Methods to test anti -aging and light stability often cause controversy. Over the past few years, all kinds of methods have been applied. Now most researchers have used natural exposure methods, Q-SUN Xenon arc lights or QUV accelerate aging test equipment. There are many advantages of natural exposure testing methods, which are practical, cheap, and easy to operate. However, most manufacturers are unwilling to wait for a few years to observe whether a new improved product design has really improved.

Climate and sunshine are the main causes of damage to coatings, plastic, ink and other polymer materials. This damage includes loss of light, fading, yellow change, cracking, peeling, crispness, reduced strength and layering. Even the indoor light and the solar light transmitted through the glass window will make some materials aging, such as the fading or discoloration of pigment, dyes, etc. For many manufacturers, the aging and optical resistance of products are extremely important. Equipment for accelerated detection and light stability is widely used in research and development, quality, control, and material testing. These testing equipment provides fast and repeated test results. In recent years, laboratory testing equipment with low prices and convenient use has been developed, including QUV  UV aging test chamber conforms to ASTM G 154) the lamp test chamber according to ASTM G155.

Xenon Lamp Aging Test Chamber and UV Aging Test Chamber are widely used for extensive accelerated aging testing equipment. The test principles of these two testing equipment are different. The lamp test chamber simulates all the spectrum of sunlight, including ultraviolet rays (UV), visible light, and infrared (IR). It is used to test many products. These products are more sensitive to long -wave bands, visible light and infrared rays of ultraviolet rays.

UV aging test chamber cannot simulate the full spectrum sunlight. The principle is that for the durable materials exposed outdoors, the short -wave band of ultraviolet rays 300 ~ 400 nm is the main cause of aging damage. It can be seen that in the short -wave area of ultraviolet rays, that is, from 365 nm to the low band of sunlight, QUV can simulate the sunlight well. However, it will be powerless for the longer wavelength.

The method of testing depends on the test needs, and each method may be very effective. The appropriate detection equipment should be selected according to the test products or materials, application conditions, the degradation mode and budget considered.

LISUN has developed and produced the Xenon Lamp Aging Test Chamber and UV Aging Test Chamber. Customers can choose the right test equipment according to their test requirements.

1. UV light aging test chamber structure:

1. The structure of the test chamber is made of corrosive metal materials, including 8 fluorescent ultraviolet lights, water disks, test sample racks and temperature, time control systems and indicators.
2. The lamp power is 40W, and the length of the lamp is 1200㎜. The scope of a uniform working area of the test chamber is 900 × 210㎜.
3. The lights are installed into four rows, which are installed in two rows. Each row of lamps is installed in parallel. The center distance of the lamp is 70㎜.
4. The test sample is fixed in the position of the near -parallel surface 50㎜ on the surface of the phase light. The test sample and its bracket form the inner wall of the chamber. Their back is exposed to the cooling air of the room temperature. Essence The condensation stage on the surface of the test sample generates stable condensate conditions. The test chamber should generate natural air convection by the passage of the bottom chamber and the channel of the test sample.
5. The water steam is generated by a low water disk with a low heating chamber. The water depth is not greater than 25㎜, and there is an automatic water supply controller. The water disk should be regularly cleaned to prevent the formation of scale.
6. The temperature of the test chamber is measured by the sensor on the fixed width 75㎜, height 100㎜, thickness 2.5㎜. The black aluminum plate (blackboard) is measured. The blackboard should be placed in the central area of the exposed test. The measurement range of the thermometer is 30 ~ At 80 ° C, the control of the container is ± 1 ℃. The control of the light and condensation stage should be performed separately. The condensation stage is controlled by heating water temperature.
7. The test chamber should be placed in a laboratory with a temperature of 15-35 ° C, 300㎜ from the wall, and should prevent the effects of other thermal sources. The air in the laboratory should not be strongly circulated to avoid affecting the light and condensation conditions.

 The reason why UV aging test chamber uses UV lights is that they are more stable than other lamps and can better reproduce the test results. The impact of fluorescent UV light simulation on the physical properties, such as decreased brightness, cracking, peeling, etc.,. There are several different UV lights to choose from. Most of these UV lights mainly produce ultraviolet light, not visible light and infrared light. The main differences of lamps are reflected in the differences in UV’s total energy generated by them in their respective wavelengths. Different lights will produce different test results. The actual exposure application environment can indicate which type of UV light should be used.

