高固含量石蜡纳米乳液的制备

以58#石蜡为原料,采用司潘-60和吐温-60为主乳化剂、油酸钾和吐温-80为助乳化剂制备了一种高固含量石蜡纳米乳液,利用单因素法研究了配方组成、乳化时间、乳化温度和搅拌转速对乳液粒径大小及其分布、乳液流动性和黏度的影响,并确定了适宜的制备条件。实验结果表明,高固含量石蜡纳米乳液的适宜制备条件为58^#石蜡、乳化水、司潘-60、吐温-60、油酸钾和吐温-80的质量比为23.0∶30.0∶2.8∶4.2∶0.6∶1.2,乳化时间为10min,乳化温度为100℃,搅拌转速为1400r/min。在该条件下制备的高固含量石蜡纳米乳液的固含量和平均粒径分别为53.21%(w)和0.247μm,且稳定性高、分散性好、流动性强。

Preparation of a high solid content paraffin nanoemulsion

A high solid content paraffin nanoemulsion was prepared with 58#paraffin as the raw material,Span-60 and Tween-60 as the primary emulsifier,and Tween-80 and potassium oleate as the co-emulsifier.The influences of ingredient content,emulsifying time,emulsifying temperature and stirring speed on the particle size and its distribution,fluidity and viscosity of the paraffin nanoemulsion were investigated by single factor method.The optimal conditions were determined to be as follows:m(58^#paraffin)∶m(water)∶m(Span-60)∶m(Tween-60)∶m(potassium oleate)∶m(Tween-80)23.0∶30.0∶2.8∶4.2∶0.6∶1.2,emulsifying time 10 min,emulsifying temperature 100℃and stirring speed 1400 r/min.Under the optimal conditions,solid content and mean particle size of the paraffin nanoemulsion were 53.21%(w)and 0.247μm respectively and the nanoemulsion showed excellent stability,dispersity and fluidity.