Box-Type UV Aging Test Chamber

Structure and Materials:

1. Working Chamber Dimensions: 660×1150×600mm (Depth×Width×Height)
2. Overall Dimensions: Approx. 780×1380×1780mm
3. Inner Chamber Material: SUS304 stainless steel plate
   Exterior Material: SUS304 stainless steel plate
4. UV Lamps: UVA-340 fluorescent UV lamps (8 units, 40W each)
5. Water Supply & Consumption: 8 liters/day of purified or distilled water (user-provided)
6. Control System: 7-inch touch screen, PLC programmable controller

Test Equipment:

The chamber is constructed of corrosion-resistant metal materials, equipped with 8 fluorescent UV lamps, sample racks, and temperature/time control systems with indicators.

1. Lamp Power: 40W per lamp.
2. Lamp Arrangement: Lamps are installed in a single row, with two groups of four lamps each controlled by separate switches.
3. Sample Installation: Test samples are fixed at a distance of 50mm from the nearest lamp surface.

Test Conditions:

1. Sample Placement: Test samples are mounted on sample racks.
2. Test Temperature: Adjustable between RT+10~70℃ during light exposure, with a temperature tolerance of ±3℃.
3. Light/Condensation Cycles: Options include 4H light + 4H condensation, 8H light + 4H condensation, or other custom cycles.
4. Lamp Replacement: Replace 1-2 lamps after the first 400–450 hours of use. Subsequent replacements follow a rotational schedule to compensate for lamp aging, ensuring a service life of 1,600–2,000 hours per lamp.

Sample and Performance Evaluation:

1. Visual Assessment:
   • Primarily for coatings (gloss, color change, chalking, spotting, blistering, cracking, dimensional stability).
   • Plastics and rubbers may also be evaluated visually if required.
   • Quantitative measurements are recommended using instruments (e.g., gloss meter, colorimeter).
2. Mechanical and Other Properties:
   • Rubber: Tensile strength, elongation, hardness.
   • Plastics: Impact strength, elongation at break, tensile strength, flexural strength.
   • Additional tests may be specified as needed.

Standards:

Standards Compliance: GB/T 14522-93 (PRC National Standard: Accelerated Weathering Test Methods for Plastics, Coatings, and Rubber Materials in Mechanical Products)

Standard reference: ISO 4892, ASTM G151, G154, D4329, D4587, D4799, SAE J2020

Main parameters

UV Lamps: 8 units
Wavelength Range: UV-A (315~400nm)
Lamp Service Life: 1,500 hours
Temperature Range: RT+10℃～70℃
Temperature Resolution: 0.1℃
Temperature Uniformity: ±3℃
Temperature Control Mode: PID self-tuning control
Humidity Range: ≥75%RH
Distance Between Samples and Lamp Center: 25～45mm
Compliance Standards: GB/T 14522-93 (PRC National Standard: Accelerated Weathering Test Methods for Plastics, Coatings, and Rubber Materials in Mechanical Products)