What’s Ultraviolet UV aging test chamber

Aging testing is a laboratory process that determines how quickly a material degrades, allowing for the prediction of its lifespan. It can mimic the harm done by UV rays, ozone, and temperature. Aging test chambers can quickly mimic the damage that would typically take months or years to occur outside.

The material will be exposed to an alternate cycle of UV light, humidity control, and high temperature environment in the UV accelerated aging chamber. It mimics the sun’s beams using a specific fluorescent ultraviolet bulb. Condensation humidity and/or water spray can be used to simulate dew and rain. The LISUN UV Accelerated Aging Chamber is the most basic, trustworthy, and user-friendly aging testing device. It is the aging testing chamber that is used the most frequently worldwide.

What is a UV aging test chamber?
Materials are aged in aging test chambers at specific temperatures and humidity levels. The UV weather resistance tester is another name for the UV aging test chamber. The UV light aging test simulates the harm that sunshine, moisture, and temperature have on durable materials by using a fluorescent UV light. The fluorescent UV lamp produces more UV light than visible or infrared light rays while electrically being similar to a standard cold fluorescent bulb for lighting.

Many materials lose their ability to withstand atmospheric contaminants when exposed to UV radiation in excess. To imitate a specific subset of the solar spectrum’s wavelengths, UV lamps are used. Operator can select different UV lamps based on various testing requirements. This is so that UV lamps of different types emit irradiance with varying energies and wavelengths. In this way you can use LISUN UV aging test chamber to test out different products.

What are the main factors that cause aging?
Light (particularly UV light), high temperatures, and moisture conditions including rain, dew, and high humidity are the principal causes of materials aging. Light and moisture frequently work in concert to accelerate aging. While some materials hold up well when exposed to light or moisture alone, when light and moisture are present together, failure is more likely.

Light
Light sensitivity varies amongst different materials. The majority of polymer aging in durable materials, such as most coatings and plastics, is caused by short-wave UV. Long-wave UV and even visible light, on the other hand, can pose a major threat to less resilient materials like certain paints and dyes.

High temperatures
Despite not having an impact on the initial photochemical processes, temperature does have an impact on the later chemical processes. Temperature control for laboratory aging studies must be exact, and raising the temperature is frequently used to hasten the aging process.

Humidity
Dew damages a substance more severely than rain because it adheres to it for a longer period of time. However, the temperature shock brought on by a rapid downpour of rain cannot be disregarded. For instance, when rain showers and swift heat dissipation cause the temperature of an automobile to rise suddenly on a hot summer day.
Any one of these three elements has the potential to deteriorate materials. They frequently work together to injure people more than each one of them would alone.

Working Principle of LISUN UV aging test chamber
Most materials’ weathering resistance is mostly damaged by sunlight’s UV radiation. To replicate the short-wave portion of sunlight, we utilize UV lamps, which only generate a small amount of visible and infrared light. Because each type of UV lamp produces a varied amount of irradiance energy and wavelength, we select different wavelength UV lamps in accordance with the various testing needs. UV lights can often be separated into UVA and UVB.

The UV aging tester accelerates weathering testing on materials by imitating UV radiation and condensation in natural sunshine to acquire data on the weathering of materials. A fluorescent UV lamp is used as the light source. By duplicating these variables, putting them into a cycle, and allowing it to automatically perform the number of cycles finished, it may imitate UV, rain, high temperatures, high humidity, condensation, darkness, and other climatic factors in a natural climate.

Testing Standards

ISO 48-3-2006, “Plastics – Methods of Exposure to Laboratory Light Sources – Part 3: Fluorescent UV Lamps,” ASTM D4329-2005, “Standard Practice for Fluorescent UV Exposure of Plastics,” ASTM D4587-2005, “Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings,” ASTM D5208-2001, “Standard Practice for Fluorescent.

Control System
For a more steady temperature, the temperature sensor is connected to a black aluminum plate, and the heating is controlled by a black plate temperature gauge. Since the radiometer probe is fixed, it doesn’t need to be loaded and unloaded repeatedly. A specialized UV irradiation meter is used to display and measure the radiation with extreme accuracy. Irradiance does not exceed 50W/m2. Condensation and light can both be separately controlled and cycled. Any time within a thousand hours can be chosen for the independent control time for light and condensation as well as the alternating cycle control time.

What materials can be tested with LISUN UV aging test chamber?
For accelerated weathering tests of paint, ink, chemicals, rubber, paint, adhesive, etc., a UV aging test chamber is appropriate. It may mimic climatic conditions like ultraviolet radiation, rain, hot weather, high humidity, condensation, and nighttime. Reproducing these conditions combines them into a single cycle, which is then automatically carried out to finish numerous cycles.

It is frequently used to assess the climate resistance of materials. The UV Climate Resistant Aging Test Chamber for Material Development simulates the effects of sunlight degradation on the material and product. You can test Textiles, Leather, Plastics, Rubber goods, Paints, Coatings, Dyes, Auto components and Building supplies.

