静电纺丝法制备SiCN陶瓷纳米纤维材料及其表征

发布时间：2018-04-06 22:39

本文选题：静电纺丝　切入点：SiCN纳米纤维　出处：《东北师范大学》2010年硕士论文

【摘要】： 静电纺丝技术是制备纳米纤维材料的主要方法之一,最近越来越多的研究人员将这种方法应用在陶瓷材料的制备方面,陶瓷材料具有质量轻,热稳定性好,高温耐热,导电率低等优秀特质,在石油化工和冶金陶瓷等领域都都有非常重要的应用,因此研究陶瓷材料具有非常重要的意义。尽管现在有多种合成纳米纤维的方法,但静电纺丝技术是最为通用的方式。聚合物、复合物、陶瓷材料、金属纳米纤维都已通过静电纺丝法或再经过高温煅烧制备成功。因此静电纺丝技术被认为是合成聚合物纳米纤维的一种非常有效的技术。近年来,多种聚合物已成功被静电纺丝成极为细小的纤维,其中大部分是溶解在溶液中,也包括少部分为熔融状态。本论文采用静电纺丝技术,以不同质量比的聚硅氮烷聚和乙烯吡咯烷酮(PVP)为原料制备了一系列纳米纤维材料,并采用高温煅烧(1100 oC)的方法获得了一系列SiCN陶瓷材料(样品1-4)。我们对该陶瓷材料样品进行了IR,XRD和XPS表征,研究表明样品中含有的主要元素是Si,C,N,O元素,而且样品是非晶态的。由于反应原料质量比的不同,样品1中主要含有Si-C,C-N, Si-N, C=C和O-H键,样品2中主要含有Si-C,C-N, Si-N和O-H键,样品3中含有C-N, Si-N和O-H键,样品4中主要含有C-N, Si-N和O-H键。而且,我们还利用扫描电镜技术对SiCN陶瓷纳米纤维材料的形貌进行了进一步研究。
[Abstract]:Electrospinning is one of the main methods for preparing nanofiber materials. Recently, more and more researchers have applied this method to the preparation of ceramic materials. Ceramic materials have light weight, good thermal stability, high temperature and heat resistance.The excellent properties of low conductivity are very important in petrochemical and metallurgical ceramics and so on, so it is of great significance to study ceramic materials.Although there are many ways to synthesize nanofibers, electrostatic spinning is the most common way.Polymers, composites, ceramic materials and metal nanofibers have been prepared by electrospinning or calcination at high temperature.Therefore, electrostatic spinning technology is considered to be a very effective technology for the synthesis of polymer nanofibers.In recent years, many polymers have been successfully electrospun into extremely fine fibers, most of which are dissolved in solution and a few are melt.In this paper, a series of nano-fiber materials were prepared by electrospinning with polysiloxane and vinylpyrrolidone as raw materials, and a series of SiCN ceramic materials (sample 1-4) were obtained by high temperature calcination.The samples were characterized by IR and XPS. The results show that the main elements in the samples are SICP N2O and the samples are amorphous.Because of the different mass ratio of raw materials, sample 1 mainly contains Si-Cn C-N, Si-N, Con C and O-H bonds, sample 2 mainly contains Si-Cn C-N, Si-N and O-H bonds, sample 3 mainly contains C-N, Si-N and O-H bonds, and sample 4 mainly contains C-N, Si-N and O-H bonds.Furthermore, the morphology of SiCN ceramic nanofibers was further studied by scanning electron microscopy (SEM).
【学位授予单位】：东北师范大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TB383.1

【参考文献】