A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Accelerating agent B1s and preparation method thereof
The invention provides an accelerator B1s and a preparation method thereof, and solves the problems that an alkali-free (low-alkali) accelerator is poor in adaptability to cement types, poor in slurry workability, high in dust raising and resilience and the like, and the problem that an organic-inorganic composite accelerator is prone to uneven dispersion in a concrete mixture. The preparation method provided by the invention comprises the following steps: mixing acrylic acid, a lipophilic organic solvent and deionized water, stirring, condensing, refluxing and heating to obtain a first mixed solution; adding an ammonium persulfate solution into the first mixed solution to obtain a second mixed solution; adding a methallyl sulfonic acid solution into the second mixed solution, and stirring at a second constant temperature to obtain a precursor solution; evaporating the precursor solution to dryness to obtain an accelerator precursor B1; and mixing the accelerator precursor B1, aluminum sulfate and distilled water, and stirring to obtain the accelerator B1s. The accelerator B1s prepared by the invention has relatively good adaptability, coagulation accelerating effect and stability, and is high in later strength.
本申请提供了一种速凝剂B1s及其制备方法，解决了无碱(低碱)速凝剂对水泥种类适应性差、料浆和易性差、扬尘和回弹大等问题，以及有机无机复合速凝剂容易出现速凝剂在混凝土拌合料中分散不均匀的问题。本申请提供的制备方法包括：将丙烯酸、亲脂类有机溶剂、去离子水混合，搅拌，冷凝回流，加热得到第一混合液；向第一混合液中加入过硫酸铵溶液，得到第二混合液；向第二混合液中加入甲基丙烯磺酸溶液，以第二温度恒温搅拌得到前体溶液；将前体溶液蒸干得到速凝剂前体B1；将速凝剂前体B1、硫酸铝、蒸馏水混合，搅拌得到速凝剂B1s。本申请制备的速凝剂B1s具有较好的适应性、促凝效果和稳定性，且后期强度高。
Accelerating agent B1s and preparation method thereof
The invention provides an accelerator B1s and a preparation method thereof, and solves the problems that an alkali-free (low-alkali) accelerator is poor in adaptability to cement types, poor in slurry workability, high in dust raising and resilience and the like, and the problem that an organic-inorganic composite accelerator is prone to uneven dispersion in a concrete mixture. The preparation method provided by the invention comprises the following steps: mixing acrylic acid, a lipophilic organic solvent and deionized water, stirring, condensing, refluxing and heating to obtain a first mixed solution; adding an ammonium persulfate solution into the first mixed solution to obtain a second mixed solution; adding a methallyl sulfonic acid solution into the second mixed solution, and stirring at a second constant temperature to obtain a precursor solution; evaporating the precursor solution to dryness to obtain an accelerator precursor B1; and mixing the accelerator precursor B1, aluminum sulfate and distilled water, and stirring to obtain the accelerator B1s. The accelerator B1s prepared by the invention has relatively good adaptability, coagulation accelerating effect and stability, and is high in later strength.
本申请提供了一种速凝剂B1s及其制备方法，解决了无碱(低碱)速凝剂对水泥种类适应性差、料浆和易性差、扬尘和回弹大等问题，以及有机无机复合速凝剂容易出现速凝剂在混凝土拌合料中分散不均匀的问题。本申请提供的制备方法包括：将丙烯酸、亲脂类有机溶剂、去离子水混合，搅拌，冷凝回流，加热得到第一混合液；向第一混合液中加入过硫酸铵溶液，得到第二混合液；向第二混合液中加入甲基丙烯磺酸溶液，以第二温度恒温搅拌得到前体溶液；将前体溶液蒸干得到速凝剂前体B1；将速凝剂前体B1、硫酸铝、蒸馏水混合，搅拌得到速凝剂B1s。本申请制备的速凝剂B1s具有较好的适应性、促凝效果和稳定性，且后期强度高。
Accelerating agent B1s and preparation method thereof
一种速凝剂B1s及其制备方法
GAO RUI (author) / LI QIUJUAN (author) / ZHANG YIHONG (author) / PAN QIN (author) / SUN YANG (author)
2024-02-06
Patent
Electronic Resource
Chinese
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