CAJ | 학술논문

以3,3′,4,4′-联苯四甲酸二酐和4,4′-二氨基二苯醚为单体，以三聚氰胺为成孔剂，制得一种聚酰亚胺多孔薄膜，并对薄膜的微观结构、力学性能及介电常数等进行测试。结果表明：制备该聚酰亚胺多孔薄膜的成孔工艺简单可行，三聚氰胺成孔剂可用热水溶解的方法去除。多孔薄膜孔洞数量多，且分布比较均匀。薄膜的介电常数较低、力学性能良好、吸湿率较低。当三聚氰胺添加量分别为25%和40%时，聚酰亚胺多孔薄膜的介电常数分别为1.82和1.36，聚酰亚胺多孔薄膜的拉伸强度分别为86 MPa和74 MPa，断裂伸长率分别为15%和10%。
이3,3′,4,4′-련분사갑산이항화4,4′-이안기이분미위단체，이삼취청알위성공제，제득일충취선아알다공박막，병대박막적미관결구、역학성능급개전상수등진행측시。결과표명：제비해취선아알다공박막적성공공예간단가행，삼취청알성공제가용열수용해적방법거제。다공박막공동수량다，차분포비교균균。박막적개전상수교저、역학성능량호、흡습솔교저。당삼취청알첨가량분별위25%화40%시，취선아알다공박막적개전상수분별위1.82화1.36，취선아알다공박막적랍신강도분별위86 MPa화74 MPa，단렬신장솔분별위15%화10%。
A polyimide porous film was prepared by using 3,3’,4,4’-biphenyltetracarboxylic dianhydride and 4,4’-diaminodiphenyl ether as monomer, melamine as pore-forming agent, and its microstructure, mechanical properties, and dielectric constant were tested. The results show that the pore-forming process of the polyimide porous film is simple and feasible, and the melamine can be dissolved by hot water. The porous films have a great number of pores and their distribution is uniform. And the porous poly-imide films have low dielectric constant, good mechnical properties, and low water absorption. When the melamine addition content is 25% and 40%, the dielectric constant of the porous polyimide film is 1.82 and 1.36, the tensile strength is 86 MPa and 74 MPa, and the elongation at break is 15% and 10%, respectively.