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Anti-cracking and anti-hollowing dry-mixed mortar additive, and dry-mixed mortar containing additive

A dry-mixed mortar and additive technology, which is applied in the field of building materials, can solve the problems of affecting the service life of the wall surface, cannot be protected, and the adhesion of dry-mixed mortar is low, so as to prevent building cracks, prevent wall cracks, Reduce the effect of quality control links

Inactive Publication Date: 2020-02-11
HUNAN CHENLI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned additives have the following problems when preparing dry-mixed mortar: the prepared dry-mixed mortar has low adhesion, and when used on the wall of a building, it is easy to produce cracks and fall off, and it cannot protect rainwater and ultraviolet rays, affecting Lifespan of the wall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A dry-mixed mortar additive for anti-cracking and hollowing, characterized in that it comprises the following components in parts by weight: 5 parts of amphoteric ionic liquid modified dehydroabietamine, polyethylene glycol diacrylate / triethoxy 2 parts of silyl propyl maleic acid / N,N'-methylenebisacrylamide copolymer, 1 part of humic acid, 10 parts of pumice powder, 8 parts of sapphire, 3 parts of shell powder, 10 parts of palygorskite powder , 5 parts of pearl stone powder, 2 parts of tea polysaccharide, 0.5 part of choline alfoscerate.

[0032] The preparation method of described amphoteric ionic liquid modified dehydroabietamine, comprises the steps:

[0033] Step S1. Add 23g of N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid and 10g of epichlorohydrin into 100g of dichloromethane, stir and react at 30°C for 3 hours, then spin evaporate Remove the solvent, wash with ether for 3 times, and remove the ether by rotary evaporation to obtain the zwitterionic liquid;

...

Embodiment 2

[0038] A dry-mixed mortar additive for anti-cracking and hollowing, characterized in that it comprises the following components in parts by weight: 6 parts of amphoteric ionic liquid modified dehydroabietamine, polyethylene glycol diacrylate / triethoxy 3 parts of silylpropylmaleic acid / N,N'-methylenebisacrylamide copolymer, 1.5 parts of humic acid, 12 parts of pumice powder, 9 parts of sapphire, 4 parts of shell powder, 12 parts of palygorskite powder , 6 parts of pearl stone powder, 3 parts of ginkgo leaf polysaccharide, 0.7 part of choline alfoscerate.

[0039] The preparation method of described amphoteric ionic liquid modified dehydroabietamine, comprises the steps:

[0040] Step S1. Add 23g of N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid and 10g of epichlorohydrin into 120g of tetrahydrofuran, stir and react at 33°C for 3.5 hours, and then remove the solvent by rotary evaporation , washed 4 times with diethyl ether, and the diethyl ether was removed by rotary evapor...

Embodiment 3

[0045] A dry-mixed mortar additive for anti-cracking and hollowing, characterized in that it comprises the following components by weight: 8 parts of amphoteric ionic liquid modified dehydroabietamine, polyethylene glycol diacrylate / triethoxy 3.5 parts of silylpropylmaleic acid / N,N'-methylenebisacrylamide copolymer, 2 parts of humic acid, 15 parts of pumice powder, 10 parts of sapphire, 5 parts of shell powder, 15 parts of palygorskite powder , 7 parts of pearl stone powder, 3.5 parts of sugarcane polysaccharide, 1 part of choline alfoscerate.

[0046] The preparation method of described amphoteric ionic liquid modified dehydroabietamine, comprises the steps:

[0047] Step S1. Add 23g of N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid and 10g of epichlorohydrin into 150g of acetone, stir and react at 35°C for 4 hours, and then remove the solvent by rotary evaporation , washed 4 times with diethyl ether, and the diethyl ether was removed by rotary evaporation to obtain zwit...

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Abstract

The invention discloses an anti-cracking and anti-hollowing dry-mixed mortar additive. The anti-cracking and anti-hollowing dry-mixed mortar additive comprises, by weight, 5-10 parts of zwitterionic liquid modified dehydroabietylamine, 2-5 parts of polyethylene glycol diacrylate / triethoxysilyl propylmaleic acid / N,N'-methylene bisacrylamide copolymer, 1-3 parts of humic acid, 10-20 parts of pumicepowder, 8-12 parts of zircon sands, 3-8 parts of seashell powder, 10-20 parts of palygorskite powder, 5-10 parts of pearl stone powder, 2-5 parts of plant polysaccharides and 0.5-1.5 parts of cholineglycerophosphate. The invention also discloses a preparation method of the dry-mixed mortar additive. The dry-mixed mortar additive has the advantages of good performance stability, small mixing amount, effectiveness in improvement of the water retention rate and cohesiveness of mortars, improvement of the strength of the mortar and the cohesiveness and synergistic deformation performances of themortar and a base layer, effectiveness in prevention of cracking and hollowing of wall surfaces, and high economic, social, promoting and applying values.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a dry-mixed mortar additive for preventing cracking and hollowing and a dry-mixed mortar containing the additive. Background technique [0002] In recent years, with the rapid development of the economy and the advancement of urban-rural integration, various high-rise buildings have sprung up like mushrooms and become a symbol of modern civilization. Behind these large-scale construction projects, the use of construction mortar is inseparable. Construction mortar is an indispensable main material in construction engineering, including dry-mix mortar and wet-mix mortar. Among them, dry-mixed mortar is a kind of mortar that is widely used at present. It refers to a granular or powdery physical mixture of dry-screened aggregates, inorganic cementitious materials and additives in a certain proportion. The materials are transported to the construction site in bags or in bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42
CPCC04B40/0039C04B24/42C04B24/24C04B35/565C04B24/34C04B14/02C04B14/046C04B14/28C04B14/102C04B14/18C04B24/38C04B24/003
Inventor 朱佳媚程业秀
Owner HUNAN CHENLI NEW MATERIAL CO LTD
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