The ageing depeion of nitrate-poetherthased Polyurethans were studied by means of swellingtheory of polymere and chemical reaction kinetics.
运用聚合物的溶
和化学反应动力学，研究了硝酸酯基聚醚聚氨酯的老化降解过
。
zhǐ jī
ester group
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趾状的, 酯, 酯化, 酯化的, 酯化作用, 酯基, 酯价, 酯交换, 酯胶, 酯解,