Page 154 - 《精细化工》2019年第11期

第 36 卷第 11 期 精 细 化 工 Vol.36, No.11
2019 年 11 月 FINE CHEMICALS Nov. 2019

建筑用化学品
水性涂料用苯丙树脂的制备及胶膜性能

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成航航 ，沈一丁 ，马国艳 ，杨 凯 ，侯旭明
（1. 陕西科技大学 陕西省轻化工助剂重点实验室，陕西 西安 710021；2. 西安石油大学 化学化工学院，
陕西 西安 710065）
摘要：以甲基丙烯酸（MAA）为亲水单体、甲基丙烯酸羟丙酯（HPMA）为交联单体，与苯乙烯（St）、甲基丙
烯酸甲酯（MMA）、丙烯酸丁酯（BA）等通过半连续及转相乳液聚合法，制备了具有核壳结构的水性苯丙水分
散体乳液，进一步将乳液制备成苯丙树脂胶膜。探讨了 MAA 核壳质量比，MAA、St、HPMA 等单体用量对水
性苯丙树脂水分散体乳液性能及胶膜性能的影响，并利用傅里叶变换红外光谱仪（FTIR）及热失重分析仪（TGA）
对苯丙树脂胶膜的结构及热稳定性进行了表征，利用激光粒径散射仪（DLS）及透射电镜（TEM）对苯丙树脂
乳液乳胶粒的大小及形貌进行了表征。结果表明：当 MAA 在核壳中分配质量比为 2∶8、MAA 用量为 7%（以
单体总质量为基准，下同）、HPMA 用量为 10%、St 与 MMA 质量比为 3∶1 时，得到共聚物乳液的粒径为 259.65 nm，
黏度为 349.1 mPas，胶膜耐水时间为 90 h，硬度为 72.4，拉伸强度为 1.422 MPa，断裂伸长率为 59.355%；水
性苯丙水分散体附着力为 1 级。
关键词：苯丙乳液；水性涂料；胶膜性能；核壳结构；建筑用化学品
中图分类号：TQ325.7 文献标识码：A 文章编号：1003-5214 (2019) 11-2302-07

Preparation of a Styrene-acrylic Emulsion for Waterborne
Paint and Its Film Properties

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CHENG Hang-hang , SHEN Yi-ding , MA Guo-yan , YANG Kai , HOU Xu-ming
（1. Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science & Technology, Xi'an 710021,
Shaanxi, China; 2. College of Chemistry & Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, Shaanxi, China）
Abstract: A waterborne styrene-acrylic dispersion emulsion with core-shell structure was prepared by
semi-continuous solution and phase inversion emulsion polymerization using methacrylic acid (MAA) as
hydrophilic monomer, hydroxypropyl methacrylate (HPMA) as crosslinking monomer, styrene (St), methyl
methacrylate (MMA) and butyl acrylate (BA) as monomers. Subsequently, the styrene-acrylic emulsion
film was further prepared. The effects of the MAA core-shell mass ratio, the amount of monomers such as
MAA, St and HPMA on the properties of waterborne styrene-acrylic dispersion emulsion and film were
discussed. The structure and thermal stability of the emulsion film were characterized by FTIR and TGA.
The size and morphology of the styrene-acrylic emulsion particles were characterized by DLS and TEM.
The results showed that when the mass ratio of MAA in the core shell was 2∶8, the mass fraction of MAA
was 7% (based on the mass of all monomers, the same below), the mass fraction of HPMA was 10%, and
the mass ratio of St to MMA was 3∶1, the prepared copolymer emulsion had excellent properties, with a
particle size of 259.65 nm, viscosity of 349.1 mPas, filming hardness of 72.4, tensile strength of 1.422
MPa, and elongation at break 59.355%. The film water resistance time could approach 90 h, and the
adhesion level was 1.
Key words: styrene-acrylic emulsion; waterborne paint; film properties; core-shell structure; building
chemicals

收稿日期：2019-03-18; 定用日期：2019-05-08; DOI: 10.13550/j.jxhg.20190206
基金项目：陕西省教育厅重点实验室科研计划项目（2010JS058）
作者简介：成航航（1994—），男，硕士生，E-mail：857207167@qq.com。联系人：沈一丁（1957—），男，教授，博士生导师，E-mail：
ydshen@sust.edu.cn。