不同氧化程度石墨烯与羧基丁腈橡胶复合材料的制备及表征

摘要本文通过调节KMnO4的用量，采用Hummers法及超声剥离得到一系列氧化程度不同的氧化石墨烯（GO），通过与羧基丁腈橡胶（xNBR）胶乳共凝得到GO/xNBR复合材料。研究了GO氧化程度对GO/xNBR复合材料物理机械性能、硫化性能、热稳定性及耐溶剂性等性能的影响。结果表明：KMnO4的用量越多，GO的氧化程度越大；GO的填充能够显著提高xNBR硫化胶的物理机械性能、硫化性能、热稳定性及耐溶剂性。填充GOD15（KMnO4的用量为15 g）对xNBR的补强效果最好。当GOD15用量为4份时，相比于空白xNBR，GO/xNBR硫化胶的拉伸强度和300%定伸模量（M300）分别提高了114.60%和269.32%，5%失重率温度（T5）和最大失重温度（Tmax）分别增大了15.0 ℃和21.8 ℃。42548

关键词羧基丁腈橡胶氧化石墨烯氧化程度性能

毕业论文设计说明书外文摘要

Title The preparation and properties of carboxylated nitrile rubber nano-composites with graphene oxide of different oxidation degrees

Abstract

Graphene oxide（GO）of different oxidation degrees was synthesized using different amount of KMnO4 through a Hummers’ method, and then the GO suspersions were mixed with xNBR latex to fabricate GO/xNBR nano-cmposites. The mechanical properties, curing behavior，thermal stability and solvent resistance were characterized to reveal the influence of different oxidation degrees of GO on the performance of GO/xNBR nano-composites. The results were as following: the increasement in KMnO4 dosage resulted in higher oxidation degree. The mechanical properties, curing behavior，thermal stability and solvent resistance of GO/xNBR nano-composites were significant improved. When adding 4phr GOD15(the amount of KMnO4 was 15 g), the properties of GO/xNBR nano-composites were largely enhanced compared with neat xNBR: The tensile strength and modulus at 300% elongation increased by 114.60% and 269.32%, respectively. Meanwhile, the temperature for 5% degradation（T5） and maximal rate of heat decomposition process（Tmax） improved by 15.0 °C and 21.8 °C, respectively.

Keywords Cboxylated nitrile rubber Graphene oxide Oxidation degrees Properties

1 绪论 1

1.1 引言 1

1.2 GO的制备 2

1.3 GO的性质 2

1.3.1 GO氧化程度的控制方法 2

1.3.2 GO的结构控制 2

1.4 GO/橡胶复合材料的制备 3

1.5 氧化石墨烯/橡胶复合材料的性能 3

1.5.1 机械性能 3

1.5.2 动态力学性能 4

1.5.3 阻隔性能 4

1.5.4 导热性能 4

1.5.5 热稳定性 4

1.6 本课题的选题意义与主要研究内容 5

2 实验部分 6

2.1 实验药品与仪器 6

2.2 实验配方 7

2.3 样品制备 7

2.3.1 不同氧化程度GO的制备 7

2.3.2 GO/xNBR复合材料的制备 8

2.4 结构表征和性能测试不同氧化程度石墨烯与羧基丁腈橡胶复合材料的制备及表征:http://www.youerw.com/huaxue/lunwen_43044.html