摘要
以三聚氰胺(MA)和甲醛为原料,添加氧化石墨烯(GO),通过原位聚合法制备了环境友好的石墨烯/三聚氰胺甲醛树脂(GE/MF)纳米导电复合材料.采用傅里叶变换红外光谱(FTIR)、拉曼光谱(Raman)、X-射线衍射(XRD)及场发射扫描电子显微镜(FESEM)分析了复合材料的结构和形貌.通过高阻仪和热重分析仪研究了石墨烯对三聚氰胺甲醛树脂导电性和热稳定性的影响,并检测了其甲醛含量.结果表明,超声剥离之后的GO与三聚氰胺甲醛树脂自组装形成了"三明治"夹层结构的复合材料,在GO被还原成GE的同时,大大降低了产品中游离甲醛含量,提高了复合材料的导电性和热稳定性.
The environment friendly and conductive graphene/melamine formaldehyde resin （GE/MF） nanocomposites were prepared via in situ polymerization by graphene oxide （GO）, melamine and formaldehyde. Their structures and morphologies were characterized by Fourier transmission infrared spectroscopy （FTIR）, Raman spectroscopy （Raman）, X-ray diffraction （XRD） and field emission scanning electron microscopy （FESEM）. The conductivity and thermal stability of GE/MF nanocomposites were measured through high resistance meter and thermo-gravimetric analysis （TGA）. Moreover, formaldehyde content of these composites were measured. The results showed that GE/MF nanocomposites with sandwich structure were fabricated through layer-by-layer self-assembly of GO with melamine formaldehyde resin. GO were reduced by hydrazine, meanwhile, free formaldehyde content of nanocomposites were decreased obviously. The introduction of graphene significantly improved the conductivity and thermal stability of GE/MF nanocomposites.
出处
《中国科学：化学》
CAS
CSCD
北大核心
2015年第2期186-193,共8页
SCIENTIA SINICA Chimica
基金
国家自然科学基金(51202020
51472035)的资助
关键词
石墨烯
三聚氰胺甲醛树脂
层状自组装
纳米复合材料
graphene, melamine formaldehyde resin, layer-by-layer self-assembly, nanocomposites
