【作者】 陈林；

【导师】 强敏；

【作者基本信息】 武汉科技大学 ， 化学工艺， 2005， 硕士

【摘要】 本文简要介绍了酚醛树脂的应用现状,特别是用作滑板结合剂的酚醛树脂的合成、固化及反应原理,并讨论了影响酚醛树脂结构与性质的因素。针对普通酚醛树脂(PF)在作为耐火材料结合剂使用中存在的问题,结合耐烧蚀树脂基体应具备的结构特点,研究了以有机蒙脱土改性酚醛树脂的可行性。 本文采用插层聚合方法制备了酚醛树脂/有机蒙脱土(MMT)纳米复合材料,通过正交试验与结果分析,并根据实际情况确定了最佳的工艺参数。合成的热固性PF/MMT比一般热固性PF的残碳率高出九个百分点。经XRD分析表明该复合材料中,有机改性蒙脱土以纳米级分散在酚醛树脂中,所得材料为纳米复合材料。 热重分析测试表明,其构成的纳米复合材料比纯酚醛树脂具有更好的耐热性能。制砖实验的结果表明:PF/MMT结合砖的中温强度较普通PF有较大幅度(40%)的提高,同时显气孔率及体积密度也分别有所下降和提高,从一定程度缓解了中温强度低对砖造成的不利影响,为进一步解决该问题奠定了基础。更多还原

【Abstract】 In this paper, the mechanism of curing reaction and methods of composing about phenolic resin used for slide plate and its present application were introduced simply. The factors that affect the structure and performance of the phenolic resin were also discussed. In order to settle the problems in common phenolic resin binder for refractory, the paper researched the probability of phenolic resin modified by organophilic mont morillonite.Phenolic resin/mont morillonite nanocomposites could be prepared by intercalation polymerization. By the cross-experiment and its result analysis, we determined the best process parameters. The rate of residual carbon of this thermosetting PF/MMT was more 9 percent point than common thermosetting phenolic resin’s, so it’s a better binder for refractory than common phenolic resin. The organophnilic nanolayer of MMT was dispersed in phenolic resin; the matermial was nanocomposite that inspected by XRD.The results of thermogravimetry show that the heat-resistance of phenolic resin/mont morillonite nanocomposites was better than phenolic resin. And the results of making-bricks experiments illustrated that, in Mid-temperature zone, the strength of bricks bonds by PF/MMT was higher than common PF bonded brick’s at larger extent. The disadvantage caused by the Mid-temperature zone strength decline was remedied at some extent. Therefore, this paper formed the basis for further settling the problem.更多还原