锆改性酚醛树脂的合成与表征  

Synthesis and Characterization of Phenolic Resin Modified With Zirconium

作　　者：王于刚[1] 史铁钧[1] 李忠[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009

出　　处：《化学推进剂与高分子材料》2009年第4期37-39,共3页Chemical Propellants & Polymeric Materials

摘　　要：以甲醛、苯酚、氧氯化锆为原料合成了高残碳锆酚醛树脂。研究了甲醛与苯酚物质的量比以及氧氯化锆的用量对树脂残碳率的影响,确定了合成工艺条件。用IR和TGA对产品的化学结构与热性能进行了分析,结果表明:锆元素以Zr-O-C键和Zr-O-Zr键的形式存在于锆酚醛树脂分子链中,与普通酚醛树脂相比锆酚醛树脂分子链中醚键含量降低、热稳定性提高,最大热分解温度和残碳率分别为560℃和62.5%,可作为优良耐高温和耐烧蚀的树脂基体材料。Phenolic resin modified with zirconium and with high char yield was synthesized with formaldehyde, phenol and zirconyl chloride as raw materials. Effects of molar ratio of formaldehyde, phenol and amount of zirconyi chloride on char yield of resin were studied, and the optimum synthesis technology was determined. The chemical structure and thermal properties of the resin were characterized by IR and TGA. The results show that zirconium existes in molecular chain of zirconyl-phenolic resin in the form of Zr- O-C bond and Zr-O-Zr bond, which has lower content of ether bond and higher thermal stability than popular phenolic resin. The maximum thermal decomposition temperature is 560℃, and the char yield is 62.5%. It is suitable for use as the typical matrix to high temperature-resistant and ablation-resistant of resin.

关 键 词：酚醛树脂 氧氯化锆 三元共聚 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]