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Why choose xenon lamp aging test chamber for aging test?
  • 2024-02-06 09:00:48

The xenon lamp climate resistance test uses a xenon arc lamp that can simulate the full sunlight spectrum to reproduce the destructive light waves that exist in different environments. Xenon lamp test chamber equipment can provide corresponding environmental simulation and accelerated testing for scientific research, product development and quality control.


Sunlight is the guarantee for the survival of all living things on the earth. It brings light and warmth. However, excessive light and steam generated by light can also cause damage, especially serious damage to production materials and products, causing inestimable economic losses every year. Damage mainly includes fading, yellowing, discoloration, strength reduction, embrittlement, oxidation, brightness reduction, cracking, blurring and powdering, etc. Products and materials that are directly exposed to sunlight are at greatest risk for the effects of photodamage. In order for future products to adapt to and ultimately resist damage from sunlight and moisture, we use xenon lamp weather resistance test equipment and UV light weather resistance test equipment.


Xenon lamp weather resistance test equipment can be used for tests such as selecting new materials, improving existing materials, or evaluating changes in durability after changes in material composition. The equipment can well simulate the changes caused by exposure of materials to sunlight under different environmental conditions. The equipment measures the light resistance of materials by exposing them to ultraviolet (UV), visible and infrared light. It uses a filtered xenon arc lamp to produce a full sunlight spectrum with maximum match to sunlight. A properly filtered xenon arc lamp is the best way to test a product's sensitivity to the longer wavelengths of UV and visible light in direct sunlight or sunlight through glass. When you expose a product to direct sunlight outdoors, there are only a few hours of the day when the product experiences maximum light intensity. Even then, the most severe exposure occurs only during the hottest weeks of summer.


Xenon lamp climate resistance testing equipment can speed up your testing process, because through program control, the equipment can expose your products to a lighting environment equivalent to the midday sun in summer 24 hours a day. The exposures experienced were significantly higher than outdoor exposures in both average light intensity and light hours/days. Thus, test results can be obtained faster. Products placed in retail locations, warehouses, or other environments can also experience significant photodegradation due to long-term exposure to fluorescent, halogen, or other luminescent lighting.


Xenon lamp climate resistance test equipment can also simulate and reproduce the destructive light produced in such commercial lighting environments, and can speed up the test process with higher intensity. The device uses a full-spectrum xenon arc lamp to simulate the damaging light waves in sunlight, including UV, visible light and infrared light. Depending on the desired effect, the light from the xenon lamp is usually filtered to produce a suitable spectrum, such as direct sunlight, sunlight through a glass window, or UV spectrum. Each filter produces a different distribution of light energy.


Light irradiance refers to the ratio of light energy striking a flat surface. The equipment must be able to control the intensity of light irradiation in order to accelerate the test and reproduce the test results. Changes in light irradiance will affect the rate at which material quality deteriorates, while changes in light wave wavelength (such as the energy distribution of the spectrum) will also affect the rate and type of material degradation. The irradiation of the equipment is equipped with a light sensing probe, also known as the sun eye, a high-precision light control system that can promptly compensate for the decrease in light energy caused by the aging of the lamp or any other changes.


Solar Eye allows the selection of appropriate light irradiance during testing, even the equivalent of midday summer sunlight. The Solar Eye can continuously monitor the light irradiance in the irradiation chamber, and can accurately maintain the irradiance at the working set value by adjusting the power of the lamp tube. Due to long working hours, when the irradiance drops below the set value, a new lamp needs to be replaced to ensure normal irradiance. Lamp life depends on the irradiance level used, with a typical lamp life of 1,000 hours. Lamp replacement is quick and easy. Long-lasting filters ensure the required spectrum is maintained. In addition to photodegradation testing, xenon lamp weathering testing equipment can simulate the damaging effects of outdoor moisture on materials by adding moisture and water spray options. Moisture is also the main factor causing damage to some materials. The higher the moisture content, the faster the damage to materials will be. Humidity can affect the degradation of indoor and outdoor products, such as various textiles. This is because the physical stress on the material itself increases as it attempts to maintain a moisture balance with its surrounding environment.


Therefore, when the humidity range in the atmosphere is greater, the overall stress experienced by the material is greater. The negative impact of humidity on the weatherability and colorfastness of materials is widely recognized. The moisture function of this device can simulate the effect of indoor and outdoor moisture on materials. The device provides relative humidity control, which is important for many moisture-sensitive materials and is required by many test protocols. Using the water spray function greatly expands the climatic and environmental conditions that the equipment can simulate. Due to frequent erosion from rain, the coating layer of wood, including paint and stain, will suffer from corresponding erosion. This rain-wash action washes away the anti-degradation paint layer on the surface of the material, thereby directly exposing the material itself to the damaging effects of UV and moisture.


The rain spray function of the xenon lamp weathering test equipment can reproduce this environmental condition to enhance the correlation of certain coating weathering tests. The spray cycle is fully programmable and can be performed with or without a light cycle. In addition to simulating material degradation caused by moisture, it can also effectively simulate drastic temperature changes and rain erosion processes. Exterior coatings on roofs, automotive parts, and metal buildings or structures are subject to sudden temperature changes. For example, hot summer days cause heat to accumulate inside the material, while sudden rain showers can quickly dissipate the heat. This severe temperature change impact is a challenge and test for many materials. The effect of such environmental conditions on the material can be reproduced through the device's water spray function. The infrared rays emitted from the lamps can reconstruct the heat accumulation process, while the cold water spray produces a dramatic temperature change. During the rain spray cycle, the temperature is not controlled.

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