Xenon Arc Test Chamber VS UV Aging Test Chamber

In daily life, clothing is of great significance as it is frequently exposed to sunlight and moisture. Over time, clothes are prone to issues like fading and cracking, which seriously impact their appearance and performance. Thus, for fabric production and sales companies, accurately assessing the aging resistance of clothing is crucial.
There are two main types of aging tests: natural environment aging and artificial accelerated aging. Because natural aging processes are slow, researchers have developed methods to simulate the effects of sunlight and moisture for short periods of time. Common accelerated testing equipment includes UV aging test chambers and xenon lamp aging test chambers. They are widely used in product research and development, quality control, etc., and are suitable for aging research on various materials.

1. What are xenon arc lamps and UV lamps?

1.1 Xenon arc lamps
Xenon arc lamps use xenon lamps as light sources and can simulate the entire solar spectrum, including ultraviolet light, visible light, and infrared light. Its spectrum is in the range of 295 – 800 nm, which is highly similar to the solar spectrum. This feature enables it to fully simulate the comprehensive effects of sunlight on materials in the natural environment. It is suitable for testing a variety of materials, such as automotive interior materials and various textiles.
1.2 UV lamps
UV lamps use UV lamp tubes to produce ultraviolet light with specific wavelengths, but it cannot simulate the complete solar spectrum. The shortest wavelength band from 365 nm to the solar spectrum, especially the short-wave ultraviolet light of 300 – 400 nm, is the main factor causing material aging. For some materials that are only sensitive to ultraviolet rays, such as certain types of plastics, coatings, etc., UV lamps are more suitable for their aging tests.

2. What is a Xenon Arc test chamber?

2.1 Working principle
​The Xenon Arc test chamber uses a xenon lamp as a light source to simulate solar radiation. Xenon arc lamps are high-intensity gas discharge lamps that can accurately simulate the spectral distribution of sunlight. When the test chamber is running, the xenon arc lamp is activated by high voltage to release strong light to simulate the effect of sunlight on the material. Its light source system is also equipped with optical components such as reflectors and filters to ensure that the light can be evenly irradiated on the test sample.
2.2 Test method
Xenon arc lamps select different filters according to different irradiance requirements. Replacing the filter glass can change the type of short-wave ultraviolet rays that pass through, thereby changing the speed and form of material damage.
Daylight filter: used to simulate direct sunlight outdoors, suitable for testing materials used outdoors.
Window glass filter: used to simulate sunlight through window glass, often used for testing indoor materials, such as printed materials or textiles.
Ultraviolet extended filter: This filter allows ultraviolet rays below the normal cutoff point of natural sunlight to pass through. Used to provide faster and more stringent test conditions. Commonly used in related tests in the fields of automobiles, aviation, etc.
Flat-plate type: refer to the YG611T and YG611F models, which are conducive to the flat-laying test of large-area samples and ensure uniform light exposure;
Rotary drum type: refer to the YG611M model. By rotating the sample, each part of the sample can receive light more evenly, which is suitable for material testing scenarios with high requirements for test uniformity.

Note: Irradiance, that is, the luminous flux of visible light received per unit area. In the xenon lamp aging test chamber, different test requirements correspond to different irradiance values, and different filters need to be selected. 

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