含碳耐火材料酚醛树脂结合剂的研究现状与展望

发布时间：2018-04-29 03:10

本文选题：含碳耐火材料 + 酚醛树脂　；参考：《材料导报》2017年11期

【摘要】：含碳耐火材料不仅热导率较高,具有较好的抗热冲击性能,而且与熔渣不润湿,具有良好的抗侵蚀性能,因此大量生产并在冶金工业中广泛应用。酚醛树脂因具有与石墨润湿、残碳率高、环境友好、结合强度较高的特点而广泛用作含碳耐火材料结合剂。然而,酚醛树脂热解碳为脆性的非晶结构,不仅在应力作用下易脆性断裂,而且在高温下容易氧化。很多研究致力于酚醛树脂的化学改性。为提高酚醛热解碳的抗氧化性能或力学性能,提高酚醛树脂残碳率,通常添加过渡金属化合物、纳米碳、半导体陶瓷作为催化剂以提高热解碳的有序度,或者在其酚醛树脂热解碳基体中生成具有较高石墨化度的碳纳米管、碳纳米纤维以及Si C纳米线。
[Abstract]:The carbon-bearing refractories not only have high thermal conductivity and good thermal shock resistance, but also have good corrosion resistance without wetting with slag, so they are produced in large quantities and widely used in metallurgical industry. Phenolic resin is widely used as a binder for carbon-containing refractories because of its wetting with graphite, high carbon residue rate, environmental friendliness and high bonding strength. However, the pyrolytic carbon of phenolic resin is a brittle amorphous structure, which is not only brittle fracture under stress, but also easy to be oxidized at high temperature. Many studies have focused on the chemical modification of phenolic resins. In order to improve the oxidation resistance or mechanical properties of phenolic pyrolytic carbon and increase the residual carbon rate of phenolic resin, transition metal compounds, nano-carbon and semiconductor ceramics are usually added as catalysts to improve the order of pyrolytic carbon. Alternatively, carbon nanotubes, carbon nanofibers and sic nanowires with high graphitization degree were formed in the pyrolytic carbon matrix of phenolic resin.
【作者单位】：西安建筑科技大学材料与矿资学院;西安建筑科技大学材料科学与工程博士后流动站;中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室;
【基金】：国家自然科学基金(51502236;51572212) 中国博士后基金(2016M602940XB) 先进耐火材料国家重点实验室开放课题
【分类号】：TQ175.4;TQ323.1

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