Benefits of Aging Test Chamber
Another type of light aging test apparatus that simulates light is the ultraviolet aging test chamber. It mostly mimics the UV portion of sunlight. It can also mimic the harm done by rain and dew at the same time. By exposing the substance to be tested to a carefully timed cycle of sunshine and moisture while raising the temperature, the apparatus conducts the test. The apparatus may imitate the effects of moisture by condensation or spraying and simulates sunlight using ultraviolet fluorescent bulbs.

Materials are harmed by moisture and natural sunshine, which results in countless annual economic losses. The UV accelerated weathering tester can mimic the harm done by rain, dew, and sunlight. By exposing the substance to be tested to a carefully timed cycle of sunshine and moisture while raising the temperature, the apparatus conducts the test. The apparatus may imitate the effects of moisture by condensation or spraying and simulates sunlight using ultraviolet fluorescent bulbs.

The technology can replicate the damage that takes months or years to occur outside in only a few days or weeks. The principal effects of the damage are oxidation, chalking, cracking, blurring, fading, discoloration, and brightness loss. When choosing new materials, making improvements to current materials, or assessing composition changes that have an impact on a product’s longevity, test data from the equipment is quite helpful. An important indicator of the alterations the product will experience outdoors is the equipment.
Although ultraviolet radiation only makes up 5% of sunshine, it is the primary light source responsible for the decline in outdoor product durability.

This is due to the fact that when the wavelength lowers, the photochemical reaction of sunlight becomes more powerful. Therefore, it is not required to replicate the complete sunshine spectrum for modelling the destructive effect of sunlight on the material’s physical properties. Most of the time, short-wave UV light is all that needs to be replicated. Because they are more stable than other lights and can more accurately duplicate test results, UV lamps are utilized in weathering testers. To effectively mimic the effects of sunlight on physical qualities, such as brightness loss, cracking, and peeling, a fluorescent UV lamp can be used.

Should you use a UV aging test chamber or a xenon lamp aging test chamber?
Natural exposure assessment methods are practical, affordable, and simple to use, among other benefits. The majority of producers, however, are not prepared to wait years to determine whether a newly improved product formulation has in fact improved. Thus, accelerated laboratory aging testing is regarded as a more effective substitute. However, it is frequently debatable whether to test using a xenon lamp chamber or an accelerated aging testing.

Accelerated Aging Tester
UV aging testers imitate the harmful effects of sunlight on strong, long-lasting materials by using fluorescent UV lamps. These lamps emit mostly UV light rather than visible or infrared light, yet they are electrically similar to cold white lamps used for general lighting.

The spectral power distribution (SPD) of the UVA-340 mimics sunlight very well from the sunlight cutoff point to roughly 360 nm, making it the best lamp for simulating sunlight in the short-wave UV band. They age materials more quickly than UV-A lamps, however many materials can exhibit false results due to their shorter wavelengths than the cutoff of sunlight.
Dew causes items to be damp outside for 12 hours every day. To more accurately imitate external moisture erosion. Through the use of a unique condensation feature, the accelerated aging testing simulates outdoor dew moisture.

Xenon lamp tester
To eliminate undesirable spectral components, a xenon lamp tester’s spectrum must be filtered. As to ASTM G155, there are three common types of filters: daylight, window glass, and UV extension filters.
Most xenon test chambers use a water spray or humidity control system to imitate the effects of humidity. One drawback of water spray is that when a warmer sample is sprayed with colder water, the sample’s temperature will likewise drop, potentially slowing the rate of aging. Water spray, on the other hand, simulates thermal shock and mechanical erosion quite well.

There isn’t a single test method that will be effective for all materials and usage scenarios. The approach you pick will depend on your testing goals, timing, funds, etc. It has no genuine application value if it is too expensive to purchase and maintain. This is why the cost of acquisition, ongoing expenses, and upkeep are a few critical elements that should not be disregarded. When evaluating the benefits of test equipment, these elements should also be taken into account.

FAQs
What is the main use of a UV aging test chamber?
The fluorescent ultraviolet lamp of the ultraviolet lamp, the UV accelerated aging test chamber, and the condensation and water spray system may all replicate the effects of sunlight, rain, and dew. The temperature can be regulated for the duration of the test cycle. Paint coatings, the automobile industry, plastic products, wood products, glue, etc. are typical applications; the standard test cycle is typically UV light irradiation at high temperature and a dark and humid condensation cycle with a relative humidity of 100 percent.

What are some specifications of aging test chamber?
These chambers include a UV Aging Test Chamber. Temperature range: RT+40°C to 70°C. 90 to 99% relative humidity. 0.5°C of temperature variation and a 1°C difference in temperature homogeneity. Sample and lamp are separated by 503mm while the distance between the lamps is 70mm.

There are controls for the temperature, lighting, condensation, spraying, and test cycle. It has a customizable controller with a color touch screen. The size of a testing sample is typically 75 mm by 290 mm. Custom sizes are possible. Sink depth can be adjusted to 25mm. The region of effective radiation is 900 mm by 210 mm. The typical sample holder measures 24 inches. The tester also has an automatic spraying feature.

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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