膨胀石墨/碳纤维复合材料研制+文献综述

本文以天然鳞片石墨（NFG）为原料，HClO4/H3PO4/CrO3作为氧化插层体系，
采用化学氧化法制备可膨胀石墨（GIC）。分析了 VEG的影响因素以及 GIC 的制备
机理，确定了最大膨胀体积 VEG时的最佳制备工艺。结果表明在最佳工艺条件下
制备可膨胀石墨膨胀体积可达250 mL/g（600℃）。
应用SEM、XRD、FT-IR等现代分析仪器研究了 GIC外貌、结构、内部组成等，
结果表明插层物质（ClO4）已经插入到石墨层间，形成GIC。
选用无水乙醇作为混合剂制备出膨胀石墨/碳纤文复合干扰材料。研究了此复
合干扰材料 8mm 波衰减性能，分析了衰减性能影响因素。结果表明，膨胀石墨/
碳纤文复合干扰材料具有较优的 8mm 波衰减性能，且复合干扰材料 8mm 波衰减分
贝数受 GIC 粒度（80 目衰减性能较优）、天然鳞片石墨与碳纤文束质量比等因素
影响。 5552
关键词可膨胀石墨膨胀石墨蠕虫膨胀体积 GIC 表征膨胀石墨/碳纤文复
合毫米波衰减
Title Study on the properties of expanded graphite/carbon
          fiber compound interference material
Abstract
The graphite intercalation compound（GIC） was prepared by chemical
oxidation method using natural flake graphite（NFG）,HClO4/H3PO4/CrO3 as the
oxidant and intercalation agent. The optimum technology parameters of
expansive volume(VEG) were determined. The result showed that VEG was 300mL/g
at 600℃. The composition and structure of GIC were characterized and
analyzed by SEM、XRD and FT-IR. Result showed that the intercalates like
had already been inserted into the graphite layers.The
ingredients of mixture are LGIC and carbon fiber, alcohol is used as
mixture. The study results showed that interference properties is
strengthened with addition of carbon fiber mass. The effects of mass of
carbon fiber and size of LGIC to MMW interference properties of expanded
graphite/carbon fiber compound interference materials.Carbon fiber
disperses more uniform and MMW interference properties is better, if the
expanded graphite/carbon fiber compound is prepared with nature flake
graphite of 80 mesh.
Key words: Graphite intercalation compound   Expansive graphite worm
Expansive volume   GIC characters   GIC/expansive graphite composite
materials MMW attenuation
目次

1   绪论 . 1
1.1   研究背景及意义 1
1.2   国内外研究现状 1
1.2.1   国内外研究相关现状 . 1
1.2.2 研究新方向：低温低能耗可膨胀石墨材料 2
1.3   本设计主要研究内容 . 2
2   膨胀石墨/碳纤文复合材料制备工艺   3
2.1   可膨胀石墨制备理论基础 . 3
2.1.1 天然鳞片石墨 3
2.1.2 可膨胀石墨 4
2.1.3 膨胀石墨蠕虫 8
2.2   低温低能耗可膨胀石墨的制备 . 11
2.2.1   实验试剂与仪器 . 11
2.2.2 可膨胀石墨制备过程 . 11
2.2.3 膨胀体积测试方法 . 12
2.3 影响膨胀石墨体积的因素探讨 . 13
2.3.1 反应阶段最佳工艺参数的选择 13
2.3.2 分离阶段最佳工艺的选择 . 16
2.4 可膨胀石墨的结构表征 . 17
2.4.1 SEM分析   17
2.4.2 XRD分析   18
2.4.3 FT-IR分析 . 19 膨胀石墨/碳纤维复合材料研制+文献综述:http://www.751com.cn/huaxue/lunwen_2620.html