The microstructure and property study of tri-layer polyimide/Al2O3 nanocomposite films. (2016)

• Record Type: Journal Article
• Authors: Shi, Hui; Liu, Lizhu; Weng, Ling; Cui, Weiwei
• Is Part Of: International journal of manufacturing technology and management. Volume 30:Number 6(2016)
• Page Start: 443
• Page End: 455
• Publication Date: 2016
• Subjects: polyimide -- Al2O3 -- tri-layer composite films -- mechanical properties -- thermal properties -- electrical properties -- aluminium oxide -- alumina -- pyromellitic dianhydride -- PMDA -- oxydianiline -- ODA -- nanoparticles -- nanotechnology -- thermal stability -- tensile strength -- nanocomposite films -- nanocomposites; Manufacturing processes -- Periodicals; Manufacturing processes -- Automation -- Periodicals; Production management -- Periodicals; 670.427068
• Languages: English
• ISSNs: 1368-2148

Abstract

On the basis of mono-layer composite films, the polyimide/nano-Al2 O3 tri-layer composite films based on pyromellitic dianhydride (PMDA) and 4, 4'-oxydianiline (ODA) were prepared by mixing various proportions of nano-Al2 O3 inorganic particles via in situ polymerisation. Morphology study by scanning electron microscope (SEM) illustrated that the 'sandwich' structure was successfully achieved and nano-Al2 O3 particles were homogeneously dispersed in the PI matrix. The target tri-layer composite films were studied by thermogravimetry analysis (TGA), and corresponding experimental results showed that same as the mono-layer composite films, tri-layer composite films possessed the superior thermal stability than that of pure film, and the thermal stability was improved steadily along with the increment of nano-Al2 O3 doping content. Moreover, comparing to the mono-layer composite films, tri-layer PI/Al2 O3 nanocomposite films had a great deal of improvement in the tensile strength and elongation at break. The tri-layer PI/Al2 O3 nanocomposite films performed the better electric breakdown strength than that of pure films.