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PPS是一种广泛应用的耐热高聚物.线型PPS在空气中,在熔点以下(如270℃)进行不同条件的热处理,可获得几种型号的树脂.在作为涂料使用时,需要热氧化处理(320℃～400℃,十几分钟～几小时)以便形成不同实用目的的涂层.文献报导,PPS氧化交联的结构是是三取代二苯醚.专利报导,在空气中,在320℃下加热线型PPS,获得没有被氧化的二苯硫杂茚等产物.上述结论不能满意地解释线型PPS在空气中热处理得到的红外光谱和伴随的物理化学变化,本文对此过程作进一步的探讨.
PPS is a widely used heat-resistant polymer.Linear PPS is available in air at various temperatures below its melting point (eg, 270 ° C) to provide several types of resins.When used as a coating, it requires heat Oxidation treatment (320 ℃ ~ 400 ℃, ten minutes to several hours) in order to form a coating for different practical purposes.It has been reported in the literature, PPS oxidation crosslinked structure is tri-substituted diphenyl ether.Patent reports, in the air, at The PPS was heated at 320 ℃ to obtain the products of the unheated diphenylthiane indentation, etc. The above conclusions can not satisfactorily explain the infrared spectra and accompanying physico-chemical changes of the linear PPS in air, Further discussion.