMER NETWORK CONTAINING SODIUM PERCHLORATE SALT

研究了含ＮａＣｌＯ４的ＰＥＯ４００与环氧树脂所形成的完全无定形的互穿聚合物网络（ＩＰＮ）固体电解质的电导率与压力和温度的关系．在室温至７０℃和压力０—４０ＭＰａ的范围内，这类ＩＰＮ的电导率在６ＭＰａ左右出现极大值，超过６ＭＰａ以后，电导率随压力的增加而减小．计算了在不同压力下的激活体积．与含ＬｉＣｌＯ４的同类ＩＰＮ体系进行了比较．从离子偶极作用原理出发对结果进行了讨论．实验表明离子通道畸变受运动离子的大小影响．离子半径越小，对离子通道影响越大，因而电导率改变也大．

onic conductivity of epoxy resin -polyethylene glycol (PEO400) interpenetrating polymer netword(IPN) containing sodium perchlorate salt betWeen 15-70 ℃ under pressure from 0 to 40 MPa were investigated. The conductivity maximum exists near 6 MPa on conductivity versus pressure curve for there amorphous films. Over 6 MPa pressure the conductivities decreased further with increasing pressure. The effect of pressure on the achvation volume is determined. These were compared with those of IPN containing lithium perchlorate. For pressure dependence of conductivity and activation volume, a microscopic explanation was obtained by considering the iondipole interaction and the resuits indicated the ion micropassage in polymer ion conductor was effeCted by mobile ion size. The less ion radius is, the more effeCtive on passages is and the greater conductivity changes are.