汽车外饰塑料户外曝晒与氙灯老化试验结果对比  

Comparison between Outdoor Exposure and Xenon Lamp Aging Test for Automotive Exterior Trim Plastics

作　　者：罗茜元 王位 蓝永豪 孙鹏飞 王志白 Luo Xiyuan;Wang Wei;Lan Yonghao;Sun Pengfei;Wang Zhibai(Changan Automobile Global R&D Center,Chongqing 401120)

机构地区：[1]长安汽车工程研究总院,重庆401120

出　　处：《汽车工艺与材料》2025年第3期61-68,共8页Automobile Technology & Material

摘　　要：为研究外饰塑料在户外曝晒和氙灯老化试验中的结果是否一致,选用了8种材料开展试验,对比了外观、色差、光泽度和拉伸强度,并利用相关系数分析了二者之间的相关性。研究结果显示,不同材料的氙灯老化和户外曝晒的结果不同。其中,6种外饰塑料在海南地区曝晒后比敦煌地区曝晒后的老化程度更严重。对于聚甲基丙烯酸甲酯、丙烯腈-丁二酸-苯乙烯合金(PMMA+ASA)、聚碳酸酯(PC)和聚甲基丙烯酸甲酯(PMMA),SAE J2527不能准确模拟海南地区的曝晒结果,氙灯老化4 000 kJ后与户外曝晒2年后的拉伸强度变化率基本相同。To in vestigate the consistency of results from outdoor exposure and xenon lamp aging tests on exterior plastics,8 kinds of materials are selected to compare their appearance,clolr difference,gloss and tensile strength,and correlation coefficient is used to analyze the correlation between the two tests.The research results show that results of xenon lamp aging and outdoor exposure vary for ditferent materials,among which 6 materials have more severe results after Hainan exposure than Dunhuang exposure.For PMMA+ASA,PC and PMMA,SAE J2527 cannot accurately simulate exposure results in Hainan region.Furthermore the changes of tensile strength after xenon arc exposure 4 000 kJ are the same as 2 years outdoor exposure.

关 键 词：老化 外饰塑料 户外曝晒 氙灯老化 

分 类 号：U465.4[一般工业技术—材料科学与工程]