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A platform for research: civil engineering, architecture and urbanism
Anti-mud slow-release slump retaining agent and preparation method thereof
The invention discloses an anti-mud slow-release slump retaining agent and a preparation method thereof, and the anti-mud slow-release slump retaining agent is prepared from the following raw materials in parts by mass: 25-35 parts of isopentenol polyoxyethylene ether, 5-10 parts of acrylic acid, 2-6 parts of sodium methallyl sulfonate, 15-20 parts of a carboxymethyl cellulose carrier, 0.1-0.3 part of a chain transfer agent, 0.2-0.5 part of ascorbic acid and 50-60 parts of deionized water. The carboxymethyl cellulose carrier contains an amino group and an unsaturated olefin phosphate compound. The copolymer formed in the preparation process is loaded on the carboxymethyl cellulose carrier, so that the adsorption of soil to a polycarboxylic acid water reducer functional compound is effectively reduced, and the good anti-mud performance is achieved; the formed non-hydrophilic groups are gradually hydrolyzed into hydrophilic groups in an alkaline environment, so that the slow-release slump retaining effect is achieved; the unsaturated olefin phosphate compound can be used as an adsorption group to adsorb cement particles and is used for enhancing early-stage water reducing property and compensating early-stage slump retaining property.
本申请公开了一种抗泥缓释型保坍剂及其制备方法，其抗泥缓释型保坍剂包括以下质量分数的原料制备得到：异戊烯醇聚氧乙烯醚25～35份，丙烯酸5～10份，甲基丙烯磺酸钠2～6份，羧甲基纤维素载体15～20份，链转移剂0.1～0.3份，抗坏血酸0.2～0.5份，去离子水50～60份，羧甲基纤维素载体上含有氨基和不饱和烯烃磷酸化合物。制备过程中形成的共聚物负载在羧甲基纤维素载体上，有效减少泥土对聚羧酸减水剂功能化合物的吸附，具有良好的抗泥性能；所形成的非亲水基团基团在碱性环境下逐渐水解成为亲水基团，达到缓释保坍效果；不饱和烯烃磷酸化合物可以作为吸附基团吸附水泥颗粒，用于增强前期减水性，补偿前期保坍性。
Anti-mud slow-release slump retaining agent and preparation method thereof
The invention discloses an anti-mud slow-release slump retaining agent and a preparation method thereof, and the anti-mud slow-release slump retaining agent is prepared from the following raw materials in parts by mass: 25-35 parts of isopentenol polyoxyethylene ether, 5-10 parts of acrylic acid, 2-6 parts of sodium methallyl sulfonate, 15-20 parts of a carboxymethyl cellulose carrier, 0.1-0.3 part of a chain transfer agent, 0.2-0.5 part of ascorbic acid and 50-60 parts of deionized water. The carboxymethyl cellulose carrier contains an amino group and an unsaturated olefin phosphate compound. The copolymer formed in the preparation process is loaded on the carboxymethyl cellulose carrier, so that the adsorption of soil to a polycarboxylic acid water reducer functional compound is effectively reduced, and the good anti-mud performance is achieved; the formed non-hydrophilic groups are gradually hydrolyzed into hydrophilic groups in an alkaline environment, so that the slow-release slump retaining effect is achieved; the unsaturated olefin phosphate compound can be used as an adsorption group to adsorb cement particles and is used for enhancing early-stage water reducing property and compensating early-stage slump retaining property.
本申请公开了一种抗泥缓释型保坍剂及其制备方法，其抗泥缓释型保坍剂包括以下质量分数的原料制备得到：异戊烯醇聚氧乙烯醚25～35份，丙烯酸5～10份，甲基丙烯磺酸钠2～6份，羧甲基纤维素载体15～20份，链转移剂0.1～0.3份，抗坏血酸0.2～0.5份，去离子水50～60份，羧甲基纤维素载体上含有氨基和不饱和烯烃磷酸化合物。制备过程中形成的共聚物负载在羧甲基纤维素载体上，有效减少泥土对聚羧酸减水剂功能化合物的吸附，具有良好的抗泥性能；所形成的非亲水基团基团在碱性环境下逐渐水解成为亲水基团，达到缓释保坍效果；不饱和烯烃磷酸化合物可以作为吸附基团吸附水泥颗粒，用于增强前期减水性，补偿前期保坍性。
Anti-mud slow-release slump retaining agent and preparation method thereof
一种抗泥缓释型保坍剂及其制备方法
LU MINGRU (author) / LIU YAN (author) / YUE PIQIAO (author) / LIANG SHIQI (author) / SHEN CONGRUI (author)
2023-09-01
Patent
Electronic Resource
Chinese
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