dispersibility and thermalstability too.

The above products were characterized by FT-IR, XRD, Raman, SEM, TEM and TG. The results show that two nanohybirds have been fabricated successfully and the thermal stability of the nanohybirds was improved in comparison with GO observably. Moreover, the degree of the thermal stability of nanohybirds was improved  was different at different temperatures. The higher the reaction temperatures were, the more the degree of thermal stability of nanohybirds were improved in a certain range of temperature. Beyond the range, it shows the opposite pattern. On the whole, the law curve presents normal distribution and exists maximum optimal value. Also, the dispersibility of GO-MA and MA-mGO nanohybirds was improved in comparison with pure GO which can be dealt with solution treating, and simplifying the multifarious steps during the preparation of composites. The achivements in this thesis will   provide a certain amount of data to support and practical experiences  for  some application fields, such as flameresistant material.

Keywords: graphene oxide melamine nanohybird thermal stability

目 次

第 1 章 绪论 1

1.1 课题的研究背景与意义 1

1.2 氧化石墨烯 1

1.2.1 GO 的合成 2

1.2.2 GO 的结构 2

1.3 聚乙烯醇（PVA） 4

1.4 聚合物纳米复合材料的研究 4

1.4.1 聚合物纳米复合材料的合成 4

1.4.2 聚合物纳米复合材料的性能 6

第 2 章 酰氯化 GO 偶联 MA 的石墨烯基功能化纳米材料 11

2.1 引言 11

2.2 实验药品与仪器 11

2.2.1 实验原料与试剂 11

2.2.2 实验仪器 12

2.2.3 分析方法 12

2.3 氧化石墨的制备 12

2.3.1 预氧化 12

2.3.2 深度氧化 12

2.3.3 氧化石墨烯悬浮液的制备 13

2.4 有酰氯化杂化材料的制备 13

2.5 材料表征 13

2.5.1 FT-IR 分析 13

2.5.2 Raman 分析