High-efficiency polycarboxylic acid water-reducing composite agent and production device thereof

A production device and technology of polycarboxylate, applied in the field of concrete admixture, can solve the problems of unreliable effect, unsatisfactory polymerization effect, environmental protection and other problems of polycarboxylate water reducer, achieve good promotion value and market prospect, and reliable performance , the effect of improving adaptability

Active Publication Date: 2014-02-05
湖北三可建材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a high-efficiency polycarboxylate water-reducing composite agent and its production device to improve the unsatisfactory polymerization effect of existing equipment, the presence of certain monomers in the polycarboxylate water-reducer, and environmental hazards. Technical problems such as unreliable effect of water agent

Method used

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  • High-efficiency polycarboxylic acid water-reducing composite agent and production device thereof
  • High-efficiency polycarboxylic acid water-reducing composite agent and production device thereof
  • High-efficiency polycarboxylic acid water-reducing composite agent and production device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: 28% of polycarboxylate water reducer, 3% of cellulose ether, 0.3% of sodium lauryl sulfate, 3% of methacrylic acid, 2% of nano silicon dioxide, 0.5% of sodium lignosulfonate, 0.3% of polyether JCYX7, 0.3% of sodium nitrite, 2% of triethanolamine, and the balance of water were sent to the compounding tank for compounding, and the high-efficiency polycarboxylate water-reducing compound was prepared after stirring evenly.

[0024] Polycarboxylate superplasticizer is to send maleic anhydride, allyl polyoxyethylene ether sulfate, and sodium methacrylate sulfonate into the synthetic enamel reaction kettle at a ratio of 1:3:2.5, and the reaction temperature is 88°C. Configure the initiator (ammonium persulfate and potassium persulfate to account for 4% of the monomer weight after mixing) into a 10% aqueous solution, add it dropwise to the kettle for 1 hour, and feed nitrogen into the kettle. React for 2 hours, raise the temperature to 5°C for aging, continue to reac...

Embodiment 2

[0025] Example 2: 31% polycarboxylate water reducer, 3.5% cellulose ether, 0.35% sodium lauryl sulfate, 3.5% propylene-benzene nano core-shell emulsion, 3% nano silicon dioxide, lignin sulfonic acid 0.6% of sodium, 0.35% of polyether JCYX7, 0.35% of sodium nitrite, 2.5% of triethanolamine, and the balance of water were respectively sent into the compounding tank for compounding, and the high-efficiency polycarboxylate water-reducing compound agent was obtained after stirring evenly.

[0026] Polycarboxylate superplasticizer is to send maleic anhydride, allyl polyoxyethylene ether sulfate, and sodium methacrylate sulfonate into the synthetic enamel reaction kettle at a ratio of 1:3:2.5, and the reaction temperature is 93°C. Configure the initiator (ammonium persulfate and potassium persulfate to account for 4% of the monomer weight after mixing) into a 12.5% ​​aqueous solution, add it dropwise to the kettle for 1 hour, and feed nitrogen into the kettle. React for 2 hours, raise...

Embodiment 3

[0027] Example 3: 34% of polycarboxylate water reducer, 4% of cellulose ether, 0.4% of sodium lauryl sulfate, 4% of propylene-benzene nano-core-shell emulsion, 3.5% of nano-silicon dioxide, and lignosulfonic acid 0.65% sodium, 0.4% polyether JCYX7, 0.4% sodium nitrite, 3% triethanolamine, and the balance water were sent to the compounding tank for compounding, and the high-efficiency polycarboxylate water-reducing compound agent was prepared after stirring evenly.

[0028] Polycarboxylate superplasticizer is to send maleic anhydride, allyl polyoxyethylene ether sulfate, and sodium methacrylate sulfonate into the synthetic enamel reaction kettle at a ratio of 1:3:2.5, and the reaction temperature is 98°C. Configure the initiator (ammonium persulfate and potassium persulfate to account for 4% of the weight of the monomer after mixing) into a 15% aqueous solution, add it dropwise to the kettle for 2 hours, and feed nitrogen into the kettle. After the addition of materials, React ...

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Abstract

The invention relates to a high-efficiency polycarboxylic acid water-reducing composite agent prepared by complexation of a polycarboxylic acid water-reducing agent, cellulose ether, sodium lauryl sulfate, propylene-benzene core-shell emulsion, nano-silica, lignin sulfonate, a defoaming agent, sodium nitrite, an amine alcohol enhancer, and water. The formula is reasonable, and has reliable performance. The polycarboxylic acid water-reducing agent has good water-reducing effect, wherein a water-reducing rage can be higher than 35%. When the water-reducing agent is reasonably complexed with a set retardant, a defoaming agent, an enhancing agent, an early-strength agent, and a preservative, product adaptability can be improved, and consumer application requirement can be satisfied. According to a polycarboxylic acid water-reducing agent production device, intermediate heating can be carried out upon reaction materials in a kettle with a heating medium in a jacket layer; information of a flow meter and a thermometer can be collected by a controller; a motor and the flow meter can be further reasonably controlled, such that the materials in the kettle re polymerized strictly according to a preset condition; with a complex tank, accurately measured materials can be uniformly mixed, such that reliable water-reducing agent product quality can be ensured. The product has good popularization value and market prospect.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a high-efficiency polycarboxylate water-reducing composite agent and a production device. Background technique [0002] Water reducing agent is a common admixture in the preparation of concrete. It can reduce the water consumption during concrete construction, reduce the water-cement ratio, improve the strength of concrete, shorten the curing period of concrete, ensure the construction progress of the project, and make the concrete have long-term durability and resistance. corrosive. Polycarboxylate superplasticizer is a commonly used high-efficiency superplasticizer at present. Its production conditions are more severe than general naphthalene-based superplasticizers. If the monomer polymerization is not complete during the polymerization process, not only will there be environmental hazards, but also affect the performance of concrete. Contents of the invention [0003] The object of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/30
Inventor 唐耀华
Owner 湖北三可建材科技股份有限公司
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