基于耗尽势的密度泛函理论研究了AaDd型氢键流体中胶体粒子间的耗尽势.针对胶体稀溶液,通过计算在不同条件下两个胶体粒子间的耗尽势和耗尽力,进一步分析了氢键流体中相关因素对二者的影响.结果表明,胶体粒子与流体分子的尺寸比率、氢键流体的体相密度、氢键键能、质子给体和受体数目以及胶体粒子与流体之间的弱相互作用等因素均可对胶体粒子间耗尽势产生显著影响. The depletion potential of colloidal particles in AaDd hydrogen-bonding fluid was studied based on the depletion potential density functional theory.For the colloidal dilute solution, by calculating the depletion potential and the depletion force between two colloidal particles under different conditions, The results show that the size ratio of the colloidal particles to the fluid molecules, the bulk density of the hydrogen-bonding fluid, the hydrogen bond energy, the number of proton donors and acceptors, and the number of colloidal particles And the weak interaction between the fluid and other factors can have a significant impact on the depletion potential between colloidal particles.