碳纳米杂化材料的制备及其对环氧树脂性能的影响  

Strengthening and toughening property of epoxy resin composite with MWCNT/f-GN hybrid material

作　　者：吴俊青[1] 俞科静[1] 钱坤[1] 

机构地区：[1]江南大学国家生态纺织重点实验室,无锡214122

出　　处：《化工新型材料》2016年第8期41-43,共3页New Chemical Materials

基　　金：江苏省产学研联合创新资金-前瞻性联合研究项目(BY2014023-14;BY2014023-15;BY2015019-33);中央高校基本科研业务费专项资金资助(JUSRP41501;JUSRP51505);"十二五"国家科技支撑计划(2013BAG19B01);江苏省研究生培养创新工程(KYLX15-1182);江苏高校优势学科建设工程资助项目(PAPD);连云港市产业前瞻与共性关键技术科技项目(CG1520)

摘　　要：通过超声处理和离心酸化石墨烯与多壁碳纳米管制备出碳纳米管/石墨烯杂化材料。通过紫外光谱表征杂化材料结构的变化。通过将不同填料(杂化材料、石墨烯、碳纳米管)加入环氧树脂体系制备复合材料样条,对样条进行拉伸测试,并通过扫描电镜观察样条断面的微观形态。结果表明:当杂化材料的添加量为0.3%(质量分数)时,复合材料的力学性能最好。根据结果可初步推断出杂化材料增强增韧环氧树脂的可能机理:(1)杂化材料为纳米粒子,纳米粒子在界面上与环氧基团形成远大于范德华力的作用力,构成非常理想的界面;(2)杂化材料中石墨烯与碳纳米管通过π-π作用嵌插在一起形成三维立体结构,这种"胡须"状结构可分散和缓冲样条受到的外力作用,外力作用过程中产生微裂纹吸收能量,实现对环氧树脂强度和韧性的改性。The hybrid materials were prepared by ultrasonic and centrifugation used functional graphene and hydrox- ylation of multi-walled carbon nanotubes. The ultraviolet spectrum （UV） was used to analyze the structure changes of hy- brid materials. Then added different materials into epoxy resin, the mechanical properties and surface fractures of composite samples were studied..The results showed that 0.3% hybrid materials had best effect on epoxy resin. According to the re- suits,the strengthening and toughening mechanism of epoxy composites with MWCNT/f-GN hybrid materials were ana- lyzed. The strong interface bonding force between epoxy resin and hybrid materials was much bigger than Van der Waals＇ force. Besides, functional graphene and hydroxylation of multi-walled carbon nanotubes formed the three-dimensional struc- ture by π-π impact, and the structure had a plane with lots of beards. When the samples was under tensile load, the structure of hybrid materials can spread the stress. The beards of hybrid materials were stuck with each other to buffer force to form microcrack. These microcracks can avoid the brittleness of composite samples successfully.

关 键 词：环氧树脂 石墨烯 碳纳米管 杂化材料 增强增韧 

分 类 号：TB34[一般工业技术—材料科学与工程] TQ323.5[化学工程—合成树脂塑料工业]