A kind of waterproof mortar emulsion and preparation method thereof

A waterproof mortar and emulsion technology, applied in the direction of coating, can solve the problems of large shrinkage, low density, poor waterproof performance, etc., and achieve the effect of reducing micro-cracks, improving impermeability and enhancing impermeability.

Active Publication Date: 2022-07-15
东联北方科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cement insulation mortar in the prior art usually uses cement-based binder materials, expanded polystyrene particles as light aggregates, large shrinkage, low density, and poor waterproof performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A waterproof mortar emulsion, the waterproof mortar emulsion comprises 110g of styrene-acrylic emulsion, 15g of 325 mesh heavy calcium, 7.5g of diethanolamine modified metakaolin, 7.5g of naphthalene-based water reducing agent, 2.5g of hydroxyethyl cellulose, polyacrylamide 2.5 g, 1.5 g of 1,2-benzisothiazolin-3-one, 1.5 g of polydimethylsiloxane, and 135 g of water.

[0033] The modification method of diethanolamine-modified metakaolin is: weigh 22.5g of metakaolin and add it to the disperser, add 0.11g of diethanolamine, and then adjust the rotation speed of the disperser to 775r / min to disperse the metakaolin for 18min.

[0034] The preparation method of waterproof mortar emulsion includes the following steps:

[0035] (1) Weigh 45g of water and 2.5g of hydroxyethyl cellulose, add them to the stirring tank A, stir evenly at a speed of 175r / min at a temperature of 15°C, then weigh 1.25g of polyacrylamide and add Continue stirring in the stirring tank until the mixture ...

Embodiment 2

[0039] A waterproof mortar emulsion, the waterproof mortar emulsion comprises 100g of styrene-acrylic emulsion, 10g of 325-mesh heavy calcium, 5g of diethanolamine modified metakaolin, 5g of naphthalene-based water reducing agent, 1g of hydroxyethyl cellulose, 1g of polyacrylamide, 1g of , 2-benzisothiazolin-3-one 0.5g, polydimethylsiloxane 0.5g, water 120g.

[0040] The difference between this example and Example 1 is only that the weight of the raw materials for the waterproof mortar emulsion is different. The modification method of diethanolamine modified metakaolin and the preparation method of the waterproof mortar emulsion are the same as those in Example 1 (modification method and In each step of the preparation method, the added content of each component is adapted to be modified).

Embodiment 3

[0042] A waterproof mortar emulsion, the waterproof mortar emulsion comprises 120g of styrene-acrylic emulsion, 20g of 325-mesh heavy calcium, 10g of diethanolamine modified metakaolin, 10g of naphthalene-based water reducing agent, 5g of hydroxyethyl cellulose, 5g of polyacrylamide, 1g of , 2-benzisothiazolin-3-one 2.5g, polydimethylsiloxane 2.5g, water 150g.

[0043] The difference between this example and Example 1 is only that the weight of the raw materials for the waterproof mortar emulsion is different. The modification method of diethanolamine modified metakaolin and the preparation method of the waterproof mortar emulsion are the same as those in Example 1 (modification method and In each step of the preparation method, the added content of each component is adapted to be modified).

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Abstract

The invention relates to a waterproof mortar emulsion. The raw materials of the waterproof mortar emulsion specifically include the following components in parts by weight: 100-120 parts of styrene-acrylic emulsion, 10-20 parts of heavy calcium, 5-10 parts of metakaolin, 5-10 parts of water agent, 1-5 parts of hydroxyethyl cellulose, 1-5 parts of polyacrylamide, 0.5-2.5 parts of bactericide, 0.5-2.5 parts of defoamer, and 120-150 parts of water. In the present invention, polyacrylamide and Ca in solution 2+ The interaction of each other leads to the formation of a viscous gel, from colloidal particles to uniform rubber-like solids. The rubber-like solids are densely filled in the voids of the waterproof mortar, which play the role of flexible filling and flexible reinforcement, and improve the waterproof mortar emulsion. The hardened physical structure relieves the internal stress and reduces the generation of micro-cracks, thereby enhancing the compactness, flexibility, impermeability, bonding strength and flexural strength of the waterproof mortar.

Description

technical field [0001] The invention relates to the technical field of mortar, in particular to a waterproof mortar emulsion and a preparation method thereof. Background technique [0002] Waterproof mortar is also called cationic chloroprene latex waterproof and anti-corrosion material. Cationic chloroprene latex is a polymer molecular modified base polymer waterproof and anti-corrosion system. It is a high polymer latex composed of imported epoxy resin modified latex and domestic neoprene latex and polyacrylate, synthetic rubber, various emulsifiers, modified latex, etc. [0003] The cement thermal insulation mortar in the prior art is usually cement-based cementitious material, and expanded polystyrene particles are light aggregates, which have large shrinkage rate, low density and poor waterproof performance. SUMMARY OF THE INVENTION [0004] Aiming at the deficiencies of the prior art, one of the objectives of the present invention is to provide a waterproof mortar e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/14C09D7/61C09D7/62C09D7/65
CPCC09D125/14C09D7/61C09D7/62C09D7/65C08K2201/014C08K2003/265C08L2205/035C08L1/284C08L33/26C08K3/26C08K3/34C08K9/04C08K5/46C08K13/06
Inventor 吕书人
Owner 东联北方科技(北京)有限公司
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