二元乳化剂对半合成切削液乳液性能的影响研究

Study on Effects of Binary Emulsifier on the Emulsion Properties of the Semi-Synthetic Cutting Fluids

文章研究了聚氧乙烯失水山梨醇单油酸酯(吐温80)和脂肪醇聚氧乙烯醚二元乳化剂对半合成切削液乳液性能的影响,通过粒度分析仪、表面张力仪、泡沫测定仪,分别表征了60℃条件下储存168 h前后,不同亲水亲油平衡值(HLB值)稀释液的粒径、表面张力和泡沫高度,探究了二元乳化剂与乳化液的粒径、表面张力和泡沫性之间的关系。试验结果表明:当HLB值为13.0时,半合成切削液的稀释液表现出最佳的乳液稳定性;当HLB值为13.0~13.5时,新稀释液和老化液的表面张力达到最大值,且新稀释液的表面张力高于老化液的表面张力;新稀释液和老化液的泡沫体积随着HLB值呈现先升高后降低的趋势,在HLB值为13.5~14.5时泡沫体积达到最大值。

In this paper,the effects of the binary emulsifier of the polyoxyethylene sorbitan monooleate(Tween 80)and alcohol ethoxylate on the emulsion properties of the semi-synthetic cutting fluids were studied.The particle size analy-zer,surface tension instrument and foam meter were used to characterize the particle size,surface tension and foam height of diluent with at different(hydrophile-lipophile)balance(HLB)value before and after storage for 168 h at 60 C.The experimental results show that when the HLB value is 13.0,the diluent of semi-synthetic cutting fluid shows the best emulsion stability.When the HLB value is 13.0~13.5,the surface tension of both new diluent and aging fluid rea-ches a maximum,and the surface tension of the former is larger than that of the latter.The foam volume of both new dil-uent and aging fluid increases firstly and decreases later with increase of the HLB value,and it reaches a maximum when theHLBvalueis13.5~14.5.