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采用熔融共混法制备了PAS改性AT/PBT纳米复合材料。结果表明:PBT/AT复合材料中的AT在低含量时可以达到纳米级的良好分散,而高含量时出现AT的团聚体;与PBT复合后,AT的典型衍射峰未变化,且AT对基体PBT的晶型也几乎没有影响。AT的加入对PBT的热分解过程影响不大。微观力学结果表明:作为纳米级填料的AT在含量较低时可以对复合材料的黏度和蠕变性能产生明显影响,而随着AT含量的进一步增加,由于AT本身的团聚,其影响作用减弱。AT作为纳米级填料的纳米效应是其使PBT微观力学性能改变的机理。
PAS modified AT / PBT nanocomposites were prepared by melt blending method. The results show that the AT of PBT / AT composites can be well dispersed in the nano-scale at low content, while the agglomerates of AT appear at high content. The typical diffraction peaks of AT after PBT / AT composites do not change, The crystalline form of PBT also has almost no effect. The addition of AT has little effect on the thermal decomposition of PBT. The results of micro-mechanics show that AT, as a nano-filler, can significantly affect the viscosity and creep properties of the composites at low levels. With the further increase of the AT content, AT’s own reunion reduces its influence. The nano-effect of AT as nano-scale filler is the mechanism by which the mechanical properties of PBT are changed.