某车型在海南湿热环境中的整车耐候性
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摘要
将某国产新车型置于海南琼海湿热自然暴露试验场内进行了为期1a的整车静态暴露试验,定期观测整车245个零部件的耐候性能变化,同时监测车外自然环境和车内外微环境。结果表明:汽车暴晒1a后,整车不同部位分别出现白斑、脱膜、起泡、锈蚀、泛白、脱胶、粉化、松动、表面粗糙、纤维外漏、离缝、发黏、积水以及开裂等现象,40个部位无变色(色差ΔE_(ab)~*<1.5),12个部位有很轻微变色(1.5<ΔE_(ab)~*<3.0),前后保险杆的平均光泽保持率大于90%。综合评价该新车型在湿热环境中耐候性水平为良,可为其他新车型研发提供参考数据。
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 aberrationΔE_(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.
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 aberrationΔE_(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.
引文
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[2]张晓东,王俊,揭敢新,等.乘用车海南湿热环境耐候性失效统计[J].汽车工艺与材料,2015(9):29-30.
[3]刘奎芳,陈洁.塑料在湿热和亚湿热气候大气暴露与人工加速试验相关性探讨[J].环境技术,2001(4):8-13.
[4]王受和,王俊,张晓东,等.基于自然暴露试验的乘用车耐候性研究[J].环境技术,2015(1):43-47.
[5]江鲁,周修源.汽车常用的自然暴露试验方法[J].中国仪器仪表,2009(9):45-50.
[6] TOYODA H,SAKABE H,ITOH T,et al.Weatherability of membrane structure materials as determined by their exposure conditions[J].Fiber,1994,50(10):484-488.
[7]张晓东,王俊,揭敢新,等.汽车整车在海南湿热环境下的大气暴露试验研究[J].汽车工艺与材料,2014(11):40-43.