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Mud-resistant polycarboxylate superplasticizer as well as preparation method and application thereof

A technology of polycarboxylic acid and water reducing agent, applied in the field of concrete, can solve the problems of affecting application, adsorption of polycarboxylate water reducing agent, etc., and achieve the effects of improving cost performance, excellent water reducing performance, and reducing surface tension

Inactive Publication Date: 2019-07-12
兰州同邦建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a mud-resistant polycarboxylate superplasticizer and its preparation method and application, which solves the problem in the prior art that the polycarboxylate superplasticizer is absorbed by soil in large quantities and affects its application

Method used

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  • Mud-resistant polycarboxylate superplasticizer as well as preparation method and application thereof
  • Mud-resistant polycarboxylate superplasticizer as well as preparation method and application thereof
  • Mud-resistant polycarboxylate superplasticizer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A mud-resistant polycarboxylate superplasticizer, consisting of the following components by weight:

[0032] 350 parts of isopentenol polyoxyethylene ether, 40 parts of acrylic acid, 18 parts of hydroxyethyl acrylate, 6 parts of ammonium persulfate, 1 part of thioglycolic acid, 4 parts of acrylamide, 10 parts of sodium tripolyphosphate,

[0033] Its preparation method comprises the following steps:

[0034] S1, material preparation: according to the above formula, weigh each component for subsequent use;

[0035] S2. Prepare materials A and B: dissolve thioglycolic acid in 150 parts of water to obtain material A, dissolve acrylic acid and hydroxyethyl acrylate in 6.3 parts of water to obtain material B, and set aside;

[0036] S3. Dissolving: adding prenol polyoxyethylene ether, ammonium persulfate, and acrylamide into water in sequence, heating to 60° C. to dissolve, and obtaining a mixed material;

[0037] S4, dropwise adding material A and material B: add material ...

Embodiment 2

[0041] A mud-resistant polycarboxylate superplasticizer, consisting of the following components by weight:

[0042] 450 parts of isopentenol polyoxyethylene ether, 70 parts of acrylic acid, 36 parts of hydroxyethyl acrylate, 16 parts of hydroquinone, 5 parts of thioglycolic acid, 15 parts of cetyltrimethylammonium bromide, 50 parts of citric acid share,

[0043] Its preparation method comprises the following steps:

[0044] S1, material preparation: according to the above formula, weigh each component for subsequent use;

[0045] S2. Prepare materials A and B: dissolve thioglycolic acid in 750 parts of water to obtain material A, dissolve acrylic acid and hydroxyethyl acrylate in 12.6 parts of water to obtain material B, and set aside;

[0046] S3. Dissolving: add prenol polyoxyethylene ether, hydroquinone, and cetyltrimethylammonium bromide into water in sequence, and heat to 70° C. to dissolve to obtain a mixed material;

[0047] S4, dropwise adding material A and materia...

Embodiment 3

[0051] A mud-resistant polycarboxylate superplasticizer, consisting of the following components by weight:

[0052] 370 parts of isopentenol polyoxyethylene ether, 46 parts of acrylic acid, 21 parts of hydroxyethyl acrylate, 5 parts of ammonium persulfate, 3 parts of hydroquinone, 2 parts of thioglycolic acid, 4 parts of acrylamide, cetyl tris 2 parts of methyl ammonium bromide, 9 parts of sodium tripolyphosphate, 9 parts of citric acid,

[0053] Its preparation method comprises the following steps:

[0054] S1, material preparation: according to the above formula, weigh each component for subsequent use;

[0055] S2. Prepare materials A and B: dissolve thioglycolic acid in 300 parts of water to obtain material A, dissolve acrylic acid and hydroxyethyl acrylate in 7.35 parts of water to obtain material B, and set aside;

[0056] S3. Dissolving: add prenol polyoxyethylene ether, ammonium persulfate, acrylamide, cetyltrimethylammonium bromide, and hydroquinone into water in sequ...

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Abstract

The invention belongs to the technical field of concrete and proposes a mud-resistant polycarboxylate superplasticizer. The mud-resistant polycarboxylate superplasticizer is prepared from components in parts by weight as follows: 350-450 parts of isoamyl alcohol polyoxyethylene ether, 40-70 parts of acrylic acid, 18-36 parts of hydroxyethyl acrylate, 6-16 parts of an initiator, 1-5 parts of a chain transfer agent, 4-15 parts of a cationic monomer and 10-50 parts of a coagulation adjusting component. The preparation method of the mud-resistant polycarboxylate superplasticizer comprises steps asfollows: material preparation, preparation of materials A and B, dissolution, droplet adding of the materials A and B, thermal insulation ageing, neutralization and the like. The mud-resistant polycarboxylate superplasticizer is applied to preparation of concrete. With the adoption of the technical scheme, the problem that application of the polycarboxylate superplasticizer is affected due to massive adsorption by mud in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of concrete, and relates to a mud-resistant polycarboxylate water reducer and its preparation method and application. Background technique [0002] With the continuous deepening of the progress of high-performance concrete and the stricter control of harmful ions such as chloride ion content and total alkali content in concrete, polycarboxylate-based water reducers have become the best choice for preparing high-performance concrete, and have received a lot of attention. Promotional use. Although the excellent water-reducing performance and good slump retention ability of polyacid-based superplasticizers have been widely recognized by the industry, more and more urban coagulation and mixing stations are gradually using polycarboxylate-based superplasticizers. However, due to the limitation of material conditions, the sand and gravel resources in various places are gradually deteriorating, especially in large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C08F283/06C08F220/06C08F220/20C08F220/56C08F220/54C08F2/38C04B103/30
CPCC04B24/2694C08F283/065C08F2/38C04B2103/302C08F220/06C08F220/20C08F220/56C08F220/54
Inventor 房小向侯孟孟班增杰房坛李计元
Owner 兰州同邦建材有限公司
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