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含能材料  2005 

表面处理方式对纳米Al/PS微胶囊形态的影响

Keywords: 材料科学,纳米铝粉,微胶囊,表面处理,形态

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Abstract:

纳米铝粉进行表面处理时所用表面活性剂的种类及用量直接影响Al/PS微胶囊的形态。纳米铝粉在超声波场作用下经Span-80或PEG处理后,可在纳米铝粉表面形成单体和引发剂的富集区,在适当条件下引发以纳米铝粉为核心的原位分散聚合反应。当Al粒子对PEG的吸附与初级粒子对PVP的吸附达到动态平衡时,制备出的Al/PS微胶囊表面光滑,分散性好,大部分Al粒子被PS包裹。

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