Weatherability of Polypropylene by Accelerated Weathering Tests and Outdoor Exposure Tests in Japan

Figure 6

Relationship between PP flexural strength and exposure time in accelerated weathering test machine. are sample codes as indicated in Table 1. A–J are institution codes as indicated in Table 3. ■: xenon 60 W and 63°C or parity condition, □: xenon 180 W and 63°C, ▲: xenon 60 W and 83°C, and ∆: metal halide lamp.