Do you know the difference between xenon lamp aging test box and UV ultraviolet aging test box in the aging industry?

Do you know the difference between xenon lamp aging test box and UV ultraviolet aging test box in the aging industry?

Core Tips: Of course, there are generally two types of climatic light aging test methods, one is to simulate UV embrittlement, and the second is to simulate full sun embrittlement. The method commonly used by countries all over the world

Of course, weather light aging test methods are generally divided into two types, one is to simulate UV embrittlement, and the second is to simulate full sun embrittlement. The key reason for the method commonly used by countries all over the world is that of course the results of the climatic embrittlement test are more realistic, require lower costs and are convenient and convenient to use. Although people can carry out natural weather aging tests in all regions, the more internationally recognized test site is Florida in the United Kingdom because of its sufficient light.

But of course, the deficiencies of the weathering test are that the test must take a long time, and the test staff will not have the time to wait for the test result of a product for these years.

1. Test method of UV lamp irradiation

The UV lamp direct aging test uses fluorescent UV lamps to simulate the destructive effects of natural light on the use of performance materials. This is different from the xenon arc lamp mentioned above. The fluorescent ultraviolet germicidal lamp is similar to the general general lighting cold light fluorescent tube in the basic thermal principle, but it can convert a large amount of ultraviolet light instead of invisible light or infrared rays.

For different exposure applications, there are different types of lamps with different spectrums to provide options. The UVA-340 lamp can simulate natural light very well in the critical short-wavelength ultraviolet spectrum. The spectral kinetic energy distribution (SPD) of the UVA lamp is very similar to the spectrogram obtained from the 360nm spectrum of the sunlight. UVA type lamps are generally used for accelerating artificial service weather aging test lamps. It destroys raw materials much faster than UVB lamps, but its kinetic energy output with a wavelength shorter than 360nm will cause deviations in specific experimental results for many raw materials.

2. Xenon arc radiation source experiment method

The xenon arc radiation source experiment is considered to be the most capable of simulating the entire solar spectrum, because it can cause ultraviolet, invisible and infrared light. Because of this, it is considered to be the most commonly used method in countries around the world. GB/T1865-1997 (equivalent to IS0113411:1994) introduces such methods in detail.

But this kind of method is also its limitation, that is, the reliability of the xenon arc lamp source and the resulting diversity of experimental system software. Xenon arc lamp sources must be considered to reduce unwanted radiation sources. In order to achieve different irradiance, there will be a variety of filter laminated glass types to provide options. The type of laminated glass used depends on the type of raw material to be tested and the final main purpose. Changing the filter laminated glass can change the type of short-wavelength ultraviolet light that passes through, thereby changing the rate and type of raw material damage. There are three types of filters for general applications: sunlight, glass windows, and extended ultraviolet types (Method 1 and Method 2 mentioned in the national standard GB/T1865-1997 match the first two types).

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May 22, 2023