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Preparation method of concrete anti-mud agent

A kind of anti-mud agent and concrete technology, which is applied in the preparation of concrete anti-mud agent and concrete admixture, to achieve the effects of significant steric hindrance effect, hindering adsorption and strong adsorption force

Active Publication Date: 2021-09-03
江苏金木土新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of quaternary ammonium salt mainly utilizes its own positive charge, which is still in the category of electrostatic interaction. How to combine the steric hindrance effect and avoid the intercalation effect of polyether side chains on clay, there is no good solution.

Method used

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  • Preparation method of concrete anti-mud agent
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  • Preparation method of concrete anti-mud agent

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preparation example Construction

[0040] A method of preparing a concrete anti-laminator comprising the preparation of an organic amine initiator and the preparation of the anti-mud agents, the specific steps are as follows,

[0041] (1) Preparation of organic amine initiator

[0042] The glycidyl ether monomer, the secondary amine monomer, reacted under a certain temperature and pressure, and then continued to add an alcoholamine monomer, reacted under a certain temperature and pressure conditions to obtain an organic amine starting agent;

[0043] One of the structural formulas of the organic amine initiator in the above step (1) is shown in the formula (1),

[0044]

[0045] Among them, R 1 R 2 The alkyl group having a carbon atom of methyl, ethyl, butyl, n-hexyl, cyclohexyl group, between 1 to 10; R 3 One of the hydrogen and methyl; M is an integer between 0 to 10;

[0046] In the above steps (1), the structural formula is shown in the following formula (2),

[0047]

[0048] Among them, R 1 R 2 The number...

Embodiment 1

[0073] 100 parts (MW = 130) (MW = 130) were weighed, and the mixture was added 3 times, and 34.6 parts of dimethylamine (MW = 45) was added to 50 ° C (MW = 45), and the reaction temperature was controlled in the reaction temperature. 50 ° C, the reaction time was 3.0 h, the reaction pressure was the pressure generated by the reaction system itself, and the reaction was continued to be added to 23.5 parts (MW = 61), and the incubation continued to react 3.0 h, resulting in a yellowish yellow liquid, that is, the organic amine start The agent is named Q-1.

[0074] Similarly, the following organic amine starting agents were prepared for the synthesis of the amine polyether polyol.

[0075] Organine amine starter Q-2: 100 parts of ethylene glycol dihydrate (MW = 174), N-methylethylamine 33.9 parts (MW = 59), reaction temperature 60 ° C, time 2.0 h; dietholane 60.3 Series (MW = 105), the reaction temperature is 60 ° C, the reaction time is 2.0 h, named Q-2.

[0076] Organic amine star...

Embodiment 2

[0081] It is weighed with an organic amine starter Q-1100.0 parts, and 0.1 parts of catalyst sodium hydroxide, adding a sealed reaction kettle, replaced by nitrogen, and raised to 100 ° C, sequentially add 214.1 parts of ethylene oxide, 70.6 parts of propylene oxide, control. The reaction temperature is between 100 ° C to 130 ° C, the reaction pressure is between 0.0 mPa ~ 0.4 MPa, and the heat is continuously charged from 0.5 h to 1.0 h, cooling to 50 ° C, under -0.1 MPa conditions under reduced pressure distillation volatility The components gave a brown-yellow amine polyether polyol, and the polyether molecular weight was 1572.

[0082]103.6 parts of the iodide (MW = 141.9) were weighed, and the above reaction system was added, and the nitrogen was suppressed to 0.1 MPa, warmed to 60 ° C, and the insulation reaction was 10.0 h, and the volatile component was evaporated under -0.1 MPa. The chemical titration method test the quaternization rate of 93.4%, and the water was diluted...

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Abstract

The invention discloses a preparation method of a concrete anti-mud agent, which comprises steps of preparation of an organic amine initiator and preparation of the anti-mud agent, and the preparation of the organic amine initiator comprises the following steps: reacting glycidyl ether monomer and secondary amine monomer under certain temperature and pressure conditions, then continuously adding an alcohol amine monomer, reacting under certain temperature and pressure conditions, and obtaining the organic amine initiator; the preparation method of the anti-mud agent comprises the following steps: reacting the organic amine initiator, an alkylene oxide monomer and a catalyst under certain temperature and pressure conditions to obtain an amino polyether polyol, continuously adding a halogenated hydrocarbon into the system after the reaction is finished, and reacting under certain temperature and pressure conditions to obtain a finished product of the anti-mud agent.

Description

Technical field [0001] The present invention relates to a method of preparing a concrete extension, specifically a method of preparing a concrete anti-laminator, belonging to the application of concrete extension applications. Background technique [0002] Concrete as a building material is widely used in numerous fields, coincided with cement, sand, water, water, and concrete plus, concrete plug-in is an indispensable component, which can be adjusted and improved. The working performance of concrete materials plays a core role in concrete production technology. [0003] The water reducer is the maximum concrete, the most widely used concrete plus, especially the third generation of high-performance polycarboxylic acid water-absorbing agents, high water reduction rate, good storage performance, and has been widely used in the concrete industry. 70% of the water reduction market share. As the resources of natural gravel aggregates are reproduced and prices are constantly high, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/337C08G65/26C04B24/32
CPCC08G65/337C08G65/2624C04B24/32C08G2650/50
Inventor 范士敏刘江牟忠江张磊
Owner 江苏金木土新材料有限公司
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