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浸渍用有机聚锆前驱体的制备与表征

DOI: 10.3724/SP.J.1105.2014.13155, PP. 56-62

Keywords: 前驱体,浸渍裂解,碳化锆

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Abstract:

为获得成本低,毒性小的浸渍用ZrC陶瓷前驱体,以苯酚、甲醛、八水氧氯化锆、乙酰丙酮和双氧水为原料,制备了有机聚锆前驱体(PZC).该前驱体在空气中可稳定存在,易溶于乙醇,可被稀释到任意黏度.采用XPS、XRD、NMR、FTIR、流变仪和TG-DSC对前驱体的组成与结构进行了表征,并对其动态黏度以及裂解过程进行了分析.结果表明,采用乙醇为溶剂,乙酰丙酮为配位剂,可成功的将锆引入聚合物分子链中,并以Zr-O和Zr-O-C的形式存在;反应过程中,乙酰丙酮与八水氧氯化锆所形成的络合物为主反应物,通过配位反应与羟甲基酚生成直线双链型结构的PZC;黏度分析表明,该前驱体在较宽的温度范围(40~100℃)具有较低的黏度(50~800mPa·s),适合做浸渍剂;该前驱体在1400℃下惰性气氛中裂解,残碳率为48%,可以作为优良的浸渍用陶瓷前驱体使用.

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