摘要
采用新型二胺 1,2 二氢 2 (4 氨基苯基 ) 4 [4 (4 氨基苯氧基 ) 苯基 ] 二氮杂萘 1 酮与对苯二甲酸、间苯二甲酸、萘二酸进行均聚或共聚 ,所得聚芳酰胺的Tg 均高于 30 0℃ ,且易溶于非质子极性溶剂中 ,聚合物的特性粘数为 1 2 6～ 1 5 1dL g(2 5℃ ,NMP) ,拉伸强度为 6 2～ 89MPa ,断裂伸长率为 5 %～ 9% ,拉伸模量为 2 2～ 2 9GPa ,电阻系数为 10 1 4 ～ 10 1
Aromatic polyamides are well known as one of the most important high\|performance polymers due to their excellent thermal stability and other outstanding properties.However,the present commercial polyamides are insoluble and do not melt below their decomposition temperature, which restrict their processing and applications.In the paper, 1,2\|dihydro\|2\|(4\|aminophenyl)\|4\|[4 (4 aminophenonxyl)phenyl] phthalazin 1 one,a novel diamine monomer containing the phthalazinone moiety was synthesized,and a series of polymers based on this monomer were synthesized with the Yamazaki method and studied.The novel diamine and different aromatic diacides were used to synthesize polyamides and co polyamides which were soluble in polar aprotic solvents such as DMAc,NMP and had inherent viscosity of 1\^26～1\^51 dL/g(25℃,NMP).The T g values of the polyamides were all above 300℃.The properties of polyamides and co polyamides were studied.The aromatic polyamide films were prepared by the thermal conventional method.The films had tensile strength of 62～89 MPa,elongation to break of 5%～9% and tensile modulus of 2\^2～2\^9 GPa.The order of the coefficient of electrical resistance was 10 14 ～10 16 .Their ultrafiltration membrane also had good separation properties.The rejection against PEG 12000 could be up to 99\^7% when the water flux was 175?kg/m\+2\5h.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2001年第5期576-579,共4页
Acta Polymerica Sinica
基金
国家自然科学基金资助项目 (基金号 5 94730 19)
关键词
聚芳酰胺
耐热性
可溶性
拉伸性能
电绝缘性能
合成
结构
Polyamides, Thermostable, Soluble, Mechanical property, Electrical property, UF membrane separation property
