Alkali-free liquid accelerator and preparation method thereof

The invention discloses an alkali-free liquid accelerator, which is characterized by being prepared from the following components in percentage by mass: 45 to 55 weight percent of coagulation accelerating component, 1 to 3 weight percent of early strength component, 4.5 to 6.5 weight percent of stabilizing component, 0.9 to 1.2 weight percent of amino acid, 0.8 to 1.5 weight percent of PH (Potential of Hydrogen) regulator and the balance of water. Wherein the coagulation accelerating component at least comprises a first coagulation accelerating group and a second coagulation accelerating group, the first coagulation accelerating group comprises polyaluminum sulfate, and the second coagulation accelerating group comprises at least one of nanometer aluminum oxide, nanometer aluminum hydroxide and magnesium aluminum sulfate. 本申请公开了一种无碱液体速凝剂，其特征在于，以质量百分数计，包括如下组分，促凝组分45-55wt％，早强组分1-3wt％，稳定组分4.5-6.5wt％，氨基酸0.9-1.2wt％，PH调节剂0.8-1.5wt％，余量为水。其中，所述促凝组分至少包括第一促凝组和第二促凝组，所述第一促凝组包括聚合硫酸铝，第二促凝组包括纳米氧化铝、纳米氢氧化铝、硫酸镁铝中的至少一种。