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Polyether composite cement grinding aid and preparation method thereof

A cement grinding aid and composite cement technology, applied in the field of grinding aids, can solve the problems of insufficient compressive and flexural strength, unstable quality of cement grinding aids, etc., and achieve the effect of improving the compressive capacity and increasing the strength of cement

Active Publication Date: 2017-08-18
FUJIAN FURUN BUILDING MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the problems of unstable quality and insufficient compressive and flexural strengths of the current cement grinding aids, the present invention provides a novel polyether composite cement grinding aid and its preparation method, which is suitable for cement or concrete in the 3rd and 28th days. Increased flexural and compressive strength

Method used

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  • Polyether composite cement grinding aid and preparation method thereof
  • Polyether composite cement grinding aid and preparation method thereof
  • Polyether composite cement grinding aid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of polyether compound cement grinding aid, is made up of the raw material of following parts by weight: polyethylene glycol ether, polyol, poloxamer, polyoxyethyl castor oil, water ratio is=15:10:1: 0.5:70.

[0030] Among them, the ratio of polyethylene glycol, sorbitol, triethanolamine, propylene glycol and isopropanol in the polyol is 1:1:1:1:1, and the molecular weight of polyethylene glycol is 4000.

[0031] The preparation method is:

[0032] 1) Mix polyethylene glycol ether with polyoxyethyl castor oil, add poloxamer to form a mixture, heat the mixture at a temperature of 60°C, and react chemically for 5 hours to produce compound I;

[0033] 2) Add polyhydric alcohol and water to compound I after step a and mix evenly to obtain a finished product.

Embodiment 2

[0035] A kind of polyether composite cement grinding aid, is made up of the raw material of following parts by weight: polyethylene glycol ether, polyol, poloxamer, polyoxyethyl castor oil, water ratio is=25:30:3: 1:90.

[0036] Among them, the ratio of polyethylene glycol, sorbitol, triethanolamine, propylene glycol and isopropanol in the polyol is 1:1:1:1:1, and the molecular weight of polyethylene glycol is 4000.

[0037] The preparation method is:

[0038] 1) Mix polyethylene glycol ether with polyoxyethyl castor oil, add poloxamer to form a mixture, heat the mixture at a temperature of 100° C., and react chemically for 5 hours to produce compound I;

[0039] 2) Add polyhydric alcohol and water to compound I after step a and mix evenly to obtain a finished product.

Embodiment 3

[0041] A kind of polyether composite cement grinding aid, is made up of the raw material of following parts by weight: polyethylene glycol ether, polyol, poloxamer, polyoxyethyl castor oil, water ratio is=18:20:2: 0.7:80.

[0042]Among them, the ratio of polyethylene glycol, sorbitol, triethanolamine, propylene glycol and isopropanol in the polyol is 1:1:1:1:1, and the molecular weight of polyethylene glycol is 4000.

[0043] The preparation method is:

[0044] 1) Mix polyethylene glycol ether with polyoxyethyl castor oil, add poloxamer to form a mixture, heat the mixture at a temperature of 80° C., and react chemically for 5 hours to produce compound I;

[0045] 2) Add polyhydric alcohol and water to compound I after step a and mix evenly to obtain a finished product.

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Abstract

The invention provides a polyether composite cement grinding aid and a preparation method thereof; the polyether composite cement grinding aid comprises, according to the formulation, polyglycol ether, polyols, poloxamer, ethoxylate castor oil, and water, wherein the polyols include polyethylene glycol, sorbitol, triethanolamine, propylene glycol and isopropyl alcohol. The polyether composite cement grinding aid has improved strength and compressive capacity for cement in 3 days and 28 days, so that cement strength is improved; cement has good property and is suitable for long-term storage; in addition, the polyether composite cement grinding aid is low in manufacture cost and low in energy consumption and meets the concept of 'energy saving and consumption reduction'.

Description

technical field [0001] The invention proposes a grinding aid for cement grinding, specifically a polyether composite cement grinding aid and a preparation method thereof. Background technique [0002] Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It can significantly increase the output of cement table, the strength of cement of all ages, and improve its fluidity. Cement grinding aids can greatly reduce the phenomenon of electrostatic adsorption and ball formation during the grinding process, and can reduce the tendency of re-agglomeration of ultrafine particles formed during the grinding process. Cement grinding aids can also significantly improve the fluidity of cement, improve the grinding effect of the mill and the powder selection efficiency of the powder separator, thereby reducing the energy consumption of grinding. Cement produced with grinding aids has a lower tendency to compact and agglomerate, which facil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B103/52
CPCC04B40/0039C04B2103/52C04B24/32C04B24/02C04B24/122C04B22/002C04B24/08
Inventor 温仁付
Owner FUJIAN FURUN BUILDING MATERIAL TECH
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