基于高光谱技术建筑反射隔热涂料光谱特征减损规律的分析  

Analysis of Spectral Characteristic Loss Law of Architectural Reflective Thermal Insulation Coatings Based on Hyperspectral Technology

作　　者：李笑芳 王延仓 王丽玫[1] 李晓鹏[1] 张国栋 LI Xiao-fang;WANG Yan-cang;WANG Li-mei;LI Xiao-peng;ZHANG Guo-dong(Langfang Normal University,Langfang 065000,China;North China Institute of Aerospace Engineering,Langfang 065000,China)

机构地区：[1]廊坊师范学院,河北廊坊065000 [2]北华航天工业学院,河北廊坊065000

出　　处：《光谱学与光谱分析》2022年第12期3745-3750,共6页Spectroscopy and Spectral Analysis

基　　金：国家重点研发计划项目(2016YFD0300609);北京市农林科学院科技创新能力建设专项(KJCX20170705);河北省建设厅科技项目(2017-2096)资助。

摘　　要：受太阳辐射、气象等外界不可控因素的影响,建筑反射隔热涂料的反射隔热性能会逐渐减损。建筑反射隔热涂料性能在时间维度的变化是评价建筑在特定时段内节能效果的关键基础数据,明确建筑反射隔热涂料性能在时间维度的减损规律具有重要的现实与理论意义。建筑反射隔热涂料的反射、吸收特征是其性能的直观体现,借助高光谱技术定量分析涂料反射、吸收特征可正确揭示涂料性能在时间尺度的变化特征。为研究分析建筑反射隔热涂料性能在时间尺度上的减损规律,该研究利用高光谱技术,联合进行室内与外置实验采集涂料样本不同时期的光谱数据,并结合吸收峰深度、图谱分析法等光谱处理方法,定量分析涂料光谱反射特征、吸收特征在时间维度的变化特征,以研究分析涂料光谱反射率在外界环境影响下的减损规律。研究结论如下:(1)在350~2250 nm波段区间内,建筑反射隔热涂料的光谱反射率随时间的增加而降低;光谱反射率的降低幅度在1月—5月内呈增加趋势,而在5月—10月内呈递减规律,且光谱反射率在可见光区间的降低幅度明显高于近红外区域。(2)建筑反射隔热涂料的吸收峰深度随时间的增加而降低,降低幅度在0~0.163范围内。(3)涂料厚度对涂料光谱反射率(涂料性能)及其在时间尺度的变化规律具有重要影响,且该影响拥有较强的稳定性;涂料厚度对涂料光谱反射率的减弱幅度具有较强影响,单一厚度的建筑反射隔热涂料的光谱反射率随时间的变化具有一致性,随时间的增加而变弱。The reflection and thermal insulation performance of building reflective thermal insulation coatings will be impaired due to the influence of solar radiation,meteorological conditions and other uncontrollable external factors.However,the change in the performance of building reflective thermal insulation coatings in the time dimension is the key basic data to evaluate the energy-saving effect of buildings in a specific period,so it is of great practical and theoretical significance to clarify the impairment law of the performance of building reflective thermal insulation coatings in the time dimension.Architectural reflective thermal insulation coatings’reflection and absorption characteristics are the intuitive embodiment of their properties.The change characteristics of coating properties in time scale can be correctly revealed by using hyperspectral technology to analyze the reflection and absorption characteristics of coatings quantitatively.In order to study and analyze the loss law of the performance of architectural reflective thermal insulation coatings on the time scale,hyperspectral technology is used as the main technical means in this study.Through the combination of indoor paint spectral determination experiment and paint sample external experiment to collect paint spectral data in different periods,and combined with spectral processing methods such as absorption peak depth and spectral analysis,the variation characteristics of spectral reflection and absorption characteristics of coatings in time dimension were quantitatively analyzed.In order to study and analyze the loss law of spectral reflectance of coatings under the influence of the external environment,the conclusions are as follows:(1)in the range of 350~2250 nm,the spectral reflectivity of architectural reflective thermal insulation coatings decreases with the increase of time.The decreasing range of spectral reflectance increased from January to May but decreased from May to October,and the decreasing range of spectral reflectance in the

关 键 词：反射隔热涂料 减损 高光谱 吸收峰深度 

分 类 号：O433.4[机械工程—光学工程]