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用X射线光电子能谱(XPS)研究了聚苯硫醚(PPS)在高温下的化学反应和PPS与不锈钢、铸铁、A3碳钢的结合机理。结果表明,PPS在300℃以上发生了氧化交联和氧化反应,反应中有C-O-C、Ph-SO-Ph和Ph-SO2-Ph基团生成,涂层界面的Ph-S-Ph中的S有23%生成了Ph-SO-Ph和Ph-SO2-Ph。同时初步解释了PPS涂层与金属界面的结合是由于PPS中S原子的孤对电子和金属基体的Fe3+发生配位,生成具有一定数量的多核大分子配合物所致。
The chemical reaction of polyphenylene sulfide (PPS) at high temperature and the bonding mechanism of PPS with stainless steel, cast iron and A3 carbon steel were studied by X-ray photoelectron spectroscopy (XPS). The results showed that the oxidation-crosslinking and oxidation of PPS occurred at above 300 ℃. The reaction of C-O-C, Ph-SO-Ph and Ph-SO2-Ph groups occurred at the coating interface. 23% of S generated Ph-SO-Ph and Ph-SO2-Ph. At the same time, a preliminary explanation of the combination of the PPS coating with the metal interface is due to the coordination between the lone pair electrons of the S atom in the PPS and the Fe3 + metal matrix, resulting in a complex with a certain number of polynuclear macromolecules.