Two organic small molecules were used as assist-dissolving agents to increase the solubility of some dyes in ScCO₂. Theoretical calculations showed that nicotinamide was better than benzoic acid. AIM and IGMH methods confirmed the hydrogen bonding and π-π stacking interactions between the agents and dyes. The mixtures of agents and dyes were made by the physical grinding and mixing method, and their solubilities and melting points were tested. The results indicated that the agents reduced the intermolecular forces in the dye crystals, thus enhancing the dye solubility in ScCO₂. The dyeing experiment also proved the improvement of dyeing performance by the agents. The dye uptake increased from 20%∼30% to 60%∼70%, and the color intensity of the fibers improved. The best operating parameters were a temperature of 130 ℃ and a pressure of 28 MPa. The hue and color fastness of the dyed products were similar to those dyed with pure dyes.

采用两种有机小分子作为助溶剂来提高某些染料在ScCO _{2中的溶解度}。理论计算表明烟酰胺优于苯甲酸。AIM 和 IGMH 方法证实了试剂和染料之间的氢键和 π-π 堆积相互作用。采用物理研磨混合的方法制备药剂和染料的混合物，并测试它们的溶解度和熔点。结果表明，该试剂降低了染料晶体中的分子间力，从而提高了染料在ScCO _{2中的溶解度}。染色实验也证明了该试剂对染色性能的改善。上染率由20%～30%提高到60%～70%，纤维的着色强度提高。最佳操作参数为温度130℃、压力28MPa。染色产品的色相和色牢度与纯染料染色的产品相似。