医用液体石蜡的氧化改性

Oxidation modification process of medical liquid paraffin

对医用液体石蜡进行氧气氧化和空气氧化制备氧化蜡,并对氧化蜡进行乳化制备乳化蜡。考察了氧化温度、氧化时间、氧气流量和引发剂质量分数对氧化蜡密度的影响,利用红外光谱对产品进行表征。结果表明,氧气氧化比空气氧化反应制备氧化蜡的性能好;氧气氧化最佳反应条件为:氧化温度为130℃,氧化时间为6 h,氧气流量为0.15 m3/h,引发剂质量分数为0.05%;将氧化蜡进行乳化得到乳白色且含油量低的氧化蜡乳液,其密度符合医学照影用石蜡乳液的要求。

The oxidized wax is prepared by oxygen oxidation and air oxidation reaction of medical liquid paraffin. The emulsifying wax is also prepared by emulsifying the oxidized wax. The influences of oxidation temperature, oxidation time, oxygen amount and consumption of the initiator on oxidation process of medical liquid paraffin wax are investigated. The product is characterized by infrared spectroscopy. The results show that the best oxidation process conditions of the medical liquid paraffin wax are as follows：about 130℃ of oxidation temperature,6 h of oxidation time,0. 15 （m^3/h） of oxygen and O. 05 wt. % of the initiator. The milky white emulsion of oxidized wax with low oil content can be achieved. Its density can meet the requirements for medical paraffin emulsion.