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Silica sol-organosilicone monomer capillary crystalline waterproof material and preparation method thereof

A technology for infiltrating crystalline and waterproof materials, applied in the field of construction engineering materials and their preparation, can solve the problems of reduced waterproof effect, poor adhesion of substrates, low penetration depth, etc., and achieve the effects of improving surface strength, low cost, and reducing volatilization rate

Active Publication Date: 2014-08-06
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silicone monomer-based permeable waterproof materials have some defects, such as low strength, poor adhesion to the substrate, high volatility, low penetration depth, high cost, and the waterproof effect will gradually decrease over time, etc.

Method used

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  • Silica sol-organosilicone monomer capillary crystalline waterproof material and preparation method thereof
  • Silica sol-organosilicone monomer capillary crystalline waterproof material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this example, 1 kg of silica sol-organosilicon monomer permeated crystalline waterproof material was prepared. The raw materials used and the preparation process are as follows:

[0019] Mix 100g of silica sol and 50g of γ-aminopropyltriethoxysilane, and add 700g of n-butyltriethoxysilane, 0.05g of nonylphenol polyoxygen, 5g of tartaric acid, and 10g of polyoxysilane in sequence under stirring at 500r / min. Vinyl alcohol, then adjust the pH value to 4.0 with phosphoric acid, react at 50°C for 5 hours, and finally add water to make up to 1kg.

[0020] In this example, the prepared silica sol-organosilicon monomer infiltration crystalline waterproof material is painted on the surface of dry mortar test block and concrete at room temperature, and the amount of coating film is 0.4kg / m 2 , The water absorption rate of the mortar is reduced by 72.5%, the penetration depth of the waterproof material on the concrete surface reaches 5.6mm, the waterproof performance of the con...

Embodiment 2

[0022] In this example, 1 kg of silica sol-organosilicon monomer permeated crystalline waterproof material was prepared. The raw materials used and the preparation process are as follows:

[0023] Mix 200g of silica sol and 80g of γ-aminopropyltriethoxysilane, and add 600g of n-butyltriethoxysilane, 0.05g of nonylphenol polyoxygen, 5g of tartaric acid, 10g of poly Vinyl alcohol, then adjust the pH value to 4.5 with phosphoric acid, react at 50°C for 6 hours, and finally add water to make up to 1kg.

[0024] In this example, the prepared silica sol-organosilicon monomer infiltration crystalline waterproof material is painted on the surface of dry mortar test block and concrete at room temperature, and the amount of coating film is 0.4kg / m 2 , The water absorption rate of the mortar is reduced by 64.9%, the penetration depth of the waterproof material on the concrete surface reaches 5.1mm, the waterproof performance of the concrete is improved, the capillary water absorption coe...

Embodiment 3

[0026] In this example, 1 kg of silica sol-organosilicon monomer permeated crystalline waterproof material was prepared. The raw materials used and the preparation process are as follows:

[0027] Mix 300g of silica sol and 100g of γ-aminopropyltriethoxysilane, and add 500g of n-butyltriethoxysilane, 0.04g of nonylphenol polyoxygen, 10g of tartaric acid, 20g of Vinyl alcohol, then adjust the pH value to 4.5 with phosphoric acid, react at 50°C for 6 hours, and finally add water to make up to 1kg.

[0028] In this example, the prepared silica sol-organosilicon monomer infiltration crystalline waterproof material is painted on the surface of dry mortar test block and concrete at room temperature, and the amount of coating film is 0.4kg / m 2 , The water absorption rate of the mortar is reduced by 68.2%, the penetration depth of the waterproof material on the concrete surface reaches 3.7mm, the waterproof performance of the concrete is improved, the capillary water absorption coeffi...

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Abstract

The invention belongs to the technical field of building construction materials and preparation of the building construction materials, and relates to a silica sol-organosilicone monomer capillary crystalline waterproof material and a preparation method thereof. The preparation method comprises the following steps: at first, mixing silica sol, organosilicone monomers, silane coupling agents, nonylphenol polyoxyethylene ether, tartaric acid and coalescing agents in proportion, controlling the temperature to 40-60 DEG C, stirring all the time, and cooling after sufficiently reacting for 3-6 h, wherein the weight percentage of the silica sol, the organosilicone monomers, the silane coupling agents, the nonylphenol polyoxyethylene ether, the tartaric acid and the coalescing agents are respectively 10%-60%, 20%-70%, 5%-15%, 0.003%-0.006%, 0.2%-2% and 1%-3%; then regulating the pH value to 3.5-5.5 with phosphoric acid, and at last, adding water to enable the weight percentage to 100% to obtain the silica sol-organosilicone monomer capillary crystalline waterproof material. The preparation process is simple, the cost is low, the prepared waterproof material is excellent in waterproofness, strong in resistance to harmful ion penetration, and excellent in weather resistance and durability.

Description

Technical field: [0001] The invention belongs to the technical field of construction engineering materials and their preparation, and relates to a construction engineering material and a preparation process thereof, in particular to a silica sol-organosilicon monomer permeable crystalline waterproof material and a preparation method thereof. Background technique: [0002] Concrete is the most widely used and used building material in modern civil engineering, and it is also the most important structural material. If the concrete is correctly designed according to the use environment, and at the same time, construction, curing and maintenance are carried out according to the requirements, the service life of the concrete can reach a hundred years or even longer. However, if the environmental conditions of the concrete are harsh, and all links are not fully considered and carefully implemented, the concrete structure may be destroyed prematurely. The reduction in the durabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/45
Inventor 赵铁军李绍纯金祖权张馨元耿永娟
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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