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Low-temperature-resistant and anti-cracking waterborne coating

A water-based coating, anti-cracking technology, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of low temperature resistance and crack resistance, etc., to increase mechanical properties and decorative properties, The effect of increasing mechanical properties and increasing low temperature resistance

Active Publication Date: 2017-04-26
滁州市瑞景园林股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complicated repair process and long construction period, it is best to complete the repair work at one time. In the low temperature environment in winter, in order to avoid multiple repairs in the later period, it is best to use water-based paint with good low temperature resistance and crack resistance. The low temperature resistance and crack resistance of water-based coatings used in the repair of ancient buildings are not very good. Therefore, it is necessary to provide a new coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A low-temperature-resistant and anti-cracking water-based paint, its raw materials include by weight: 90 parts of modified polyurethane emulsion, 30 parts of acrylic emulsion, 23 parts of pigment, 17 parts of filler, 5 parts of propylene glycol methyl ether acetate, dodecyl sulfonic acid 4 parts of sodium, 0.5 parts of leveling agent, 0.05 parts of polydimethylsiloxane, 0.06 parts of emulsified silicone oil, 0.5 parts of wetting agent, 0.7 parts of sodium carboxymethylcellulose, γ-methacryloxypropyl 1.4 parts of trimethoxysilane, 19 parts of water.

Embodiment 2

[0020] A low-temperature-resistant and anti-cracking water-based paint, its raw materials include by weight: 80 parts of modified polyurethane emulsion, 40 parts of acrylic emulsion, 20 parts of pigment, 20 parts of filler, 4 parts of propylene glycol methyl ether acetate, dodecyl sulfonic acid 5 parts of sodium, 0.4 parts of leveling agent, 0.06 parts of polydimethylsiloxane, 0.05 parts of emulsified silicone oil, 0.6 parts of wetting agent, 0.6 parts of sodium carboxymethylcellulose, γ-methacryloxypropyl 1.6 parts of trimethoxysilane, 18 parts of water;

[0021] Among them, in the preparation process of the modified polyurethane emulsion, N-methylpyrrolidone, 2,4-toluene diisocyanate, dimethylol propionic acid, hydroxyl-terminated polybutadiene, dilauric acid di Mix butyl tin, heat up, keep warm and stir, add modified montmorillonite, continue keep warm and stir, add 1,4-butanediol, keep keep warm and stir, then add hydroxyethyl methacrylate, keep keep warm and stir, then ad...

Embodiment 3

[0023] A low-temperature-resistant and anti-cracking water-based coating, its raw materials include by weight: 100 parts of modified polyurethane emulsion, 20 parts of acrylic emulsion, 25 parts of pigment, 15 parts of filler, 6 parts of propylene glycol methyl ether acetate, dodecyl sulfonic acid 3 parts of sodium, 0.6 parts of leveling agent, 0.04 parts of polydimethylsiloxane, 0.07 parts of emulsified silicone oil, 0.4 parts of wetting agent, 0.8 parts of sodium carboxymethylcellulose, γ-methacryloxypropyl 1.2 parts of trimethoxysilane, 20 parts of water;

[0024] Among them, the filler is composed of 800 mesh clay and 800 mesh diatomite, wherein the weight ratio of clay and diatomite is 3:2;

[0025] During the preparation of the modified polyurethane emulsion, N-methylpyrrolidone, 2,4-toluene diisocyanate, dimethylol propionic acid, hydroxyl-terminated polybutadiene, and dibutyltin dilaurate were mixed in a nitrogen atmosphere. Evenly, heat up to 60°C, keep stirring for ...

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Abstract

The invention discloses a low-temperature-resistant and anti-cracking waterborne coating. The coating is prepared from raw materials in parts by weight as follows: 80-100 parts of a modified polyurethane emulsion, 20-40 parts of an acrylic emulsion, 20-25 parts of pigments, 15-20 parts of filler, 4-6 parts of propylene glycol methyl ether acetate, 3-5 parts of sodium dodecyl sulfonate, 0.4-0.6 parts of a leveling agent, 0.04-0.06 parts of polydimethylsiloxane, 0.05-0.07 parts of emulsified silicone oil, 0.4-0.6 parts of a wetting agent, 0.6-0.8 parts of sodium carboxymethyl cellulose, 1.2-1.6 parts of gamma-methacryloxy propyl trimethoxyl silane and 18-20 parts of water. The waterborne coating has good low temperature resistance, high low-temperature toughness and good anti-cracking performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a low-temperature-resistant and crack-resistant water-based coating. Background technique [0002] Ancient buildings have extremely high historical, scientific and artistic value. If they are destroyed, they cannot exist anymore; and ancient buildings are old and will inevitably be damaged by nature or man-made. Therefore, we need to repair and maintain ancient buildings . Coatings are often used in the process of repairing ancient building rooms, door walls, inner and outer eaves, palms, floors, and walls. Due to the complicated repair process and long construction period, it is best to complete the repair work at one time. In the low temperature environment in winter, in order to avoid multiple repairs in the later period, it is best to use water-based paint with good low temperature resistance and crack resistance. The low temperature resistance and crack resistance of wate...

Claims

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Application Information

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IPC IPC(8): C09D175/16C09D133/00C09D5/08C09D7/12C08G18/69C08G18/67C08G18/65C08G18/34C08G18/32
CPCC08G18/672C08G18/69C08K2201/011C08K2201/014C08L2205/025C08L2205/035C09D5/08C09D7/61C09D7/62C09D7/63C09D7/65C09D7/70C09D175/16C08L33/00C08L83/04C08L1/286C08K13/06C08K9/06C08K7/06C08K3/346C08K3/34C08K5/42C08G18/0823C08G18/6588
Inventor 樊世新
Owner 滁州市瑞景园林股份有限公司
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