Surface Modification of Graphene with Layered Molybdenum Disulfide and Their Synergistic Reinforcement on Reducing Fire Hazards of Epoxy Resins

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• 作者：Dong Wang ; Keqing Zhou ; Wei Yang ; Weiyi Xing ; Yuan Hu ; Xinglong Gong
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：December 18, 2013
• 年：2013
• 卷：52
• 期：50
• 页码：17882-17890
• 全文大小：623K
• 年卷期：v.52,no.50(December 18, 2013)
• ISSN：1520-5045

文摘

In this work, molybdenum disulfide (MoS₂)鈥搈odified graphene (MoS₂/GNS) hybrids were prepared by the hydrothermal method and characterized by X-ray diffraction (XRD), Laser Raman spectroscopy (LRS) and transmission electron microscope (TEM). The characterization results show layered molybdenum disulfide was deposited on the surface of graphene nanosheets (GNSs) and grahene oxide was reduced simultaneously. Thermogravimetric analysis results of MoS₂, GNS and MoS₂/GNS hybrids showed that incorporation of MoS₂ increased the thermal oxidation resistance of the graphene evidently. Compared to pure epoxy resins (EP), the addition of MoS₂/GNS hybrids into EP enhanced the onset thermal degradation temperature (T_onset) with an 53 掳C increment under air atmosphere and an 18 掳C increment under nitrogen atmosphere. The addition of MoS₂/GNS hybrids endows excellent flame retardant properties to EP, confirmed by the dramatically reduced peak heat release rate value and total heat release value. Moreover, the addition of MoS₂/GNS hybrids dramatically decreased the smoke products.