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Waterproof mortar emulsion and preparation method thereof

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

Active Publication Date: 2020-09-08
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 comprising 110g of styrene-acrylic emulsion, 15g of 325 mesh heavy calcium, 7.5g of diethanolamine modified metakaolin, 7.5g of naphthalene-based water reducer, 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 as follows: weigh 22.5g metakaolin and add it to the disperser, add 0.11g diethanolamine, and then adjust the speed of the disperser to 775r / min to disperse the metakaolin for 18min.

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

[0035] (1) Weigh 45g of water and 2.5g of hydroxyethyl cellulose, add them together 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 to stir in the mixing tank until the mixture is evenly stirred to obtain the mix...

Embodiment 2

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

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

Embodiment 3

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

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

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Abstract

The invention relates to a waterproof mortar emulsion, which comprises the following raw materials by weight: 100-120 parts of a styrene-acrylic emulsion, 10-20 parts of heavy calcium carbonate, 5-10parts of metakaolin, 5-10 parts of a water reducing agent, 1-5 parts of hydroxyethyl cellulose, 1-5 parts of polyacrylamide, 0.5-2.5 parts of a bactericide, 0.5-2.5 parts of a defoaming agent and 120-150 parts of water. In the invention, polyacrylamide and Ca<2+> in the solution are mutually matched and acted to generate a viscous gel, colloidal particles are converted into a uniform rubber-like solid, which fills the gaps of the waterproof mortar densely to reach the effects of flexible filling and flexible reinforcement, the hardened physical texture structure of the waterproof mortar emulsion is improved, the internal stress is relieved, and microcracks are reduced, therefore the compactness, flexibility, impermeability, bonding strength and breaking strength of the waterproof mortar are enhanced.

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 neoprene latex waterproof and anticorrosion material. Cationic neoprene latex is a polymer molecular modification base polymer waterproof and anticorrosion system. It is a high polymer latex composed of imported epoxy resin modified latex, domestic neoprene latex, polyacrylate, synthetic rubber, various emulsifiers, modified latex, etc. [0003] The cement insulation mortar in the prior art usually uses cement-based binder material, and expanded polystyrene particles are light aggregate, which has a large shrinkage rate, low density, and poor waterproof performance. Contents of the invention [0004] In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide a waterproof mortar emulsion, which has th...

Claims

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Application Information

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Patent Type & Authority Applications(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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