Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Magnesium oxychloride cement doped with chitosan phosphate and nano silicon dioxide and preparation method of magnesium oxychloride cement
The invention belongs to the technical field of magnesium oxychloride cement modification, and particularly relates to magnesium oxychloride cement doped with chitosan phosphate and nano silicon dioxide and a preparation method of the magnesium oxychloride cement. The preparation method comprises the following steps: mixing absolute ethyl alcohol, phosphoric acid and triethyl phosphate in proportion, adding phosphorus pentoxide and chitosan, fully reacting, washing with absolute ethyl alcohol to be neutral, and drying to obtain the magnesium oxychloride cement doped with chitosan phosphate and nano silicon dioxide. The preparation method comprises the following steps: preparing chitosan, drying to obtain chitosan phosphate, dissolving the chitosan phosphate in a glacial acetic acid solution, adding the nano silicon dioxide subjected to surface activation treatment into the solution, fully reacting, washing with deionized water, and drying to obtain the chitosan phosphate coated nano silicon dioxide. The preparation method comprises the following steps: mixing magnesium chloride and water according to a ratio, adding chitosan phosphate at nano silicon dioxide, fully stirring and carrying out ultrasonic treatment to obtain a magnesium chloride mixed solution, uniformly stirring the light-burned magnesia and the magnesium chloride mixed solution to prepare magnesium oxychloride cement paste, injecting the magnesium oxychloride cement paste into a mold, and placing the mold in air for constant-temperature and constant-humidity maintenance to obtain the magnesium oxychloride cement paste. The magnesium oxychloride cement with relatively high compressive strength and softening coefficient is prepared.
本发明属于氯氧化镁水泥改性技术领域，具体涉及一种掺有壳聚糖磷酸酯@纳米二氧化硅的氯氧化镁水泥及其制备方法：将无水乙醇、磷酸、磷酸三乙酯按比例混合，加入五氧化二磷和壳聚糖，充分反应后，用无水乙醇洗至中性，烘干得到壳聚糖磷酸酯，将壳聚糖磷酸酯溶解于冰醋酸溶液，然后将表面活化处理后的纳米二氧化硅投入其中，充分反应后用去离子水洗涤，烘干得到壳聚糖磷酸酯@纳米二氧化硅。氯化镁、水按比例混合后加入壳聚糖磷酸酯@纳米二氧化硅，充分搅拌并超声后得到氯化镁混合溶液，然后将轻烧菱苦土、氯化镁混合溶液搅拌均匀制成氯氧化镁水泥浆体，注入模具，置于空气中恒温恒湿养护，制备了抗压强度、软化系数较高的氯氧化镁水泥。
Magnesium oxychloride cement doped with chitosan phosphate and nano silicon dioxide and preparation method of magnesium oxychloride cement
The invention belongs to the technical field of magnesium oxychloride cement modification, and particularly relates to magnesium oxychloride cement doped with chitosan phosphate and nano silicon dioxide and a preparation method of the magnesium oxychloride cement. The preparation method comprises the following steps: mixing absolute ethyl alcohol, phosphoric acid and triethyl phosphate in proportion, adding phosphorus pentoxide and chitosan, fully reacting, washing with absolute ethyl alcohol to be neutral, and drying to obtain the magnesium oxychloride cement doped with chitosan phosphate and nano silicon dioxide. The preparation method comprises the following steps: preparing chitosan, drying to obtain chitosan phosphate, dissolving the chitosan phosphate in a glacial acetic acid solution, adding the nano silicon dioxide subjected to surface activation treatment into the solution, fully reacting, washing with deionized water, and drying to obtain the chitosan phosphate coated nano silicon dioxide. The preparation method comprises the following steps: mixing magnesium chloride and water according to a ratio, adding chitosan phosphate at nano silicon dioxide, fully stirring and carrying out ultrasonic treatment to obtain a magnesium chloride mixed solution, uniformly stirring the light-burned magnesia and the magnesium chloride mixed solution to prepare magnesium oxychloride cement paste, injecting the magnesium oxychloride cement paste into a mold, and placing the mold in air for constant-temperature and constant-humidity maintenance to obtain the magnesium oxychloride cement paste. The magnesium oxychloride cement with relatively high compressive strength and softening coefficient is prepared.
本发明属于氯氧化镁水泥改性技术领域，具体涉及一种掺有壳聚糖磷酸酯@纳米二氧化硅的氯氧化镁水泥及其制备方法：将无水乙醇、磷酸、磷酸三乙酯按比例混合，加入五氧化二磷和壳聚糖，充分反应后，用无水乙醇洗至中性，烘干得到壳聚糖磷酸酯，将壳聚糖磷酸酯溶解于冰醋酸溶液，然后将表面活化处理后的纳米二氧化硅投入其中，充分反应后用去离子水洗涤，烘干得到壳聚糖磷酸酯@纳米二氧化硅。氯化镁、水按比例混合后加入壳聚糖磷酸酯@纳米二氧化硅，充分搅拌并超声后得到氯化镁混合溶液，然后将轻烧菱苦土、氯化镁混合溶液搅拌均匀制成氯氧化镁水泥浆体，注入模具，置于空气中恒温恒湿养护，制备了抗压强度、软化系数较高的氯氧化镁水泥。
Magnesium oxychloride cement doped with chitosan phosphate and nano silicon dioxide and preparation method of magnesium oxychloride cement
一种掺有壳聚糖磷酸酯@纳米二氧化硅的氯氧化镁水泥及其制备方法
CHEN RUOYU (Autor:in) / LIU QIHAO (Autor:in) / JIA QIAN (Autor:in) / LIU XIAOHUA (Autor:in)
22.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2021
Magnesium oxychloride cement and preparation method thereof
| Europäisches Patentamt | 2020