甘氨酸钠对SiC粉体的表面改性及其浆料流变性研究  

Study on Surface Modification of SiC Powder by Sodium Glycine and its Rheological Properties

作　　者：高晓莹 王瑞雨 杨明[1] 张虎林 高原[1] GAO Xiaoying;WANG Ruiyu;YANG Ming;ZHANG Hulin;GAO Yuan(Chemistry and Chemical Engineering College,Yantai University,Yantai 264005,China;Dongying Kenli District Quality and Technical Supervision Bureau,Dongying 257500,China)

机构地区：[1]烟台大学化学化工学院,烟台264005 [2]东营市垦利区质量技术监督局,东营257500

出　　处：《中国陶瓷》2019年第6期25-29,共5页China Ceramics

基　　金：国家自然科学基金项目(51573155,51172195)

摘　　要：以强电解质甘氨酸钠(SG)为改性剂,考察其在SiC粉体表面的吸附状况,制备高分散SiC粉体,同时研究其浆料流变性。结果表明,采用固相球磨和恒温处理工艺,0.15%甘氨酸钠改性后的SiC粉体Zeta电位绝对值明显高于改性前,pH值为10.0时,从38.9 mV增加到62.2 mV。TOC(总有机碳)对粉体洗涤液中有机物含量的测试表明,微量甘氨酸钠的平衡吸附可有效降低SiC浆料粘度,提高其固含量和稳定性。The strong electrolyte sodium glycine was used as a modifier to study the adsorption on the surface of SiC powder. The high-dispersion SiC powder was prepared and the rheology of slurry was studied. The results show that the absolute value of zeta potential of SiC powder modified by 0.15% sodium glycine is higher than that before modification, increasing from 38.9 mV to 62.2 mV. The TOC (total organic carbon) test on the organic matter content in the powder washing solution shows that the balanced adsorption of sodium glycine can effectively reduce the viscosity of SiC slurry and improve its solid content and stability.

关 键 词：SIC粉体 甘氨酸钠 表面改性 流变性 

分 类 号：TQ174.613[化学工程—陶瓷工业]