Slow-release cationic anti-mud polycarboxylic-type high performance water reducer and preparation method thereof

A cationic, clay-polycarboxylic acid technology, applied in the field of concrete admixture, can solve the problems of no mud-resistant functional group, difficult mud-resistant effect, cumbersome process, etc., achieve good slow-release effect, improve work performance, and simple preparation process Effect

Active Publication Date: 2016-05-04
GUANGDONG FUTE NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are also reports related to mud-resistant polycarboxylic acid in China. For example, Chinese patent CN103467670A proposes a preparation method of mud-resistant polycarboxylic acid. , and then synthesize polycarboxylic acid with alcohol ether, the preparation process requires high temperature and reduced pressure, the process is cumbersome and the cost is high; CN104479084A proposes

Method used

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  • Slow-release cationic anti-mud polycarboxylic-type high performance water reducer and preparation method thereof
  • Slow-release cationic anti-mud polycarboxylic-type high performance water reducer and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0029] Example 1

[0030] The slow-release cationic anti-sludge polycarboxylic acid-based high-performance water reducing agent is prepared according to the following raw material amounts and processes, specifically:

[0031] The first step is to prepare materials: 0.49g of hanging white block and 280g of water are fully stirred to prepare solution A; 9g of acrylic acid, 25.38g of hydroxyethyl acrylate, 7.5g of polyethylene glycol maleic acid diester, and dimethyldiallyl chloride 5.05 g of ammonium hydroxide, 0.46 g of mercaptopropionic acid and 277 g of water were fully stirred to prepare solution B.

[0032] The second step of polymerization: Add 150g of methabutene alcohol polyoxyethylene ether and 250g of water into a glass reactor equipped with a thermometer and an electric stirrer, stir until all is dissolved, add 30% hydrogen peroxide 0.89g, stir evenly, start The temperature is controlled between 20~30℃ and start to add materials A and B; material A is added dropwise for 2.5...

Example Embodiment

[0033] Example 2

[0034] The slow-release cationic anti-sludge polycarboxylic acid-based high-performance water reducing agent is prepared according to the following raw material amounts and processes, specifically:

[0035] The first step is to prepare materials: 0.75g of L-ascorbic acid and 156g of water are fully stirred to prepare solution A; maleic anhydride 12.25g, hydroxyethyl acrylate 29g, polyethylene glycol maleic acid diester 12.5g, dimethyldiallyl 10.10 g of ammonium chloride, 0.66 g of mercaptopropionic acid and 156 g of water were fully stirred to prepare solution B.

[0036] The second step of polymerization: Into a glass reactor equipped with a thermometer and an electric stirrer, add 75 g of isobutene alcohol polyoxyethylene ether, 75 g of isoprene alcohol polyoxyethylene ether and 200 g of water, stir until all is dissolved, and add 30% of the excess water. Hydrogen oxide 1.07g, stir evenly, the initial temperature is controlled between 20~30℃, start to add A and ...

Example Embodiment

[0037] Example 3

[0038] The slow-release cationic anti-sludge polycarboxylic acid-based high-performance water reducing agent is prepared according to the following raw material amounts and processes, specifically:

[0039] The first step is to prepare materials: 1.06g of hanging white block and 105g of water are fully stirred to prepare solution A; fumaric acid 14.5g, hydroxyethyl acrylate 18.13g, hydroxypropyl acrylate 20.31g, polyethylene glycol maleic acid diester 17.5 g, 15.16 g of dimethyl diallyl ammonium chloride, 0.99 g of mercaptopropionic acid and 108 g of water are fully stirred to prepare solution B.

[0040] The second step of polymerization: Add 150 g of methabutene alcohol polyoxyethylene ether and 150 g of water into a glass reactor equipped with a thermometer and an electric stirrer, stir until all are dissolved, add 1.42 g of sodium persulfate, stir evenly, and control the starting temperature at Start to add A and B materials dropwise between 20~30℃; add materi...

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Abstract

The present invention discloses slow-release cationic anti-mud polycarboxylic-type high performance water reducer and a preparation method thereof. The slow-release cationic anti-mud polycarboxylic-type high performance water reducer is successfully synthesized from an unsaturated carboxylic acid, a polyether macromonomer, a cationic unsaturated monomer, an unsaturated esters, a crosslinking agent, a chain transfer agent, an oxidizing agent and a reducing agent as raw materials at room temperature without heat source. By introduction of the long-chain-ester crosslinking agent and the cationic unsaturated monomer, the slow-release cationic anti-mud polycarboxylic-type high performance water reducer has good slow-release and anti-mud effects, is low in admixing volume, high in water-reducing rate, excellent in slump retention ability, and not sensitive to mud contained in sand and stones, and the process does not require an additional heat source, an be carried out at room temperature, and is low in investment, low in cost, and suitable for large scale promotion and application.

Description

Technical field: [0001] The invention belongs to the field of concrete admixtures, and relates to a slow-release cationic mud-resistant polycarboxylic acid series high-performance water reducer with high water-reducing rate, good slow-release performance, and capable of suppressing adverse effects of soil on concrete and a preparation method thereof . Background technique [0002] As the third generation of high-performance concrete water reducer, polycarboxylate admixture has the advantages of low dosage, high water reducing rate, good slump performance, strong molecular structure adjustability, and clean production process. The key to the quality of concrete engineering has become an essential material and core technology for the manufacture of high-performance modern concrete. With the rapid development of the concrete industry, a large amount of natural sand and gravel has been exhausted, and due to various material conditions, the sand and gravel resources in various p...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/28C08F220/06C08F226/02C08F222/06C08F222/02C04B24/26C04B103/30
CPCC04B24/2694C04B2103/302C08F283/06C08F220/281
Inventor 张炜林震黎锦霞梁晓彤
Owner GUANGDONG FUTE NEW MATERIALS TECH CO LTD
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