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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1,

[0030] A concrete seal hardener (boehmite sol type wear-resistant concrete seal hardener), formula: boehmite sol (particle size 20nm, pH value 3.0, solid content 35%) 40%, nano SiO 2 (Particle size 20nm) 3%, ethyl 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 perform the following steps in sequence:

[0033] (1) Weigh deionized water and ethanol in a container according to the weight ratio, add alkylphenol polyoxyethylene ether and wax powder (polyethylene wax powder) as surfactants, stir at room temperature for 10 minutes, and stir at 1000 rpm;

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

[0035] (3) To the solutio...

Example Embodiment

[0037] Example 2,

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

[0039] The preparation method is the same as in Example 1.

[0040] The prepared concrete sealing hardener is sprayed directly on the surface of the concrete, the dosage is 0.30g / m 2 , Test performance after 5 days of curing. The penetration depth of the sealing hardener into the concrete is 4.5mm; the abrasion 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.

Example Embodiment

[0041] Example 3.

[0042] A concrete sealing and hardening agent, formula: boehmite sol (particle size 40nm, pH value 4.5, solid content 50%) 30%, nano 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) Silicone) ethane 6%, polytetrafluoroethylene wax powder 5%, alkylphenol polyoxyethylene ether 0.5%, deionized water 37%, ethanol 9.5%.

[0043] The preparation method is the same as in Example 1.

[0044] The prepared concrete sealing hardener is sprayed directly on the surface of the concrete, the dosage is 0.25g / m 2 , Test performance after 5 days of curing. The penetration depth of the sealing hardener into the concrete is 4mm; the abrasion resistance is 90% higher than that of the untreated concrete; the hydrophobicity is 80% higher than that of the untreated concrete; the glossiness is 100% higher than that of the 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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