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Abrasion resistance of ceramic thin films of ZrO2/SiO2 on stretched grade polymethyl methacrylate substrates
【文件类型】 【消费金额】2.1 【文章页数】7 【会员操作】  
【文章作者】Mandavi, Mohammad;Ghiasi, Ahmad
【文章摘要】      Abrasion resistance of stretched grade polymethyl methacrylate (PMMA) was increased by using the sol gel method to have it coated with a ZrO2/SiO2 thin film. Different molar ratios of Zr(OPr)(4)/Si(OPr)(4) sols were prepared as precursors with propanol. These sols were used for dip coating the stretched PMMA surfaces to establish very smooth thin films of amorphous Zr-O-Si. Fourier Transform Infrared spectroscopy (FT-IR) was employed to study vibrations of Zr O Si bonds within the thin film. The phase analysis was undertaken via X-ray Diffraction (XRD) method. The morphology and thickness of coatings on PMMA were investigated by means of Scanning Electron Microscopy (SEM). The results showed that coating had an amorphous structure with its thickness within the range of 80-100 nm. The water contact angle of PMMA substrates altered from 73 before coating to less than 64 degrees after coating. Once coated, the PMMA substrate had its transparency characteristic (within the UV-vis region) increased. Furthermore, the influences of thermal treatment temperature and molar ratio of precursors (Zr(OPr)(4)/Si(OPr)(4)) on abrasion resistance of the coatings were studied. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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【卷】42 【ISSUE】6 【ISSUEID】815C0073     【文章期份】2016    【发布日期】2016/8/11 17:03:32    点击率:0    打印    关闭
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