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Method for preparing waterproof cement mortar

A technology for waterproof mortar and cement, applied in the field of preparation of cement waterproof mortar, can solve the problems of rarely using polymer emulsion, poor weather resistance and corrosion resistance of mortar, etc., to enhance hydrophobicity, reduce negative charge, and increase organic components. Effect

Inactive Publication Date: 2018-06-05
CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention: Aiming at the problem that most of the cement waterproof mortar added is rubber powder, polymer emulsion with excellent comprehensive performance is rarely used, resulting in poor weather resistance and corrosion resistance of the mortar, a cement waterproof mortar is provided preparation method

Method used

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  • Method for preparing waterproof cement mortar

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Effect test

preparation example Construction

[0023] A preparation method of cement waterproof mortar, the preparation method comprises the steps of:

[0024] (1) Grind and sieve the montmorillonite to obtain the sieved product. According to parts by weight, take 30~40 parts of water, 10~15 parts of sieved product, 0.2~0.4 part of sodium carbonate, 0.03~0.08 part of Dispersant, mix water, sieve, sodium carbonate, and dispersant, stir in a constant temperature water bath at 50~60°C at 200~300r / min for 1~2h, filter to obtain filter residue, and filter residue at a temperature of 70~80 Dry at a constant temperature at ℃, grind through a 100-120 mesh sieve to obtain ground material, and set aside;

[0025] (2) In parts by weight, take 30~40 parts of ethanol, 10~15 parts of deionized water, 3~4 parts of polydimethylsiloxane, 3~4 parts of ammonia water, 1~2 parts of nano silicon dioxide , put ethanol, deionized water, polydimethylsiloxane, and nano-silicon dioxide into a container, stir for 30-40min at a temperature of 50-65°C...

Embodiment 1

[0029] The dispersant is sodium hexametaphosphate.

[0030] The emulsifier is obtained by mixing oleic acid and sorbitan trioleate evenly at a mass ratio of 1:0.8.

[0031] The initiator is potassium persulfate.

[0032] A preparation method of cement waterproof mortar, the preparation method comprises the steps of:

[0033] (1) Grind and sieve the montmorillonite to obtain the sieved product. In parts by weight, take 30 parts of water, 10 parts of the sieved product, 0.2 part of sodium carbonate, and 0.03 part of dispersant, and sieve the water, Mix the mixture, sodium carbonate, and dispersant, stir in a constant temperature water bath at 50°C at 200r / min for 1 hour, filter to obtain a filter residue, dry the filter residue at a constant temperature at a temperature of 70°C, and grind through a 100-mesh sieve to obtain a grind, which is set aside ;

[0034] (2) In parts by weight, take 30 parts of ethanol, 10 parts of deionized water, 3 parts of polydimethylsiloxane, 3 part...

Embodiment 2

[0038] The dispersant is sodium hexametaphosphate.

[0039] The emulsifier is obtained by mixing oleic acid and sorbitan trioleate evenly at a mass ratio of 1:0.8.

[0040] The initiator is ammonium persulfate.

[0041] A preparation method of cement waterproof mortar, the preparation method comprises the steps of:

[0042] (1) Grind and sieve the montmorillonite to obtain the sieved product. In parts by weight, take 35 parts of water, 12 parts of the sieved product, 0.3 part of sodium carbonate, and 0.05 part of dispersant, and sieve the water, Mix the powder, sodium carbonate, and dispersant, stir in a constant temperature water bath at 55°C at 250r / min for 1h, filter to obtain a filter residue, dry the filter residue at a constant temperature at a temperature of 75°C, and grind through a 110-mesh sieve to obtain a grind, which is set aside ;

[0043] (2) In parts by weight, take 35 parts of ethanol, 12 parts of deionized water, 3 parts of polydimethylsiloxane, 3 parts of...

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Abstract

The invention relates to the technical field of chemical coatings, and particularly relates to a method for preparing waterproof cement mortar. According to the preparation method, montmorillonite issubjected to sodium modification, as the montmorillonite is of a nano layered structure with a very large specific surface area, the montmorillonite is capable of effectively preventing corrosive ionsfrom entering an internal structure of cement mortar when being uniformly dispersed into the cement mortar, and due to a great amount of active functional groups on the surface of the montmorillonite, the active functional groups can join in the cement hydration process, cement hydration products are regulated and controlled to form dense structures on the surface, then pore structures inside thecement mortar are effectively improved, weak interface transition areas are effectively alleviated, and the bending strength and the corrosion resistance of the cement mortar are improved.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to a preparation method of cement waterproof mortar. Background technique [0002] Polymer cement waterproof mortar is a waterproof coating made of polymer emulsion and cement as the main structural material, adding various surfactants to stabilize filling powder, and undergoing water volatilization and hydration reaction. This type of product is generally used to match the finish Concealed waterproofing of protective structures, for example, to solve the problem of poor matching and bonding between roofing substrates, waterproof layers, insulation layers and protective layers, and to prevent the problem of lower insulation performance caused by separation between layers. [0003] Mortar is made by mixing inorganic cementitious material with fine aggregate and water in proportion, also known as mortar. For masonry and plastering projects, it can be divided into masonry mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/76
CPCC04B28/04C04B2111/20C04B2111/76C04B2201/50C04B14/06C04B22/064C04B18/08C04B14/104C04B22/10C04B2103/408C04B24/026C04B24/42C04B24/04C04B24/20C04B24/32
Inventor 龙海燕乔舍林凡
Owner CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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