Research Article
Weatherability of Polypropylene by Accelerated Weathering Tests and Outdoor Exposure Tests in Japan
Table 2
Exposure conditions for 100-hour accelerated weathering tests.
| | Number | Irradiance/(wavelengths) | BPT or BST | Chamber temperature | Water spray time per total irradiation | | (W/m2/(nm)) | (°C) | (°C) | (min/(min)) |
| | 1 | 30/(300–400) | 63 ± 3 | 38 | — | | 2 | 50/(300–400) | 63 ± 2 | 38 | — | | 3 | 60/(300–700) | 65 ± 2 | 38 | — | | 4 | 60/(300–400) | 65 ± 2 | 38 | 18/(120) | | 5 | 60/(300–400) | 63 ± 2 | 38 | 18/(120) | | 6 | 60/(300–400) | 63 ± 3 | 38 | 18/(120) | | 7 | 60/(300–400) | 63 ± 3 | 38 | 18/(120) | | 8 | 60/(300–400) | 63 ± 3 | 42 | 18/(120) | | 9 | 60/(300–400) | 65 ± 2 | 52.8 | — | | 10 | 60/(300–400) | 63 ± 2 | 52-53 | — | | 11 | 390/(300–700) | 63 ± 3 | 42 | 12/(60) | | 12 | 390/(300–700) | 63 ± 3 | 38 | 18/(120) | | 13 | 100/(300–400) | 65 ± 2 | 38 | 18/(120) | | 14 | 100/(300–400) | 65 ± 2 | 38 | 18/(120) | | 15 | 100/(300–400) | 65 ± 2 | 38 | 18/(120) | | 16 | 100/(300–400) | 63 ± 2 | 43 | | | 17 | 180/(300–400) | 63 | 21 | | | 18 | 180/(300–400) | 63 ± 3 | 28 | 18/(120) | | 19 | 180/(300–400) | 63 | 28 | 2/(300) | | 20 | 180/(300–400) | 63 ± 3 | — | 18/(120) | | 21 | 180/(300–400) | 63 ± 3 | 33 | 18/(120) | | 22 | 180/(300–400) | 63 ± 1 | 38 | 18/(120) | | 23 | 180/(300–400) | 83 ± 2 | 41 | | | 24 | 255/(300–700) | 63 ± 3 | 40 | 18/(120) | | 25 | 255/(300–700) | 63 ± 3 | 42 | 18/(120) | | 26 | 255/(300–700) | 63 ± 3 | 42 | 18/(120) | | 27 | 255/(300–700) | 63 ± 3 | 43 | 18/(120) | | 28 | 500/(300–700) | 63 ± 3 | 40 | — | | 29 | 500/(300–700) | 63 ± 3 | 40.6 | — | | 30 | 563/(300–700) | 63 ± 3 | 38 | — | | 31 | 1000/(300–400) | | 63 | — | | 32 | | — | 40 | — |
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BST: black standard thermometer temperature. BPT: black panel thermometer temperature.
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