教授
硕士生导师
教师拼音名称:wangzhaobo
学位:工学博士
职称:教授
学科:材料物理与化学
材料学材料加工工程材料科学与工程其他专业邮箱:
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2019-09-15 山东省优秀教师
2019-05-16 山东省优秀研究生指导教师
2020-12-10 青岛市高校教学名师
2019-09-04 青岛市教书育人楷模
2019-09-15 青岛市新时代最美劳动者
2020-11-10 山东省大学生高分子实用技术大赛“优秀指导教师”
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关键字:dispersions; nanocomposites; polystyrene; rheology
摘要:TiO2 nanoparticles were introduced into high-impact polystyrene (HIPS) in the form of a master batch in which TiO2 was predispersed in composites of HIPS and ethylene-vinyl acetate copolymer (EVA) by melt compounding. The resulting materials were analyzed with a Rosand Precision rheometer, transmission electron microscopy, atomic force microscopy, and Ultraviolet-visible light spectrophotometry. The results showed that the introduction of TiO2 nanoparticles into HIPS influenced the apparent viscosity of the composites to a rather small extent. The addition of EVA could regulate the rheological behavior of the HIPS/TiO2 master batch greatly. EVA helped the dispersions of the agglomerates of TiO2 nanoparticles in the flow; this was featured by the distinct yielding in the flow after the introduction of EVA, as well as the large change in the non-Newtonian indices. The dispersions of the HIPS/TiO2 master batch in the HIPS matrix were improved greatly by the addition of EVA. TiO2 nanoparticles were dispersed randomly in HIPS/EVA/TiO2 nanocomposites. The dispersion improvement of the HIPS/EVA/TiO2 master batch was also proved by atomic force microscopy and ultraviolet-visible spectroscopy investigations. The mechanical properties of HIPS/EVA/TiO2 nanocomposites with low TiO2 contents were slightly higher than those of pure HIPS. (c) 2006 Wiley Periodicals, Inc.
卷号:100
期号:6
是否译文:否