ASTM G53 Ageing Chamber , UV Light Lamp Aging Accelerated Weathering Tester

ASTM G53 Ageing Chamber UV Light Lamp Aging Accelerated Weathering Tester

Applicable industries:

It is widely used in paint, resins, plastics, printing and packaging, aluminum, adhesives, auto, cosmetics, metals, electronics, electroplating, medicine, etc..

Corresponding standard:

Accord with ASTMG53-77, GB﹑GJB﹑MIL﹑ASTM﹑CNS﹑IEC﹑JIS﹑AATCC﹑DIN﹑Fed Test﹑BS﹑SAE,ASTM D4355 ISO-4892, ASTM-G53, D4587,4799, BS-27282, SAE-J2020

Equipment Summary:

This testing chamber can simulate the harm caused by sunlight, rain, and dew. UV uses fluorescent ultraviolet UV lamps to simulate the effect of sunlight, and uses condensed moisture to simulate rain and dew. The tested materials are exposed to light and moisture at a certain temperature. Test in alternate cyclic programs. UV can reproduce the hazards that occur outdoors in months to years in a few days or weeks. UV test data can help you choose new materials and evaluate how changes in formulations affect the durability of new products.

Use:

1. The UV weathering tester is mainly used to simulate the damaging effects of sunlight, humidity and temperature on materials;

2. Material aging includes fading, loss of gloss, strength reduction, cracking, peeling, chalking and oxidation, etc.;

3. The UV weathering tester simulates sunlight, condensation, and natural humidity, and the sample is tested in a simulated environment for several days or weeks, which can reproduce the damage that may occur outdoors for months or years;

4. In the ultraviolet weathering test machine, the fluorescent ultraviolet of the ultraviolet lamp can reproduce the influence of sunlight, and the condensation and water spray system can reproduce the influence of rain and dew;

5. During the entire test cycle, the temperature is controllable;

6. A typical test cycle is usually ultraviolet light irradiation at high temperature and a dark and humid condensation cycle with a relative humidity of 100%;

7. Typical applications are paint coatings, automotive industry, plastic products, wood products, glue, anodic oxide film, etc.

Technical Parameter:

Main feature:

1, Simulated sunlight

The damage of material durability is mainly caused by the sun's ultraviolet ray. We use UV lamps to simulate sunlight in the ultraviolet part of the short-wave, it produces very little visible or infrared spectral energy. We can choose according to different testing requirements of different wavelengths of UV ultraviolet light, because each lamp in the total energy and wavelength of UV radiation are not the same. Usually, UV lamp can be divided into two kinds of UVA and UVB.

2, UV lamp type
UVA-340 lamp: UVA-340 lamps can simulate short-wave UV light in the sunlight excellently, ie sunlight from 365nm to 295nm cutoff wavelength.

UVB-313 lamps: UVB-313 lamps are usually issued by short-wave UV radiation than the Earth's surface in the strong solar ultraviolet radiation, which can speed up the greatest degree of material aging.However, the lamp may have caused some of the material does not meet the actual damage.UVB-313 lamp is mainly used for quality control and research and development, or on the weather ability of materials strong run the test.

UVA-351 lamp: Simulation of UV sunlight through windows, it is the aging of indoor materials for testing the most effective.

3, Moisture condensation environment
In many outdoor environment, the material wet day time can be up to 12 hours.The results show that this result is the main factor of outdoor wet dew, not rain.QUV condensation through a unique function to simulate the outdoor wet erosion.Condensation during the test cycle, the test chamber at the bottom of the reservoir, water is heated to generate super heated steam to fill the entire test chamber, hot steam to the test chamber maintained at 100% relative humidity, and maintain a relatively high temperature.Sample is fixed in the test room wall, so the test sample surface exposed to ambient air in the test room.The outward face of the sample exposed to the natural environment has a cooling effect, leading to internal and external surface of the sample with temperature, the temperature difference causes the appearance of the sample in the whole process of condensation cycle, the test surface always have condensation of liquid water generated.
Because exposure to humid outdoor exposure time up to ten hours a day, so a typical condensation cycle usually lasts several hours.QUV offers two moist simulations.The most widely used is the condensation method, which is to simulate the best way of outdoor wet erosion.All models can be run QUV condensation cycle.Conditions because some applications require the use of water spray in order to achieve practical results, some condensation cycle QUV models can be run either run the water spray cycle.

4, The temperature control in each cycle, the temperature can be controlled at a set value.At the same time the board can monitor the temperature of the thermometer.Higher temperature can accelerate the aging process, while temperature control for reproducibility of the test is also very important

5, The water spray system for some applications, the water spray can better simulate the end use of the environmental conditions.Water spray in a simulated drastic changes in temperature and rainfall caused by the thermal shock or mechanical erosion is very effective.Conditions in some practical applications, such as sunlight, heat together the stroke of showers dissipated rapidly, the material will be dramatic changes in temperature, thermal shock, thermal shock for many materials, this is a part oftest.QUV water spray to simulate thermal shock and / or stress corrosion.Sprinkler system with 12 nozzles, each side in the test room of 6; sprinkler system can run a few minutes and then shut down.This short cooling water samples quickly and create a thermal shock conditions.

6, Irradiation intensity control:

Optional matching light intensity control option available to accurately type and reproducible results; light intensity control system allows users to set different requirements of different test light intensity. Feedback loop devices through its precise control of light intensity; but also can extend the life of fluorescent lamps