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A kind of anti-ultraviolet exterior wall paint and preparation method thereof

A technology for exterior wall coatings and UV protection, applied in coatings and other directions, can solve the problem of unsolved compatibility between nano-titanium dioxide and polymers, and achieve environmental protection and construction safety, excellent stability, and enhanced hardness. Effect

Active Publication Date: 2017-06-20
HEBEI CARPOLY PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the combination of hydrotalcite and nano-titanium dioxide will enhance the anti-ultraviolet performance of nano-titanium dioxide, the compatibility problem between nano-titanium dioxide and polymers is still unsolved

Method used

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  • A kind of anti-ultraviolet exterior wall paint and preparation method thereof
  • A kind of anti-ultraviolet exterior wall paint and preparation method thereof
  • A kind of anti-ultraviolet exterior wall paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In terms of parts by mass, the formula of the anti-ultraviolet exterior wall paint consists of:

[0056] Styrene Acrylic Lotion 25

[0057] Nano titanium dioxide / acrylate polymer composite emulsion 5

[0058] Titanium dioxide 5

[0059] Heavy Calcium Powder 20

[0060] Ethylene glycol 1.5

[0061] PE100 0.2

[0062] Ethylene glycol 1.8

[0063] Sodium Lauryl Sulfate 0.6

[0064] Butanol 0.4

[0065] Dibutyl phthalate 0.1

[0066] BIT 0.2

[0067] AMP-95 0.1

[0068] Ammonia 0.1

[0069] Deionized water 40

[0070] Prepare UV-resistant exterior paints as follows:

[0071] (1) Preparation of Nano Titanium Dioxide / Acrylic Ester Polymer Composite Emulsion

[0072] 1) Preparation of modified nano titanium dioxide

[0073] In terms of parts by mass, mix 5 parts of nano-titanium dioxide with 200 parts of ethanol, 800W ultrasonic dispersion for 35 minutes, add 5 parts of vinyltriethoxysilane, react at 80°C for 6 hours, centrifuge, wash with absolute ethanol, centr...

Embodiment 2

[0082] In terms of parts by mass, the formula of the anti-ultraviolet exterior wall paint consists of:

[0083] Pure acrylic emulsion 30

[0084] Nano titanium dioxide / acrylate polymer composite emulsion 7

[0085] Titanium dioxide 6

[0086] Mica powder 17

[0087] Ethylene glycol 1.5

[0088] Ethanol 0.2

[0089] Propylene glycol 1.7

[0090] Polyoxyethylene alkylphenyl ether 0.5

[0091] 1,2-Propanediol 0.3

[0092] Hydroxymethylcellulose 0.3

[0093] BIT / MIT0.3

[0094] AMP-95 0.1

[0095] Ammonia 0.1

[0096] Deionized water 35

[0097] Prepare UV-resistant exterior paints as follows:

[0098] (1) Preparation of Nano Titanium Dioxide / Acrylic Ester Polymer Composite Emulsion

[0099] 1) Preparation of modified nano titanium dioxide

[0100] In terms of parts by mass, mix 3.2 parts of nano-titanium dioxide with 150 parts of isopropanol, disperse with 400W ultrasonic for 20 minutes, add 1.2 parts of vinyltrimethoxysilane, react at 70°C for 3.5h, centrifuge, was...

Embodiment 3

[0109] In terms of parts by mass, the formula of the anti-ultraviolet exterior wall paint consists of:

[0110] Ethylene Propylene Emulsion 33

[0111] Nano titanium dioxide / acrylate polymer composite emulsion 9

[0112] Titanium dioxide 7

[0113] Kaolin 14

[0114] Ethylene glycol 1.5

[0115] Propylene glycol 0.2

[0116] Hexylene glycol 1.8

[0117] 2-Amino-2-methyl-1-propanol 0.5

[0118] Octanol 0.3

[0119] Hydroxyethylcellulose 0.2

[0120] BIT 0.3

[0121] Ammonia 0.1

[0122] AMP-95 0.1

[0123] Deionized water 32

[0124] Prepare UV-resistant exterior paints as follows:

[0125] (1) Preparation of Nano Titanium Dioxide / Acrylic Ester Polymer Composite Emulsion

[0126] 1) Preparation of modified nano titanium dioxide

[0127]In terms of parts by mass, mix 2.25 parts of nano-titanium dioxide with 110 parts of methanol, 600W ultrasonic dispersion for 10 minutes, add 2.25 parts of γ-methacryloxypropyltrimethoxysilane, react at 60°C for 3.5h, centrifuge, an...

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Abstract

The invention discloses an anti-ultraviolet exterior wall paint and a preparation method thereof. The preparation method first coats a layer of acrylate polymer on the surface of nano-titanium dioxide to obtain nano-titanium dioxide / acrylate polymer composite emulsion, then fully mixes the composite emulsion with acrylate polymer exterior wall emulsion, and then adds pigments, fillers and additives and water. The coating coats a layer of acrylate polymer on the surface of nano-titanium dioxide, which significantly improves the dispersion and stability of nano-titanium dioxide in the coating and avoids the formation of nano-titanium dioxide aggregates. The UV protection performance of the aggregates will be greatly reduced or even not. The paint not only has the characteristics of excellent water resistance, alkali resistance and scrub resistance of acrylate polymer exterior wall paint, but also improves its hardness and anti-ultraviolet performance, prolongs the service life of the paint, and has a simple preparation method and low production cost. Low, conducive to industrial production.

Description

technical field [0001] The invention relates to an exterior wall coating, in particular to an anti-ultraviolet exterior wall coating and a preparation method thereof; it belongs to the technical field of material synthesis and coating preparation technology. Background technique [0002] Light, heat, water, oxygen, inorganic salts, organic solvents and pollutants in the environment are the main factors that promote the degradation of film-forming substances. Among these factors, solar ultraviolet radiation is the most important and most common factor leading to the degradation of film-forming substances. From the moment the exterior wall paint is used, it begins its irreversible degradation process. Therefore, it is necessary to enhance the anti-ultraviolet performance of exterior wall coatings. The simplest and most effective method is to add additives with anti-ultraviolet properties to exterior wall coatings, mainly organic ultraviolet shielding agents and inorganic ultr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/14C09D133/04C09D7/12
Inventor 张心亚汪春玲
Owner HEBEI CARPOLY PAINT CO LTD
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