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RT+10℃ ~ 70℃ UV aging test box,Conformity national standard of China
samples and performance evaluation
1. Appearance evaluation: the coating is mainly the appearance evaluation, plastic and rubber when necessary can also conduct appearance evaluation, inspection the main projects are luster, color change, powder, spots, bubbles, cracks and dimensional stability. Use instrument as much as possible implement quantitative item inspection, such as gloss, chromatic aberration meter.
2. Evaluation of mechanical and other properties: tensile strength, elongation, hardness and plastic impact of general rubber materials impact strength, elongation at break, tensile strength, bending strength, and other performance test items may be specified if necessary.
Test equipment
1. The structure of the test box is made of corrosion resistant
metal material, including 8 fluorescent ultraviolet lamps, water
tray, test sample rack and temperature degree and time control
system and indicator.
2. The tube is 40W in power and 1200mm in length. The range of
uniform working area of the test box is 900×210 mm.
3.The lamp is installed in four tiers, divided into two tiers. The
tubes of each tier are installed in parallel. The central distance
of the lamp is 70 mm. A test sample is fixed in a location 50 mm
nearest to the surface of the lamp, the test sample and its
framework constitute the inner wall of the tank , the back of the
tank is exposed to room temperature cooling air due to the
temperature difference between the test sample and the air in the
tank to make the condensation phase on the surface of the test
sample produces a stable condensation condition, and the test box
shall pass through the outer wall of the box and the test sample
from the bottom to produce natural air convection.
4.Steam is produced by heating the water tray at the bottom of the
tank, water depth is less than 25 mm, and has a water supply
automatic controller, water dish should Clean regularly to prevent
the formation of scale.
5. The temperature of the test box is test by a blackboard which
specifications are 75-mm, 100-mm and 2.5mm.For measurement, the
blackboard shall be placed in the central area of the exposure
test. The measuring range of the thermometer shall be 30 ~ 80℃ with
tolerance of
±1℃. The lighting and condensation phases should be controlled
separately. The condensation phase should be controlled by the
heating water temperature.
6. The test box should be placed in a laboratory with a temperature
of 15 ~ 35℃, 300 mm from the wall, and it should prevent other heat
sources influence, the air of the test room should not be strong
circulation, lest affect illumination and condensation conditions.
Material name | Brand | origin |
tube | made in China | China |
Controller | samwon | Korea |
heating tube | custom-made | custom-made |
Ac contactor | schneider | French |
Rectifier | PAK | China |
Dimmers | custom-made | custom-made |
power switch | Double section | China |
Main power switch | schneider | The French |