摘要
研究了二苯酮四酸二酐-二异氰酸甲苯酯-二异氰酸二苯甲烷酯共聚聚酰亚胺(P84)的N-甲基吡咯烷酮(NMP)溶液的流变性能。结果表明:P84质量分数为17%～21%的NMP溶液为切力变稀流体,在温度为40～60℃时,其非牛顿指数为0.80～0.98,随着P84浓度增加或温度降低,其溶液的非牛顿性增加;在低剪切速率下,P84浓度增加使纺丝溶液的粘流活化能增加;随着P84浓度的增加或温度的降低,纺丝溶液的结构粘度指数、储能模量、损耗模量、复数粘度均增大。
The rheological behavior of lic dianhydride-tolyene diisocyanate-diphenylmethane diisocyanate co-polyimide（P84） solution was studied using N-methyl pyrrolidone （NMP） as a solvent. The results showed that the NMP solution containing 17% -21% P84 by mass fraction was a shear-thinning fluid with the non-Newtonian index of 0.80 -0.98 from 40℃ to 60℃. The non-Newtonian behavior of the solution increased while increasing I）8d concentration and decreasing the temperature. The viscous flow activation energy of the spinning solution increased while increasing P84 concentration at low shearing rate. The structural viscosity index, storage modulus, loss modulus and complex viscosity of the spinning solution increased while increasing the P84 concentration and decreasing the temperature.
出处
《合成纤维工业》
CAS
CSCD
北大核心
2011年第1期19-22,共4页
China Synthetic Fiber Industry
关键词
二苯酮四酸二酐-二异氰酸甲苯酯-二异氰酸二苯甲烷酯
共聚聚酰亚胺
N-甲基吡咯烷酮
纺丝
benzophenonetetracarboxylic dianhydride-tolyene diisocyanate-diphenylmethane diisocyanate
co-polyimide
N- methyl pyrrolidone
spinning solution
rheological behavior
