摘要
目的研究特种工程塑料聚醚醚酮(PEEK)在紫外光照射实验室加速条件下的老化行为。方法对PEEK塑料采取紫外线光老化方式进行试验,对老化前后的样品进行外观变化、力学性能、热性能、微观结构表征与分析,明确紫外环境因素对材料的性能影响,进而确定PEEK塑料在紫外光条件下的老化行为。结果随着紫外光老化时间的增加,PEEK样品表面变黄,颜色加深,出现鼓包与裂纹等宏观与微观损伤。样品内部力学性能、热性能、红外特征吸收峰、元素含量与价态没有明显变化,样品表面热性能下降,傅里叶变换衰减全反射红外光谱(ATR-FTIR)特征吸收峰变化明显。结论PEEK塑料表面对紫外光比较敏感,在紫外光的照射下容易发生表层的分解,短时间内不会引起材料整体热性能及力学性能的明显变化。
The work aims to study the aging behavior of special engineering plastic polyether ether ketone(PEEK)in ultra-violet irradiation.The PEEK plastic was tested by ultraviolet light accelerated aging.Appearance change,mechanical properties,thermal properties,and microstructure of aged samples were analyzed and characterized to determine the effect of ultraviolet ir-radiation environment factors on material properties and further determine the aging behavior of the PEEK plastic in ultraviolet irradiation.With the increase of the ultraviolet aging time,various changes happened to PEEK sample,including surface turning yellow,darken color,bulge and crack appearing.Meanwhile,the mechanical and thermal properties,infrared characteristic ab-sorption peak,element content and valence state in the PEEK sample did not show significant changes.The thermal properties on the sample surface reduced.There was apparent change in the characteristic absorption peak of the Attenuation Reflectance Fourier Transformation Infrared Spectrometry(ATR-FTIR).The above results demonstrate that PEEK was sensitive to ultraviolet radiation.It is likely to suffer from surface decomposition in ultraviolet radiation.But it would not cause apparent change in overall mechanical and thermal properties of the material in a short period.
作者
孙岩
王登霞
李家恺
钟勇
谢可勇
安琪
王新波
李晖
SUN Yan;WANG Deng-xia;LI Jia-kai;ZHONG Yong;XIE Ke-yong;AN Qi;WANG Xin-bo;LI Hui(Shandong Institute of Non-metallic Materials,Shandong Jinan 250031,China;Southwest Institute of Technology and Engineering,Chongqing 400039,China)
出处
《装备环境工程》
CAS
2023年第8期98-104,共7页
Equipment Environmental Engineering
基金
国防技术基础科研项目(JSHS2019209C001,JSHS2019207B001,JSHS2020209B007)。
关键词
特种工程塑料
聚醚醚酮
紫外光老化
力学性能
老化行为
微观性能
special engineering plastics
polyether ether ketone
ultraviolet light aging
mechanical properties
aging be-havior
microscopic performance
