改性石墨烯对酚醛树脂结构和热解性能的影响  

Effect of modified graphene sheets on the structure and pyrolysis properties of phenolic resin

作　　者：李永锋 刘燕珍[2] 龚文照 焦蓬 陈成猛[2] 杨永岗[2] 王茂章[2] 王刚 

机构地区：[1]阳泉煤业集团有限责任公司化工研究院,山西太原030006 [2]中国科学院山西煤炭化学研究所中国科学院炭材料重点实验室,山西太原030001 [3]山西汾西重工有限责任公司空分研究所,山西太原030027

出　　处：《炭素技术》2014年第4期5-9,19,共6页Carbon Techniques

基　　金：国家"973"项目支持(编号:2011CB605600)

摘　　要：在酚醛树脂中分别加入不同质量分数的氧化石墨粉、化学还原氧化石墨烯乙醇悬浮液及热法还原石墨烯粉,采用溶液共混法和热压成型法制备氧化石墨烯/酚醛树脂、还原氧化石墨烯/酚醛树脂、石墨烯/酚醛树脂复合材料,然后在氩气气氛中经1 700,2 000,3 000℃高温热处理。结果表明,这3种填料大部分以剥离单片/少层形态均匀分散于树脂基体中,其表面粗糙,可提高界面结合强度和耐热性;在低于2 000℃下,3种填料的加入能有效减小树脂基体的层间距,且高含量氧化石墨粉效果最明显。同时结合微晶生长及催化理论,提出氧化石墨烯等对树脂层间距减小的作用机理。Gaphene oxide/phenolic resin, reduced graphene oxide/phenolic resin, and graphene/phenolic resin composites were prepared by solution blending and hot-press molding technologies using different mass fractions of graphite oxide, chemical reduced graphene oxide-ethanol suspension and thermal reduced graphene oxide, respectively, followed by high heat treatment at 1 700, 2 000, 3 000 ℃ under Ar atmosphere. Result shows that the three kinds of nanofillers with rough surface and single/fewer layered morphology are dispersed homogeneously in resin matrix, as well as improve the interface bonding strength and heat resistance. Below 2 000 ℃, the three fillers can effectively reduce the resin layer spacing. The high content of graphite oxide powder is the optimum one. Meanwhile, in combination with the microerystalline growth theory and catalytic graphitization principle, the mechanism of reducing resin layer is proposed.

关 键 词：氧化石墨烯 还原氧化石墨烯 高温热处理 层间距 

分 类 号：O613.71[理学—无机化学] TQ323.1[理学—化学]