The best molecular structure of the ester ether forther has been designed through the Adding Method by use of the Hydrophile-Lypophile Balanc value(HLB value) of the surfactants.

• 采用表面活性剂“亲水-亲油平衡值”即HLB值的“加合法”计算公式，设计出醚酯类起泡剂的最佳分子结构。