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A kind of polymer sulfonate, its preparation method and its application in cement grinding aid

A sulfonate and polymer technology, applied in the field of polymer sulfonate, can solve the problems of inability to guarantee the stability of component distribution and poor product stability, achieve clear molecular structure design, low production equipment requirements, Simple production process

Active Publication Date: 2016-06-08
山东天汇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthetic product described in this patent is a mixture of various small molecular substances, which cannot guarantee the stability of the distribution of each component, and the stability of the product is not good

Method used

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  • A kind of polymer sulfonate, its preparation method and its application in cement grinding aid
  • A kind of polymer sulfonate, its preparation method and its application in cement grinding aid
  • A kind of polymer sulfonate, its preparation method and its application in cement grinding aid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 300 kg of allyl polyethylene glycol with a molecular weight of 1000 into a reactor equipped with a condensation splitter device, add 350 kg of water, stir, and raise the temperature to 60°C. Weigh 15.8kg for SMAS, 51.75kg for AMPS, add 120kg of water to dissolve and make monomer solution. Weigh 29.4 kg of ammonium persulfate and add 125.4 kg of water to form an initiator solution; simultaneously add the monomer solution and the initiator solution dropwise, and the dropwise addition is completed in 4 hours. Insulate at 85°C for 2 hours, cool down, and cool to 45°C to obtain the product.

[0040] Small grinding experiment data:

[0041]

[0042] Note: 1. The clinker is provided by Tongling Conch: 3d compressive strength: 30MPa; 28d compressive strength: 62MPa;

[0043] 2. Small mill grinding is 30 minutes.

Embodiment 2

[0045] Add 270 kg of polyoxyethylene (oxypropylene) alcohol ether (EO number 12, PO number 7) with a molecular weight of 1000 into a reactor equipped with a condensation and splitter device, add 300 kg of water, stir, and raise the temperature to 65°C. Weigh 55.9kg of AMPS, add 120kg of water to dissolve and make a monomer solution. Weigh 13.03 kg of ammonium persulfate and add 88 kg of water to form an initiator solution; simultaneously add the monomer solution and the initiator solution dropwise, and the addition is completed in 4 hours. Insulate at 95°C for 2 hours, cool down, and cool to 45°C to obtain the product.

[0046] Small grinding experiment data:

[0047]

[0048] Note: 1. The clinker is provided by Tongling Conch, 3d compressive strength: 30MPa; 28d compressive strength: 62MPa;

[0049] 2. Small mill grinding is 30 minutes.

Embodiment 3

[0051]Add 270kg of polyoxyethylene (oxypropylene) alcohol ether with a molecular weight of 1000 (EO number 12, PO number 7) and SMAS42.7kg into a reactor equipped with a condensation and splitter device, add 315kg of water, stir, and heat up to 65°C . Weigh 31.3 kg of ammonium persulfate and add 200 kg of water to form an initiator solution; add the initiator solution dropwise, and the addition is completed in 4 hours. Insulate at 95°C for 2 hours, cool down, and cool to 45°C to obtain a product with a solid content of 40%.

[0052] Small grinding experiment data:

[0053]

[0054] Note: 1. The clinker is provided by Tongling Conch: 3d compressive strength: 30MPa; 28d compressive strength: 62MPa;

[0055] 2. Small mill grinding is 30 minutes.

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Abstract

The invention relates to polymer sulfonate as well as a preparation method and application thereof in a cement grinding aid. The structural formula of polymer sulfonate is shown in the specification, wherein a ranges from 0 to 10, b ranges from 1 to 10, c ranges from 0 to 10, m ranges from 10 to 50 and n ranges from 0 to 20, and m is more than n; a and c are natural numbers or zero but are not zero at the same time; n is a natural number of zero; and both b and m are natural numbers; and the polymer sulfonate is copolymerized of an allyl polyoxyethylene polyoxypropylene monomer, a 1-acrylanmido-2-methylpropanesulfonic acid (AMPS) monomer and / or a sodium methyl allyl sulfonate (SMAS) monomer. The cement grinding aid disclosed by the invention is low in mixing amount, highly enhanced and highly dispersed, and can realize organic combination of multiple functional groups to take a synergistic effect together. The polymer sulfonate has the advantages of relatively simple production process, easily controlled reaction conditions, high purity and relatively low requirement on production equipment.

Description

technical field [0001] The invention relates to a polymer sulfonate, its preparation method and its application in cement grinding aids. Background technique [0002] In the production of cement industry, in order to improve the grinding efficiency, reduce the power consumption of the mill, and improve the fineness and quality of cement, a small amount of process admixture must be added in the grinding process. The process admixture is composed of one or more surface-active substances and other chemical additives, which can reduce the surface energy of cement during the cement grinding process, overcome the attraction between materials, reduce the crushing resistance, and prevent ball paste Paste milling improves the fluidity of the grinding, thereby reducing the energy consumption of the mill and improving the grinding efficiency. The use of process admixtures in foreign grinding operations has a history of more than 50 years. Since Goddard first obtained a patent for res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/58C08F228/02C04B24/16C04B103/52
Inventor 尹方勇周俊华徐正华王峰魏岱慈朱文沛
Owner 山东天汇科技有限公司
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