Water-based water-reduction type mortar tackifier, as well as preparation method and application thereof

A water-reducing and tackifier technology, applied in the field of building materials, can solve problems such as failure to improve the mortar production process, and achieve the effect of improving water-reducing effect, reducing production labor, and facilitating large-scale production.

Active Publication Date: 2013-04-03
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that existing mortar tackifiers cannot improve the production process of mortar, and there are disadvantages and defects in price, performance, etc., the primary purpose of the present invention is to provide a water-based water-reducing mort

Method used

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  • Water-based water-reduction type mortar tackifier, as well as preparation method and application thereof
  • Water-based water-reduction type mortar tackifier, as well as preparation method and application thereof
  • Water-based water-reduction type mortar tackifier, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Put 26.9g of industrial naphthalene (95wt%) into the reaction kettle and heat up to 130°C to melt. After the naphthalene is melted, heat up to 150°C, and add 24g of concentrated sulfuric acid with a mass percentage of 98% for 0.5 hours. After the dropwise addition, keep the temperature for 3 hours, lower the temperature to 90°C, add 9.12g of polyethylene glycol benzoate and 16.2g of formaldehyde solution with a mass percentage of 37%, keep the temperature for 1.5 hours, cool to 40°C, and use the mass percentage Adjust the pH of the 30% NaOH solution to 7 to obtain a modified naphthalene-based water reducer.

[0034] (2) Mix 10g of the modified naphthalene-based water reducer in step (1), 36g of acrylic acid emulsion (effective solid content: 60wt%), 0.2g of carboxymethyl starch, 0.5g of water-based defoamer and 53.3g of water, and stir Evenly, the water-based water-reducing mortar viscosifier can be obtained.

Embodiment 2

[0036] (1) Put 26.9g of industrial naphthalene (95wt%) into the reactor and heat up to 130°C to melt. After the naphthalene is melted, heat up to 150°C, and add 36g of concentrated sulfuric acid with a mass percentage of 98% for 0.5 hours. , after the dropwise addition, keep the reaction for 2.5 hours, cool down to 100°C, add 18.2g of polyethylene glycol benzoate and 21.6g of formaldehyde solution with a mass percentage of 37%, keep the heat for 1.0 hours, cool down to 50°C, and use the mass percentage Adjust the pH of the 20% NaOH solution to 7.5 to obtain a modified naphthalene-based water reducer.

[0037] (2) Mix 13g of the modified naphthalene-based water reducer in step (1), 50g of acrylic acid emulsion (effective solid content: 40wt%), 0.3g of hydroxyethyl starch, 1.0g of water-based defoamer and 35.7g of water, and stir Evenly, the water-based water-reducing mortar viscosifier can be obtained.

Embodiment 3

[0039] (1) Put 26.9g of industrial naphthalene (95wt%) into the reaction kettle and heat up to 140°C to melt. After the naphthalene is melted, heat up to 150°C, and add 35g of concentrated sulfuric acid with a mass percentage of 98% for 0.8 hours. , after the dropwise addition, keep the temperature for 2.0 hours, cool down to 95°C, add 10g of polyethylene glycol benzoate and 16g of formaldehyde solution with a mass percentage of 37%, keep the heat for 1.5 hours, cool down to 45°C, and use a mass percentage of 40% % NaOH solution to adjust the pH to 8 to obtain a modified naphthalene-based water reducer.

[0040] (2) Mix 16g of the modified naphthalene-based water reducer in step (1), 30g of acrylic acid emulsion (effective solid content: 50wt%), 0.1g of hydroxypropyl starch, 1.5g of water-based defoamer and 52.4g of water, and stir Evenly, the water-based water-reducing mortar viscosifier can be obtained.

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Abstract

The invention discloses a water-based water-reduction type mortar tackifier and a preparation method as well as an application thereof. The preparation raw material of the water-based water-reduction type mortar tackifier comprises the following components in percentage by weight: 10-20% of modified naphthalene water reducer, 30-50% of acrylate emulsion, 0.1-1.0% of modified starch, 0.5-5.0% of de-foaming agent and 31-53.3% of water. The modified naphthalene water reducer is obtained by reacting naphthalene with sulfuric acid, adding benzoic acid polyethylene glycol ester and formaldehyde, reacting, finally adjusting pH (potential of hydrogen) to be 7-8 by using NaOH. The water-based water-reduction type mortar tackifier is obtained by mixing the components according to the above mass percentage and then stirring uniformly. By adding the modified naphthalene water reducer and the acrylate emulsion in the water-based water-reduction type mortar tackifier provided by the invention, the amount of the water used when mixing mortar is liable to be reduced, the workability of the mortar is improved, the initial binding power of the mortar to walls, tiles and the like, as well as the later solidifying strength are enhanced.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a water-based water-reducing mortar viscosifier and a preparation method and application thereof. Background technique [0002] my country is in a period of rapid development of civil engineering, and a large number of civil engineering projects are under construction every year, and the original civil engineering projects need to be repaired or renewed due to environmental effects and natural disasters. Mortar is used in the construction, restoration or renewal of civil engineering works. [0003] In construction projects, mortar is often used for wall masonry and for interior and exterior plastering. Therefore, mortar needs to have better bonding performance, and people often add rubber powder, "mortar king" and so on to improve its workability and bonding performance. However, the traditional rubber powder, "mortar king" and other tackifiers are solid. In the process of morta...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B28/00C04B103/44
Inventor 胡文光吴昆吕满庚黄晓梅
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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