片状铝粉与SiO_(2)气凝胶对硅溶胶/苯丙乳液双层涂料隔热性能的影响  

Influence of Flaky Aluminum Powder and SiO_(2) Aerogel Fillers on the Thermal Insulation Properties of Silica Sol/Styreneacrylic Emulsion Double-layer Coatings

作　　者：刘传龙 刘荣鑫 王莉 杜国平[2] LIU Chuanlong;LIU Rongxin;WANG Li;DU Guoping(Shandong Yanzhou Construction Corporation,Jining,Shandong 272100,China;School of Physics and Materials Science,Nanchang University,Nanchang 330031,China;The Second Middle School of Dandong,Dandong,Liaoning 118000,China)

机构地区：[1]山东兖州建设总公司,山东济宁272100 [2]南昌大学物理与材料学院,南昌330031 [3]丹东市第二中学,辽宁丹东118000

出　　处：《涂料工业》2025年第1期58-63,共6页Paint & Coatings Industry

基　　金：山东省工信厅技术创新项目(202350800363,202250800582)。

摘　　要：为提高涂料保温隔热性能,以硅溶胶为主要成膜物,苯丙乳液为辅助成膜物,在基体表面形成双层隔热涂层,其中底层和顶层涂料分别以SiO_(2)气凝胶、片状铝粉作为隔热填料。系统研究了片状铝粉和SiO_(2)气凝胶对双层涂料隔热性能的影响,并对相关隔热机理进行了探讨。结果表明:片状铝粉含量为4%时涂层的隔热效果最好,与空白板相比隔热温差达到9.1℃;SiO_(2)气凝胶的添加量为4%~5%时,涂层的隔热性能最佳。片状铝粉的添加可使涂料具有反射型隔热性能,而SiO_(2)气凝胶的添加使涂料具有阻隔型隔热特性。结合这两者的隔热特性,成功构建了具有双机制隔热特性的双层涂料结构,其隔热温差达到了10.9℃,高于单一涂层的隔热效果。To enhance the thermal insulation properties of coatings,double-layer coatings were constructed.The coatings were prepared with silica sol and styrene-acrylic emulsion as the main and auxiliary film-forming compounds,respectively.The bottom and top coating contained SiO_(2) aerogel and flaky aluminum powder as their thermal insulation fillers,respectively.The behavior of flake aluminum powder and SiO_(2) aerogel thermal insulating fillers on the thermal insulating properties of double-layer coating was systematically investigated,and the related thermal insulating mechanisms were discussed.The results indicated that the optimal insulation effect was achieved with 4%aluminum powder addition,resulting in the insulation temperature difference of 9.1℃compared with that of the blank board sample.For the SiO_(2) aerogel-based coating,the optimal addition for best thermal insulation was 4%-5%.The addition of flaky aluminum powder could render it with the reflection-type thermal insulation property,while the addition of SiO_(2) aerogel could render it with the barrier-type thermal insulation property.By combining the thermal insulation characteristics of both,a double-layer coating structure with dual mechanism thermal insulation properties was successfully constructed,with a thermal insulation temperature difference of 10.9℃,which was higher than the thermal insulation effect of a single coating.

关 键 词：硅溶胶 双层涂料 片状铝粉 SiO_(2)气凝胶 隔热保温 

分 类 号：TQ637.6[化学工程—精细化工]