Page 176 - 精细化工2019年第10期
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第 36 卷第 10 期 精 细 化 工 Vol.36, No.10
2019 年 10 月 FINE CHEMICALS Oct. 2019
建筑用化学品
温控防霉水性外墙涂料的制备及性能
曲园园
(淄博职业学院 化学工程系,山东 淄博 255000)
摘要:以丙烯酸、丙烯酸丁酯、N-异丙基丙烯酰胺(NIPAM)为原料,采用反应型乳化剂烯丙基丙基磺基琥珀
酸双酯钠盐(M-10S)、烯丙基辛基酚聚氧乙烯醚(AE-200)制备了 N-异丙基丙烯酰胺改性丙烯酸树酯(NAB)
乳液。探讨了丙烯酸加入量对 NAB 乳液的低临界溶解温度(LCST)的影响,并研究了不同 LCST 对防霉剂异
噻唑啉酮温控释放速率及防霉效果的影响规律,确定了适于防霉外墙涂料所用 NAB 乳液的 LCST 应为 15 ℃。
将该 NAB 乳液与有机硅改性丙烯酸树脂(SBA)乳液复配后作为涂料成膜物,异噻唑啉酮作为防霉剂,并添加
轻质碳酸钙、滑石粉等颜填料制备了具备温控防霉特性的水性外墙涂料,其涂层耐霉菌达到 0~1 级,其他各项
性能均达到外墙涂料的应用要求。
关键词:N-异丙基丙烯酰胺;异噻唑啉酮;温控防霉;水性外墙涂料;建筑用化学品
中图分类号:TQ637 文献标识码:A 文章编号:1003-5214 (2019) 10-2142-05
Preparation and Properties of Temperature-Controlled Mildew-Proofing
Aqueous Building Exterior Wall-Coating
QU Yuan-yuan
(Department of Chemical Engineering, Zibo Vocational Institute, Zibo 255000, Shandong, China)
Abstract: Poly(N-isopropylacrylamide) modified acrylate emulsion (NAB) was synthesized by emulsion
polymerization using acrylic acid (AA), butyl acrylate and N-isopropylacrylamide (NIPAM) as raw
materials in the presence of reactive emulsifiers 4-propyl-1-(propenyl)-sulfosuccinate (M-10S) and allyl
octylphenyl polyoxyethylene glycol ether (AE-200). The effect of the amount of AA on the lower critical
solution temperature (LCST) of NAB was studied. Moreover, the effects of different LCST on the
temperature controlled release rate and mildewproof effect of mildewproof agent isothiazolinone were
discussed. The results indicated that NAB with LCST of 15 ℃ was suitable to be applied in the
mildew-proofing coating. Temperature-controlled mildew-proofing aqueous building exterior wall-coating
was prepared by mixing the NAB emulsion and silicone modified acrylate (SBA) using isothiazolinone as
antibacterialagent, and calcium carbonate, talcum powder as fillers. The mildew-proofing grade of this
coating was 0~1, and all other properties meet the application requirements of exterior wall paint.
Key words: N-isopropylacrylamide; isothiazolinone; temperature-controlled mildew-proofing; aqueous
building exterior wall-coating; building chemicals
绿色环保、高性价比的水性涂料已经成为涂料 霉性能 [4-6] 。但是,简单依靠物理混合添加的防霉剂
行业发展的重点研究领域 [1-2] 。但是,传统的水性外 会在日晒雨淋等自然环境中从涂层中大量无序释
[7]
墙涂料在高分子乳液制备过程中需要添加大量表面 放,从而使涂层使用时效迅速降低 。
[3]
活性剂 。这些表面活性剂小分子会导致涂料基材 研究影响霉菌繁殖的诸多因素可知,温度是最
[8]
受到侵蚀。现有的工业涂料为了防止涂料霉变,大 重要的影响因素之一 。大多数霉菌繁殖最适宜的
多在涂料生产过程中添加各类防霉剂以提高涂料防 温度为 25~30 ℃,而在 15 ℃以下时,霉菌的生长
收稿日期:2019-02-17; 定用日期:2019-04-26; DOI: 10.13550/j.jxhg.20190126
基金项目:淄博市科学技术发展计划(2018kj01036);淄博职业学院科研项目(2018zzzr05)
作者简介:曲园园(1980—),女,讲师,E-mail:quyy3233@163.com。