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Principle of Xenon Lamp Test Chamber from Dongguan Kunlun Testing Instrument Co., Ltd.
Click:879 Release time:2017-02-20

Principle of Xenon Lamp Test Chamber from Dongguan Kunlun Testing Instrument Co., Ltd.

 

The sun is the protection of any creature on earth, and it brings light and warmth. However, excessive light and steam generated by light can also cause harm, especially for the production of materials and products, resulting in difficult to estimate economic losses annually. Damage mainly includes fading, yellowing, discoloration, strength reduction, embrittlement, oxidation, brightness decline, cracking, blur and powder. For products and materials that are exposed directly to sunlight, they are at greatest risk for light damage.

In order to make future products to adapt and eventually fight against sun and moisture damage, we use xenon lamp weather resistance test equipment and UV weather resistant test equipment.

 

Xenon lamp weather resistance test equipment can simulate the full sun spectrum of xenon arc lamp to reproduce the existence of different environments of destructive light waves. This equipment can provide the corresponding environmental simulation and accelerated test for scientific research, product development and quality control. Xenon lamp weather resistance test equipment can be used for new material selection, improvement of existing materials or assessment of material composition changes after the change in durability and other tests. Equipment can be a good simulation in different environmental conditions, the material exposed to the sun produced changes. The device measures the lightfastness of the material by exposing the material to ultraviolet (UV), visible and infrared light. It uses a filtered xenon arc lamp to produce the full sunlight spectrum with the greatest agreement with the sun. The xenon arc lamp, which is reasonably filtered, is the best way to test the sensitivity of the product to ultraviolet and visible light over longer wavelengths in direct sunlight or through sunlight.

 

When you expose the product to direct sunlight in the outdoors, the time during which the product experiences maximum light intensity is a few hours. Even so, the worst exposure takes place only in the hottest weeks in the summer. Xenon lamp weather test equipment can speed up your testing process, because through the program control, the device can be your product 24 hours a day exposed to the sun in the summer sunshine equivalent to the environment. Exposure to exposure is much higher than that of outdoor exposure in average light intensity and light hours / days. Thus, the test results can be accelerated.

 

Due to prolonged exposure to fluorescent lamps, halogen lamps or other luminous lamps, products placed at retail outlets, warehouses or other environments will also undergo significant photodegradation. Xenon lamp weather resistance test equipment can also simulate the reproduction of such commercial lighting environment generated by destructive light, and can be higher intensity to speed up the test process. The device uses a full-spectrum xenon arc lamp to simulate destructive light waves in the sun, including UV, visible and infrared light. Depending on the desired effect, the xenon lamp light is usually filtered to produce a suitable spectrum, such as a direct sunlight spectrum, through a glass window of the solar spectrum or UV spectrum. Each filter will produce a different light energy distribution. Optical irradiance refers to the ratio of light energy irradiated on the plane. The equipment must be able to control the intensity of light irradiation to achieve the purpose of accelerating the test and reproducing the test results. Changes in light irradiance can affect the rate of deterioration of the quality of the material, and changes in the wavelength of the light (such as the energy distribution of the spectrum) will also affect the speed and type of material degradation. The xenon lamp chamber is irradiated with a light-sensitive probe, also known as a solar eye, a high-precision light control system that compensates in time for light energy degradation due to lamp aging or any other changes. The sun's eye allows you to select the appropriate light irradiance during the test, and even choose the equivalent of summer light at noon. The solar eye can continuously monitor the irradiance in the irradiation chamber, and can keep the irradiance at the work setpoint by adjusting the power of the lamp. As a result of prolonged work, when the irradiance dropped below the set value, you need to replace a new lamp to ensure that the irradiance is normal.

 

The life of the lamp depends on the level of irradiance used, and the lamp life is typically 1000 hours. Lamp replacement is quick and easy. Long-term filters provide protection for the desired spectrum. In addition to the photodegradation test, the xenon lamp weather resistance test equipment can also simulate the impact of outdoor moisture on material damage by adding moisture and water spray options. Moisture is also a major factor in the destruction of some of the material, the higher the moisture content will accelerate the destruction of the material. Humidity can affect the degradation of indoor and outdoor products, such as various textiles. This is because when the material tries to maintain a moisture balance with the surrounding environment, the material itself is subjected to increased physical stress. Therefore, when the atmospheric humidity range is larger, the material is subjected to greater overall stress. The negative impact of humidity on the weatherability and non-fading properties of the material has been widely recognized. The wet function of this equipment can simulate the indoor and outdoor moisture on the material. The device provides relative humidity control, which is important for many moisture-sensitive materials, and many test protocols require humidity control. The use of water spray function, greatly expanded the equipment can simulate the climate and environmental conditions.

 

As a result of frequent erosion from the rain, the wood coating layer, including paint and coloring agent, will be the corresponding erosion phenomenon. This rainwater scuffing action scours the paint layer that has anti-biodegradation on the surface of the material, exposing the material itself directly to the destructive effects of UV and moisture. The rain shower function of the xenon lamp chamber can reproduce this environmental condition to enhance the relevance of certain coatings to climate aging tests. The spray cycle is completely controlled by the program and can be carried out in a light or no light cycle. In addition to simulated moisture degradation of materials, but also can effectively simulate the temperature upheaval and rain erosion process. Roof, automotive parts and metal buildings or components such as the outer coating will encounter sudden temperature changes. For example, the hot summer days make the heat inside the material pile up, and the sudden showers will make the heat quickly dissipated. This dramatic change in temperature is a challenge and a test for many materials. The water spray function of the device can reproduce the effect of this environmental condition on the material. Infrared radiation from the lamp can rebuild the heat accumulation process, while the cold water spray is the effect of temperature drastic changes. During the rain shower cycle, the temperature is not controlled.

 

Water jet system water quality using deionized water (solid content of less than 20ppm), with the water level of the storage tank, the top of the studio installed two nozzles, the water is recyclable, the water pressure in the 0.12 ~ 0.15Mpa Adjustable. Xenon lamp test chamber heating system using far-infrared nickel-chromium alloy high-speed heating electric heater; high temperature, humidity, light completely independent system (non-interference); temperature control output power by microcomputer calculus, to achieve high precision and high efficiency Electricity benefit.  Equipment humidification system use external boiler steam humidifier, with water level automatic compensation, water alarm system, far infrared stainless steel heating furnace, and  the system is with the channel coordinated control.