UV aging testing is commonly used for outdoor products, plastic parts, coatings, rubber parts, packaging materials, labels, printed parts, and appearance components of consumer products. Its value is to compare material or process changes under defined exposure conditions, rather than replace every real-use environment.
Items to Confirm in the Test Plan
| Item | Review Focus |
|---|---|
| Light source and condition | Confirm UV light source type, irradiance, temperature, humidity, condensation, spray, or dark-cycle requirements. |
| Exposure cycle | Define test duration, cycle setting, sample rotation, and intermediate inspection points. |
| Sample state | Record color, thickness, surface treatment, coating, printed area, and any preconditioning. |
| Evaluation items | Check color difference, gloss, yellowing, cracking, chalking, peeling, embrittlement, strength, or functional change. |
| Acceptance basis | Confirm acceptable limits based on buyer criteria, product specification, or relevant test method. |
Report Boundary
A UV aging test report should match the tested material, formulation, color, surface treatment, and exposure condition. Changes in material batch, pigment system, coating thickness, outdoor installation angle, or use environment may require further review.
Green Ark Recommendation
Green Ark (Shenzhen) Certification Co., Ltd. recommends defining target use environment, buyer acceptance criteria, and key appearance surfaces before sample submission. For export products, temperature-humidity, salt spray, friction resistance, and adhesion tests can be combined for a more complete weathering assessment.
