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Crystallization modifier material and application thereof in desalination of stone cultural relics
The invention discloses a crystallization modifier material and application thereof in desalination of stone cultural relics, and belongs to the field of material chemistry. The crystallization modifier material includes an alkali metal sulfate modifier material or an alkali metal chloride modifier material. Wherein the chlorine salt is modified by meso-ferrous tartrate and meso-ferric tartrate, and the sulfate is modified by a compound of low-molecular-weight polyepoxysuccinic acid, low-molecular-weight polyaspartic acid, diethylenetriaminepenta (methylene phosphonic acid) and polyepoxysuccinic acid. The tartrate is non-toxic, and the polyepoxysuccinic acid and the polyaspartic acid are green, environment-friendly and biodegradable; the compound reduces the use amount of phosphonate with poor degradability. The modifier accelerates the evaporation and migration rate of the salt solution and also changes the crystallization habit of the precipitated salt, so that the precipitated salt is changed from a block shell shape with a compact structure into a loose branched shape and a nanosheet shape, and the salt crystallization pressure in micropores and the damage to pore walls are reduced to a great extent. Compared with a traditional deionized water paper pulp applying method, the method has the advantages that the efficiency is obviously improved, and the weathering quantity is reduced by 1.5-4 times compared with that of the traditional applying method.
本发明公开了一种结晶改性剂材料及在石质文物脱盐中的应用，属于材料化学领域。结晶改性剂材料，包括碱金属硫酸盐改性剂材料或碱金属氯盐改性剂材料。其中：氯盐为内消旋酒石酸亚铁和内消旋酒石酸铁改性，硫酸盐为低分子量聚环氧琥珀酸、低分子量聚天冬氨酸、二乙烯三胺五甲叉膦酸和聚环氧琥珀酸复配物改性。本发明中酒石酸盐无毒、聚环氧琥珀酸和聚天冬氨酸绿色环保，可生物降解；复配物降低了降解性差膦酸盐用量。改性剂加快了盐溶液的蒸发与迁移速率，同时也改变了析出盐的结晶习性，使其从结构紧密的块壳状变为疏松的分枝状与纳米片状，很大程度地降低了微孔中盐结晶压力以及造成孔隙壁的破坏。本发明方法相比传统去离子水纸浆贴敷方法效率明显提高，且风化量比传统贴敷法风化量降低1.5‑4倍。
Crystallization modifier material and application thereof in desalination of stone cultural relics
The invention discloses a crystallization modifier material and application thereof in desalination of stone cultural relics, and belongs to the field of material chemistry. The crystallization modifier material includes an alkali metal sulfate modifier material or an alkali metal chloride modifier material. Wherein the chlorine salt is modified by meso-ferrous tartrate and meso-ferric tartrate, and the sulfate is modified by a compound of low-molecular-weight polyepoxysuccinic acid, low-molecular-weight polyaspartic acid, diethylenetriaminepenta (methylene phosphonic acid) and polyepoxysuccinic acid. The tartrate is non-toxic, and the polyepoxysuccinic acid and the polyaspartic acid are green, environment-friendly and biodegradable; the compound reduces the use amount of phosphonate with poor degradability. The modifier accelerates the evaporation and migration rate of the salt solution and also changes the crystallization habit of the precipitated salt, so that the precipitated salt is changed from a block shell shape with a compact structure into a loose branched shape and a nanosheet shape, and the salt crystallization pressure in micropores and the damage to pore walls are reduced to a great extent. Compared with a traditional deionized water paper pulp applying method, the method has the advantages that the efficiency is obviously improved, and the weathering quantity is reduced by 1.5-4 times compared with that of the traditional applying method.
本发明公开了一种结晶改性剂材料及在石质文物脱盐中的应用，属于材料化学领域。结晶改性剂材料，包括碱金属硫酸盐改性剂材料或碱金属氯盐改性剂材料。其中：氯盐为内消旋酒石酸亚铁和内消旋酒石酸铁改性，硫酸盐为低分子量聚环氧琥珀酸、低分子量聚天冬氨酸、二乙烯三胺五甲叉膦酸和聚环氧琥珀酸复配物改性。本发明中酒石酸盐无毒、聚环氧琥珀酸和聚天冬氨酸绿色环保，可生物降解；复配物降低了降解性差膦酸盐用量。改性剂加快了盐溶液的蒸发与迁移速率，同时也改变了析出盐的结晶习性，使其从结构紧密的块壳状变为疏松的分枝状与纳米片状，很大程度地降低了微孔中盐结晶压力以及造成孔隙壁的破坏。本发明方法相比传统去离子水纸浆贴敷方法效率明显提高，且风化量比传统贴敷法风化量降低1.5‑4倍。
Crystallization modifier material and application thereof in desalination of stone cultural relics
一种结晶改性剂材料及在石质文物脱盐中的应用
ZHANG XIANMING (author) / CHEN DONGMEI (author)
2023-09-29
Patent
Electronic Resource
Chinese
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