聚氨酯/纳米复合涂料的红外特性及其力学性能的研究  

A STUDY ON THE INFRARED CHARACTERISTIC AND MECHANICAL PROPERTIES OF POLYURETHANE/NANO MATERIALS

作　　者：李齐方[1] 于运花[1] 杨庆泉[1] 马剑峰[1] 金日光[1] 

机构地区：[1]北京化工大学材料与工程学院,北京100029

出　　处：《高分子材料科学与工程》2002年第3期110-113,共4页Polymer Materials Science & Engineering

摘　　要：系统研究了聚氨酯涂料的红外特性及其力学性能。选用三种填料 (纳米级氢氧化镁、氧化铬、ITO)对聚氨酯进行共混改性 ,并讨论了不同含量的填料与性能的关系。含有纳米级层状氢氧化镁的聚氨酯涂料具有最低的红外发射率和最高的红外吸收率。该体系的拉伸强度、断裂伸长率和回弹性相对于纯的聚氨酯体系下降幅度最小 ,并且涂层耐擦洗次数最高 ;加入填料后 ,体系的硬度增加 ,但用量超过 2 0 %后硬度增加不明显 ;此外 ,体系的吸水性随填料的增加而显著增加 ,但用量超过 10 % 。The infrared characteristic and the mechanical properties of polyurethane coating were systematically investigated. Three kinds of fillers(nano magnesium hydroxide, chromium oxide, ITO) were blended with polyurethane, and the relation between the content of filler and properties was studied. The polyurethane coating which contained nano magnesium hydroxide filler exhibited the lowest infrared reflectivity and the highest infrared absorptivity among three blend systems. Tensile strength, elongation of break and elasticity of the polyurethane blends were slightly reduced relative to pure polyurethane. After infilling the filler, the hardness of PU blend was increased and had a good abrasion resistance. When infilling more than 20% filler the hardness showed no further increasing. Whilst, water absorption increased significantly with increasing filler content. However, water absorption of blends began to decrease once filler exceeding 10%, when adding 30% filler, water absorption significantly decreased.

关 键 词：聚氨酯/纳米复合涂料 红外特性 力学性能 研究 纳米材料 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ633[化学工程—精细化工]