Method and device for expediting weatherability test
专利汇可以提供Method and device for expediting weatherability test专利检索，专利查询，专利分析的服务。并且PURPOSE: To execute the test with high correlativity against natural deterioration of a coating material by executing irradiation of ultraviolet rays and dewing against the surface of the coating material in a specific time ratio for a specific time, and also, executing the dewing process for a prescribed time or longer.
CONSTITUTION: By turning on a metal halide lamp 1, the surface of a sample 9 to which a coating material is applied is irradiated with ultraviolet rays whose wavelength is about 295 - 450nm for a prescribed time by the intensity of 100 ± 20mW/cm
2 . In this case, temperature and humidity of the sample 9 are maintained constant. Subsequently, relative humidity in a sample chamber 7 is maintained in 90 ± 10% RH, and also, the sample 9 is cooled 23 - 25 so that the surface temperature becomes 50 ± 5%C, and dewing is generated forcibly on the surface of the sample 9. Next, an ultraviolet-ray radiating process and a dewing process are repeated plural times in accordance with necessity so that the sum total of both the processes is about 10 - 60 hours, a time ratio of both the process is 2/3 - 1/3, and the dewing process time exceeds about five hours. In such a way, the surface of the sample 9 can show a state being similar to a deteriorated state at the time when it is exposed out of doors for many hours, in a short time, and the test of high correlativity against natural deterioration is executed.
COPYRIGHT: (C)1992,JPO&Japio，下面是Method and device for expediting weatherability test专利的具体信息内容。
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