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Anti-salting-out and anti-whiskering seal primer and preparation method thereof

A sealing primer and anti-pan-alkali technology, applied in the coating and other directions, can solve problems such as affecting the appearance and decorative effect of the paint film, and achieve the effects of increasing adhesion and alkali resistance, good film-forming effect, and good sealing effect.

Inactive Publication Date: 2016-11-23
林金溪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to soluble alkalis, they will be brought to the surface of the exterior wall paint by rainwater. When the salts dry, they will form white crystals, which will remain on the paint film and affect the appearance and decorative effect of the paint film.

Method used

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  • Anti-salting-out and anti-whiskering seal primer and preparation method thereof
  • Anti-salting-out and anti-whiskering seal primer and preparation method thereof
  • Anti-salting-out and anti-whiskering seal primer and preparation method thereof

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preparation example Construction

[0037] The preparation method of described anti-salt-alkali primer, is characterized in that: comprises the steps:

[0038] (1) Control the stirring rate to 300-500rmp, add 25-40 parts of deionized water, 0.5-0.7 parts of thickener and 0.1-0.3 parts of PH regulator to the mixer in sequence, and stir for 5-10 minutes;

[0039] (2) Then increase the speed to 800-1000rmp, add 0.1-0.2 parts of wetting agent, 0.5-1 part of dispersant, 0.5-1 part of defoamer, 5-8 parts of titanium dioxide and 5-8 parts of mica powder, 6.3-11 parts of calcium carbonate, then increase the speed to 1800-2000rmp, and stir for 15-20min;

[0040] (3) Finally, reduce the speed to 1000-1200rmp, add 36-45 parts of emulsion, 0.8-1.5 parts of film-forming aid and 1-2.5 parts of antifreeze in sequence, stir for 10-15 minutes and sieve with 200-300 mesh, that is Obtain the product of the present invention.

[0041] 2. Preparation of saline-alkali resistant primer

[0042]

[0043] (two) embodiment:

Embodiment 1

[0045] Preparation of cationic styrene-acrylic emulsion

[0046]

[0047] Described cationic styrene-acrylic emulsion is formulated according to the following steps:

[0048]Add 25.1 parts of styrene, 41.2 parts of butyl acrylate, 12.5 parts of methyl methacrylate, 5.1 parts of a-methacrylic acid, and 1.6 parts of cationic functional monomer , 1.6 parts of acrylamide, 2.2 parts of emulsifier and 80 parts of deionized water, control the stirring rate to 1000rmp, stir for 15min, and obtain the monomer pre-emulsion, then when the temperature is raised to 75°C, the stirring speed is 200rmp, slowly dropwise add the 0.6 parts of azobisisobutylamidine hydrochloride and 10 parts of water azobisisobutylamidine hydrochloride solution, the time of dropping is 1.5h, after the dropwise addition is completed, it is incubated for 1h, and the material is discharged at room temperature to obtain the cationic phenylpropanoid lotion.

[0049] 2. Preparation of saline-alkali resistant primer...

Embodiment 2

[0057] Preparation of cationic styrene-acrylic emulsion

[0058]

[0059]

[0060] Described cationic styrene-acrylic emulsion is formulated according to the following steps:

[0061] Add 31.1 parts of styrene, 49.3 parts of butyl acrylate, 18.5 parts of methyl methacrylate, 8.6 parts of a-methacrylic acid, and 2.3 parts of cationic functional monomer , 1.9 parts of acrylamide, 2.9 parts of emulsifier and 85 parts of deionized water, control the stirring rate to 1200rmp, and stir for 15-30min to obtain a monomer pre-emulsion, then when the temperature is raised to 80°C, the stirring speed is 300rmp, slowly Add azobisisobutylamidine hydrochloride solution containing 0.3 parts of azobisisobutylamidine hydrochloride and 25 parts of water, the time for the dropwise addition is 1.8 hours, after the completion of the dropwise addition, keep it warm for 1.5 hours, and discharge at room temperature to obtain Cationic styrene-acrylic emulsion.

[0062] 2. Preparation of saline-...

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Abstract

The invention discloses anti-salting-out and anti-whiskering seal primer and a preparation method. The anti-salting-out and anti-whiskering seal primer is prepared from, by mass, 25-40 parts of deionized water, 0.5-0.7 part of a thickening agent, 0.1-0.3 part of a PH regulating agent, 0.5-1 part of a dispersing agent, 0.1-0.2 part of a wetting agent, 0.5-1 part of a defoaming agent, 5-8 parts of titanium dioxide, 5-8 parts of mica powder, 6.3-11 parts of calcium carbonate, 36-45 parts of cationic styrene-acrylic emulsion, 0.8-1.5 parts of a film forming aid and 1-2.5 parts of an anti-freezing agent. According to the anti-salting-out and anti-whiskering seal primer, the adhesive force and the alkali resistance of a coating and a substrate can be enhanced, and meanwhile capillary pores of mortar are sealed to prevent alkali and salts from being separated out.

Description

technical field [0001] The invention relates to an anti-salting-out and anti-efflorescence sealing primer and a preparation method thereof, which can be used for an external wall sealing primer and belongs to the field of water-based architectural coatings. Background technique [0002] Architectural coatings refer to coatings used to coat architectural facilities constructed of concrete, masonry, etc. The base of the exterior wall of the building is generally concrete, cement mortar or lime cement mortar. In these cement building materials, there are calcium hydroxide and some salts. The cement mortar is plastered on the wall, and part of the calcium hydroxide in the drying and maintenance process reacts with carbon dioxide in the air to form calcium carbonate. If the construction period is rushed and the exterior wall paint is started due to insufficient maintenance, there will be more alkaline substances in the wall. In this way, once it rains, due to the high water abs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D7/12C08F220/18C08F212/08C08F220/14C08F220/06C08F220/34C08F220/56C08F2/28
CPCC08F2/28C08F220/18C08F220/1804C08L2205/035C09D7/61C09D133/08C08L1/02C08L75/04C08K13/02C08K2003/2241C08K3/34C08K2003/265C08F212/08C08F220/14C08F220/06C08F220/34C08F220/56
Inventor 林金溪
Owner 林金溪
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