对古建筑修复中使用的偏高岭土基地聚合物进行了XRD晶相分析和SEM形貌分析,结果表明,在短龄期内,水化反应与聚合反应同时进行,反应进行到一定程度后,水化反应逐渐停止,聚合反应成为主导.NMR核磁共振与FTIR红外光谱分析发现,地聚合反应发生时,偏高岭土中以多种配位形式存在的铝相均向四配位转化,且对称的Si-O-Si伸缩振动吸收峰偏移,变为非对称的伸缩振动,同时聚合反应后出现铝氧四面体内的振动吸收峰,表明铝氧四面体取代部分硅氧四面体,形成新的网络聚合结构. The X-ray crystallography and SEM analysis of the metakaolin base polymer used in the restoration of ancient buildings showed that the hydration reaction and the polymerization reaction were carried out in a short period of time. After the reaction proceeded to a certain extent, the water The reaction ceased gradually, and the polymerization reaction became dominant.NMR and FTIR analysis showed that the aluminum phase in metakaolin turned into tetracoordinate coordination when the polymerization occurred, and the symmetry of Si -O-Si stretching vibration absorption peak shift into asymmetric stretching vibration, and polymerization reaction occurs after the aluminum tetrahedron vibration absorption peak, indicating that aluminum oxy tetrahedron to replace part of the silicon tetrahedron to form a new network polymerization structure.