A kind of cross-linked wet-mixed mortar plastic-retaining agent and preparation method thereof

A technology of wet-mixed mortar and plastic-retaining agent, which is applied in the field of construction admixtures, can solve the problems of plastic-retaining agent water retention rate and long-term stability of compressive strength, etc., and achieve enhanced steric hindrance effect, stable performance and low cost Effect

Active Publication Date: 2022-04-22
KZJ NEW MATERIALS GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing wet-mix mortar additives use plastic retainers, but the existing plastic retainers are insufficient in terms of water retention, compressive strength and long-term stability

Method used

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  • A kind of cross-linked wet-mixed mortar plastic-retaining agent and preparation method thereof
  • A kind of cross-linked wet-mixed mortar plastic-retaining agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) The first esterification reaction: 50g of 2-amino-3-p-hydroxyphenylpropionic acid and 50g of prenyl alcohol are added to the reaction vessel, the temperature is raised to 80°C, and then 2g of aluminum sulfate octahydrate is added, After reacting for 3 hours, the excess prenol was removed by reflux to obtain prenyl 2-amino-3-p-hydroxyphenylpropionate.

[0033] (2) The second esterification reaction:

[0034] Add 100g of 3-hydroxyphenylphosphonopropionic 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 30°C, react for 2 hours, filter and distill at atmospheric pressure to get 3-hydroxyphenyl phosphatopropionate dihydromyrcenyl;

[0035] 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-hydroxyphenylphosphorylpr...

Embodiment 2

[0039] (1) The first esterification reaction: 50g of 2-amino-3-p-hydroxyphenylpropionic acid and 100g of propylene alcohol were added to the reaction vessel, the temperature was raised to 90°C, and then 2g of ferric ammonium sulfate dodecahydrate was added, After reacting for 3 hours, excess propenol was removed by reflux to obtain 2-amino-3-propenyl p-hydroxyphenylpropionate.

[0040] (2) The second esterification reaction:

[0041]Add 100g of 3-hydroxyphenylphosphonopropionic acid and cyclohexane into the reaction kettle, then add 200g of dihydromyrcenol, add p-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;

[0042] 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-hydroxypheny...

Embodiment 3

[0046] (1) The first esterification reaction: add 50g of 2-amino-3-p-hydroxyphenylpropionic acid and 150g of prenyl alcohol into the reaction vessel, raise the temperature to 70°C, and then add 3g of sodium bisulfate monohydrate , reacted for 4 hours, and refluxed to remove excess prenyl alcohol to obtain prenyl 2-amino-3-p-hydroxyphenylpropionate.

[0047] (2) The second esterification reaction:

[0048] 100g of 3-hydroxyphenylphosphorylpropionic acid and cyclohexane are added to the reaction kettle, then 250g of dihydromyrcenol is added, and p-732 cation exchange resin and hydroquinone are added simultaneously, stirred evenly, and then the temperature is raised to 60°C, react for 3 hours, filter and distill under normal pressure to get 3-hydroxyphenyl phosphatopropionate dihydromyrcenyl;

[0049] 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-hydroxyphenylphos...

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Abstract

The invention relates to the technical field of building admixtures, in particular to a cross-linked wet-mix mortar plasticizer and a preparation method thereof. The preparation comprises: adding polyether monomers and carboxyl-terminated vinyl ethers into a reaction kettle, adding acrylic acid, Adjust the pH value, and irradiate the material under ultraviolet light. After heating up, add hydrogen peroxide, then add acrylic acid, 2-amino-3-p-hydroxyphenylpropionate, 3-hydroxyphenylphosphine-propionate dihydrolauryl Enol ester, cross-linking agent, photoinitiator and chain transfer agent, and then drop reducing agent; after the reaction, adjust pH=7-8 to obtain the cross-linked wet-mixed mortar plastic-preserving agent. The preparation method adopts an initiation system combining a photoinitiator and a redox initiation system, which increases the reaction rate, has high conversion rate, has the advantages of fast reaction speed and low cost, and is easy to operate and easy for industrial production. The prepared wet-mixed mortar The performance of the plastic retaining agent is stable, it has a better plastic retaining effect, and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of building admixtures, in particular to a cross-linked wet-mixed mortar plastic retainer 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 susta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/06C08F230/02C08F222/14C08F218/12C04B24/26C04B103/30
CPCC08F283/065C04B24/246C04B2103/30C08F220/06C08F218/12C08F230/02
Inventor 麻秀星柯余良方云辉钟丽娜林添兴朱少宏桂苗苗张小芳
Owner KZJ NEW MATERIALS GROUP CO LTD
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