The xenon lamp climate-resistant test chamber imitates the entire solar spectrum, including ultraviolet light, visible light, and infrared light, and its purpose is to simulate sunlight. The ultraviolet aging test does not attempt to imitate the sunlight, but only imitates the destructive effect of sunlight. It is based on the principle that long-term exposure to durable materials exposed outdoors is the most aging damage caused by short-wave ultraviolet light.
Natural climate aging test of xenon lamp climate resistance test box is a widely used method at home and abroad. The main reason is that the results of natural weathering experiments are more realistic, the required cost is lower and the operation is simple and convenient. Although we can conduct natural weather aging tests anywhere, the internationally recognized test site is Florida in the United States because of its abundant sunlight. But the shortcoming of the natural weather aging test is that the test takes a long time, and the tester may not have so many years to wait for the test results of a product. In addition, even in Florida, the climate cannot be exactly the same year after year, so the reproducibility of the test results is not ideal.
Although the aging resistance test method stipulated in the national standard and currently popular in China is xenon arc radiation, xenon arc radiation and ultraviolet aging tests abroad are both widely used test methods. These two methods are based on completely different principles.
Before the 1980s, using carbon arc lamps or directly irradiating with ultraviolet lamps to conduct parallel tests can also shorten the inspection cycle. Which test method is the best? There is no simple answer. Which method to choose depends on the material to be tested, the final application of the material, the mode of destruction of the material concerned and financial factors. In addition, even if the aging test is carried out in a natural climate, there is another way to speed up, that is, to install the test sample on a sample frame that can rotate as the sun rises and falls, so that the sample will be kept in direct sunlight most of the time To obtain accelerated test results.
About Shanghai Linpin Instrument Co., Ltd.
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