Polycarboxylic cationic anti-mud agent, and preparation method and application thereof
A polycarboxylic acid-based, cationic technology, applied in the field of concrete admixtures, can solve problems such as limited adaptability, achieve the effects of reducing slump loss, improving initial fluidity, and enhancing dispersion effect
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Embodiment 1
[0020] A polycarboxylic acid cationic anti-mud agent, made of the following raw materials by weight: 49 parts of maleic anhydride, 45 parts of N,N dimethylethanolamine, 47 parts of sodium chloroacetate, 36 parts of acrylic acid, and methyl 65 parts of hydroxypropyl acrylate, 11.2 parts of sodium methacrylate sulfonate, 2.1 parts of ammonium persulfate, 2.2 parts of 30% hydrogen peroxide, 150 parts of acetone, 2.2 parts of VC, 50 parts of 32% sodium hydroxide aqueous solution, deionized water Right amount.
[0021] The preparation method of polycarboxylic acid cationic anti-mud agent includes the following steps:
[0022] 1) Dissolve maleic anhydride in acetone, add N,N dimethylethanolamine dropwise at a constant rate, control the dropping time for 20 minutes, keep it at a constant temperature of 10°C for 5 hours, then heat to 65°C to remove the acetone and cool down ;
[0023] 2) Add 200 parts of deionized water to step 1), adjust the pH of the system to 9 with sodium hydroxide sol...
Embodiment 2
[0029] A polycarboxylic acid cationic anti-mud agent, which is made of the following parts by weight of raw materials: 49 parts of maleic anhydride, 90 parts of N,N dimethylethanolamine, 50 parts of sodium chloroacetate, 40 parts of acrylic acid, and methyl 60 parts of hydroxypropyl acrylate, 14 parts of sodium methacrylate sulfonate, 3.1 parts of ammonium persulfate, 1.2 parts of 30% hydrogen peroxide, 150 parts of acetone, 2 parts of VC, 55 parts of 32% sodium hydroxide aqueous solution, deionized water Right amount.
[0030] The preparation method of polycarboxylic acid cationic anti-mud agent includes the following steps:
[0031] 1) Dissolve maleic anhydride in acetone, add N,N dimethylethanolamine dropwise at a constant rate, control the dropping time for 20 minutes, keep it at a constant temperature of 10°C for 5 hours, then heat to 65°C to remove the acetone and cool down ;
[0032] 2) Add 200 parts of deionized water to step 1), adjust the pH of the system to 9 with sodium...
Embodiment 3
[0038] A polycarboxylic acid cationic anti-mud agent, made from the following parts by weight of raw materials: 60 parts of maleic anhydride, 50 parts of N,N dimethylethanolamine, 50 parts of sodium chloroacetate, 40 parts of acrylic acid, and methyl 70 parts of hydroxypropyl acrylate, 10 parts of sodium methacrylate sulfonate, 3.5 parts of potassium persulfate, 2 parts of 30% hydrogen peroxide, 200 parts of acetone, 2 parts of VC, 56 parts of 32% sodium hydroxide aqueous solution, deionized water Right amount.
[0039] The preparation method of polycarboxylic acid cationic anti-mud agent includes the following steps:
[0040] 1) Dissolve maleic anhydride in acetone, add N,N dimethylethanolamine dropwise at a constant rate, control the dropping time for 15 minutes, keep it at a constant temperature of 15°C for 5 hours, then heat to 65°C to remove the acetone and cool down ;
[0041] 2) Add an appropriate amount of deionized water to step 1), adjust the pH of the system to 9 with so...
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