以植物纤维（棉花）为模板制备氧化锆隔热纤维及其性能的研究

发布时间：2018-03-05 02:32

本文选题：遗态　切入点：棉花　出处：《南京理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：由于氧化锆陶瓷纤维的高温稳定性和隔热保温性较好,从而被广泛应用在高温工业窑炉行业中。自然界中存在的生物,在长期进化和演变的过程中形成很多结构独特,功能特殊的材料。近几年的研究学者们探索出利用天然生物为模板来制备结构独特,组织可控的新型材料,并希望通过这些独特的结构来赋予材料优异使用性能的方法。本文将采用这一遗态法的思想,利用棉花和粘胶纤维为模板材料,通过浸渍的方法获得了具有模板纤维一样结构形态的实心与中空氧化锆隔热陶瓷纤维。本论文的主要研究内容如下:(1)利用遗态法,以棉花和粘胶纤维为模板制备氧化锆隔热陶瓷纤维,并研究了不同工艺条件(纤维模板、浸渍盐溶液的锆源、浓度、浸渍时间、烧结温度等)对所得纤维材料的微观形貌的影响。(2)对制得的氧化锆隔热陶瓷纤维进行导热系数的测试,并分析不同工艺条件对纤维隔热性能的影响及原因。(3)在制备具有中空结构氧化锆隔热陶瓷纤维时,分析了中空结构形成原因,并探索四氯化锡与聚乙烯吡咯烷酮的质量比值(S/P)以及烧结温度对其微观形貌的影响。(4)对该氧化锆隔热陶瓷纤维进行热分析、成分元素以及孔径分布等表征,来研究利用遗态法以棉花和粘胶纤维为模板制备氧化锆纤维的反应过程,纤维中化学元素分析以及孔径分布的情况。本文将遗态的学术思想引到隔热材料的制备中,使隔热材料的构造借鉴自然,为制备高效的隔热材料提供了新思路。
[Abstract]:Zirconia ceramic fibers are widely used in high temperature industrial kiln industry because of their good high temperature stability and thermal insulation. Materials with special functions. In recent years, researchers have explored the use of natural organisms as templates to prepare new materials with unique structures and controllable structures. It is hoped that these unique structures will be used to endow the materials with excellent performance. In this paper, the idea of this method will be adopted, and cotton and viscose fibers will be used as template materials. Solid and hollow zirconia insulating ceramic fibers with the same structure as template fibers were obtained by impregnation. Zirconia insulating ceramic fibers were prepared by using cotton and viscose fibers as templates. Different processing conditions (fiber template, zirconium source of impregnated salt solution, concentration, impregnation time) were studied. The influence of sintering temperature on the microstructure of the obtained fiber. (2) the thermal conductivity of the prepared zirconia insulating ceramic fiber was measured. The influence of different process conditions on the thermal insulation properties of the fibers and the reasons for the formation of hollow structure were analyzed in the preparation of zirconia insulating ceramic fibers with hollow structure. The effects of the mass ratio of tin tetrachloride to polyvinylpyrrolidone (S / P) and sintering temperature on the microstructure of the ceramic fiber were investigated. The reaction process, chemical element analysis and pore size distribution of zirconia fiber prepared from cotton and viscose fiber were studied. The structure of thermal insulation materials can be used for reference, and a new idea is provided for the preparation of high efficiency heat insulation materials.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ174.758.21

【相似文献】