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Fluorine-containing alkali-free liquid accelerator as well as preparation method and application thereof
The invention relates to a fluorine-containing alkali-free liquid accelerator as well as a preparation method and application thereof. The fluorine-containing alkali-free liquid accelerator comprises the following components in parts by weight: 48-52 parts of aluminum sulfate, 7-9 parts of magnesium fluosilicate, 10-11 parts of diethanol amine, 0.91-1.15 parts of a composite flocculant, 1-3 parts of oxalic acid, 1-3 parts of ethylenediamine tetraacetic acid and 20.85-32.09 parts of water. The preparation method comprises the following steps: (1) adding aluminum sulfate into water, heating and stirring until the aluminum sulfate is dissolved; then adding magnesium fluosilicate, and stirring until magnesium fluosilicate is dissolved; (2) sequentially adding a composite flocculant and diethanol amine in parts by weight, and continuously stirring; and (3) adding oxalic acid and ethylenediamine tetraacetic acid, stirring until the liquid is clarified, and naturally cooling to obtain the final fluorine-containing alkali-free liquid accelerator. Compared with the prior art, the fluorine-containing alkali-free liquid accelerator has the advantages that the solubility, the solution stability and the rapid setting effect of aluminum sulfate are improved, and the rebound rate of sprayed concrete is remarkably reduced.
本发明涉及一种含氟无碱液体速凝剂及其制备方法与应用，其包括以下重量份组分：硫酸铝48‑52份，氟硅酸镁7‑9份，二乙醇胺10‑11份，复合絮凝剂0.91‑1.15份，草酸1‑3份，乙二胺四乙酸1‑3份，水20.85‑32.09份。制备方法如下：(1)将硫酸铝加入水中，加热、搅拌至溶解；随后加入氟硅酸镁，搅拌至溶解；(2)按重量份数依次加入复合絮凝剂和二乙醇胺，持续搅拌；(3)加入草酸和乙二胺四乙酸，搅拌至液体澄清后自然冷却，得到最终的含氟无碱液体速凝剂。与现有技术相比，本发明的含氟无碱液体速凝剂改善了硫酸铝的溶解度、溶液稳定性、速凝效果，并显著降低了喷射混凝土的回弹率。
Fluorine-containing alkali-free liquid accelerator as well as preparation method and application thereof
The invention relates to a fluorine-containing alkali-free liquid accelerator as well as a preparation method and application thereof. The fluorine-containing alkali-free liquid accelerator comprises the following components in parts by weight: 48-52 parts of aluminum sulfate, 7-9 parts of magnesium fluosilicate, 10-11 parts of diethanol amine, 0.91-1.15 parts of a composite flocculant, 1-3 parts of oxalic acid, 1-3 parts of ethylenediamine tetraacetic acid and 20.85-32.09 parts of water. The preparation method comprises the following steps: (1) adding aluminum sulfate into water, heating and stirring until the aluminum sulfate is dissolved; then adding magnesium fluosilicate, and stirring until magnesium fluosilicate is dissolved; (2) sequentially adding a composite flocculant and diethanol amine in parts by weight, and continuously stirring; and (3) adding oxalic acid and ethylenediamine tetraacetic acid, stirring until the liquid is clarified, and naturally cooling to obtain the final fluorine-containing alkali-free liquid accelerator. Compared with the prior art, the fluorine-containing alkali-free liquid accelerator has the advantages that the solubility, the solution stability and the rapid setting effect of aluminum sulfate are improved, and the rebound rate of sprayed concrete is remarkably reduced.
本发明涉及一种含氟无碱液体速凝剂及其制备方法与应用，其包括以下重量份组分：硫酸铝48‑52份，氟硅酸镁7‑9份，二乙醇胺10‑11份，复合絮凝剂0.91‑1.15份，草酸1‑3份，乙二胺四乙酸1‑3份，水20.85‑32.09份。制备方法如下：(1)将硫酸铝加入水中，加热、搅拌至溶解；随后加入氟硅酸镁，搅拌至溶解；(2)按重量份数依次加入复合絮凝剂和二乙醇胺，持续搅拌；(3)加入草酸和乙二胺四乙酸，搅拌至液体澄清后自然冷却，得到最终的含氟无碱液体速凝剂。与现有技术相比，本发明的含氟无碱液体速凝剂改善了硫酸铝的溶解度、溶液稳定性、速凝效果，并显著降低了喷射混凝土的回弹率。
Fluorine-containing alkali-free liquid accelerator as well as preparation method and application thereof
一种含氟无碱液体速凝剂及其制备方法与应用
SUN ZHENPING (author) / LIU YAN (author) / TIAN JUNTAO (author) / ZHANG TING (author)
2024-06-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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