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Self-healing inorganic nano waterproof liquid and preparation method thereof

An inorganic nano- and nano-silica technology, applied in the field of waterproof liquid preparation, can solve the problems of impermeability, resistance to chloride ion erosion, rapid setting of silicate, etc., and achieve superior hydrophobic performance and super self-healing ability. , Good alkali resistance effect

Active Publication Date: 2021-10-08
中化学中科环境科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chloride salts have the problem of corroding metals, stearic acids have the problem of water immersion loss and reduce the strength, organic silicon has the problem of alkali resistance, and silicate has the problem of rapid setting and false setting caused by too fast hardening
Therefore, it is difficult to achieve the effects of anti-seepage, acid and alkali resistance, sulfate resistance and chloride ion erosion resistance with a single waterproofing agent.

Method used

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  • Self-healing inorganic nano waterproof liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Sodium silicate: 20 parts, 30 parts of nano-silica emulsion, 2 parts of lithium magnesium silicate, 8 parts of silane coupling agent, 0.02 part of surfactant, 5 parts of mica powder, 0.3 part of regulator, 0.3 part of coagulation accelerator , 0.5 part of metal ion chelating agent, 0.2 part of antifreeze, 100 parts of deionized water.

[0023] Specifically, the preparation steps of the waterproof liquid are:

[0024] (1) Put 20 parts of deionized water into the high-speed mixer, add 5 parts of mica powder, 0.3 parts of regulator, 0.3 parts of coagulant, 0.5 parts of metal ion chelating agent, 0.2 parts of antifreeze, mix and stir evenly to form a mixed solution a.

[0025] (2) Add 80 parts of deionized water to the reaction kettle, then add 30 parts of nano-silica emulsion, heat to 50-60°C, add 0.02 parts of surfactant, 8 parts of silane coupling agent, and 20 parts of silicic acid in sequence Sodium, 2 parts of magnesium lithium silicate until completely dissolved, c...

Embodiment 2

[0028] Sodium silicate: 20 parts, 20 parts of nano-silica emulsion, 1 part of lithium magnesium silicate, 8 parts of silane coupling agent, 0.02 part of surfactant, 5 parts of mica powder, 0.3 part of regulator, 0.3 part of coagulation accelerator , 0.5 part of metal ion chelating agent, 0.2 part of antifreeze, 100 parts of deionized water.

[0029] Specifically, the preparation steps of the waterproof liquid are:

[0030] (1) Add 20 parts of deionized water into the high-speed mixer, and sequentially add 5 parts of mica powder, 0.3 parts of regulator, 0.3 parts of coagulant, 0.5 parts of metal ion chelating agent, 0.2 parts of antifreeze, mix and stir evenly to form Mixture a;

[0031] (2) Then add 80 parts of deionized water to the reactor, add 20 parts of nano-silica emulsion, heat to 50-60°C, add 0.02 parts of surfactant, 8 parts of silane coupling agent, and 20 parts of sodium silicate in sequence 1 part of lithium magnesium silicate until completely dissolved, cooled a...

Embodiment 3

[0034] Sodium silicate: 30 parts, 20 parts of nano-silica emulsion, 2 parts of lithium magnesium silicate, 10 parts of silane coupling agent, 0.2 part of surfactant, 5 parts of mica powder, 0.3 part of regulator, 0.3 part of coagulation accelerator , 5 parts of metal ion chelating agent, 2 parts of antifreeze, 100 parts of deionized water.

[0035] Specifically, the preparation steps of the waterproof liquid are:

[0036] (1) Put 20 parts of deionized water into the high-speed mixer, add 5 parts of mica powder, 0.3 parts of regulator, 0.3 parts of coagulation accelerator, 5 parts of metal ion chelating agent, and 2 parts of antifreeze in turn, mix and stir evenly to form a mixed liquid a.

[0037] (2) Add 80 parts of deionized water to the reaction kettle, add 20 parts of nano-silica emulsion, heat to 50-60°C, add 0.2 parts of surfactant, 10 parts of silane coupling agent, and 30 parts of sodium silicate in sequence 2 parts of lithium magnesium silicate were completely disso...

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Abstract

The invention provides a self-healing type inorganic nano waterproof liquid which is prepared from the following components: sodium silicate, nano silicon dioxide emulsion, magnesium lithium silicate, a silane coupling agent, a surfactant, mica powder, a regulator, a coagulant, a metal ion chelating agent, an anti-freezing agent and deionized water. According to the invention, corrosion of water seepage, sunlight, acid rain, deicing salt and seawater to a base material can be effectively prevented, and corrosion, loosening, stripping and mildew of concrete and internal steel bar structures are prevented.

Description

technical field [0001] The invention belongs to the field of waterproofing liquid preparation, in particular to a self-healing inorganic nano-waterproofing liquid and a preparation method thereof. Background technique [0002] The reason why concrete leaks is because it contains a large number of pores and micro-cracks inside, forming water seepage channels. To prevent concrete water seepage, it is necessary to block or cut off the capillary channels to increase the water repellency of concrete. It is common practice to generate air bubbles to cut these channels . [0003] Improving impermeability is the main strategy for waterproofing. The main waterproofing agents include chlorine salts, stearates, silicates, and silicone-based waterproofing agents. Chloride salts have the problem of corroding metal, stearic acid has the problem of water soaking loss and lower strength, organic silicon has the problem of alkali resistance, and silicate has the problem of rapid setting and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/65
CPCC04B40/0039C04B2103/65C04B12/04C04B22/00C04B14/062C04B14/20C04B24/122C04B24/38C04B22/10C04B22/08C04B2103/0068C04B2103/40
Inventor 孙俊荣王伟志冯亚凯蒋玉广张海萍马立娟
Owner 中化学中科环境科技(北京)有限公司
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