Effects of Additives on Weather-Resistance Properties of Polyurethane Films Exposed to Ultraviolet Radiation and Ozone Atmosphere

Table 1

Content of the additives in the films.

Sample	Content of the additives/wt.%
	PU	UVAI	UVAO	ANT	HALS
PU	100.0	0	0	0	0
PU-ANT	99.5	0	0	0.5	0
PU-COM	96.7	2.0	0.8	0	0.5