硫酸铝废渣力化学表面改性的研究  

Study on mechanochemical techniques for surface modification of aluminum sulfate dregs

作　　者：阮文红[1] 章明秋[1] 容敏智[1] 王明辉[1] 

机构地区：[1]中山大学材料科学研究所聚合物复合材料及功能材料教育部重点实验室,广东广州510275

出　　处：《材料研究与应用》2008年第4期241-244,共4页Materials Research and Application

基　　金：国家自然科学基金项目(50773095);广东省教育部产学研结合项目(2007B090400092);佛山市科技发展专项资金项目(2007060B);中山大学后备重点课题项目

摘　　要：针对大量废弃的工业废渣严重污染环境,难以回收利用的问题,从排放量较大的硫酸铝废渣入手,采用扫描电子显微镜/X-射线能谱联用(SEM-EDXS)技术对硫酸铝废渣的组成进行分析.在此基础上,采用球磨力化学技术对硫酸铝废渣进行表面接枝改性处理,并对改性废渣进行了结构表征.实验结果表明,硫酸铝废渣的组成为SiO266.36%,Al2O36.48%,TiO22.25%,Fe2O30.66%,CaO1.17%.通过红外光谱和热失重分析证明,球磨过程在粉碎细化废渣的同时,可由力化学作用引发原位接枝聚合反应,将改性聚合物化学键接在废渣表面,使废渣具备与聚合物共混、在聚合物基体中均匀分散的基本条件.Industrial dregs, which are difficult to recycle,become a source of environmental pollution. As a major rejected substance, the composition and structure of aluminum sulfate dregs were characterized by SEM-EDXS. Mechanochemical techniques of ball milling were applied to treat aluminum sulfate dregs for surface grafting modification. The results show that aluminum sulfate dregs is consist of 66.36% silica,6. 48% alumina,2.25% titanic oxide,0.66% ferric oxide and 1.17%calcic oxide. A series of grafting-modified dregs were prepared and the influence of monomer ratio,rotation speed and time of ball milling on grafting efficiency was investigated. It is demonstrated that mechanochemical techniques of ball-milling can smash up dregs as well as initiate in-situ grafting polymerization. Thus the usableness and uniform dispersion of dregs in polymer matrix can be ensured.

关 键 词：硫酸铝废渣 球磨 力化学作用 接枝 表面改性 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.1[化学工程—合成树脂塑料工业]