Weather Resistance of a New Vehicle in Damp-Hot Environment of Hainan

A new type of domestic vehicle was placed in a damp-hot exposed field in Qionghai for one year static exposure test. The change of weather resistance of 245 parts of the vehicle was studied regularly. The natural environment outside the vehicle and the local environments inside and outside the vehicle were monitored. Results show that floccosoids, stripping, foaming, rust, whitening, degumming, chalking, loosenness, rough surface, fiber leakage, sewing, sticking, waterlogging, cracking and other phenomena appeared in different parts of the vehicle after exposure for one year. There was no discoloration (chromatic aberration ΔE_ab^*<1.5) for 40 parts of the vehicle, and 12 parts had very slight color change (1.5 < ΔE_ab^* < 3.0). The average gloss retention rates of front and rear bumpers were greater than 90%. The weather resistance of the new vehicle in damp-hot environment is good in comprehensive assessment, which can provide reference data for other new vehicles' research and development.