热反射隔热涂料自然暴露后反射性能试验研究
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摘要
对制备的5种热反射隔热涂料开展了2 a的自然暴露试验。研究分析了5种不同组成体系热反射隔热涂料产品的太阳光反射比、近红外反射比、半球发射率、明度值等性能变化规律。结果表明:自然老化前后的反射性能与基材种类无关;自然老化后,样品半球发射率变化不大,相同热反射隔热涂料样品的半球发射率基本在0. 8～0. 9之间,5种热反射隔热涂料的太阳光反射比经过24个月的自然暴露后,太阳光反射比的衰减都在30%以上。
A natural exposure field was established for the prepared five kinds of thermal reflective insulation coatings and a natural exposure test was conducted for two years. The analysis of the sunlight reflectance,near infrared reflectance,hemispherical emissivity,and lightness value of the thermal reflective insulation coating products of A,B,C,D,E five different compositional systems was conducted. The results showed that the reflective performance before and after natural aging had nothing to do with the type of substrate. After natural aging,the hemispherical emissivity of the sample did not change much. The hemispherical emissivity of the same thermal reflective insulation coating sample is basically between 0. 8 and 0. 9. The sunlight reflectance of the thermal reflective insulation coatings after 24 months of natural exposure was reduced by more than 30%.
A natural exposure field was established for the prepared five kinds of thermal reflective insulation coatings and a natural exposure test was conducted for two years. The analysis of the sunlight reflectance,near infrared reflectance,hemispherical emissivity,and lightness value of the thermal reflective insulation coating products of A,B,C,D,E five different compositional systems was conducted. The results showed that the reflective performance before and after natural aging had nothing to do with the type of substrate. After natural aging,the hemispherical emissivity of the sample did not change much. The hemispherical emissivity of the same thermal reflective insulation coating sample is basically between 0. 8 and 0. 9. The sunlight reflectance of the thermal reflective insulation coatings after 24 months of natural exposure was reduced by more than 30%.
引文
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[2]王晓莉,董洲,杨胜.反射隔热涂料的配方对比研究[J].涂料工业,2010,40(7):76-79.
[3]刘文涛,元强,谢宏,等.功能填料对反射隔热涂料隔热性能影响的研究[J].涂料工业,2016,46(12):22-28.
[4]林美.硅溶胶-纯丙复合乳液反射隔热涂料的制备及性能[J].高分子材料科学与工程,2017,33(3):168-173.
[5]孙明杰,贾梦秋,文倩倩.太阳热反射隔热涂料的研制[J].涂料工业,2010,40(9):37-40.
[6]陆洪彬,陈建华,冯春霞,等.新型太阳热反射隔热涂料的研制[J].太阳能学报,2008,29(12):1522-1527.
[7]徐金宝,杜丕一,钟国伦,等.红外反射颜料在建筑涂料中的应用研究[J].涂料工业,2017,47(5):69-74.
[8]庄超群.热反射屋面自然老化性能与节能实效研究[D].重庆:重庆大学,2016.
[9]高亚锋,郭睿,徐江民,等.高反射涂料自然老化后的隔热性能[J].土木建筑与环境工程,2017(6):129-134.
[10]陈东平,余恒鹏,曾洵,等.建筑反射隔热涂料隔热机理及性能试验研究[J].四川建筑科学研究,2018(1):114-118.