UV aging test chamber-Fornitore globale

No. 5E-082, Trading Plaza, No. 2, South China City, No.1 South China Avenue, Pinghu Town, Longgang District, Shenzhen City

The UV series test chamber can simulate the hazards caused by sunlight, rainwater, and dew, using fluorescent ultraviolet (UV) lamps to simulate the effect of sunlight exposure, and using condensed moisture to simulate rainwater and dew. The tested material is rotated in a cyclic program of alternating light and moisture at a certain temperature for testing. By conducting tests for several days or weeks, it is possible to reproduce the hazards that have occurred outdoors for months or years. The types of hazards include fading, discoloration, loss of gloss, powdering, cracking, turbidity, foaming, brittleness, strength degradation, and oxidation. UV test data can help you select new materials, improve existing materials, and evaluate how changes in formulations affect product durability. In terms of the trend of material changes when placed outdoors,

1、 Equipment Name: UV Aging Testing Machine
2、 Technical indicators
1. Model: CQ-UV300 (Intelligent)
2. Temperature range: RT+10 ℃~70 ℃
3. Temperature uniformity: ± 3 ℃ Temperature fluctuation: ± 0.5 ℃
4. Humidity range: ≥ 75%RH
5. Center distance inside the lamp tube: 65~70mm
6. Distance between the test sample and the center of the lamp tube: 55mm
7. UV lamp: UV-A340 wavelength range 290-400nm (peak 340nm)
8. Standard test piece: 75 × 150mm
9. Radiation intensity: 0.5W/m2/nm
10. Spray system: The spray time is 18MIN, and the stop time is 108MIN, which can be adjusted.
11. Compliance with standards: GB/T 14522-93 ASTM G 154,ISO 4892-1 ISO 11507 ASTMD 4329

3、 Structure and Material
1. Studio size: 450 × 1165 × 500mm (depth × width × height)
2. External dimensions: D600XW1325XH1480mm
3. Inner liner material: SUS304 stainless steel plate
◎ Shell material: SUS304 stainless steel plate
4. Lamp tube: UVA-340 ultraviolet lamp tube, 8 pieces in two rows, 40W/piece (12 pieces in total)
5. Water source and consumption: 8 liters/day of clean water or distilled water (to be provided by the customer)
6. Control system: touch screen intelligent controller

Serial Number	name	Origin brand
1.	True color touch screen controller	Taiwan QTEST
2.	UV lamp UVA (standard)	ATLAS UVA-340 in the United States
3.	AC contactor	China Chint
4.	timer	OMRON Japan
5.	over temperature protection	South Korea RAINBOW
6.	Solid state relay SSR	China Mager MAGER
7.	temperature sensor	Taiwan Xuanrong
8.	Leakage switch	China Chint
9.	circulating fan	Taiwan LTH
10.	heater	Taiwan Longxing
11.	Spray water pump	Guangdong Lingxiao Mercury Industry Group

4、 Experimental equipment
The structure of the test chamber is made of corrosion-resistant metal materials, including 8 fluorescent ultraviolet lamps, a water tray, a test sample holder, and temperature and time control systems and indicators.
2. The lamp power is 40W and the lamp length is 1200mm. The range of the uniform working area of the test box is 900 × 210mm.
3. The lights are installed in four rows, divided into two rows. The tubes of each row of lights are installed in parallel, and the center distance of the lights is 70mm.
4. The test sample is fixedly installed at a position 50mm away from the nearest parallel plane of the lamp surface. The test sample and its bracket form the inner wall of the box, and their backs are exposed to cooling air at room temperature due to the temperature difference between the test sample and the air inside the box. To create stable condensation conditions on the surface of the test sample during the condensation stage, the test chamber should generate natural air convection through the outer wall of the chamber and the channel of the test sample at the bottom.
5. Water vapor is generated by a water tray located at the bottom of the heating box, with a water depth not exceeding 25mm, and equipped with an automatic water supply controller. The water tray should be regularly cleaned to prevent the formation of scale.
The temperature of the test chamber is fixed with a width of 75mm, a height of 100mm, and a thickness of 2.5mm The sensor on the black aluminum plate (blackboard) is used for measurement, and the blackboard should be placed in the central area of the exposure test. The measurement range of the thermometer is 30-80 ℃, with a tolerance of ± 1 ℃ The control of lighting and condensation stages should be carried out separately, while the condensation stage is controlled by the heating water temperature.
7. The test chamber should be placed in a test room with a temperature of 15-35 ℃, 300mm away from the wall, and should prevent the influence of other heat sources. The air in the test room should not circulate strongly to avoid affecting the lighting and condensation conditions.

5、 Experimental conditions
1. The fixed device for the test sample is placed on the test rack, facing the fluorescent lamp. When the sample rack is not filled with the sample, a blackboard is needed to fill the rack and keep the inner wall of the test box closed.
2. Test temperature. When illuminated, three temperatures of 50 ℃, 60 ℃, and 70 ℃ can be used, with 60 ℃ being the preferred temperature; The temperature during the condensation stage is 50 ℃, with a temperature tolerance uniformity of ± 2.
4. The condensation cycle for each illumination can be selected from two cycles: 4H illumination and 4H condensation, or 8H illumination and 4H condensation.
After the first illumination of 400-450H, each row of lamps needs to be replaced with a fluorescent lamp, and the other lamps should be compensated for the losses caused by lamp aging according to the lamp cycle and replacement method. This operating mode ensures that the service life of each lamp tube is between 1600-1800H.
When replacing the lamp tube, the water tray should be wiped dry and cleaned to avoid the formation of scale.

6、 Test samples and performance evaluation
1. Appearance evaluation: The evaluation of coatings mainly focuses on appearance, and plastic and rubber can also be evaluated for appearance when necessary. The inspection items mainly include gloss, color changes, powdering, spots, bubbles, cracks, and dimensional stability. Quantitative item testing should be carried out using instruments as much as possible, such as gloss and colorimeter.
2. Evaluation of mechanical and other properties: Generally, rubber materials are measured for tensile strength, elongation, hardness, impact strength, elongation at break, tensile strength, and bending strength. If necessary, other performance testing items may be specified.

7、 Equipment usage conditions
1. Voltage: single-phase 220V ± 10%; 50 Hz；
2. Environmental temperature: 5～35℃；
3. Environmental humidity:< 85%R.H（25℃）；
4. Atmospheric pressure: 86～106Kpa；
5. Environmental conditions: There is no strong vibration, strong electromagnetic field interference, high concentration dust and corrosive substances around the equipment site, and no direct sunlight or radiation from other heat sources.
6. The equipment should be placed horizontally in a well ventilated laboratory, with sufficient space around for operation and maintenance.

10After sales technical services
1. Under the condition of complying with product precautions, installation and usage rules, the product is free of charge for 12 months from the date of shipment for any faults caused by the quality of the product itself, and is responsible for lifelong maintenance services.
2. If there is a quality problem with the product, we will respond to the repair call (or fax) within 15 minutes. If the problem cannot be solved over the phone, our professional maintenance personnel will come to the site within 24 hours in Guangdong Province and 48 hours outside Guangdong Province for on-site handling.

11、 Product image:
UV紫外老化试验箱