为了在水性体系下获得高分散性的炭黑,本实验通过臭氧微米气泡技术对炭黑表面进行氧化,并通过沉降实验检测了炭黑在水性体系下的分散稳定性,利用傅立叶红外光谱仪(FT-IR),X光电子能谱仪(XPS),元素分析仪,热分析仪(DTA-TG)、扫描电子显微镜(SEM)分别对臭氧氧化改性后炭黑的表面基团结构,表面含氧量进行了表征.结果表明,经过臭氧氧化改性后的炭黑,大量的羧基、羟基等亲水性含氧基团被引入,即使高速(3500 r/min)离心沉降60 min后,炭黑在水溶液中的稳定性系数仍然可达到93.6%.
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