化学学报 ›› 1955, Vol. 21 ›› Issue (1): 78-98. 上一篇    

论文

聚甲基丙烯酸甲酯的苯溶液粘度对切变速度的依赖性

钱人元, 史觀一   

  1. 中国科学院有机化学研究所
  • 投稿日期:1954-12-15 发布日期:2013-06-04

SHEAR DEPENDENCE OF THE VISCOSITY OF POLYMETHYLMETHACRYLATE IN BENZENE

CHIEN JEN-YUAN, SHIH KWAN-I   

  1. Institute of Organic Chemistry, Academia Sinica
  • Received:1954-12-15 Published:2013-06-04

作者用毛細管粘度計,在外加水柱壓力下,測定了聚甲基丙烯酸甲酯的四個經分級的試樣(M=4×105-5×106)和一個未經分級的試樣(M=5×106)在25°時苯溶液粘度的切變速度依賴性。在毛細管管壁的切變速度DR,變化在500-8000秒-1的範圍內。對實驗數據首先試用了冪函數形式的流變函數來處理,除M=4×105的一個試樣外,溶液粘度都有切變速度依賴性。作者也依照Weisenberg的方法,從實驗數據作出了流變曲線。

The effect of shear rate on the viscosity of polymethylmethacrylate in benzene was studied at 25℃ by means of an Ubbelohde dilution viscometer under external hydrostatic pressure. Four fractionated and one unfractionated samples having molecular weights ranging 4×105-5×106 were used for measurement.