在制得可溶性聚苯胺基础上，研究了聚苯胺与聚苯甲酰胺在二甲基乙酰胺（含３．５％ＬｉＣｌ）中的共混溶液行为并绘出其三元相图。研制了不同配比的聚苯胺／聚苯甲酰胺共混膜。测试结果表明，在聚苯胺中混入２０％ＰＢＡ后其拉伸强度可增加２～３倍且其导电率可达７．５Ｓ／ｃｍ。考察了混合比对共混薄膜的导电率和力学性能的影响．ＳＥＭ及Ｘ－衍射结果表明聚苯胺／聚对苯甲酰胺共混物存在着明显的微观相分离． Based on the preparation of soluble polyaniline, the behavior of polyaniline and polybenzamide solution in dimethylacetamide (containing 3.5% LiCl) was studied and the ternary phase diagram was drawn. Different proportions of polyaniline / polybenzamide blend membranes were developed. The test results show that the tensile strength of polyaniline mixed with 20% PBA can be increased by 2 to 3 times and its conductivity can reach 7.5S / cm. The effects of mixing ratio on the electrical conductivity and mechanical properties of blends were investigated. The SEM and X-ray diffraction results show that there is a clear microscopic phase separation of polyaniline / poly (p-benzamide) blends.