摘要
采用酸碱处理的方法对聚酰亚胺(PI)薄膜表面改性。利用万能试验机和热失重仪考察了处理前后PI薄膜力学性能和热性能的变化情况,并通过傅立叶红外光谱仪、原子力显微镜及视频接触角仪对PI薄膜改性前后表面性能进行了表征。结果表明,经酸碱处理后,PI薄膜表面化学组成和表面形貌均发生变化,表面亲水性增大;当处理时间为4min时,力学性能保持在97%以上,热稳定性略有下降;均方根粗糙度从1.057nm增大到3.002nm,接触角从77.32°下降到46.70°,粘接功提高了38.20%。
Polyimide film was modified by acid-base treatment. The mechanical properties and thermal stability were measured by the universal test machine and thermo-gravimetric analysis （TGA）. The surface chemical structure,morphology and hydrophilicity of polyimide films were characterized by Fourier-transform infrared（FT-IR）,atomic force microscopy（AFM）,contact angle measurement. The results show that the acid-base surface modification significantly affects the surface chemical composition and morphology of the polyimide film,and surface hydrophilicity of polyimide film is improved. After 4 min treatment,the mechanical properties are retained over 97%,and thermal stability decreases slightly. The surface roughness increases from 1.057 nm to 3.002 nm,the water contact angle surface decreases from 77.32°to 46.70°,and the work of adhesion increases by 38.20%.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第5期39-42,共4页
Polymer Materials Science & Engineering
关键词
聚酰亚胺薄膜
酸碱处理
表面改性
力学性能
亲水性
polyimide film
acid-base treatment
surface modification
mechanical properties
hydrophilicity
