Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Long-acting water-retaining agent for wet-mixed mortar and preparation method thereof
The invention provides a wet-mixed mortar long-acting water-retaining agent and a preparation method thereof, the wet-mixed mortar long-acting water-retaining agent is formed by free radical copolymerization of four monomers A, B, C and D. The monomer A is an acrylic acid compound, the monomer B is an acrylamide compound, the monomer C is an acrylic acid hydroxyalkyl ester compound, and the monomer D is vinyl acetate. The molar ratio of the monomer A to the monomer B to the monomer C to the monomer D is 1.0: (1.0-3.0): (0.5-3.0): (8.0-20.0), and the weight-average molecular weight of the wet-mixed mortar long-acting water-retaining agent is 1 * 10 < 5 >-3 * 10 < 5 >. When the long-acting water-retaining agent for wet-mixed mortar is applied to the wet-mixed mortar, the workability of the mortar is good, segregation and bleeding phenomena are avoided, the consistency loss is small, the working timeliness is long, the water-retaining property of the mortar is good, and the water-retaining rate can reach 93% or above after 30 hours.
本发明提供了一种湿拌砂浆长效保水剂及其制备方法，该湿拌砂浆长效保水剂由A、B、C、D四种单体通过自由基共聚而成，单体A是丙烯酸类化合物，单体B是丙烯酰胺类化合物，单体C是丙烯酸羟烷基酯类化合物，单体D是醋酸乙烯酯，单体A、单体B、单体C和单体D的摩尔比为1.0:(1.0‑3.0):(0.5‑3.0):(8.0‑20.0)，湿拌砂浆长效保水剂的重均分子量为1×105‑3×105。本发明湿拌砂浆长效保水剂应用到湿拌砂浆中使砂浆和易性佳，不会出现离析、泌水现象，稠度损失小，工作时效性长，砂浆保水性佳，30小时后保水率可达93％以上。
Long-acting water-retaining agent for wet-mixed mortar and preparation method thereof
The invention provides a wet-mixed mortar long-acting water-retaining agent and a preparation method thereof, the wet-mixed mortar long-acting water-retaining agent is formed by free radical copolymerization of four monomers A, B, C and D. The monomer A is an acrylic acid compound, the monomer B is an acrylamide compound, the monomer C is an acrylic acid hydroxyalkyl ester compound, and the monomer D is vinyl acetate. The molar ratio of the monomer A to the monomer B to the monomer C to the monomer D is 1.0: (1.0-3.0): (0.5-3.0): (8.0-20.0), and the weight-average molecular weight of the wet-mixed mortar long-acting water-retaining agent is 1 * 10 < 5 >-3 * 10 < 5 >. When the long-acting water-retaining agent for wet-mixed mortar is applied to the wet-mixed mortar, the workability of the mortar is good, segregation and bleeding phenomena are avoided, the consistency loss is small, the working timeliness is long, the water-retaining property of the mortar is good, and the water-retaining rate can reach 93% or above after 30 hours.
本发明提供了一种湿拌砂浆长效保水剂及其制备方法，该湿拌砂浆长效保水剂由A、B、C、D四种单体通过自由基共聚而成，单体A是丙烯酸类化合物，单体B是丙烯酰胺类化合物，单体C是丙烯酸羟烷基酯类化合物，单体D是醋酸乙烯酯，单体A、单体B、单体C和单体D的摩尔比为1.0:(1.0‑3.0):(0.5‑3.0):(8.0‑20.0)，湿拌砂浆长效保水剂的重均分子量为1×105‑3×105。本发明湿拌砂浆长效保水剂应用到湿拌砂浆中使砂浆和易性佳，不会出现离析、泌水现象，稠度损失小，工作时效性长，砂浆保水性佳，30小时后保水率可达93％以上。
Long-acting water-retaining agent for wet-mixed mortar and preparation method thereof
一种湿拌砂浆长效保水剂及其制备方法
GAO NANXIAO (Autor:in) / QIAO MIN (Autor:in) / RAN QIANPING (Autor:in) / CHEN JIAN (Autor:in) / SHAN GUANGCHENG (Autor:in) / MAO YUAN (Autor:in) / ZHOU XINWEN (Autor:in) / WANG WEI (Autor:in) / ZHAO SHUANG (Autor:in) / ZENG LUPING (Autor:in)
08.12.2023
Patent
Elektronische Ressource
Chinesisch
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