Flexible transparent projection screen of polycarbonate matrix integrated with functionalized alumina particles. Issue 47 (19th July 2021)

• Record Type: Journal Article
• Authors: Gong, Keqian; Xu, Xiangyang; Liu, Qi; Han, Zexian; Huang, Wei; Huang, Chenyu; Huang, Xiangning
• Is Part Of: Journal of applied polymer science. Volume 138:Issue 47(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-07-19
• Subjects: composites -- optical and photovoltaic applications -- optical properties -- polycarbonates -- synthesis and processing techniques; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.51414
• Languages: English
• ISSNs: 0021-8995

Abstract

Abstract: Solution blending approach was introduced to prepare flexible Polycarbonate (PC)‐based composited films with excellent transparent projection performance. After modified by an aluminate coupling agent DL‐411(ACA‐1), alumina (Al2 O3 ) possesses improved dispersity. There may form oxygen bridge between aluminum atoms on Al2 O3 and ACA‐1. With the long aliphatic chain directing outwards, the compatibility between PC and modified Al2 O3 was significantly improved. The dispersion of Al2 O3 particles in PC was therewith promoted. After vacuum drying, well‐blended mixtures were developed and PC films containing Al2 O3 clusters can be prepared. The composite films have good light transmission and diffuse reflection effects. When Al2 O3 /PC mass ratio is beneath 0.2, the composited films possess excellent transparency comparable with pure PC film. The diffuse reflection performance of PC composite films is gradually enhanced with the increase of Al2 O3 content. When Al2 O3 /PC ratio attains 0.1, the visible light reflectance amounts 15%, which can even exceed 30% with the ratio reaches 0.5. The composite films show improved resistance to UV irradiation as the visible light reflectance and transparency are comparable to un‐radiated samples. The hydrophobicity of composite films with a certain Al2 O3 amount increases, which brings forth good anti‐moisture property for these transparent projection screen films. Abstract :