Page 194 - 《精细化工》2020年第1期

第 37 卷第 1 期 精 细 化 工 Vol.37, No.1
202 0 年 1 月 FINE CHEMICALS Jan. 2020

建筑用化学品
磷酸酯化苯丙共聚物乳液的合成及防锈性能

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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、苯乙烯（St）和甲基丙
烯酸甲酯（MMA）为硬单体、丙烯酸丁酯（BA）为软单体、2-羟乙基甲基丙烯酸酯磷酸酯（PM-2）为功能单
体、十二硫醇为链段调节剂，采用半连续种子乳液聚合法，制备了具有核壳结构的磷酸酯化苯丙防锈乳液
（PM-2-SP）。讨论了 PM-2 用量对 PM-2-SP 乳液稳定性、胶膜耐水性及漆膜防锈性能的影响。利用 DLS、TEM
及 AFM 对 PM-2-SP 乳液乳胶粒的大小及形貌进行了表征，采用盐水喷雾试验机对漆膜的防腐性进行了测试。
结果表明：当 PM-2 用量为 4%（以总单体质量为基准，下同）时，PM-2-SP 乳液粒径为 135.7 nm，PDI 为 0.150，
且具有核壳结构，稳定性能较好；胶膜表面光滑、致密，且有优异的耐水性能；PM-2-SP 漆膜相比纯苯丙漆膜，
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腐蚀电位上升率为 47.16%，可达到–0.391 V，腐蚀电流下降率为 94.76%，可达到 1.95×10 A/cm 。耐盐雾实验
证明：核壳结构的苯丙乳液相比均聚的苯丙乳液与金属螯合密度更大，能够展现出优异的防锈性能，耐盐雾
时间达到 144 h。
关键词：羟基磷酸酯；苯丙乳液；防锈涂料；性能测试；建筑用化学品
中图分类号：TG174.42 文献标识码：A 文章编号：1003-5214 (2020) 01-0180-09

Synthesis and antirust properties of phosphate esterified

styrene-acrylic copolymer emulsion

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Cheng Hanghang , Shen Yiding , Ma Guoyan , Yang Kai , Hou Xuming
（1. Shaanxi Key Laboratory of Light Chemical Engineering Auxiliaries, Shaanxi University of Science & Technology,
Xi'an 710021, Shaanxi, China; 2. College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an
710065, Shaanxi, China）
Abstract: The phosphorylated styrene-acrylic antirust emulsion (PM-2-SP) with core-shell structure was
synthesized by semi-continuous seeded emulsion polymerization using methacrylic acid (MAA) as
hydrophilic monomer, hydroxypropyl methacrylate (HPMA) as crosslinking monomer, styrene (St) and
methyl methacrylate (MMA) as hard monomer, butyl acrylate (BA) as soft monomer, 2-hydroxyethyl
methacrylate phosphate (PM-2) as functional monomer and dodecanethiol as segment regulator. The effects
of PM-2 dosage on the stability of PM-2-SP emulsion, water resistance of PM-2-SP film and antirust
properties of film were studied. The size and morphology of the PM-2-SP emulsion particles were
characterized by DLS and TEM. The surface of the film was observed by AFM. The corrosion resistance of
paint film was tested by salt spray tester. The results showed that when PM-2 dosage was 4% (based on the
total mass of monomers, the same below), the prepared PM-2-SP emulsion had core-shell structure and
exhibited good stability performance, which had a particle size of 135.7 nm and PDI of 0.150. The film had
smooth and compact surface and excellent water resistance. Compared with those of pure styrene-acrylic
paint film, the corrosion potential of the PM-2-SP paint film was –0.391 V, which was an improvement of
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47.16%, while the corrosion current reached 1.95×10 A/cm , decreased by 94.76%. The salt spray

收稿日期：2019-05-09; 定用日期：2019-07-05; DOI: 10.13550/j.jxhg.20190414
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。