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Cement-based waterproof material and preparation process thereof

A waterproof material, cement-based technology, applied in the field of waterproof materials, can solve the problems of low bonding strength and flexibility, short initial setting time, etc.

Inactive Publication Date: 2021-05-04
泗县邺霖建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waterproof material disclosed in the invention is prepared by a simple physical mixing method, has a short initial setting time, can penetrate into the interior of the cement-based material to form crystals to block micro-cracks, and also endows the cement-based material with long-term self-repairing properties and good waterproof, Durable performance, but its bond strength and flexibility are not high

Method used

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preparation example Construction

[0025] In one embodiment of the present invention, the sulfonated SBS has a sulfonation degree of 8-16%, wherein the mass content of styrene is 30-45%; and the number average molecular weight is 50000-80000. In one embodiment of the present invention, the 2-acrylamido-2-methylpropanesulfonic acid / N-trimethylolmethacrylamide / aluminum acrylate / vinyltriethoxysilane / 3,5- The preparation method of diamino-1H-pyrazole-4-carboxylic acid allyl ester copolymer comprises the steps of: combining 2-acrylamido-2-methylpropanesulfonic acid, N-trimethylolmethacrylamide , Vinyltriethoxysilane, allyl 3,5-diamino-1H-pyrazole-4-carboxylate, and initiator are added to the high boiling point solvent, and the reaction is stirred at 65-75°C in an inert gas atmosphere After 4-6 hours, the solvent was removed by rotary evaporation to obtain 2-acrylamido-2-methylpropanesulfonic acid / N-trimethylolmethacrylamide / vinyl triethoxysilane / 3,5-di Allyl amino-1H-pyrazole-4-carboxylate copolymer.

[0026] In o...

Embodiment 1

[0037] A cement-based waterproof material, characterized in that it includes the following components in parts by weight: 30 parts of cement, 15 parts of pozzolan, 1 part of fluorogypsum, 4 parts of hydrophilic nitrogen-doped carbon nanofibers, hyperbranched 4A 2 parts of molecular sieve, 1 part of epoxy-based organic fluorosilicone oil, 5 parts of sulfonated SBS, 3 parts of hyperbranched sulfonate surfactant SHBP-1, 2-acrylamido-2-methylpropanesulfonic acid / N-tri 8 parts of methylolmethacrylamide / vinyltriethoxysilane / 3,5-diamino-1H-pyrazole-4-carboxylate allyl ester copolymer, 0.1 part of aluminum acrylate, 0.1 part of water-soluble initiator parts, 20 parts of water.

[0038] The cement is ordinary Portland 42.5 cement; the particle diameter of the pozzolan is 300 mesh; the particle diameter of the fluorogypsum is 500 mesh; the sulfonation degree of the sulfonated SBS is 8%, wherein the mass of styrene The content is 30%; the number average molecular weight is 50000.

[00...

Embodiment 2

[0042] A cement-based waterproof material, characterized in that it comprises the following components in parts by weight: 33 parts of cement, 17 parts of pozzolan, 1.5 parts of fluorogypsum, 5 parts of hydrophilic nitrogen-doped carbon nanofibers, hyperbranched 4A 2.5 parts of molecular sieve, 1.5 parts of epoxy-based organofluorosilicone oil, 6 parts of sulfonated SBS, 3.5 parts of hyperbranched sulfonate surfactant SHBP-1, 2-acrylamido-2-methylpropanesulfonic acid / N-tri 9 parts of methylolmethacrylamide / vinyltriethoxysilane / 3,5-diamino-1H-pyrazole-4-carboxylate allyl ester copolymer, 0.15 parts of aluminum acrylate, 0.13 parts of water-soluble initiator part, 23 parts of water; the cement is ordinary Portland 42.5R cement; the particle diameter of the pozzolan is 400 mesh; the particle diameter of the fluorogypsum is 600 mesh; the sulfonation degree of the sulfonated SBS is 10 %, wherein the mass content of styrene is 33%; the number average molecular weight is 60000.

[0...

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Abstract

The invention discloses a cement-based waterproof material which is characterized in that: the cement-based waterproof material comprises the following components in parts by weight: 30-40 parts of cement, 15-25 parts of volcanic ash, 1-3 parts of fluorgypsum, 4-8 parts of hydrophilic nitrogen-doped carbon nanofibers, 2-5 parts of a hyperbranched 4A molecular sieve, 1-3 parts of epoxy organic fluorosilicone oil, 5-10 parts of sulfonated SBS, 3-5 parts of a hyperbranched sulfonate surfactant SHBP-1, 8-12 parts of 2-acrylamido-2-methylpropanesulfonic acid / N-trihydroxymethyl methacrylamide / vinyltriethoxysilane / 3, 5-diamino-1H-pyrazole-4-allyl carboxylate copolymer, 0.1-0.3 part of aluminum acrylate, 0.1-0.2 part of water-soluble initiator and 20-30 parts of water. The invention also provides a preparation method of the cement-based waterproof material. The cement-based waterproof material provided by the invention is excellent in comprehensive performance and performance stability, strong in matrix deformation adaptability, sufficient in toughness and bonding strength, compact in structure, better in waterproof performance and durability and longer in service life.

Description

technical field [0001] The invention relates to the technical field of waterproof materials, in particular to a cement-based waterproof material and a preparation method thereof. Background technique [0002] With the rapid development of the construction industry, waterproof engineering, as an important part of construction, is increasingly valued by this industry. At present, ordinary concrete in construction projects has poor impermeability and waterproof performance, and cracks often occur. In order to achieve the purpose of concrete impermeability and waterproof, methods such as adding waterproof admixture, adding more cement or increasing sand rate are often used in impermeable concrete. Waterproof material acts as a flexible building material product that resists external rainwater and groundwater leakage. As a non-leakage connection between the engineering foundation and the building, it is the first barrier for waterproofing the entire project and plays a vital rol...

Claims

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Application Information

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IPC IPC(8): C04B28/04C08F220/58C08F220/06C08F230/08C08F220/40C04B111/27
CPCC04B28/04C08F220/585C04B2111/27C04B2111/23C04B2111/20C08F220/58C08F220/06C08F230/085C08F220/40C04B14/14C04B22/146C04B14/386C04B14/047C04B24/42C04B24/16C04B24/163
Inventor 程焕芹季路路
Owner 泗县邺霖建筑科技有限公司
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