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Preparation method of calcium carbonate fiber for improving performance of cement-based composite material
The invention discloses a preparation method of calcium carbonate fiber for improving the performance of a cement-based composite material. The method comprises the following steps of S1, mixing calcium carbonate and absolute ethyl alcohol according to a weight ratio of 1: 2, and cleaning, filtering and drying calcium carbonate powder; S2, mixing calcium carbonate and acetic acid according to a weight ratio of 5: 10, stirring for 20 minutes at 100-120 r/min, uniformly mixing to obtain a mixture, and standing for 2 hours to obtain a mixture solution A ((CH3-COO)2Ca solution); S3, adding 40 parts by mass of citric acid and the mixture solution A ((CH3-COO)2Ca solution) according to a weight ratio of acetic acid to citric acid of 1: 1, stirring for 30 min at a speed of 100-120 r/min, uniformly mixing, and making the pH value tend to be stable, thereby obtaining a mixture B; S4, mechanically stirring the mixture B in a constant-temperature water bath of 70 DEG C at 100-120 r/min for 10 min, adding 0.5-1 wt% of sodium dodecyl benzene sulfonate, continuously stirring for 30 min to obtain a milk white liquid C, and drying the milk white liquid C in a constant-temperature drying box of 100 DEG C to obtain a dry gel D; and S5, calcining the dry gel D in a muffle furnace of 600 DEG C for 2 hours to obtain the calcium carbonate fiber.
本发明公开了一种改善水泥基复合材料性能用碳酸钙纤维的制备方法，所述方法包括如下步骤：S1：按照碳酸钙和无水乙醇的重量比为1：2的比例混合，对碳酸钙粉体进行清洗、过滤、干燥；S2：按照碳酸钙和乙酸的重量比为5：10的比例混合，在100‑120r/min下搅拌20min混合均匀，得到混合物，并静置2h得到混合物溶液A((CH3‑COO)2Ca溶液)；S3：按照乙酸和柠檬酸的重量比为1:1的比例加入40份质量的柠檬酸与混合物溶液A((CH3‑COO)2Ca溶液)，并在100‑120r/min下搅拌30min混合均匀，使pH值趋于稳定得到混合物B；S4：将混合物B在70℃恒温水浴中100‑120r/min机械搅拌10min中，加入重量比为0.5％～1％的十二烷基苯磺酸钠继续搅拌30min，得到乳白色液体C，100℃恒温干燥箱干燥，得到干凝胶D；S5：将干凝胶D置于600℃马弗炉中煅烧2h，得到碳酸钙纤维。
Preparation method of calcium carbonate fiber for improving performance of cement-based composite material
The invention discloses a preparation method of calcium carbonate fiber for improving the performance of a cement-based composite material. The method comprises the following steps of S1, mixing calcium carbonate and absolute ethyl alcohol according to a weight ratio of 1: 2, and cleaning, filtering and drying calcium carbonate powder; S2, mixing calcium carbonate and acetic acid according to a weight ratio of 5: 10, stirring for 20 minutes at 100-120 r/min, uniformly mixing to obtain a mixture, and standing for 2 hours to obtain a mixture solution A ((CH3-COO)2Ca solution); S3, adding 40 parts by mass of citric acid and the mixture solution A ((CH3-COO)2Ca solution) according to a weight ratio of acetic acid to citric acid of 1: 1, stirring for 30 min at a speed of 100-120 r/min, uniformly mixing, and making the pH value tend to be stable, thereby obtaining a mixture B; S4, mechanically stirring the mixture B in a constant-temperature water bath of 70 DEG C at 100-120 r/min for 10 min, adding 0.5-1 wt% of sodium dodecyl benzene sulfonate, continuously stirring for 30 min to obtain a milk white liquid C, and drying the milk white liquid C in a constant-temperature drying box of 100 DEG C to obtain a dry gel D; and S5, calcining the dry gel D in a muffle furnace of 600 DEG C for 2 hours to obtain the calcium carbonate fiber.
本发明公开了一种改善水泥基复合材料性能用碳酸钙纤维的制备方法，所述方法包括如下步骤：S1：按照碳酸钙和无水乙醇的重量比为1：2的比例混合，对碳酸钙粉体进行清洗、过滤、干燥；S2：按照碳酸钙和乙酸的重量比为5：10的比例混合，在100‑120r/min下搅拌20min混合均匀，得到混合物，并静置2h得到混合物溶液A((CH3‑COO)2Ca溶液)；S3：按照乙酸和柠檬酸的重量比为1:1的比例加入40份质量的柠檬酸与混合物溶液A((CH3‑COO)2Ca溶液)，并在100‑120r/min下搅拌30min混合均匀，使pH值趋于稳定得到混合物B；S4：将混合物B在70℃恒温水浴中100‑120r/min机械搅拌10min中，加入重量比为0.5％～1％的十二烷基苯磺酸钠继续搅拌30min，得到乳白色液体C，100℃恒温干燥箱干燥，得到干凝胶D；S5：将干凝胶D置于600℃马弗炉中煅烧2h，得到碳酸钙纤维。
Preparation method of calcium carbonate fiber for improving performance of cement-based composite material
一种改善水泥基复合材料性能用碳酸钙纤维的制备方法
TIAN XINGYOU (author) / LIU YANYAN (author) / LI XIAOXIAO (author) / WANG HUA (author) / SUN JUN (author) / ZHANG HAIBAO (author) / HU KUN (author) / YUAN YUN (author) / CAO YUXIANG (author) / YUAN LI (author)
2022-01-11
Patent
Electronic Resource
Chinese
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