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A platform for research: civil engineering, architecture and urbanism
Anti-flocculation polycarboxylate superplasticizer and preparation method thereof
The invention discloses an anti-flocculation type polycarboxylate superplasticizer and a preparation method thereof. The anti-flocculation type polycarboxylate superplasticizer comprises a polyester macromonomer, acrylic acid, acrylamide, methacryloyl morpholine, alkyl acrylate phosphate, sodium dodecyl benzene sulfonate, an alcohol compound, ammonium persulfate, sodium hydroxide and water. According to the invention, from the level of the water reducing agent, the adsorption effect of cations in the residual flocculant in the machine-made sand on the polycarboxylate water reducing agent can be reduced, so that the utilization efficiency of the polycarboxylate water reducing agent is improved, and the flocculation resistance of the polycarboxylate water reducing agent is improved; from the aspect of concrete, adverse performance influences such as tackifying and thickening, increasing of mixing amount and water demand, serious loss of fluidity, reduction of concrete strength and the like caused by the residual machine-made sand and gravel flocculating agent on the concrete can be greatly reduced.
本发明公开了一种抗絮凝型聚羧酸减水剂及其制备方法，包括聚酯大单体、丙烯酸、丙烯酰铵、甲基丙烯酰吗啉、烷基丙烯酸酯磷酸酯、十二烷基苯磺酸钠、醇类化合物、过硫酸铵、氢氧化钠和水。本发明从减水剂的层面，可以降低机制砂中残留絮凝剂中的阳离子对聚羧酸减水剂的吸附作用，从而提高聚羧酸减水剂的利用效率，提升聚羧酸减水剂的抗絮凝性；从混凝土的层面，可以大幅减轻因机制砂石絮凝剂残留对混凝土造成的增粘增稠、掺量及需水量变大、流动性损失严重、混凝土强度降低等不良性能影响。
Anti-flocculation polycarboxylate superplasticizer and preparation method thereof
The invention discloses an anti-flocculation type polycarboxylate superplasticizer and a preparation method thereof. The anti-flocculation type polycarboxylate superplasticizer comprises a polyester macromonomer, acrylic acid, acrylamide, methacryloyl morpholine, alkyl acrylate phosphate, sodium dodecyl benzene sulfonate, an alcohol compound, ammonium persulfate, sodium hydroxide and water. According to the invention, from the level of the water reducing agent, the adsorption effect of cations in the residual flocculant in the machine-made sand on the polycarboxylate water reducing agent can be reduced, so that the utilization efficiency of the polycarboxylate water reducing agent is improved, and the flocculation resistance of the polycarboxylate water reducing agent is improved; from the aspect of concrete, adverse performance influences such as tackifying and thickening, increasing of mixing amount and water demand, serious loss of fluidity, reduction of concrete strength and the like caused by the residual machine-made sand and gravel flocculating agent on the concrete can be greatly reduced.
本发明公开了一种抗絮凝型聚羧酸减水剂及其制备方法，包括聚酯大单体、丙烯酸、丙烯酰铵、甲基丙烯酰吗啉、烷基丙烯酸酯磷酸酯、十二烷基苯磺酸钠、醇类化合物、过硫酸铵、氢氧化钠和水。本发明从减水剂的层面，可以降低机制砂中残留絮凝剂中的阳离子对聚羧酸减水剂的吸附作用，从而提高聚羧酸减水剂的利用效率，提升聚羧酸减水剂的抗絮凝性；从混凝土的层面，可以大幅减轻因机制砂石絮凝剂残留对混凝土造成的增粘增稠、掺量及需水量变大、流动性损失严重、混凝土强度降低等不良性能影响。
Anti-flocculation polycarboxylate superplasticizer and preparation method thereof
一种抗絮凝型聚羧酸减水剂及其制备方法
SHI LEI (author) / SU XINLU (author) / MAO RONGLIANG (author)
2022-09-06
Patent
Electronic Resource
Chinese
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