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Special polymer cement coating containing inorganic powder in liquid material

A technology for cement coatings and inorganic powders, which can be used in cement coatings, carboxyl rubber coatings, coatings, etc., and can solve problems such as performance defects of polymer cement coatings

Inactive Publication Date: 2021-09-07
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of performance defects of polymer cement coatings in service state

Method used

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  • Special polymer cement coating containing inorganic powder in liquid material
  • Special polymer cement coating containing inorganic powder in liquid material
  • Special polymer cement coating containing inorganic powder in liquid material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The coating of the present embodiment is made up of liquid material and powder two kinds of components, and specific proportion is as follows:

[0022] Liquid composition:

[0023] Silane-modified acrylic emulsion: 100 parts

[0024] Ground calcium carbonate powder: 90 parts

[0025] Silica powder: 30 parts

[0026] Silane: 0.4 parts

[0027] Defoamer: 0.4 parts

[0028] Wetting agent: 0.3 parts

[0029] Thickener: 0.1 to 0.2 parts

[0030] Surfactant: 1.5 parts

[0031] Powder composition:

[0032] Cement: 22 parts

[0033] Superplasticizer: 0.2 parts

[0034] The silane-modified acrylic emulsion of this embodiment is purchased from the market, and its glass transition temperature is lower than 10 degrees Celsius.

[0035] The preferred average particle size of ground calcium carbonate powder in the present embodiment is less than 15 microns.

[0036] In this example, the silicon dioxide powder was purchased from the market with a particle size of 325 mesh. ...

Embodiment 2

[0048] The coating of the present embodiment is made up of liquid material and powder two kinds of components, and specific proportion is as follows:

[0049] Liquid composition:

[0050] Styrene-butadiene emulsion containing carboxylic acid groups: 100 parts

[0051] Ground calcium carbonate powder: 90 parts

[0052] Silica powder: 35 parts

[0053] Epoxy silane: 0.4 parts

[0054] Defoamer: 0.4 parts

[0055] Wetting agent: 0.3 parts

[0056] Thickener: 0.1 parts

[0057] Powder composition:

[0058] Cement: 15 parts

[0059] High-efficiency water reducer: 0.2 parts of the styrene-butadiene emulsion containing carboxylic acid groups in this embodiment is purchased from the market, and its glass transition temperature is lower than -5 degrees Celsius.

[0060] The preferred average particle size of ground calcium carbonate powder in the present embodiment is less than 15 microns.

[0061] In this example, the silicon dioxide powder was purchased from the market with ...

Embodiment 3

[0073] The coating in this example is composed of liquid material and powder material, and the mass ratios of polymer and inorganic material in the final formulation are 1:1, 1:3 and 1:5, respectively. The specific ratio is as follows:

[0074]

[0075] The styrene-butadiene emulsion of this embodiment is purchased from the market, has carboxylic acid groups, and its glass transition temperature is lower than -10 degrees Celsius.

[0076] The preferred average particle size of ground calcium carbonate powder in the present embodiment is less than 15 microns.

[0077] In this example, the silicon dioxide powder was purchased from the market with a particle size of 325 mesh.

[0078] In this embodiment, epoxy silane is purchased from the market.

[0079] In this example, the defoamer was purchased from BASF.

[0080] The wetting agent in this example is a water-based wetting and dispersing machine purchased from Hemings.

[0081] Both thickeners in this example are purcha...

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Abstract

The invention discloses a polymer cement coating containing inorganic powder in a liquid material. The coating is prepared from a liquid material component A and a powder material component B. The liquid material component A contains polymer emulsion, inorganic powder with chemical activity on the surface, silane or siloxane, and can contain or do not contain other inorganic filler. The powder material component B contains cement and other components. The mass ratio of the polymer solid to the inorganic material in the coating obtained by uniformly mixing and stirring the liquid material component A and the powder material component B according to a certain proportion is 1:1-1:5.

Description

[0001] Invention name [0002] A special polymer cement coating containing inorganic powder in a liquid material technical field [0003] The invention relates to the technical field of building materials, in particular to a flexible polymer cement-based coating suitable for serving in a long-term water immersion environment or a continuous high-humidity environment. Background technique [0004] In the field of construction, water-based coatings have received continuous attention and promotion because of their safety. Polymer cement coatings have been widely used in the fields of civil buildings and commercial buildings because of their excellent base-layer bonding ability and waterproof ability. Due to the long-term impact of the environment, the performance of cement coatings in the service state will generally be greatly attenuated. The reason is that the properties of the raw materials contained in the paint are affected by the environment for a long time, and the sec...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D113/00C09D109/06C09D7/61C09D1/08
CPCC09D133/04C09D113/00C09D109/06C09D7/61C09D1/08C08K2003/265C08K13/02C08K3/26C08K3/36C08K3/00
Inventor 张望清庞博
Owner NANKAI UNIV
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