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Boehmite sol type wear-resisting concrete sealing hardening agent and preparation method of boehmite sol type wear-resisting concrete sealing hardening agent

A boehmite sol and concrete technology is applied in the field of building materials, which can solve the problems of inconvenient transportation and storage, damage to the floor strength, troublesome construction, etc. The effect of improving the hydrophobicity

Active Publication Date: 2016-06-08
集纳(温州)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first category is sodium-based salt products with sodium silicate as the main component, which can improve the strength and wear resistance of concrete, but its pH value is often around 12, and it is easy to form alkaline substances, salt substances, etc. on the concrete surface Precipitation not only affects the aesthetics of the ground, but also makes the ground slippery, seriously affecting the use
In addition, the strong alkaline metal ions are easy to react with the alkali aggregate in the concrete to produce by-products of volume expansion, resulting in small cracks or even cracks on the ground, which will damage the strength of the floor in severe cases and cause safety problems
[0004] The second category is potassium-based salt products with potassium silicate as the main component, and its performance is not significantly improved compared with sodium-based salts
This invention comprehensively utilizes the dual effects of lithium-based salt hardener and organic resin hardener to achieve its dense hardening effect, but its construction is troublesome, and because it involves two components, it is very inconvenient in transportation and storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A concrete seal hardener (boehmite sol type wear-resistant concrete seal hardener), formula: boehmite sol (particle diameter 20nm, pH value 3.0, solid content 35%) 40%, nanometer SiO 2 (particle size 20nm) 3%, tetraethyl orthosilicate 2%, bis-(triethoxysilylpropyl) amine 3%, polyethylene wax powder 1%, alkylphenol polyoxyethylene ether 0.2%, Deionized water 40%, ethanol 10.8%.

[0031] Remarks: Bis-(triethoxysilylpropyl)amine, that is, bis[3-(triethoxysilane)propyl]amine.

[0032] The preparation method is to carry out the following steps in sequence:

[0033] (1) Take deionized water and ethanol in a container by weight ratio, add alkylphenol polyoxyethylene ether and wax powder (polyethylene wax powder) as a surfactant, stir at room temperature for 10min, and the stirring rate is 1000rpm;

[0034] (2) Add boehmite sol to the solution prepared in step (1), and continue stirring at room temperature for 10 minutes at a stirring rate of 500 rpm;

[0035] (3) Add orthos...

Embodiment 2

[0038] A concrete sealing hardener, formula: boehmite sol (particle diameter 10nm, pH value 3.5, solid content 40%) 35%, nanometer Al 2 o 3 (40nm) 5%, bis-(triethoxysilylpropyl)amine 3%, 1,2-bis(trimethoxysilyl)ethane 5%, polytetrafluoroethylene wax powder 2%, alkanes Base phenol polyoxyethylene ether 0.3%, deionized water 40%, ethanol 9.7%.

[0039] The preparation method is identical to Example 1.

[0040] The prepared concrete seal hardener is directly sprayed on the concrete surface, and the dosage is 0.30g / m 2 , Test performance after 5 days of curing. The seal hardener penetrates into the concrete to a depth of 4.5mm; the wear resistance is 70% higher than that of untreated concrete; the hydrophobicity is 80% higher than that of untreated concrete; the gloss is 80% higher than that of untreated concrete.

Embodiment 3

[0042]A concrete sealing hardener, formula: boehmite sol (particle diameter 40nm, pH value 4.5, solid content 50%) 30%, nanometer SiO 2 (Particle size 20nm) 4%, Nano Al 2 o 3 (particle size 40nm) 4%, bis-(trimethoxysilylpropyl)amine 2%, bis-(triethoxysilylpropyl)amine 2%, 1,2-bis(trimethoxy Silicon-based) ethane 6%, polytetrafluoroethylene wax powder 5%, alkylphenol polyoxyethylene ether 0.5%, deionized water 37%, ethanol 9.5%.

[0043] The preparation method is identical to Example 1.

[0044] The prepared concrete seal hardener is directly sprayed on the concrete surface, and the consumption is 0.25g / m 2 , Test performance after 5 days of curing. The seal hardener penetrates into the concrete to a depth of 4mm; the wear resistance is 90% higher than that of untreated concrete; the hydrophobicity is 80% higher than that of untreated concrete; the gloss is 100% higher than that of untreated concrete.

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Abstract

The invention discloses a boehmite sol type wear-resisting concrete sealing hardening agent. The boehmite sol type wear-resisting concrete sealing hardening agent is prepared from the following components in percentage by weight: 30 percent to 60 percent of boehmite sol, 3 percent to 8 percent of nano particles, 5 percent to 10 percent of a silane coupling agent, 1 percent to 5 percent of wax powder, 0.1 percent to 0.5 percent of a surfactant, 5 percent to 11 percent of ethanol and the balance of de-ionized water, wherein the silane coupling agent is selected from tetraethoxysilane, 3-aminopropyltriethoxy silane, gamma-glycidyloxypropyltrimethoxysilane, gamma-(methacryloxy)propyltrimethoxysilane, bi-(trimethoxysilicylpropyl)amine, bi-(triethoxysilylpropyl)amine, 1,2-bi(trimethoxysilyl)ethane and the like. The invention further discloses a preparation method of the boehmite sol type wear-resisting concrete sealing hardening agent.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a concrete sealing hardener and a preparation method thereof. Background technique [0002] At present, there are three main types of concrete seal hardeners in the domestic and foreign markets: [0003] The first category is sodium-based salt products with sodium silicate as the main component, which can improve the strength and wear resistance of concrete, but its pH value is often around 12, and it is easy to form alkaline substances, salt substances, etc. on the concrete surface Precipitation not only affects the aesthetics of the ground, but also makes the ground slippery, which seriously affects the use. In addition, the strong alkaline metal ions are easy to react with the alkali aggregate in the concrete to produce by-products of volume expansion, resulting in small cracks or even cracks on the ground, which will damage the strength of the floor in severe ca...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B14/06C04B14/30C04B24/38C04B24/02C04B24/26
CPCC04B40/0039C04B14/303C04B14/062C04B24/42C04B24/2611C04B24/386C04B24/02C04B20/008C04B24/2682
Inventor 杨辉汪海风吴春春阙永生吴旭日林伟峰
Owner 集纳(温州)新材料科技有限公司
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