With the rapid development of Graphene based hybrid materials, various of them were fabricated to improve the fire safety of EP. However, the effect of GO content in the hybrid material on flame retardancy of EP composites is rarely reported. In order to find the optimal ratio of GO/Mg(OH)₂, platelet-like Mg(OH)₂ functioned graphene (GPM) were synthesized with diverse content GO substance and then presented into EP resin for improving its fire retardancy. Various characterizations confirmed its composition, structure and morphology. The incorporation of GPM contains about 1% GO increased the tensile strength by 31.6% compared to that of untreated Mg(OH)₂. The GPM contains about 5% GO exhibited the finest fire safety in various EP composites. The fire-retardant assessments illustrated that the limiting oxygen index (LOI) of EP composite with 3 wt.% GPM progressed to 27.8% compared with virgin EP (24.4%). In parallel, compared to virgin EP, the peak heat release rate, peak smoke production rate, total smoke production and peak CO production rate of EP/5GPM were diminished by 50.9%, 44.0 %, 25.5% and 53.1%, separately. The mechanism investigation revealed that the prominent flame retardancy and smoke suppression were attributed to the physical barrier of GO, the endothermic decomposition of Mg(OH)₂, the barrier effect of MgO and synergistic effect between GO and Mg(OH)₂ toward the optimized carbonization. In perspective, hierarchical platelet structure with synergistic effect offered an effective approach for the fire-safe polymer.

随着石墨烯基杂化材料的快速发展，人们制造了各种材料以提高 EP 的防火安全性。然而，杂化材料中GO含量对EP复合材料阻燃性的影响鲜有报道。为了找到GO/Mg(OH) ₂的最佳比例，用不同含量的GO物质合成片状Mg(OH) ₂功能化石墨烯(GPM)，然后将其引入EP树脂中以提高其阻燃性。各种表征证实了其组成、结构和形态。与未处理的 Mg(OH) ₂相比，GPM 的掺入含有约 1% 的 GO，拉伸强度提高了 31.6%. GPM 含有约 5% 的 GO，在各种 EP 复合材料中表现出最好的防火安全性。阻燃评估表明，与原始 EP (24.4%) 相比，含 3 wt.% GPM 的 EP 复合材料的极限氧指数 (LOI) 提高到 27.8%。同时，与原始EP相比，EP/5GPM的峰值放热率、峰值产烟率、总产烟量和峰值CO产率分别降低了50.9%、44.0%、25.5%和53.1%。机理研究表明，GO的物理阻隔、Mg(OH) ₂的吸热分解、MgO的阻隔作用以及GO与Mg(OH) ₂之间的协同作用，具有显着的阻燃和抑烟效果。朝着优化碳化的方向发展。从角度来看，具有协同效应的分层片状结构为防火聚合物提供了一种有效的方法。