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以一种有机钙源—烷氧基钙作为钙源,讨论了其在大气环境下的矿化过程,基于其特殊的矿化过程对比研究了甲氧基钙、氢氧化钙和氯化钙在石质文物模拟物砂芯上形成碳酸钙和草酸钙矿化膜的过程,并通过红外光谱(IR)、X射线衍射(XRD)、扫描电镜(SEM)、热分析(TG/DTA)对材料进行了表征。结果表明:甲氧基钙在合适湿度及CO2作用下会缓慢转化为碳酸钙,其甲醇溶液通过吸收大气中CO2能够在石质文物模拟物表面形成一层与本体兼容性好的碳酸钙涂层,与稀草酸溶液协同作用能够在基体表面生成均匀致密的水合草酸钙保护层。
A kind of organic calcium source, calcium alkoxide, was used as calcium source to discuss its mineralization under atmospheric environment. Based on its special mineralization process, the effects of calcium methoxide, calcium hydroxide and calcium chloride on The process of forming calcium carbonate and calcium oxalate mineralized film on the sand core of the stone cultural relics was studied by means of IR, XRD, SEM and TG / DTA, Characterized. The results showed that the calcium methoxide was slowly converted to calcium carbonate under proper humidity and CO2, and the methanol solution could form a calcium carbonate coating on the surface of the stone cultural relics with good compatibility by absorbing CO2 in the atmosphere , And synergy with dilute oxalate solution can generate a uniform and dense layer of hydrated calcium oxalate on the surface of the substrate.