CAJ | 학술논문

采用乌氏黏度仪,在常压和 293.15~323.15 K 温度范围内测定了均三甲苯与二异丁基甲醇混合溶剂以及两种纯溶剂的黏度,计算了不同温度和组成下混合溶剂的超额黏度.用 Redlich-Kister 方程对超额黏度进行了关联;用 Andrade 方程、UNIFA-VISCO 模型以及 Grunberg-Nissan 模型对黏度进行了关联与预测.结果表明,混合溶剂的黏度随温度升高和均三甲苯含量增加而减小.超额黏度均为负值,且随均三甲苯含量增加呈 U 形变化,约在均三甲苯摩尔分数为 0.3 时达到最低.Grunberg-Nissan 模型对黏度数据的关联和预测性最好,预测值与实测值的最大和平均相对偏差分别为 12.96%和 5.74%.
채용오씨점도의,재상압화 293.15~323.15 K 온도범위내측정료균삼갑분여이이정기갑순혼합용제이급량충순용제적점도,계산료불동온도화조성하혼합용제적초액점도.용 Redlich-Kister 방정대초액점도진행료관련;용 Andrade 방정、UNIFA-VISCO 모형이급 Grunberg-Nissan 모형대점도진행료관련여예측.결과표명,혼합용제적점도수온도승고화균삼갑분함량증가이감소.초액점도균위부치,차수균삼갑분함량증가정 U 형변화,약재균삼갑분마이분수위 0.3 시체도최저.Grunberg-Nissan 모형대점도수거적관련화예측성최호,예측치여실측치적최대화평균상대편차분별위 12.96%화 5.74%.
The viscosities of mixed solvents consisted of 1,3,5-trimethylbenzene (TMB) and diisobutylcarbinol (DIBC) were determined at temperature ranging from 293.15 to 323.15 K and atmospheric pressure for the whole range of compositions by using viscometer. The excess molar viscosities of the mixed solvents were calculated and correlated by Redlich-Kister equation. The viscosities of the mixtures were correlated and predicted by Andrade equation, UNIFA-VISCO model, and Grunberg-Nissan model. The viscosities of the mixtures decreased with the increase of temperature and molar fraction of TMB. The excess viscosities showed negative deviations from ideal behavior, gave U-shaped curves as the molar fraction of TMB (x1) increased, and reached the minimum values at ca x1=0.3. The Grunberg-Nissan model was quite reasonable with the maximum and average relative errors between predicted and experimental data of 12.96% and 5.74%.