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

Table 5

Outdoor exposed PP test pieces at place (latitude and longitude) with conditions for outdoor exposure tests.

Institution	Latitude	Longitude	Test pieces	Compass bearing	Elevation
Hokkaido	N43°4′50′′	E141°20′15′′	①, ④, ⑤	South	C
Akita Prefecture	N39°43′	E140°6′	①, ④, ⑤	South	B
Iwate Prefecture	N39°40′29′′	E141°7′55′′	②, ③, ⑥	South	C
Yamagata Prefecture	N38°14′	E140°17′	②, ③, ⑥	South	C
Toyama Prefecture	N36°36′34′′	E136°54′56′′	①, ④, ⑤	South	C
Tochigi Prefecture	N36°19′8′′	E139°34′14′′	①, ④, ⑤	South	A
Ibaraki Prefecture	N36°16′42′′	E139°53′4′′	②, ③, ⑥	—	—
Fukui Prefecture	N36°7′0′′	E136°12′10′′	②, ③, ⑥	South	A (26°)
Tokyo	N35°37′6′′	E139°46′46′′	②, ③, ⑥	South	C
Chiba Prefecture	N35°36′45′′	E140°9′5′′	①, ④, ⑤	South	C
Gifu Prefecture	N35°21′5′′	E136°44′33′′	①, ④, ⑤	South	E (90°)
Nagoya City	N35°7′10′′	E136°53′20′′	②, ③, ⑥	South	A (25°)
Kyoto City	N34°59′32′′	E135°44′41′′	①, ④, ⑤	South	E
JCII (Osaka)	N34°40′13′′	E135°34′12′′	②, ③, ⑥	—	—
Osaka Prefecture	N34°26′37′′	E135°26′41′′	①, ④, ⑤	South	B
Hiroshima Prefecture	N34°13′38′′	E132°35′10′′	②, ③, ⑥	South	D (5°)
Kochi Prefecture	N33°34′23′′	E133°34′44′′	②, ③, ⑥	South	C
Kumamoto Prefecture	N32°47′5′′	E130°46′1′′	②, ③, ⑥	—	—
Miyazaki Prefecture	N32°2′15′′	E131°15′19′′	①, ④, ⑤	South	A (22°)
Kagoshima Prefecture	N31°44′14′′	E130°42′54′′	①, ④, ⑤	South	C

Elevation: A; Latitude – 10°, B; 30°, C; 45°, D; 5–10°, E; other.