摘要
用压膜法测定腈纶纺丝原液的固体含量(P)与NaSCN含量(w)并与拉丝法进行比较。结果表明：压膜法测定腈纶纺丝原液的P和w的准确度和精密度较拉丝法的高,且分析时间较短；压膜法测定P和w的相对标准偏差分别为0．136%,0．169%,而拉丝法测定分别为1．218%,1．032%；压膜法测定的纺丝原液的P与粘度相对应,且与粘度的对数呈线性关系,而拉丝法则没有。
The pressed film method was used to measure the solid content （ P ） and sodium thiocyanate content （ ω ） in PAN spinning dope and was compared with extraction method. The results showed that the pressed film method had higher accuracy and precision in shorter time; the relative standard deviations of P and w measurement were 0. 136% and 0. 169% by pressed film method and 1. 218% and 1. 032% by extraction method, respectively. The P value measured by pressed film method was in correspondence with viscosity and showed linear relationship with logarithmic viscosity number which was not found in extraction method.
出处
《合成纤维工业》
CAS
CSCD
北大核心
2006年第4期63-65,共3页
China Synthetic Fiber Industry
关键词
聚丙烯腈
纺丝原液
压膜法
拉丝法
固体含量
硫氰酸钠
粘度
polyacrylonitrile
spinning dope
pressed film method
extraction method
solid content
sodium thiocyanate
viscosity
