A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of concrete anti-segregation agent and anti-segregation agent
The invention relates to the field of concrete admixtures, and particularly discloses a preparation method of a concrete anti-segregation agent and the anti-segregation agent.The preparation method comprises the following steps that aliphatic dibasic acid and dihydric alcohol are subjected to condensation polymerization, and a prepolymer is obtained; mixing the prepolymer with inorganic particles, aromatic dibasic acid and dihydric alcohol again, heating and carrying out vacuum reaction to obtain polyester polyol; the preparation method comprises the following steps: dissolving 1, 3-dimethoxy-5-toluene in an organic solvent, adding N-bromosuccinimide and an initiator, carrying out a bromination reaction to obtain an organic phase, reacting the organic phase with triphenylphosphine in the organic solvent to obtain a precipitate, and purifying the precipitate to obtain an organic phosphine salt; 35-50 parts of polyester polyol, 20-35 parts of organic phosphine salt, 2-6 parts of an active agent and 1-2 parts of magnesium aluminum silicate are kneaded and granulated, and the anti-segregation agent is obtained. The obtained anti-segregation agent can effectively prevent concrete segregation and bleeding, and enables concrete to have excellent flowing property.
本申请涉及混凝土外加剂领域，具体公开了一种混凝土抗离析剂的制备方法及抗离析剂，其制备方法包括以下步骤：将脂肪族二元酸与二元醇进行缩聚反应，得到预聚体；将预聚体与无机粒子、芳香族二元酸和二元醇再次混合，升温真空反应，得到聚酯多元醇；将1,3‑二甲氧基‑5‑甲苯溶于有机溶剂，加入N‑溴代琥珀酰亚胺与引发剂进行溴代反应，得到有机相，将有机相与三苯基膦在有机溶剂中反应得到沉淀，将沉淀经纯化处理后得到有机膦盐；将聚酯多元醇35‑50份、有机膦盐20‑35份、活性剂2‑6份和硅酸镁铝1‑2份进行捏合、造粒，得到抗离析剂。得到的抗离析剂能够有效防止混凝土离析、泌水，且使得混凝土具有优异的流动性能。
Preparation method of concrete anti-segregation agent and anti-segregation agent
The invention relates to the field of concrete admixtures, and particularly discloses a preparation method of a concrete anti-segregation agent and the anti-segregation agent.The preparation method comprises the following steps that aliphatic dibasic acid and dihydric alcohol are subjected to condensation polymerization, and a prepolymer is obtained; mixing the prepolymer with inorganic particles, aromatic dibasic acid and dihydric alcohol again, heating and carrying out vacuum reaction to obtain polyester polyol; the preparation method comprises the following steps: dissolving 1, 3-dimethoxy-5-toluene in an organic solvent, adding N-bromosuccinimide and an initiator, carrying out a bromination reaction to obtain an organic phase, reacting the organic phase with triphenylphosphine in the organic solvent to obtain a precipitate, and purifying the precipitate to obtain an organic phosphine salt; 35-50 parts of polyester polyol, 20-35 parts of organic phosphine salt, 2-6 parts of an active agent and 1-2 parts of magnesium aluminum silicate are kneaded and granulated, and the anti-segregation agent is obtained. The obtained anti-segregation agent can effectively prevent concrete segregation and bleeding, and enables concrete to have excellent flowing property.
本申请涉及混凝土外加剂领域，具体公开了一种混凝土抗离析剂的制备方法及抗离析剂，其制备方法包括以下步骤：将脂肪族二元酸与二元醇进行缩聚反应，得到预聚体；将预聚体与无机粒子、芳香族二元酸和二元醇再次混合，升温真空反应，得到聚酯多元醇；将1,3‑二甲氧基‑5‑甲苯溶于有机溶剂，加入N‑溴代琥珀酰亚胺与引发剂进行溴代反应，得到有机相，将有机相与三苯基膦在有机溶剂中反应得到沉淀，将沉淀经纯化处理后得到有机膦盐；将聚酯多元醇35‑50份、有机膦盐20‑35份、活性剂2‑6份和硅酸镁铝1‑2份进行捏合、造粒，得到抗离析剂。得到的抗离析剂能够有效防止混凝土离析、泌水，且使得混凝土具有优异的流动性能。
Preparation method of concrete anti-segregation agent and anti-segregation agent
一种混凝土抗离析剂的制备方法及抗离析剂
LU JIANNAN (author) / YANG JIANYI (author) / LI CHAOWEN (author) / GU KAI (author)
2024-04-16
Patent
Electronic Resource
Chinese
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