This paper aims to find parameters for the contribution of elements “\({-}\)F” and “\({=}\)C\({<}\)” on the dynamic liquid viscosity. The found contribution of the element “\({-}\)F” and “\(=\)C\({<}\)” for the dynamic liquid viscosity, 707.816 for \(\eta _{\mathrm {a }}\) and \(-2.3648\) for \(\eta _{\mathrm {b}}\) for element “\({-}\)F” and \(-919.101\) for \(\eta _{\mathrm {a }}\) and 2.21487 for \(\eta _{\mathrm {b}}\) for element “\(=\)C\({<}\)” can be used to predict the dynamic viscosity of hydrofluoroolefins (HFOs) and hydrochlorofluoroolefins (HCFOs). This paper also proposes a modified Joback’s method to improve the accuracy of the prediction of the dynamic liquid viscosity. The study of six potential refrigerants R-1224yd(Z), R-1233zd(E), R-1234yf, R-1234ze(E), R-1234ze(Z), and R-1336mzz(Z) shows that the proposed modified Joback’s method is more accurate than the original Joback’s method. The dynamic liquid viscosity of potential refrigerants R-1243zf and R-1225ye(Z) was determined with the modified Joback’s method.

本文旨在寻找参数“ \（{-} \） F”和“ \（{=} \） C \（{<} \） ”对动态液体粘度的贡献。发现元素“ \（{-} \） F”和“ \（= \） C \（{<} \） ”对动态液体粘度的贡献，对于\（\ eta _ {\ mathrm {a }} \）和\（-2.3648 \）代表\（\ eta _ {\ mathrm {b}} \）代表元素“ \（{-} \） F”，\（-919.101 \）代表\（\ eta _ {\ mathrm {a}} \）和2.21487对于\（\ eta _ {\ mathrm {b}} \）对于元素“ \（= \） C \（{<} \）可用于预测氢氟烯烃（HFO）和氢氯氟烯烃（HCFO）的动态粘度。本文还提出了一种改进的乔巴克方法，以提高动态液体粘度预测的准确性。对6种潜在制冷剂R-1224yd（Z），R-1233zd（E），R-1234yf，R-1234ze（E），R-1234ze（Z）和R-1336mzz（Z）的研究表明Joback的方法比原始的Joback的方法更准确。潜在的制冷剂R-1243zf和R-1225ye（Z）的动态液体粘度通过改进的乔巴克方法确定。