8 Lamps Weather Accelerated UV Aging Test Chamber UV aging test box is the most widely used UV accelerated test
equipment in the world, in coatings, ink, plastics, leather,
electronics and other industries widely used. It takes only a few
days or a few cycles to reproduce the damage that can take months
or years outside: ageing including fading, discoloration,
pulverization, blurring, degradation of embrittlement and
oxidation. The damage of sunlight, rain and dew to the material is quickly and
truly reproduced, and the single light resistance or single
moisture resistance of the material is weakened or failed by the
synergistic effect between ultraviolet light and moisture, so it is
widely used to evaluate the climate resistance of the material. UV weatherproof test box meets test standards ASTM D4329-05 of Test Method for Exposure of Light Source in
Plastic Laboratory ASTM of instrument operation methods for UV aging of nonmetallic
materials Fluorescent UV Lamp for Artificial Climate Aging Test of Rubber and
Plastic Materials ISO-4892-3:2006 of fluorescent UV lamps
| I. Equipment performance parameters | | Temperature range | RT+10℃~70℃ | | Humidity range | ≥90 RH | | Irradiance | Adjustable within 2.0 W/m2 | | Effective irradiation area | 1100×550 X 400mm | | UV Lamps | Philips UVA 340 | | UV wavelength | 400nm--280nm |
| Lamp tube specification | 1200 mm/8 long | | Inner Box Size | 1100 wide *550*400 mm high | | Irradiating blackboard temperature | 50℃~70℃ | | Controller | Color Screen Touch Screen Korea (TEMI880) | | Test cycle | 1-9999 hours | | Power supply voltage | 220V 2KW | | The test box can simulate the sunlight of nature (light) humidity
(condensation) rainy days (spray) |
| II. STRUCTURE AND MATERIAL | | Test box space | Wide 1100 x deep 550 x 400 mm high | | | Dimensions | Width 1340 deep 1250 x height 1560 mm | | Unit material | Inside and outside 304 stainless steel | | Location of lamp installation | 8 on top of inner box | | Sprinkler position | Adopt copper tube diameter 0.8 m spray nozzle, Single side control installed on top of unit | | | Position of humidifier | A stainless steel U heating tube is used at the bottom to prevent
leakage and automatic adding water to the inner tank to prevent dry
burning of the heating tube |
| III. CONTROL SYSTEM | | Controller | Korea Sanyuan TEMI880 | | | Control panel size | Color Touch | | Control function | Fixed values and program tests | | Program space | Program Group 100 Repeatable command: up to 999 Memory function of power off program Time adjustment, appointment time start Temperature curve for instrument display Connectable computer (optional) | |
| | 1 blackboard temperature display value: display the actual
blackboard temperature value induced by the probe ,(the same
intensity of irradiation); Set the temperature of blackboard: set the temperature of
blackboard in this experiment. Rain TS settings: set the operation mode of rain (ON/OFF, cycle 1~6
optional). |
| IV. The concept of ageing resistance | | In the process of processing, storage and use of polymer materials,
due to the combination of internal and external factors, their
properties gradually become bad, resulting in the final loss of use
value, this phenomenon is called aging, aging is an irreversible
change, is a common problem of polymer materials, but people can
through the study of the aging process of polymer, take appropriate
anti-aging measures, improve the aging resistance of materials,
delay the rate of aging, in order to achieve the purpose of
prolonging the service life. | | | UVA340: can emit solar wavelengths from 315 nm to 400 nm. Its peak
irradiation is at 340. UVA340 comparison tests for different tests are particularly useful
for best simulating sunlight in the short-wave ultraviolet band | UVA irradiance setting W/m2 0.68 The sun shines at noon in the summer Strong maximum Quick results | Simulated summer noon sun |
| V. UV light | The first-order optical reaction is not sensitive to temperature
change, however, the speed of the secondary reaction is closely
related to temperature change. generally speaking, the reaction
speed will be accelerated with the increase of temperature.
therefore, during the UV exposure test, the temperature control is
very important. it is more important to match the test temperature
used in the accelerated test with the highest temperature
encountered by the material in practical application. The
temperature of the UV process in the equipment is set to any point
in 50℃~70℃, depending on the illumination level and indoor ambient
temperature. The temperature adjustment of the equipment is
accomplished by a series of systems, such as air heater and water
heater, which are directed by a controller with microcomputer
calculus function. | | | VI. Humidity | As the temperature increases, the destructive power of moisture to
the material will increase sharply. Therefore, temperature control
is the most basic requirement in humid overgrowth. Further, the
acceleration effect is required to maintain a high temperature
environment during the wet process. so the temperature in the
condensation process is set to 40℃~60℃ at any point. | |
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