Page 105 - 《精细化工》2021年第3期

第 38 卷第 3 期 精 细 化 工 Vol.38, No.3
202 1 年 3 月 FINE CHEMICALS Mar. 2021

功能材料
油基纳米氧化锌分散浆的制备及其流变性能

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倪璟怡 ，王 优 ，左士祥 ，刘文杰 ，李霞章 ，姚 超 1,2*
（1. 常州大学 石油化工学院，江苏 常州 213164；2. 常州大学 盱眙凹土研发中心，江苏 盱眙 211700）
摘要：选用硬脂酸钠对 ZnO 进行表面湿法改性，以环十五硅氧烷硅油为溶剂，PEG-10 聚二甲基硅氧烷为分散
剂，通过机械球磨法制备纳米 ZnO 分散浆。利用水接触角、热重、TEM 和 FTIR 对纳米 ZnO 粉体进行表征。结
果表明，硬脂酸钠改性后，粉体具有疏水性，且硬脂酸钠最佳包覆量为 6%（以 ZnO 的质量计，下同）。硬脂酸
钠包覆量为 6%的疏水性纳米 ZnO 粉体，包覆层厚度约为 2 nm，此时水接触角最大为 145.4°。模拟防晒乳液的
防晒性能测试中，纳米 ZnO 分散浆的紫外屏蔽性能显著优于粉体。流变特性测试表明，分散浆为假塑性流体，
流动曲线符合 Ostwald-de Wale 幂律方程，具有剪切稀化特性；分散浆具有黏度低、触变性小、储存稳定性高的
特点；温度升高，分散浆黏度降低，配方生产中分散浆黏度对温度的敏感程度较小。
关键词：氧化锌；分散浆；紫外屏蔽；防晒指数；流变特性；功能材料
中图分类号：TQ658；TB34 文献标识码：A 文章编号：1003-5214 (2021) 03-0525-07

Preparation and rheological properties of oil-based

nano zinc oxide dispersion slurry

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NI Jingyi , WANG You , ZUO Shixiang , LIU Wenjie , LI Xiazhang , YAO Chao 1,2*
（1. School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China; 2. R&D Center
of Xuyi Attapulgite, Changzhou University, Xuyi 211700, Jiangsu, China）
Abstract: Nano ZnO powders were modified with sodium stearate by surface wet method. Then, nano-ZnO
dispersion slurry was prepared by mechanical ball milling using cyclopentadecane silicone oil as solvent
and PEG-10 polydimethylsiloxane as dispersant. The prepared powders were characterized by water contact
angle, TG, TEM and FTIR. The results showed that the powders had hydrophobicity after sodium stearate
modification. The optimal coating amount of sodium stearate was 6% (based on the mass of ZnO, the same
below). The coating thickness of the hydrophobic nano ZnO powders with 6% sodium stearate was about 2
nm and the maximum water contact angle was 145.4°. In the sunscreen performance test of simulated
sunscreen emulsion, the UV shielding performance of nano-ZnO dispersion slurry was better than that of
ZnO powders. The rheological study indicated that the dispersion slurry was a pseudoplastic fluid and its
flow curve obeyed the Ostwald-de Wale power law equation, and had shear thinning characteristics. The
dispersed slurry had the characteristics of low viscosity, small thixotropy and high storage stability. When
the temperature increased, the viscosity of the dispersion slurry decreased, indicating that the viscosity of
dispersed slurry is less sensitive to temperature in formula production.
Key words: ZnO; dispersion slurry; sun protection index; ultraviolet shielding; rheology; functional
materials

近年来，大气污染严重，臭氧层变薄，由于过 外屏蔽剂分为无机紫外阻隔剂和有机紫外吸收剂两
量紫外线照射引发的红肿、老化等皮肤性疾病显著 大类。与无机紫外阻隔剂相比，紫外吸收剂经皮肤
增加 [1-2] ，人们已经意识到防晒的重要性。通常，紫 组织吸收后，在皮肤表面发生化学反应，对皮肤有

收稿日期：2020-07-31; 定用日期：2020-10-10; DOI: 10.13550/j.jxhg.20200710
基金项目：江苏省重点研发计划-产业前瞻与共性关键技术（BE2017064，BE2018100）；淮安市自然科学研究计划（HAB201952）
作者简介：倪璟怡（1996—），女，硕士生，E-mail：2287382571@qq.com。联系人：姚 超（1969—），男，博士，教授，E-mail：
yaochao420@163.com。