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摘要本文用聚乙烯吡咯烷酮（PVP）改性氧化石墨烯（GO），再将PVP改性后的GO（PGO）与丁苯橡胶（SBR）胶乳共凝制得PGO/SBR复合材料。研究了PVP用量对PGO/SBR复合材料的物理机械性能、热稳定性、导热性能和耐溶剂性等性能的影响。结果表明：随着PVP用量的增加，PGO/SBR复合材料的物理机械性能、热稳定性、导热性能和耐溶剂性均有所提高。当PVP/GO（质量比，GO为5份）达到3时，PGO/SBR复合材料的拉伸强度和撕裂强度分别比未改性的GO/SBR复合材料提高了43%和22%，交联密度提高了46.3%，最大热分解温度（Tmax）提高了5.71℃，导热系数提高了11.7%，平衡溶剂吸附量下降了37.1%。27172
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关键词 氧化石墨烯 丁苯橡胶 力学性能 导热性能
毕业论文设计说明书外文摘要
Title The preparation and properties of modified graphene oxide/ styrene-butadiene rubber composites
Abstract
In this study, graphene oxide (GO) was modified by polyvinyl pyrrolidone (PVP), and then the PVP modified GO/styrene-butadiene rubber (PGO/SBR) composites were fabricated by mixing PGO suspension with SBR latex. The effect of PVP loading on the mechanical properties, thermal stability, thermal conductivity and solvent resistance of PGO/SBR composites were investigated. It is shown that the mechanical properties, thermal stability, thermal conductivity and solvent resistance of PGO/SBR composites were improved with the increase of PVP loading. When the mass ratio PVP/GO (the content of GO was 5 phr) reached 3, the tensile strength and tear strength of PGO/SBR composites were enhanced by 43% and 22% respectively compared to unmodified GO/SBR composites. Meanwhile, the crosslinking density was increased by 46.3%, the maximum temperature of heat decomposition (Tmax) was improved by 5.71ºC, the thermal conductivity had an 11.7% increment, the equilibrium solvent uptake was decreased by 37.1%.
Keywords Graphene oxide Styrene-butadiene rubber Mechanical properties Thermal properties
目 次
1 绪论 1
1.1 引言 1
1.2 氧化石墨烯的制备及改性 1
1.2.1 氧化石墨烯的制备 1
1.2.2 氧化石墨烯的改性 1
1.3 聚乙烯吡咯烷酮（PVP）改性碳纳米材料 2
1.4 氧化石墨烯/橡胶复合材料的制备 3
1.4.1 机械混合 3
1.4.2 原位混合 3
1.4.3 溶液混合 3
1.4.4 乳液混合 4
1.5 氧化石墨烯/橡胶复合材料的性能 4
1.5.1 机械性能 4
1.5.2 导热性能 4
1.5.3 耐热性能 4
1.5.4 阻隔性能 4
1.6 本课题的选题意义与主要研究内容 5
2 实验部分 5
2.1 实验药品 5
2.2 实验仪器 6
2.3 试样制备 7
2.3.1 PVP改性GO（PGO）的制备 7
2.3.2 PGO/SBR复合材料的制备 7
2.4 表征及性能测试 8
2.4.1 PGO的结构表征 8
2.4.2 PGO/SBR复合材料的性能测试 8
3 结果与讨论 9
3.1 PGO的结构表征 9
3.1.1 UV-vis表征 9
3.1.2 FTIR表征 10
3.1.3 XRD表征 11
3.1.4 13C-NMR表征 12
3.1.5 TG和DSC表征 12