纳米金属氧化物填充PE复合材料隔热性能的研究  

Research on the Insulating Property of PE Filled by Nano Metal Oxides

作　　者：赵文隆[1] 张清松[1] 吴智华[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《塑料工业》2011年第12期104-108,共5页China Plastics Industry

摘　　要：研究了纳米金属氧化物填料TiO2、ZrO2、ZnO和Fe2O3填充PE复合材料的隔热性能与光反射性能的关系。结果表明,对于白色的TiO2、ZrO2、ZnO填料而言,光反射性能越好的纳米金属氧化物,填充的PE复合材料隔热性能越好;对于有色的Fe2O3填料,其复合材料的隔热性能与光反射性能似乎关系不大,隔热性较差。通过对纳米金属氧化物填料隔热机理的分析,认为这是由于纳米金属氧化物填料的隔热方式为反射隔热屏蔽热辐射,反射率高的材料,在0.4～2.5μm的范围内反射太阳辐射能的功能强,表面温度低,反射率越高,在2.5～15μm的辐射波段范围内,会辐射出更多所吸收的热量;而有色的Fe2O3/PE复合材料会强烈地吸收红外线和紫外线,使复合材料本身温度上升很大,热传递成为升温的主要途径,因此隔热性能较差。This paper introduced the relationship between insulating property and light reflective property of nano metal oxides TiO2, ZrO2, ZnO and Fe2O3 filled PE composites. In this research, for the white fillers like TiO2, ZrO2, ZnO, the better the reflective property of the nano metal oxide filler was, the better the insulating property of the composite was. For the colored filler like Fe2O3, the insulating property of its composite was bad and seemed to have no relationship with the reflective property. It was because the way that the nano metal oxides insulating heat was reflecting to shield the thermal radiation. The material with the high reflectivity can strongly reflect the solar radiation in the wavelength between 0. 4 - 2. 5 μm and keep the low temperature of its surface. The higher the reflectivity was, the more absorbed heat can be radiated in the wavelength between 2.5 -15 μm. The colored Fe2O3/PE composite can strongly absorb the infrared and ul- traviolet rays to make the temperature of the composite itself increased a lot which lead thermal conductivity to become the main way of warming. That was the reason for the bad insulating property of Fe2O3/PE composite.

关 键 词：复合材料 聚乙烯 纳米金属氧化物 隔热性能 反射性能 

分 类 号：TB332[一般工业技术—材料科学与工程]