UVA-340, the choice of simulated sunlight ultraviolet rays

The UVA-340 can simulate the solar spectrum of the critical short wave length range, that is, the wavelength range with a spectrum of 295-360nm, and the UVA-340 only generates the UV wavelength spectrum that can be found in the sun.

UVB-313, for a large degree of acceleration test

UVB-313 can quickly provide test results. The short wavelength UVs they use are stronger than the UV light waves that are currently found on the earth. Although these UV light that is much shorter than the natural wavelength can accelerate the experiment largely, it also causes inconsistent and actual degeneration damage to certain materials.

Standard definition of a fluorescent ultraviolet lamp with a light below 300nm, which is 2 % of the total output light, is usually called UV-A light. The light can be greater than a fluorescent ultraviolet lamp with a total output light below 300nm. , Usually called UV-B light.

UV-A wavelength range is 315-400nm; UV-B wavelength range is 280-315nm

The advantages of fluorescent lamps are: quickly obtain test results; simplified light control; stable spectrals; only less maintenance; cheap price and reasonable operation costs.

2. Xenon Lamp Aging Test Chamber introduction:

Xenon lamp aging test chamber adopts xenon arc lamp which can imitate the full spectrum of sunlight to reappear destructive spectral wave that exists in different environment. It can provide the corresponding simulation environment and accelerated test for scientific research, product development and quality control. Xenon lamp aging test chamber can be used for the choice of new materials, improving of existing materials, or the test of evaluating the durability of material composition when it is changed. It can imitate different environmental conditions to observe changes of the materials which were exposed in the sun. Xenon lamp aging test chamber is designed according to ISO 4892-1, ISO 4892-3, GB/T16585-1996, GB14522-93, GB/T16422.3-97, D2565 ASTM D2565 and other relevant standards.

Xenon Lamp Aging Test Chamber include water-cooled Xenon lamp chamber and air-cooled xenon lamp chamber.
Technical parameters of climate test chamber for water-cooled Xenon lamp:

• Model: XD-80LS Working size: 800*800*800mm
• Temperature range: RT+10℃～80℃(Adjustable)
• Temperature deviation: ±2℃; Temperature fluctuation: ±0.5℃
• Humidity range: 65%-98%RH; Humidity fluctuation: ±3%
• Wind speed: ≤1.5m/s Sample rack speed: 5-12r/min(Adjustable)
• Rainfall time: 0～9999min(Adjustable)
• Xenon lamp source: Water-cooled lamp
• Quantity of Xenon lamps: 1 PCS
• Xenon Lamp Power: 6000W
• Distance between sample holder and lamp: 200~375 mm
• Illumination time: 1～9999h、m、s continuously adjustable
• Temperature control instrument adopts high precision digital microcomputer integrated controller; Accuracy: 1℃(Display range)
• Resolution: ±0.1℃
• Temperature sensor: PT100 platinum resistance thermometer
• Control Way: Heat balance temperature and humidity control way
• Temperature and humidity control adopts P.I.D+S.S.R system and channel coordinated control
• Equipment feature: with light, rain, temperature, humidity, wind, etc. climate
• Xenon lamp radiation intensity: 0.35w/m²; Wavelength: 200~800nm

Technical parameters of climate test chamber for air-cooled xenon lamp:

• Model: XD-150LF; Working size: 600*760*500mm(L*W*H)
• Temperature Range: RT+10～80℃(Adjustable); Blackboard temperature: 63℃ ±3℃
• Temperature fluctuation: ±0.5℃; Temperature deviation: ±2℃
• Humidity range: 50～95% R•H(Adjustable); Humidity deviation: ≤±2%
• Glass window filter: 1 PC
• Time of raining: 0～9999min; Cycle of raining: 1 ~ 240min, the interval can be adjusted
• Spray time: (Water spray time/no water spray time): 18min/102min or 12min/48min
• Rain water pressure: 0.12～15Mpa; Spray nozzle aperture: Ф0.8mm
• Xenon lamp source: Air-cooled lamp; Quantity of Xenon lamps: 3 PCS
• Xenon lamp power: 1.8KW/PC
• Heating Power: 3KW; Humidification power: 1.5KW
• Distance between sample holder and lamp: 230～280mm
• Sample rack tray: 1 layer turntable
• Wavelength: 200～800nm
• Illumination time: 1～9999h、m、s continuously adjustable
• Irradiance: 0.35w/m² (optional for Radiometer)
• Total Power: 9.5KW

Tags：UV-263LS , XD-80LS