Spring and summer new products release the latest UV aging test chamber

The damage caused by sunlight and moisture in nature to materials causes inestimable economic losses every year. The UV accelerated weathering testing machine can reproduce the damage caused by sunlight, rain and dew. The device performs the test by exposing the material to be tested to a controlled alternating cycle of sunlight and moisture while increasing the temperature. The equipment uses ultraviolet fluorescent lamps to simulate sunlight and can also simulate the effects of moisture through condensation or spray.
In just days or weeks the equipment can recreate the damage that would take months or years outdoors. The damage caused mainly includes fading, discoloration, decrease in brightness, powdering, cracking, blurring, embrittlement, decrease in strength and oxidation. The test data provided by the equipment is extremely helpful in the selection of new materials, improvements to existing materials, or evaluation of compositional changes that affect product durability. Equipment can do an excellent job of predicting the changes a product will encounter outdoors.
Simulation of UV and Sunlight
Although UV light only accounts for % of sunlight, it is the main lighting factor that causes the durability of outdoor products to decrease. This is because the photochemical effects of sunlight increase as the wavelength decreases. It is therefore not necessary to reproduce the entire sunlight spectrum when simulating the damaging effects of sunlight on the physical properties of materials. In most cases only short-wavelength light needs to be simulated. The reason why UV accelerated weathering testers use lamps is that they are more stable than other lamps and can better reproduce test results. There are several different lamps to choose from when using fluorescent lamps to simulate the effects of sunlight on physical properties such as brightness drop, cracking, and peeling. Most of these lamps produce primarily ultraviolet light rather than visible and infrared light. The main difference between lamps is the total energy they produce in their respective wavelength ranges. Different lights will produce different test results. The actual exposure application environment can indicate which type of lamp should be selected.
The advantages of fluorescent lamps are: rapid test results, simplified illumination control, stable spectrum, low maintenance, low price, reasonable operating costs.
- The option to simulate sunlight UV provides an excellent simulation of the sunlight spectrum in the critical shortwave wavelength range - a spectrum that produces only those wavelengths found in sunlight.
- Accelerated testing for degrees can provide test results quickly. The short wavelengths they employ are more intense than light waves typically found on Earth today. Although light with much shorter than natural wavelengths can speed up testing to a certain extent, it can also cause unrealistic degradation of certain materials.
Standard definition: A fluorescent ultraviolet lamp that emits less than % of the total output light energy is usually called a - lamp that emits less than % of the total light energy. A fluorescent ultraviolet lamp that emits less than % of the total output light energy is usually called - Lamp
UV distinction - wavelength range is - wavelength range is
Simulates the effects of rain and dew
Materials outdoors can be exposed to moisture for up to hours a day. Research has shown that this causes The main cause of moisture outdoors is dew rather than rain. The UV accelerated weathering testing machine simulates the influence of outdoor moisture through a series of unique condensation principles. In the condensation cycle of the equipment, there is a water storage tank at the bottom of the box and it is heated to generate water vapor. The hot steam maintains the relative humidity in the test chamber at % and maintains a relatively high temperature. The design of the product ensures that the test specimen actually forms the side wall of the test chamber so that the back of the specimen is exposed to the room ambient air. The cooling effect of the room air causes the surface temperature of the specimen to drop to a level several degrees below the steam temperature. The occurrence of this temperature difference causes the surface of the specimen to always have liquid water generated by condensation during the entire condensation cycle. The product of this condensation is very stable pure distilled water. This pure water improves test reproducibility while avoiding water stain problems.
Since outdoor exposure to moisture can last up to several hours a day, the moisture cycle of the UV accelerated weathering tester generally lasts several hours. We recommend that each condensation cycle last a minimum of hours. Note that the exposure and condensation exposure in the equipment are performed separately and are consistent with the actual climate conditions.
For some applications, water spray can better simulate the environmental conditions of end use. Water spray is extremely useful in simulating mechanical erosion caused by drastic changes in temperature and washout by rain. Roofing, automotive materials and coatings used on metal buildings or structures are often exposed to sudden temperature changes. For example, during a hot summer day when heat builds up and then suddenly dissipates due to heavy rain. The consequences of this drastic change in temperature are a challenge for many materials. The UV accelerated weathering tester/spray type is specially designed to reproduce this condition.