聚氨酯/沸石杂化材料的制备及性能

INVESTIGATION ON THE SYNTHESIS AND PROPERTIES OF PU/ZEOLITE HYBRID MATERIALS

首次提出聚氨酯/沸石型有机-无机杂化的新模式,并选用表面富含活泼羟基且含有微孔直径大于0.7nm的沸石分子筛,制备出聚氨酯/沸石分子筛新型杂化材料。结果表明,其性能远优于纯聚氨酯的性能,与聚氨酯/有机蒙脱土纳米复合材料的力学性能和耐热性能相近,但耐溶剂性能和回弹性能优于前者。XRD分析表明分子筛在杂化材料中保持原状,FT-IR证实TDI能够与沸石分子筛表面的硅羟基进行接枝反应。

The new model of PU/zeolite hybrid materials was first proposed in this paper. The novel PU/zeolite hybrid materials were synthesised with zeolite which has lots of active -OH in the surface. The microporous diameter of zeolites is greater than 0.7 nm. The properties of the hybrid materials have been studied. The results show that the properties of PU/zeolite hybrid materials are much better than that of pure PU, the mechanical properties and the heat resistance of which are as good as that of PU/MMT nonacomposites,and both the solvent resistance and rebound of which are superior to the latter. The XRD shows that zeolite without changing in the hybrid materials. The FTIR proves that the grafting reaction can happen between TDI and Si-OH in the surface of the zeolites.