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A kind of plastic stabilizer for wet-mixed mortar and preparation method thereof

A technology of wet-mixed mortar and plastic stabilizer, which is applied in the field of construction admixtures, can solve the problem of insufficient plasticity of the plastic stabilizer, and achieve the effects of enhanced steric hindrance, increased adsorption, and increased dispersibility

Active Publication Date: 2020-07-31
KZJ NEW MATERIALS GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the existing wet-mix mortar additives, the plastic stabilizer is undoubtedly very critical. As a supporting additive for masonry, plastering, bottom surface, anti-cracking and waterproof mortar produced for concrete mixing plants, it can realize wet-mix mortar The role of maintaining plasticity for a long time is particularly important, but the existing plastic stabilizers have the problem of not maintaining plasticity for a long time

Method used

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  • A kind of plastic stabilizer for wet-mixed mortar and preparation method thereof
  • A kind of plastic stabilizer for wet-mixed mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) The first esterification reaction:

[0031] Add 50g of 2-amino-3-p-hydroxyphenylpropionic acid and 50g of propylene alcohol into the reaction vessel, raise the temperature to 80°C, then add 2g of ferric ammonium sulfate dodecahydrate, react for 3 hours, reflux the excess propylene Removal of the alcohol yields 2-amino-3-propenyl p-hydroxyphenylpropionate.

[0032] (2) The second esterification reaction:

[0033] Add 100g of 3-hydroxyphenylphosphorylpropionic acid and cyclohexane into the reaction kettle, then add 100g of dihydromyrcenol, add p-732 cation exchange resin and hydroquinone at the same time, stir evenly, and then raise the temperature to to 30°C, react for 2 hours, filter and distill under atmospheric pressure to obtain 3-hydroxyphenyl phosphine propionate dihydromyrcenyl;

[0034] Wherein, the dosage of 732 cation exchange resin is 0.5% of the mass of 3-hydroxyphenylphosphorylpropionic acid, the dosage of hydroquinone is 0.5% of the mass of 3-hydroxyp...

Embodiment 2

[0039] (1) The first esterification reaction:

[0040] Add 50g of 2-amino-3-p-hydroxyphenylpropionic acid and 100g of butenyl alcohol into the reaction vessel, raise the temperature to 90°C, then add 1g of sodium bisulfate monohydrate, react for 4 hours, reflux to remove the excess butanol Removal of the enol yields butenyl 2-amino-3-p-hydroxyphenylpropionate.

[0041] (2) The second esterification reaction:

[0042] Add 100g of 3-hydroxyphenylphosphonopropionic acid and cyclohexane into the reactor, then add 200g of dihydromyrcenol, add 732 cation exchange resin and hydroquinone at the same time, stir evenly, and then raise the temperature to 50°C, react for 3 hours, filter and distill at atmospheric pressure to get 3-hydroxyphenyl phosphatopropionate dihydromyrcenyl;

[0043] Wherein, the dosage of 732 cation exchange resin is 1% of the mass of 3-hydroxyphenylphosphorylpropionic acid, the dosage of hydroquinone is 0.5% of the mass of 3-hydroxyphenylphosphorylpropionic acid...

Embodiment 3

[0048] (1) The first esterification reaction:

[0049] Add 50g of 2-amino-3-p-hydroxyphenylpropionic acid and 150g of unsaturated alcohol into the reaction vessel, raise the temperature to 80-90°C, then add 1-3 parts by weight of catalyst, react for 2 to 5 hours, and reflux The excess prenol is removed to give 2-amino-3-p-hydroxyphenylpropionate.

[0050] (2) The second esterification reaction:

[0051] Add 100g of 3-hydroxyphenylphosphonopropionic acid and cyclohexane into the reactor, then add 250g of dihydromyrcenol, add 732 cation exchange resin and hydroquinone at the same time, stir evenly, and then raise the temperature to 60°C, react for 3 hours, filter and distill under normal pressure to get 3-hydroxyphenyl phosphatopropionate dihydromyrcenyl;

[0052] Wherein, the dosage of 732 cation exchange resin is 1.5% of the mass of 3-hydroxyphenylphosphorylpropionic acid, the dosage of hydroquinone is 1% of the mass of 3-hydroxyphenylphosphorylpropionic acid, and the atmosp...

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Abstract

The invention relates to the technical field of building admixtures, in particular to a wet-mixed mortar plastic stabilizer and a preparation method thereof. The preparation method comprises the following steps: mixing 4-hydroxybutyl vinyl polyoxyethylene ether monomer, acrylic acid, methyl After mixing acryloyloxyethyl succinic acid monoester and water, add hydrogen peroxide; after the reaction, add the aqueous solution of the reducing agent, the aqueous solution of the cocatalyst and the acrylic acid, 2-amino-3-p-hydroxyphenyl propionate, 3- An aqueous solution composed of dihydromyrcenyl hydroxyphenyl phosphopropionate and a chain transfer agent; after the reaction, polyvinyl alcohol is added, and the pH is adjusted to 7-8 to obtain the plastic stabilizer for wet-mixed mortar. Compared with the prior art, the mortar synthesized by the wet-mixed mortar plastic stabilizer provided by the present invention has the advantages of low consistency loss, good water retention, high compressive strength and long-term stability of the mortar, and has significant progress .

Description

technical field [0001] The invention relates to the technical field of building admixtures, in particular to a plastic stabilizer for wet-mixed mortar and a preparation method thereof. Background technique [0002] With the acceleration of the development of new urbanization in China, the number of urban municipal infrastructure and residential buildings will increase significantly, and building energy consumption has already accounted for a considerable part of the overall energy consumption. As a bulk building material second only to wall materials and concrete, building mortar is used in hundreds of millions of tons every year. Wet-mixed mortar will gradually replace the traditional on-site preparation mortar with its advantages of stable quality, energy saving and environmental protection, and centralized clean production; wet-mixed mortar is an inevitable result of industry development with its characteristics of energy saving, environmental protection, and sustainabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/32
CPCC04B40/0039C04B24/12C04B24/003C04B22/142C04B24/02C04B24/32C04B24/04C04B24/045C04B22/068C04B24/129C04B24/2623C04B22/062C04B2103/404C04B24/16C04B22/147C04B24/121
Inventor 柯余良方云辉张小芳钟丽娜朱少宏郭元强林添兴
Owner KZJ NEW MATERIALS GROUP CO LTD
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