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A platform for research: civil engineering, architecture and urbanism
High-performance polycarboxylate superplasticizer and preparation method thereof
The invention provides a high-performance polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of preparation of polycarboxylate superplasticizers, the polycarboxylate superplasticizer comprises 80-90 parts of a viscosity-reducing polycarboxylate superplasticizer, 10-15 parts of modified microcrystalline cellulose, 0.1-0.3 part of an antifoaming agent, and 0.1-0.3 part of an air entraining agent; the viscosity-reducing polycarboxylic acid water reducing agent is prepared from the following components in parts by weight: 50 to 80 parts of methyl allyl polyoxyethylene ether, 20 to 50 parts of acrylic acid, 5 to 10 parts of 2-acrylamide-2-methyl propane sulfonic acid, 7 to 10 parts of vinyl trimethoxy silane, 1 to 3 parts of sodium formaldehyde sulfoxylate, 1 to 3 parts of ammonium persulfate and 0.1 to 1 part of alpha-methyl styrene dimer. The viscosity-reducing polycarboxylic acid water reducer and the modified microcrystalline cellulose are compounded for use, so that the initial dispersion performance and dispersion retention performance of the polycarboxylic acid water reducer are further improved, and meanwhile, the viscosity-reducing capacity, the water-reducing rate and the mechanical property of the water reducer are also improved.
本发明提供了一种高性能聚羧酸减水剂及其制备方法，属于聚羧酸减水剂制备技术领域，所述聚羧酸减水剂包括：降黏聚羧酸减水剂80‑90份、改性微晶纤维素10‑15份、消泡剂0.1‑0.3份、引气剂0.1‑0.3份；所述降黏聚羧酸减水剂，包括：甲基烯丙基聚氧乙烯醚50‑80份、丙烯酸20‑50份、2‑丙烯酰胺‑2‑甲基丙烷磺酸5‑10份、乙烯基三甲氧基硅烷7‑10份、次硫酸氢钠甲醛1‑3份、过硫酸铵1‑3份、α‑甲基苯乙烯二聚体0.1‑1份。本发明通过将降黏聚羧酸减水剂和改性微晶纤维素复配使用，进一步提高了聚羧酸减水剂的初始分散性能和分散保持性能，同时还改善了减水剂的降粘能力、减水率和力学性能。
High-performance polycarboxylate superplasticizer and preparation method thereof
The invention provides a high-performance polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of preparation of polycarboxylate superplasticizers, the polycarboxylate superplasticizer comprises 80-90 parts of a viscosity-reducing polycarboxylate superplasticizer, 10-15 parts of modified microcrystalline cellulose, 0.1-0.3 part of an antifoaming agent, and 0.1-0.3 part of an air entraining agent; the viscosity-reducing polycarboxylic acid water reducing agent is prepared from the following components in parts by weight: 50 to 80 parts of methyl allyl polyoxyethylene ether, 20 to 50 parts of acrylic acid, 5 to 10 parts of 2-acrylamide-2-methyl propane sulfonic acid, 7 to 10 parts of vinyl trimethoxy silane, 1 to 3 parts of sodium formaldehyde sulfoxylate, 1 to 3 parts of ammonium persulfate and 0.1 to 1 part of alpha-methyl styrene dimer. The viscosity-reducing polycarboxylic acid water reducer and the modified microcrystalline cellulose are compounded for use, so that the initial dispersion performance and dispersion retention performance of the polycarboxylic acid water reducer are further improved, and meanwhile, the viscosity-reducing capacity, the water-reducing rate and the mechanical property of the water reducer are also improved.
本发明提供了一种高性能聚羧酸减水剂及其制备方法，属于聚羧酸减水剂制备技术领域，所述聚羧酸减水剂包括：降黏聚羧酸减水剂80‑90份、改性微晶纤维素10‑15份、消泡剂0.1‑0.3份、引气剂0.1‑0.3份；所述降黏聚羧酸减水剂，包括：甲基烯丙基聚氧乙烯醚50‑80份、丙烯酸20‑50份、2‑丙烯酰胺‑2‑甲基丙烷磺酸5‑10份、乙烯基三甲氧基硅烷7‑10份、次硫酸氢钠甲醛1‑3份、过硫酸铵1‑3份、α‑甲基苯乙烯二聚体0.1‑1份。本发明通过将降黏聚羧酸减水剂和改性微晶纤维素复配使用，进一步提高了聚羧酸减水剂的初始分散性能和分散保持性能，同时还改善了减水剂的降粘能力、减水率和力学性能。
High-performance polycarboxylate superplasticizer and preparation method thereof
一种高性能聚羧酸减水剂及其制备方法
REN PENGFEI (author) / LI BENXIU (author) / LUO DIPING (author)
2024-08-16
Patent
Electronic Resource
Chinese
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High-performance polycarboxylate superplasticizer and preparation method thereof
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