| 摘要: |
| 为了探寻性能稳定、可重复进行冰浆制备的微乳液，本文以液体石蜡为油相，复配脂肪醇聚氧乙烯醚(AEO-9)与油酸钠为表面活性剂,己醇为助表面活性剂制备微乳液,并对所制备的微乳液进行稳定性测试及冰浆制作。结果表明:AEO-9/油酸钠质量比为7 ∶3，剂油质量比为,2∶3 时制备的微乳液为Ｗ/Ｏ型微乳液，本文测得该乳液平均粒径为64.93nm,并获得了拟三元相图；电导和温度试验表明水含量小于36.9时可制备澄清透明的Ｗ/ Ｏ 型微乳液，微乳液在0.2~30℃之间可保持稳定不分层；离心和贮藏试验表明该微乳液稳定性良好，在－3~30 ℃之间的300次冷热循环试验后微乳液仍保持稳定，可在蓄冷过程中重复使用；该微乳液体系冰浆结晶点为－0.8℃，过冷度仅为0.2 ℃，克服了传统冰浆制取过程中过冷度大和结晶点低的缺陷，制备的冰浆未粘附壁面，冰浆流动性良好。 |
| 关键词: 冰浆 蓄冷 微乳液 表面活性剂 相变 |
| DOI： |
| Received:February 05, 2020Revised:May 24, 2020 |
| 基金项目:江苏省高校自然科学研究重大项目(16KJA480001),江苏省自然科学基金项目(BK20170382),住建部科技项目(2018-k1-011),江苏省研究生科研创新计划项目(SJCX18_0873)资助。 |
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| Preparation and Performance of New Paraffin Microemulsion and Ice Slurry |
|
Luu Ling, Sun Zhigao, Zhou Linchen, Wang Xiaochun, Li Juan, Li Cuimin, Huang Haifeng
|
| (School of Environmental Science and Engineering, Suzhou University of Science and Technology) |
| Abstract: |
| To explore a microemulsion with stable performance and repeatable ice slurry preparation, liquid paraffin was used as the oil phase, compounded with fatty alcohol polyoxyethylene ether (AEO-9), sodium oleate as the surfactant, and hexanol as the surface agent. The active agent was used to prepare a microemulsion, and a stability test of the prepared microemulsion was conducted and an ice slurry was formed. The results of conductivity and temperature experiments indicate that when the water content is less than 36.9%, a clear and transparent W/O type microemulsion can be prepared, and the microemulsion can remain stable in the temperature range of 0.2–30 ℃. Centrifugation tests and storage tests suggest that the microemulsion has good stability. The microemulsion remained stable after 300 thermal cycles between ?3℃and 30 ℃, which demonstrates the reusability of the microemulsion for cold storage. The ice slurry was prepared using a microemulsion. The microemulsion system has a crystallization point of ?0.8 ℃ and a subcooling degree of 0.2℃, which can overcome the defects of a large degree of subcooling and low crystallization point in the traditional ice slurry preparation. Meanwhile, the ice crystals do not adhere to the wall surface, and the fluidity of the ice slurry is suitable. |
| Key words: ice slurry cold storage microemulsion surfactant phase change |
