Ultraviolet aging test chamber is a kind of test chamber used to simulate ultraviolet radiation and condensing climatic conditions, using fluorescent ultraviolet lamp as light source, to test the light resistance of non-metallic products or materials, and to carry out aging test of artificial light source to obtain the weather resistance of products or materials. sexual effect. The test chamber can present natural climatic phenomena such as ultraviolet rays, rain, high temperature, high humidity, and condensation and darkness, and attribute them to a circulatory system, and the number of cycles is automatically generated from these simulated climates.
Because the ultraviolet rays of the sun will cause a certain degree of damage to the product, however, the ultraviolet aging test chamber only needs a few months, years, or even longer. Outdoors, the ultraviolet aging only needs a few months, years or more.
Specifically, it is mainly to observe whether the product or material has discolored, chalked, cracked, embrittled, oxidized and whether it has become cloudy or has decreased brightness. In addition, the test equipment can repair damage caused by rain and dew.
The UV lamps in the box cannot be chosen arbitrarily. We have to choose according to our own needs. Different test environments and products require UV lamps with different wavelengths. Generally speaking, there are two kinds of UV lamps suitable for the test box: UVA and UVB.
Type 1: UVA-340 can well simulate short-wave ultraviolet light from sunlight, that is, the sunlight cut-off point in the wavelength range of 365nm~295nm.
Type 2: UVB-313 tube can produce short-wave ultraviolet light, and its radiation is stronger than the ultraviolet radiation of sunlight in nature, so it can make products or materials age rapidly. However, it should be noted that this type of UV lamp is not suitable for all product materials and may cause damage to some product materials. Therefore, this UVB lamp is more suitable for research and development, quality control, etc. If you need to test weather-resistant products or materials, UVB type UVB lamps can also be used.
In addition, the aging acceleration effect of UVA-340 is basically slightly worse than that of UVB-313, slower and less obvious. However, UVA-340 is basically better than UVB-313 in the repeatability test of weather resistance. Please specify in detail which type of lamp tube to use for your UV aging test box, it only depends on the user's needs.
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