Innovative Features and Applications of UV Aging Test Chambers

The UV aging test chamber is mainly used to simulate the destructive effects of sunlight, humidity, and temperature on materials. The ultraviolet aging test chamber simulates sunlight, condensation, and natural humidity. The sample is tested in a simulated environment for a few days or weeks, which can reproduce the damage that may occur outdoors for several months or years.

Application of UV aging test chamber:
1. Simulate sunlight
The ultraviolet rays in sunlight are the main factor causing damage to the durability of most materials. We use ultraviolet lamps to simulate the shortwave ultraviolet part of sunlight, which generates very little visible or infrared spectral energy.

We can choose UV lamps with different wavelengths based on different testing requirements, as each lamp has different total UV irradiation energy and wavelength. Usually, UV lamps can be divided into two types: UVA and UVB.

2. Wet condensation environment
In many outdoor environments, materials can be damp for up to 12 hours per day. Research has shown that the main factor causing outdoor humidity is dew, not rain. The UV aging test chamber simulates outdoor moisture erosion through its unique condensation function.

During the condensation cycle during the experiment, the water in the bottom reservoir of the test chamber is heated to generate hot steam, which fills the entire test chamber. The hot steam maintains the relative humidity of the test chamber at 100% and maintains a relative high temperature. The sample is fixed on the side wall of the testing room, so that the test surface of the sample is exposed to the ambient air in the testing room.

The exposure of the outer side of the sample to the natural environment has a cooling effect, resulting in a temperature difference between the inner and outer surfaces of the sample. The appearance of this temperature difference results in liquid water generated by condensation on the test surface of the sample throughout the entire condensation cycle.

Due to outdoor exposure to moisture for up to ten hours per day, a typical condensation cycle typically lasts for several hours. The UV aging test chamber provides two moisture simulation methods.

The most commonly used method is condensation, which simulates outdoor moisture erosion. All UV aging test chambers can operate condensation cycles. Because some application conditions also require the use of water spray to achieve practical results, some UV aging test chambers can operate both condensation and water spray cycles.

3. Temperature control
In each cycle, the temperature can be controlled at a set value. At the same time, the blackboard thermometer can monitor the temperature. An increase in temperature can accelerate the aging process, and temperature control is also important for the reproducibility of testing.

For some applications, water spraying can better simulate the environmental conditions of final use. Water spray is very effective in simulating thermal shock or mechanical erosion caused by temperature upheaval and rain wash.

In some practical application conditions, such as sunlight, when the accumulated heat dissipates rapidly due to sudden showers, the temperature of materials will change sharply, resulting in thermal shock. This thermal shock is a test for many materials. The water spray of the UV aging test chamber can simulate thermal shock and/or stress corrosion.

The main features of the UV aging testing machine are:
1. The UV aging test chamber is designed from the perspective of user use, making it easy to operate, safe and reliable.
2. The installation thickness of the test piece can be adjusted, and the installation of the test piece is fast and simple.
3. The upward rotating door does not hinder users from operating the equipment, and the UV aging test chamber only occupies a small space.
4. The unique condensation system of the UV aging test chamber can meet the requirements by using ordinary tap water.
5. The water heater is located below the container and has a long lifespan without being immersed in water, making it easy to maintain.
6. The water level control is placed outside the UV aging test chamber, making it easy to monitor.
7. The device has casters for easy movement, and casters are standard accessories.
8. Automatic alarm for misoperation and malfunction, with manual for easy reference.
9. It is divided into ordinary type, light intensity control type, and spray type.

UV aging test Chamber is designed for evaluating the resistant performance of non-metallic materials, organic materials (plastics, paints, coatings, rubbers, etc.) under the specified conditions such as sunlight, temperature, and other climatic conditions. It creates a man-made testing environment imitating the natural light source such as sunlight and other damages in the nature, such as rain and dew damage, to impose on the materials and to assess the degree of color changing and fading under the accelerated environment conditions. The chamber fully complies with the requirements of Standard ISO 4892-1, ISO 4892-3, GB/T16585-1996, GB14522-93, GB/T16422.3-1997, ASTMG53 and etc., provides the best UV sunlight simulation, and is easy to use and operate.