The UV aging test chamber is an environmental test device that artificially simulates climate accelerated aging and is often used to study the aging properties of materials. For some new materials, the aging and light resistance of the products are extremely important. The equipment for accelerating the detection of aging and light stability is widely used in research and development, quality, control and material verification. These testing equipment provide fast and repeatable Test Results. The UV aging test chamber simulates three elements of climate aging—light, high temperature, and humidity—any of these three factors can cause aging damage to materials, but they often act simultaneously, causing more harm than any of them.
1. The first element, lighting:
Different materials have different sensitivities to light. For durable materials such as most coatings, plastics, the short wavelength band of UV in the UV aging chamber is responsible for most of the polymer's aging. However, for materials that are not so durable, such as some pigments and dyes, the long wavelengths of ultraviolet light or even visible light can cause severe aging.
2. The second element, high temperature:
When the temperature rises, the destruction of light will also increase. Although the temperature does not affect the main photoreaction, it affects the secondary chemical reaction. Laboratory UV aging chamber aging tests must provide accurate temperature control and often accelerate the aging process by warming up.
3. The third element, wet:
Dew, rain and high humidity are the main causes of moisture hazards. Studies have shown that items placed outdoors will be in use for a long time every day (average 8-12h per day is wet). Studies have found that dew formed by moisture is a major factor in outdoor humidity, and the damage caused by dew is greater than rain because it adheres Longer time on the material, causing more serious moisture absorption. Of course, rainwater is also very harmful to the material, and the rain will cause thermal shock. For example, a car with a rising temperature on a hot summer day is suddenly showered. When the temperature drops sharply, the impact will occur. The mechanical erosion caused by the rain wash will also accelerate the aging of the material. For example, the wood coating is washed away by rain to remove the surface aging layer, and the unaged inner layer is exposed to sunlight, thereby generating further Ageing.
