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Preparation method of liquid cement grinding aid

A cement grinding aid and liquid technology, which is applied in the field of preparation of liquid cement grinding aids, can solve the problems of not improving the performance of antistatic, penetration and diffusion, etc., to improve cement quality, reduce production costs, and increase grinding aid efficiency Effect

Inactive Publication Date: 2019-05-10
溧阳市精卫新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the product made by this scheme does not improve its antistatic, penetration and diffusion properties.

Method used

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  • Preparation method of liquid cement grinding aid
  • Preparation method of liquid cement grinding aid
  • Preparation method of liquid cement grinding aid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A liquid cement grinding aid, characterized in that: it is made of the following raw materials: dodecyl dimethyl tertiary amine, didodecyl methylamine, isopropanol, methyl chloride, alkali, and an appropriate amount of deionized water .

[0024] Concrete, the preparation method of liquid cement grinding aid comprises the following steps:

[0025] (1) Feeding: Add isopropanol, deionized water, dodecyldimethyl tertiary amine, didodecylmethylamine successively in the reactor, then add catalyst base, and stir;

[0026] (2) Reaction: After replacing the air in the reactor, gradually increase the temperature, control the temperature at 80-85°C, feed in methyl chloride while stirring, and react for 6 hours under a pressure of 0.2MPA to obtain material W;

[0027] (3) Discharging: After the material W is cooled to normal pressure, add an appropriate amount of deionized water to dilute, discharge, and fill the finished product.

[0028] Material W is a mixture of dodecyl trime...

Embodiment 2

[0044] A liquid cement grinding aid, characterized in that: it is made of the following raw materials in weight ratio: mixed reactant, dodecyl dimethyl tertiary amine, didodecyl methylamine, isopropanol, methyl chloride , alkali, and appropriate amount of deionized water.

[0045] Concrete, the preparation method of liquid cement grinding aid comprises the following steps:

[0046] (1) Feeding: Add isopropanol, deionized water, dodecyldimethyl tertiary amine, didodecylmethylamine successively in the reactor, then add catalyst base, and stir;

[0047] (2) Reaction: After replacing the air in the reactor, gradually increase the temperature, control the temperature at 80-85°C, feed in methyl chloride while stirring, and react for 6 hours under a pressure of 0.3MPA to obtain material W;

[0048] (3) Discharging: After the material W is cooled to normal pressure, add an appropriate amount of deionized water to dilute, discharge, and fill the finished product.

[0049] The mixed r...

Embodiment 3

[0065] A liquid cement grinding aid, characterized in that: it is made of the following raw materials in weight ratio: mixed reactant, dodecyl dimethyl tertiary amine, didodecyl methylamine, isopropanol, methyl chloride , alkali, and appropriate amount of deionized water.

[0066] Concrete, the preparation method of liquid cement grinding aid comprises the following steps:

[0067] (1) Feeding: Add isopropanol, deionized water, dodecyldimethyl tertiary amine, didodecylmethylamine successively in the reactor, then add catalyst base, and stir;

[0068] (2) Reaction: After replacing the air in the reactor, gradually increase the temperature, control the temperature at 80-85°C, feed in methyl chloride while stirring, and react for 6 hours under a pressure of 0.2-0.3MPA to obtain material W;

[0069] (3) Discharging: After the material W is cooled to normal pressure, add an appropriate amount of deionized water to dilute, discharge, and fill the finished product.

[0070] The mix...

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Abstract

The invention relates to the field of cement additives, in particular to a preparation method of a liquid cement grinding aid. The liquid cement grinding aid is prepared from the following raw materials by synthesis reaction: N,N-dimethyldodecylamine, didodecylmethylamine, isopropanol, methyl chloride, alkali and a proper amount of deionized water; the product of the synthesis reaction is as follows: a mixture of dodecyltrimethylammonium chloride, didodecyldimethylammonium chloride and water. According to the cement grinding aid prepared from the generated mixture, the specific surface area ofcement is improved, meanwhile, the fluidity and dispersity of materials in a mill are improved, the material viscosity is reduced, static electricity is quickly released, aggregation of particles iseliminated, combination of fracture surfaces is prevented, the gradation of the particles in the mill is changed, the activity of materials is excited, the grinding aid efficiency of the cement grinding aid is improved, and the production cost is reduced; the time scale of a cement grinding table is high, and the compressive strength of 3d and 28d is obviously enhanced; and in addition, the liquidcement grinding aid has a wide application range and can be used for cement mixed with different mixtures.

Description

technical field [0001] The invention relates to the field of cement admixtures, in particular to a preparation method of liquid cement grinding aids. Background technique [0002] Cement grinding aid is a kind of cement admixture that must be added in the cement grinding production process. The use of cement grinding aid can improve the grinding aid and enhance the efficiency in the cement grinding production process. [0003] At present, the main raw materials used in the production of cement grinding aids are: triethanolamine, triisopropanolamine, polyols, polycarboxylic acids, etc. [0004] A liquid cement grinding aid and a preparation method thereof are disclosed in a patent whose application number is CN201510659004.5 and whose publication date is December 16, 2015. The grinding aid is composed of trineopropanolamine hydrochloride solution, ethylene glycol, polycarboxylic acid, molasses and other raw materials. The preparation method is to weigh an appropriate amount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B28/14C04B103/52
Inventor 张天喜
Owner 溧阳市精卫新型材料有限公司
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