《建筑密封材料试验方法 第21部分:人工加速气候老化后颜色变化的测定》标准解读  

Interpretation of the standard“Test Methods for Building Sealants-Part 21:Determination of Color Change after Laboratory Accelerated Weathering Procedures”

作　　者：周平 张冠琦 蒋金博 Zhou Ping;Zhang Guanqi;Jiang Jinbo(Guangzhou Baiyun Technology Co.,Ltd.,Guangzhou,Guangdong 510540,China)

机构地区：[1]广州白云科技股份有限公司,广东广州510540

出　　处：《中国建筑防水》2024年第1期46-50,共5页China Building Waterproofing

摘　　要：介绍了国标GB/T 13477.21—2022《建筑密封材料试验方法 第21部分:人工加速气候老化后颜色变化的测定》的编制背景和主要内容。标准采用带自动喷淋装置的紫外老化箱作为人工加速老化装置,通过测定密封胶试件在人工加速自动循环曝露前后的色差值,来评价密封胶颜色的稳定性,并进行变色等级划分。This article introduces the preparing background and main content of the national standard GB/T 13477.21—2022“Test methods for building sealants—Part 21:determination of color change after laboratory accelerated weathering procedures”.In this standard,a UV aging chamber with an automatic spray device is used as an artificial accelerated aging device.By measuring the color difference value of the sealant specimen before and after the artificial accelerated automatic cycling exposure,the stability of the sealant color is evaluated,and the color change level is divided.

关 键 词：建筑密封材料 试验方法 人工加速老化 颜色变化 变色等级 

分 类 号：TU578[建筑科学—建筑技术科学] TU504