In-depth analysis of UV aging test chamber

One kind of testing chamber used for aging is the UV aging test chamber. Another name for the UV weathering chamber (or UV aging chamber) is the weather accelerated aging test chamber. At the chosen temperature, it replicates ultraviolet radiation and does UV tests. It is possible to age non-metallic materials in the UV aging test chamber using natural and artificial light sources.
The source consists of eight 40W UV fluorescent lights. A total of 8 ultraviolet fluorescent bulbs are used in this device (4 on each side). Ultraviolet rays are simulated in this controlled environment room.

What is a UV aging chamber?

To fully get the damaging effect of UV light, humidity, and temperature on the polymer material, the UV aging test chamber UV-263LS uses an ultraviolet lamp as the light source, maintains proper temperature and humidity control, and periodically causes the sample to condense (the aging of the material includes the material fading, loss of gloss, loss of strength, cracking, peeling, chalking and oxidation, etc.).
Water spray systems and condensation lamps may mimic the natural conditions of rain and dew, while UV lamps can replicate the effects of the sun’s ultraviolet rays. While the test was in progress, it kept the irradiation energy and temperature constant.
Paint coatings, automobiles, plastics, wood, glues, etc. often undergo a test cycle consisting of ultraviolet (UV) radiation at high temperatures and a dark humid condensation phase at 100% relative humidity.

UV Aging Chamber Structures
1) We choose stainless steel for the inner tank because of its high corrosion resistance and malleability. The outside has been painted with color steel, making it resistant to corrosion while also being long-lasting and visually appealing. We also provide 304 stainless steel if that is your preference.
2) The aging chamber has eight LISUN-made UV lights with a possible lifespan of 1600 hours.
3) The test environment temperature is maintained by a heating mechanism located at the base of the aging chamber and varies between 10 and 70 degrees Celsius.
4) The sample holder may be positioned in the center or on either side of the aging chamber (box type) (tower type).
5) The sprinkler system’s spray head is positioned in the middle of the lights; the system is operated through a touch screen; the test specifications regulate the injection time.
6) The box’s Foma wheel makes it easy to transport whenever necessary.
7) It is easy to see the testing procedure while it is being performed, thanks to the hollow heated glass on the door.
8) The door handle may be opened with one hand, eliminating the need for two.
9) Silicone weather strip, waterproof, shockproof, rustproof, and resistant to extreme temperatures and the elements.
10) The blackboard temperature may be easily monitored using a standard PT100 blackboard temperature sensor, allowing the testing environment to be kept at a comfortable level. Having a homemade irradiance meter makes it easy to keep tabs on the lighting conditions in the testing area, allowing for prompt lamp adjustments or replacements.
11) The spraying water is stored at the very bottom of the tank. If you want accurate findings from your tests, use distilled or filtered water for your samples.
12) The test water may be reused, cutting down on costs. In the event of a water shortage, the tank’s automated safety features will kick in, making it easier for the operator to top up the supply.
13) The control system uses a touch screen color panel control interfaced entirely in English for maximum usability from both a human and machine perspective. The gadget is USB-enabled, so you can always pull out your test results.

UV aging test chamber working principle
1) With a fluorescent UV lamp replicating the sun’s UV rays and condensation, the UV aging tester speeds up the weathering testing of materials.
2) It can reproduce the circumstances of a natural climate, including UV radiation, rain, hot temperatures, high humidity, condensation, and darkness, and then automatically run an appropriate number of cycles.
3) By regulating irradiance, surface temperature, condensation, rain, and other variables, a UV aging test room simulates the effects of the sun’s rays on a sample of material. The UV aging test chamber UV-263LS artificially accelerates the aging process of samples by simulating the UV radiation of outside light and other environmental factors like rain and dew.
4) There is a larger UV accelerated aging multiplier compared to other light sources, making it ideal for the fast screening certain materials. Used in several applications, including automobile parts, plastics, packaging, paints & coatings, inks, pigments, dyes, stabilizers and additives, photochemical materials, industrial and surface textiles, etc.
5) To properly conduct experiments, the sole need for the UV aging test chamber‘s operation principle is adherence to the experimental conditions. Results may be made more reproducible. Also, we can make natural and artificial climate aging work better together.
6) To expose the radiation energy after a particular exposure, artificial climatic aging or artificial radiation exposure of coatings using a xenon arc lamp with a filter light is used. The goal is to alter specific functions to a certain degree or to achieve the necessary dose of radiation associated with aging.
7) The primary role that this coating will play in real life. It may compare the revealed coating’s function to a similar but unseen coating (comparison specimen). The performance may be compared to other aging coatings when both are examined in a controlled environment.
8) In the natural climate aging process. Solar radiation is the main factor in the aging of coatings. The same principle is true for the (solar) radiation exposed under glass panels. Thus, it is particularly important to imitate this parameter for artificial climate aging and artificial radiation exposure.
9) The xenon arc radiation source is equipped with different filter systems that can change the spectral division of the radiation that occurs, which can imitate the spectral division of solar radiation and the UV and visible scale of solar radiation filtered by 3 mm thick window glass, respectively.
10) Because the xenon arc lamp and filter system degrade with usage, the irradiance E may shift somewhat throughout experiments in the open apparatus. As a result, keeping track of the exposure duration isn’t enough.
11) As a result, it is important not only to keep track of how long the coating was exposed but also to measure the radiant energy H that it was subjected to during that time, either in the sub-400 mm range or at standard wavelengths like 340 mm.
12) This document uses the phrase “artificial climate aging” to differentiate between natural and artificial aging based on the UV aging test chamber’s UV-263LS underlying working concept. Artificial radiation exposure refers to experiments shielding participants behind glass to replicate solar radiation.

