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Environment-friendly water-based nano coating material used for concrete protection, and preparation method thereof

A concrete, environmentally friendly technology, used in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of long reaction time, decline in the performance of emulsions, lower production efficiency, etc., to improve concrete protection Effect, durability improvement, good protection effect

Active Publication Date: 2013-09-04
江苏道成不锈钢管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 102186893 discloses a concrete treatment agent containing fluorine and silicon, which improves the hydrophilicity of concrete due to the porous structure, and improves the oil repellency and stain resistance, but the preparation process of the fluorine-containing polymer is complicated and the cost is high. Not conducive to application
Patent CN 200510034381.6 introduces a silicone waterproofing agent and its preparation method. The polymerization reaction time is 15-22 hours, the reaction time is too long, and sulfuric acid is used as a catalyst, so a neutralizer must be added, which reduces the production efficiency
Patent CN200710187907.3 discloses a silicone waterproof emulsion for building surfaces, which is modified silicon (oxygen) Alkanes and silane coupling agents are emulsified by emulsifiers, but the silicone waterproof emulsion uses triethylamine or pyridine or N, N-dimethylbenzylamine as a catalyst, and the linear or branched sulfonyl chloride structure is a hydrophobic group , leading to a decline in the performance of the emulsion in harsh environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Taking the production of material 100g of the present invention as example used raw materials and preparation process thereof:

[0048] (1) At 30°C, disperse 0.5g of nano-silicon dioxide and 0.5g of nano-titanium dioxide into 10g of silane coupling agent, stir for 30min, filter and dry, and set aside; at room temperature (25°C) silane coupling agent Nano-silica and nano-titanium dioxide treated by the joint agent are ultrasonically dispersed into 10g of water, and ultrasonicated at 100w power for 10min to obtain a uniformly dispersed solution A;

[0049] (2) At 25°C, disperse 1g OP-10 emulsifier, 1.6g Span-60 emulsifier, 0.4g sodium lauryl sulfate into 16.4g water, stir at 250rpm for 15min, and stir evenly to obtain solution B ; Disperse 4 g of silicone oligomer, 0.6 g of 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one (DCOIT) into 65 g of n-hexadecyltriethoxysilane , stirring at a stirring speed of 250rpm for 15min to obtain a uniformly dispersed solution C;

[0050] (3)...

Embodiment 2

[0053] Taking the production of material 100g of the present invention as example used raw materials and preparation process thereof:

[0054] (1) Disperse 5g nano-silica and 2g nano-titanium dioxide into 20g silane coupling agent at 50°C, stir for 45min, filter and dry, and set aside; at room temperature (25°C) silane coupling agent The treated nano-silica and nano-titanium dioxide were ultrasonically dispersed into 20g of water, and ultrasonicated for 15min at a power of 500w to obtain a uniformly dispersed solution A;

[0055] (2) Disperse 1g of NP-20 emulsifier, 1.5g of Span-80 emulsifier, and 0.5g of sodium lauryl sulfate into 17g of water at 25°C, stir for 15min at a stirring speed of 250rpm, and stir evenly to obtain solution B; Disperse 0.4g of silicone oligomer and 0.6g of 2-n-octyl-4-isothiazolin-3-one (OIT) into 52g of n-hexadecyltriethoxysilane, stir at 50rpm for 40min, Obtain uniformly dispersed solution C;

[0056] (3) Slowly add solution A and solution C to so...

Embodiment 3

[0059] Taking the production of material 100g of the present invention as example used raw materials and preparation process thereof:

[0060] (1) At 50°C, disperse 10g of nano-silica and 0.5g of nano-titanium dioxide into 20g of silane coupling agent, stir for 45min, filter and dry, and set aside; at room temperature (25°C) silane coupling The nano-silica and nano-titanium dioxide treated with the agent were ultrasonically dispersed into 35g of water, and ultrasonically dispersed for 25min at a power of 1000w to obtain a uniformly dispersed solution A;

[0061] (2) Disperse 0.25g of Tween-80 emulsifier and 0.05g of sodium lauryl sulfate into 15.1g of water at 25°C, stir for 40min at a stirring speed of 50rpm, and stir evenly to obtain solution B; Disperse polymer, 0.1g 2-n-octyl-4-isothiazolin-3-one (OIT) into 35g n-hexadecyltriethoxysilane, stir at 100rpm stirring speed for 30min, and obtain uniformly dispersed solution C ;

[0062] (3) Slowly add solution A and solution C...

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Abstract

The invention provides an environment-friendly water-based nano coating material used for concrete protection, and a preparation method thereof. The environment-friendly water-based nano coating material comprises 15%-65% of an organic silane coupling agent, 0.5-10% of nano silica, 0.5-5% of nano titanium dioxide, 0.4%-4% of an organosilicon oligomer, 0.3%-3% of an emulsifier, 0.1%-0.6% of a bactericidal anti-algae agent, 0.01%-0.1% of a regulator, and the balance being deionized water. The environment-friendly water-based nano coating material used for the concrete protection takes advantages of a nanometer effect of nanoparticles and a hydrophobic effect of long-chain organosilicone coupling agent. The prepared environment-friendly water-based nano coating material used for the concrete protection has excellent protection performance.

Description

technical field [0001] The invention belongs to the field of concrete protection, and in particular relates to an environment-friendly water-based nano-coating material for concrete protection and a preparation method thereof. The environment-friendly coating material is mainly used for protection, waterproofing and durability of hydraulic engineering, roads and bridge concrete sexual enhancement etc. Background technique [0002] For a long time, concrete has been widely used as a high-strength, durable and economical building material. In fact, concrete is not as durable as expected during long-term use. In harsh climates or saline-alkaline environments and coastal environments, concrete structures The deterioration and damage of concrete are very obvious, which leads to a significant decrease in the durability of concrete engineering and affects the safe use of work. Therefore, the protection of concrete in hydraulic engineering, roads, bridges and harsh environments is m...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D7/12C09D5/16C09D5/14
Inventor 王洪松李磊刘加平田倩王瑞王文彬
Owner 江苏道成不锈钢管业有限公司
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