Preparation of silicone oil emulsion and discussion of emulsification conditions

A silicone oil emulsion was prepared by using silicone oil with viscosity of 1 000 mPa·s as main material.The preparation method of silicone oil emulsion,HLB value and formulation of the emulsifier,as well as the time,temperature and pH used in the emulsification process were investigated and optimal conditions were identified.Emulsifier-in-oil method is adopted for the preparation with dosage of blended emulsifier of 6%.The emulsification takes time of 40 min at temperature of 70 ℃ and pH of about 6.The silicone oil content in the emulsion achieves 30% under these conditions.The appearance of the emulsion is uniform and with an exquisite texture.