UV aging testing chamber control system
1) A black aluminum plate serves as the connection point for the temperature sensor, while a black plate temperature gauge is utilized to fine-tune the heating.
2) There is no need to constantly load and unload the radiometer since the probe is permanently attached.
3) An advanced UV irradiation meter shows the readings and accurately measures the radiation.
4) The intensity of radiation does not exceed 50W/m2.
5) The brightness and the amount of condensation may be adjusted separately and cycled through in random order.
6) Light and condensation may each be set to an independently programmable period within a thousand-hour range, and it can adjust the alternating-cycle control time accordingly.

UV Aging Chamber Temperature System

The sensor monitors the UV aging test chamber‘s environment and makes timely adjustments to the room’s temperature and humidity.

UV Aging Chamber Lighting System
Using a specialized UV radiation meter, the quantity of radiation is clearly shown and quantified.
It must replace each row of lamps with a fluorescent lamp after the initial illumination of 400–450H. The other lights must compensate for the loss caused by the aging of the lamps through the bulb cycle and replacement method.
It may count on each bulb to provide between 1600 and 1800H of service when run in this manner.
A digital key temperature controller or color touch screen program controller is used to adjusting the chalkboard’s temperature. A microprocessor determines the power output, and a controller automatically adjusts itself. The PT100 temperature sensor is the industry standard for monitoring chalkboard temperatures.

UV Accelerated Aging Chamber Spray System
Automatic controls are used to humidify the water supply, and any leftover water may be reused to further reduce consumption and save water resources.
To make it easier for the operator to replace the water source, the water storage tank is located in the bottom right corner of the control box and has automatic water shortage prevention.

UV Aging Chamber Condensation System
Heat is transferred to the water quickly and evenly thanks to a heating system built into the tank’s lining.
A LISUN temperature controller with a color touch screen regulates the water heater. The tank and electric water heater are integrated into the unit’s base.
The dark condensation test portion needs an increased temperature within the box and a high-water vapor concentration. Dew forms on the sample’s surface when water vapor meets the comparatively cold surface.

Method
For simulations of direct solar UV exposure, the UV lamp is suggested. Materials may not decay as quickly under UV lights, but there may be a better ability to correlate with true outside weathering because of the lamps’ lack of UV production below 300 nm.
Comparing the performance of polymers, textiles, and UV stabilizers, all non-metallic, may be done using tests employing UV lamps.
These bulbs generate UV light at various wavelengths and intensities, but they both have a peak at 313 nm and the same UV spectrum. For a given set of cycles and temperatures, the lamp with greater UV irradiation often has shorter durations to failure. In addition, UV to moisture and temperature ratio may cause test results to vary even when utilizing the same cycles and temperatures with both lamps and identical materials.

Applications
UV radiation, which makes up around 5% of sunlight, is responsible for most polymers’ breakdown. It is common practice to test materials in rooms designed to replicate just the shortest wavelengths (UV). Sunlight’s shortest wavelengths are in the ultraviolet spectrum. Therefore, it is a quick and effective solution for many uses.
The UV lamp is a popular fluorescent UV light utilized for its quick turnaround time on tests. In contrast, solar radiation does not include the shorter wavelengths in the spectral range.
Heat resistance testing for electrical insulation, aging of electronic components, plasticizing product testing, leather textile testing, treatment requiring mandatory ventilation, etc., are just some of the many uses for UV test chambers, which mimic high-temperature atmospheric pressure environments.
It may test a wide variety of geosynthetics in the UV aging test chamber UV-263LS, including those with high demands for resistance to light, weather, and the passage of time.
The sample was tested under controlled conditions using a fluorescent UV light vessel. Light, heat, humidity, and precipitation—the four basic causes of aging in the natural environment—can be simulated and reinforced. This method may mimic an accelerated test conducted under real-world conditions and over an extended period to learn how well a material holds up to the elements.

Features

1. The controls are simple to use. The efficiency of ventilation system measurement.
2. Adjustable fresh air intake is part of the wing’s diffused supply air circulation system.
3. Suspension frame motors rotate at 8 to 10 rpm, which may take the assembly apart without any tools.
4. Improves dependability of operation by using a cooling system that relies on imported components from a well-known international brand.
5. The touch screen controller, user-friendly Man-Machine interface, and safety device
6. guarantee simple operation and straightforward upkeep.
7. It may cycle on and the light and the moisture off separately.
8. Since the radiometer’s probe is permanent, loading and reloading the instrument are unnecessary.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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