PET/nano-MgO复合材料的性能研究  

Study of the Performance of PET/Nano-MgO Composite

作　　者：杨晓明[1] 王铎[1] 田耘[2] 吕叶[1] 李研[1] 崔荣康 

机构地区：[1]陕西理工学院材料科学与工程学院,陕西汉中723000 [2]汉中职业技术学院,陕西汉中723000

出　　处：《中国塑料》2015年第6期49-52,共4页China Plastics

基　　金：陕西省教育厅项目(14JK1162);陕西省科学研究项目(2014K08-18)

摘　　要：通过熔融共混法制备了聚对苯二甲酸乙二醇酯(PET)/纳米氧化镁(nano-MgO)复合材料,对该复合材料的力学性能进行了测试,并用扫描电子显微镜对nano-MgO在复合材料中的分散情况进行了观测。通过差示扫描量热法研究了复合材料的结晶性能,通过热重分析研究了复合材料的热稳定性,通过紫外可见光谱研究了复合材料的紫外屏蔽性能。结果表明,nano-MgO含量为1%时复合材料的缺口冲击强度比纯PET高15%,nano-MgO含量为2%时复合材料的拉伸强度比纯PET高8%;nano-MgO在复合材料中分散均匀;nano-MgO含量为2%时复合材料的结晶半峰宽为7.7℃,比纯PET低15%;nano-MgO含量为2%时复合材料的熔点为252.4℃,比纯PET高4.1℃;nanp-MgO含量为3%时复合材料屏蔽紫外线的截止波长为300 nm,比纯PET高11%。Composites of polyethylene glycol terephthalate(PET) and nano magnesium oxide(nano-MgO)were prepared by melt blending.The ultraviolet-shielding property of the composites was tested by ultraviolet-visible absorption spectra.It is shown that when the content of nano-MgO was 1%,the notch impact strength of the composite was 15%higher than neat PET.When the nano-MgO content was 2%,the tensile strength of the composite was 8%higher than neat PET.SEM showed that the nano-MgO was well-dispersed in the composites.When the content of nano-MgO was 2%,the half width of the crystallization peak of the composite was 7.7℃,which was 15%lower than neat PET.The import of nano-MgO could improve the melting point of PET.When the content of nano-MgO was 2%,the half width of the melting point of the composite was 252.4℃,which was 4.1℃ higher than neat PET.When the content of nano-MgO was 3%,the cut-off wavelength of ultraviolet-shielding property of the composite was 300 nm,which was 11%higher than neat PET.

关 键 词：聚对苯二甲酸乙二醇酯 纳米氧化镁 力学性能 结晶性能 紫外屏蔽 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]