GB/T 16422.3-2022 specifies the method for laboratory light source exposure tests of plastics using fluorescent ultraviolet lamps, applicable to artificially accelerated weathering tests of various plastics under controlled environmental conditions. The standard accelerates material aging by simulating total solar radiation or solar radiation filtered through window glass, combined with factors such as heat and moisture, and clarifies requirements for specimen preparation, environmental control, and result evaluation. It primarily employs instruments such as ultraviolet aging test chambers, radiometers, temperature measuring devices, and wetting devices. Different types of fluorescent ultraviolet lamps can be selected to adjust exposure conditions. By examining changes in the color, mechanical properties, and other characteristics of plastics after aging, the standard provides a unified technical basis for evaluating material weather resistance and predicting service life.
| Status | Active | ||
|---|---|---|---|
| CCS | G31 | ICS | 83.080.01 |
| Release Date | 2022-04-15 00:00:00 | Implementation Date | 2022-11-01 00:00:00 |