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Cross-linking type wet mixed mortar plasticizer and preparation method thereof

A wet-mixed mortar and plasticizer technology, which is applied in the field of building admixtures, can solve the problems of insufficient water retention rate and long-term stability of compressive strength of plasticizers, and achieves enhanced steric hindrance effect, high conversion rate, and wide application. Foreground effect

Active Publication Date: 2019-10-22
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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  • Cross-linking type wet mixed mortar plasticizer and preparation method thereof
  • Cross-linking type wet mixed mortar plasticizer 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, particularly to a cross-linking type wet mixed mortar plasticizer and a preparation method thereof. The preparation method comprises: adding a polyether monomer and a carboxy-terminated vinyl ether to a reaction kettle, adding acrylic acid, adjusting the pH value, irradiating the material under ultraviolet light, heating, addinghydrogen peroxide, adding acrylic acid, 2-amino-3-p-hydroxyphenyl propionate, 3-hydroxyphenylphosphoryl propionate dihydromyrcenol, a cross-linking agent, a photoinitiator and a chain transfer agent,adding a reducing agent in a dropwise manner, and adjusting the pH value to 7-8 after the reaction is finished so as to obtain the cross-linking type wet mixed mortar plasticizer. According to the present invention, the preparation method uses the photoinitiator and redox initiation system combined initiation system, has advantages of reaction rate improving, high conversion rate, rapid reaction,low cost, easy operation and easy industrial production, and the prepared wet mixed mortar plasticizer has characteristics of stable performance, good plastic preservation effect and wide applicationprospects.

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 Applications(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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