自然大气环境试验是常被人们采用的一种方法.进行这种试验时,将试验样品(包括产品和材料)置于某种典型的气候环境中,有意识地让其在某气候条件下经受一定时期的考核,从而确定试验样品对该气候环境的适应性和耐候性.自然大气环境试验由于试验结果较符合实际,因而受到国内外科技界和工业部门的重视.一些工业发达国家早在十八世纪末就已开始自然大气环境试验.最初,它们针对涂料的耐候性研究而建立了暴露试验场.美国 Natural atmospheric testing is a commonly used method by which the test sample (including products and materials) is placed in a typical climate and consciously subjected to certain weather conditions Period of assessment to determine the test sample of the climatic and environmental adaptability and weatherability of the natural atmospheric environment test as the experimental results are more realistic and therefore subject to the domestic and international scientific and technological community and the industrial sector.A number of industrialized countries as early as eighteen The natural atmospheric environment test has begun at the end of the century, and initially they set up exposure test sites for weathering resistance of coatings