臭氧微泡技术提高炭黑在水溶液中的分散稳定性

Improving the Dispersion Stability of Carbon Black in Aqueous Solution Using Ozone Microbubbles Technology

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(3500r/min)离心沉降60min后,炭黑在水溶液中的稳定性系数仍然可达到93.6%。

In order to obtain high dispersal carbon black in aqueous water, In this experiment, carbon black surfaces were oxidized by ozone microbubbles technology, after which dispersion stability of oxidized carbon black in aqueous solution was charactered by centrifugal settlement method. The surface groups structure, surfaces oxygen contents of oxidized carbon black were investigated by means of FT-IR, XPS, Element analysis instrument, DTA-TG, SEM, respectively. The results showed that some highly marked hydrophilic character functional groups on carbon black surfaces, including O-C = O, O-H, were introduced greatly by ozone microbubbles technology, and after the samples were centrifuged at 3500 r/ min in a centrifuge for 60 min, the stability factor（D% ） of oxidized carbon black in aqueous solution still reached 93.6%.