摘要
为了在水溶液中获取高分散性的炭黑,本实验通过双氧水对炭黑表面进行氧化改性,并利用沉降度检验炭黑在水溶液中的分散稳定性。分别利用傅立叶红外光谱仪、热分析仪、X射线光电子能谱、元素分析仪以及X射线粉末衍射仪表征双氧水改性炭黑的表面基团结构、氧含量、晶型结构。结果表明,炭黑表面经过双氧水氧化改性后,大量的羧基、羟基等酸性含氧基团被引入,在离心沉降(3500r/s)60min后,炭黑在水溶液中的稳定性系数仍然可达到50%以上,而原始炭黑却只有5%左右。
In order to obtain high dispersal carbon black in aqueous solution, in this experiment, carbon black surfaces were modified by hydrogen peroxide oxidation, after which dispersion stability of oxidized carbon black in aqueous solution was charactered by centrifugal settlement method. The surfaces group structure, surfaces oxygen content, crystal structure of the original and oxidized carbon black were investigated by means of FT-IR, XPS, Element analysis instrument, TGA, XRD, 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 hydrogen peroxide oxidation, and after the samples were centrifuged at 3500 r/s in a centrifuge for 60 rain, the stability factor（ D% ） of oxidized carbon black in aqueous solution still reached over 50%, but the stability factor （ D% ） of original carbon black in aqueous solution was only about 5%.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2008年第6期1124-1128,共5页
Bulletin of the Chinese Ceramic Society
基金
浙江省科技计划项目(2005C11043)
浙江省教育厅科研项目(20051306)
关键词
炭黑
双氧水
氧化
carbon black
hydrogen peroxide
oxidation
