碳纤维复合材料的结构对辐射特性的影响
发布时间：2018-08-28 08:05
【摘要】：在复合材料通用性极强的大背景下,碳纤维复合材料由于其优越的力学性能备受关注,而随着对碳纤维复合材料研究的深入与广泛应用,其在电磁学与热力学特性的改进与优化也迫在眉睫。本文就通过了解与制作碳纤维复合材料,考虑影响碳纤维复合材料光学特性的影响因素,并在本实验室允许的条件下,考虑设计研究此类材料的一般性方法。本文通过了解光学常数间存在的关系,由于微观领域上原子和分子间的能量与能级跃迁的变化,使得所有材料的光学常数间都存在固定的光学常数关系——kramers-kronig关系,菲涅尔定律等。又由于不同材料的微观特性,不同种类的材料也存在着一定的色散关系。从而依此建立起了研究碳纤维材料的光学常数间的模型,并且通过对kramers-kronig关系的研究也延伸出了直接通过该关系结合反射光谱研究材料光学常数的方法。而由于使用通过色散模型和kramers-kronig关系式建立起的光学常数模型解不唯一,且直接通过kramers-kronig关系求解也存在测量光谱与所需的计算光谱不统一的矛盾。从而引入数学方法,来将本文所建立的两种光学常数模型转化为可以求解的数学模型进行求解,并通过引入其他文献数据对所建立的完整的两种数学模型进行验证。并在此基础上,使用两种数学模型对制作的样片的光学常数进行计算。在此基础上,作者自行制作了结构、厚度、胶体含量不同的样片。并对对碳纤维材料的光谱数据,对不同因素对光学常数的影响进行了分析。并得出结论,碳纤维布料较薄时,可视其为多孔半透明介质;而不同角度编织结构对材料的光学常数有一定的影响;环氧树脂作为基体材料,其吸收特性会使碳纤维样片相比碳纤维布料的光学常数有所下降。
[Abstract]:Under the background of high versatility, carbon fiber composites (CFRP) have attracted much attention because of their superior mechanical properties. However, with the development and application of CFRP, carbon fiber composites (CFRP) have been widely used. It is urgent to improve and optimize the electromagnetic and thermodynamic properties. In this paper, the influence factors of the optical properties of carbon fiber composites are considered through understanding and making carbon fiber composites, and a general method of designing and studying this kind of materials is considered under the conditions permitted by our laboratory. In this paper, by understanding the relationship between optical constants, because of the changes of energy and energy level transitions between atoms and molecules in the microscopic field, there is a fixed optical constant relation between optical constants of all materials, that is, Kramers-kronig relation. Fresnel's law and so on. Because of the microcosmic characteristics of different materials, there is a certain dispersion relationship among different kinds of materials. Thus, a model for studying the optical constants of carbon fiber materials is established, and the method of studying the optical constants of carbon fiber materials directly through the study of the kramers-kronig relationship is also extended. Because the optical constant model established by dispersion model and kramers-kronig relation is not unique, and the measurement spectrum is inconsistent with the calculated spectrum directly through the kramers-kronig relation. Then the mathematical method is introduced to transform the two optical constant models established in this paper into mathematical models that can be solved, and the complete two mathematical models are verified by introducing other literature data. On this basis, two mathematical models are used to calculate the optical constants of the samples. On this basis, the author made samples with different structure, thickness and colloid content. The influence of different factors on optical constants was analyzed. It is concluded that when carbon fiber cloth is thin, it can be seen as porous translucent medium, and different angle braiding structure has certain influence on the optical constant of the material, epoxy resin is used as matrix material, The absorption properties of the carbon fiber sample will decrease the optical constant of the carbon fiber fabric compared with that of the carbon fiber cloth.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB332
本文编号：2208789
[Abstract]:Under the background of high versatility, carbon fiber composites (CFRP) have attracted much attention because of their superior mechanical properties. However, with the development and application of CFRP, carbon fiber composites (CFRP) have been widely used. It is urgent to improve and optimize the electromagnetic and thermodynamic properties. In this paper, the influence factors of the optical properties of carbon fiber composites are considered through understanding and making carbon fiber composites, and a general method of designing and studying this kind of materials is considered under the conditions permitted by our laboratory. In this paper, by understanding the relationship between optical constants, because of the changes of energy and energy level transitions between atoms and molecules in the microscopic field, there is a fixed optical constant relation between optical constants of all materials, that is, Kramers-kronig relation. Fresnel's law and so on. Because of the microcosmic characteristics of different materials, there is a certain dispersion relationship among different kinds of materials. Thus, a model for studying the optical constants of carbon fiber materials is established, and the method of studying the optical constants of carbon fiber materials directly through the study of the kramers-kronig relationship is also extended. Because the optical constant model established by dispersion model and kramers-kronig relation is not unique, and the measurement spectrum is inconsistent with the calculated spectrum directly through the kramers-kronig relation. Then the mathematical method is introduced to transform the two optical constant models established in this paper into mathematical models that can be solved, and the complete two mathematical models are verified by introducing other literature data. On this basis, two mathematical models are used to calculate the optical constants of the samples. On this basis, the author made samples with different structure, thickness and colloid content. The influence of different factors on optical constants was analyzed. It is concluded that when carbon fiber cloth is thin, it can be seen as porous translucent medium, and different angle braiding structure has certain influence on the optical constant of the material, epoxy resin is used as matrix material, The absorption properties of the carbon fiber sample will decrease the optical constant of the carbon fiber fabric compared with that of the carbon fiber cloth.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB332
【引证文献】
相关会议论文 前2条
1 武文明;成来飞;王广;;高温热处理对C/SiC复合材料热辐射性能的影响[A];第十五届全国复合材料学术会议论文集（下册）[C];2008年
2 殷小玮;成来飞;张立同;徐永东;;C/SiC—Cr-Si复合材料的结构与性能[A];复合材料的现状与发展——第十一届全国复合材料学术会议论文集[C];2000年
，本文编号：2208789
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