磷酸铝结合剂改性绿松石的结构特征

疏松绿松石经磷酸铝结合剂浸胶充填处理后，宝石学参数、力学和工艺性质均得到明显改善，与天然绿松石相仿.为查明这类改性绿松石的结构和探讨磷酸铝无机结合剂对绿松石的改善机理，采用环境扫描显微镜(ESEM)、差热分析(TG-DSC)、红外吸收光谱(IR)和X射线粉晶衍射分析方法(XRD)，对此类浸胶充填处理后的绿松石结构、物相及热性质等特征进行了研究.结果显示充填入的磷酸铝结合剂呈凝胶状分布在绿松石微孔隙间，处理后绿松石的分子结构和矿物组构与处理前一致，但产生了一定程度的非晶质化，与磷酸铝结合剂的填充作用有关，即磷酸铝结合剂在固化过程中生成氢，结合形成无机网络高分子结构；处理后绿松石的热反应温度较处理前普遍有所降低，主要是由于添加入的磷酸铝结合剂具有较低的吸热反应温度所致. 

Structural Characteristics of Turquoise Filled with Aluminum Phosphate Adhesive

The quality grade,gemology characteristics,cutting and grinding processing of the loosen turquoises filled with aluminum phosphate adhesive are improved distinctly,and consequently they are similar with the natural turquoises.They can not be identified easily by gemmology testing methods.In order to verify the structure of this kind of modified turquoises and discuss the mechanism of the turquoises improved by the aluminium phosphate inorganic adhesive,the environmental scanning electron microscope(ESEM),th...