本文關(guān)鍵詞： 液相剝離法 石墨烯 熱導(dǎo)率　出處：《無機(jī)材料學(xué)報》2017年09期 　論文類型：期刊論文

【摘要】：采用高速剪切機(jī)液相剝離法,在膽酸鈉的水溶液中將鱗片石墨剝離,離心得到石墨烯分散液。AFM、TEM、Raman表征結(jié)果發(fā)現(xiàn),剝離出的石墨烯厚度小于4層,尺寸大約在2~3μm,高質(zhì)量缺陷少(I_D/I_G≈0.15)。將石墨烯分散液冷凍干燥后與銀粉共同添加到硅橡膠中,制備出導(dǎo)熱硅橡膠。利用穩(wěn)態(tài)熱流法測試導(dǎo)熱硅橡膠的導(dǎo)熱系數(shù)發(fā)現(xiàn),當(dāng)添加3vol%石墨烯時,復(fù)合材料的導(dǎo)熱系數(shù)由未添加石墨烯時的4.900 W/(m·K)提高到12.367 W/(m·K)。綜上所述,通過液相剝離法成功制備出缺陷較少的少層石墨烯,能夠與銀粉協(xié)同提高導(dǎo)熱硅橡膠的導(dǎo)熱系數(shù)。
[Abstract]:The flake graphite was peeled off in aqueous solution of sodium cholate by high speed shearing machine. The results of Raman characterization of graphene dispersions, AFM, Tem, and the results showed that the thickness of graphene was less than 4 layers. The size is about 2 渭 m, and the defect of high quality is less than D / IG 鈮，

本文編號：1495996