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摘要
采用γ-氨丙基三乙氧基硅烷(KH-550)改性处理氧化石墨烯(GO),添加改性后的GO,与聚酰胺-6(PA6)/氢氧化镁[Mg(OH)2],成功制备了改性GO/PA6/Mg(OH)2复合材料。通过红外光谱、热重分析、X-射线衍射、机械拉伸、锥形量热仪等技术手段对复合材料进行了分析和表征。结果表明,添加改性GO之后PA6/Mg(OH)2复合材料的热分解速率大大降低,拉伸强度由32MPa提高至43MPa,在改性GO添加量为1%(wt,质量分数),Mg(OH)2添加量为40%(wt,质量分数)条件下,制得的改性GO/Mg(OH)2/PA6的极限氧指数达到28.5,具有较好的阻燃性能。
Abstract
GO/PA6/Mg(OH)2 composite material was successfully prepared by adding 3-Aminopropyltriethoxysilane (KH-550) modified GO into polyamide 6 (PA6)/magnesium hydroxide (Mg(OH)2).The composite was analyzed and characterized by the infrared spectrum,thermal gravity analysis,X-ray diffraction,mechanical tensile stretching and cone calorimeter.Results shown that the thermal decomposition rate of PA6/Mg(OH)2 declined dramatically with adding the modified GO.The tensile stress was increased from 32MPa to 43MPa,under the condition of 1wt% GO and 40wt% Mg(OH)2,the limiting oxygen index of GO/Mg(OH)2/PA6 was 28.5.The flame retardant performance of the composite increased simultaneously.
关键词
改性氧化石墨烯
/
氢氧化镁
/
PA6
/
机械性能
/
阻燃
Key words
modified graphene oxide
/
magnesium hydroxide
/
PA6
/
mechanical property
/
flame retardant
改性氧化石墨烯/氢氧化镁/聚酰胺-6复合材料的制备和性能研究[J].
化工新型材料, 2019, 47(12): 46-49 DOI:
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基金资助
中国博士后科学基金(2017M610163)
