Novel anti-ultraviolet performances of thin films polyurethane containing nano-mixed oxides CeO2-TiO2. (December 2018)

• Record Type: Journal Article
• Authors: Nhiem, Dao Ngoc; Bac, Nguyen Quang; Dung, Doan Trung; Chuc, Pham Ngoc; Chi, Nguyen Thi Ha; Lim, Duong Thi
• Is Part Of: Advances in mechanical engineering. Volume 10:Number 12(2018)
• Publication Date: 2018-12
• Subjects: CeO2-TiO2 -- hybrid material -- nano-mixed oxides -- anti-ultraviolet -- polyurethane -- thin film; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/1687814018816770
• Languages: English
• ISSNs: 1687-8132

Abstract

The nano-mixed oxides CeO2 -TiO2 was synthesized by gel combustion method using polyvinyl alcohol as fuel and mixtures of titanium trichloride and cerium(IV) nitrate at a relatively low calcination temperature of 550°C for 2 h. The prepared CeO2 -TiO2 nanoparticles with a specific area of 65.70 m 2 g −1 were dispersed in polyurethane matrix in different concentration conditions from 0.0 to 1.5 wt% to study ultraviolet durability following HONDA HES D 6501-97 standards. After 400 h of testing in the QUV accelerate weathering tester, the thin film containing 1 wt% CeO2 -TiO2 nano-mixed oxides has presented the noticeable capacity for absorbing ultraviolet light by only 6.8 g.u change in specular gloss at 60° and ΔE = 3.66 in color difference.