A kind of high-strength and high-toughness water-based antifouling metal baking paint and preparation method thereof

A metal baking paint, water toughness technology, used in antifouling/underwater coatings, biocide-containing paints, coatings, etc. The effect of bonding density, reducing surface tension and friction coefficient, and improving substrate wetting

Active Publication Date: 2021-08-03
INST OF CHEM ENG GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when preparing polyurethane acrylate emulsions, before adding hydroxyl-containing acrylate monomers to end-block polyurethane prepolymers, the amino-terminated chain extension and emulsification processes are generally not carried out, resulting in a generally small molecular weight of the polyurethane part and insufficient mechanical strength. , water resistance is not enough
At the same time, the synthesis of polyurethane prepolymers generally uses solvents such as isocyanate and acetone that are highly toxic to the human body and the environment, which can easily cause a series of environmental problems and endanger human health.

Method used

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  • A kind of high-strength and high-toughness water-based antifouling metal baking paint and preparation method thereof
  • A kind of high-strength and high-toughness water-based antifouling metal baking paint and preparation method thereof
  • A kind of high-strength and high-toughness water-based antifouling metal baking paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The high-strength and high-toughness water-based antifouling type metal baking varnish of embodiment 1, calculated by mass percentage, this water-based metal baking varnish comprises 50% epoxy-hyperbranched organosilicon co-modified acrylic polyurethane resin, 7% P2100 water-based polyester resin, 2% of saturated polyester polyol (Mn=300), 5% of CYMEL 327 amino resin, 0.5% of YX908 epoxy phosphate, 0.3% of BYK333, 0.5% of ethylene glycol tert-butyl ether, 3% of N,N-dimethylethanolamine, 0.3% blocked p-toluenesulfonic acid catalyst, 0.5% benzotriazole, 0.2% organic silicon defoamer CD68 and the rest of water.

[0062] The above raw materials are mixed and uniformly dispersed to prepare a high-strength and high-toughness water-based anti-fouling metal baking varnish with a solid content of 41.2 wt%.

[0063] In this example, epoxy-hyperbranched silicone co-modified acrylic polyurethane resin is prepared according to the following steps:

[0064] S1: In a four-neck flask ...

Embodiment 2

[0067] The high-strength and high-toughness water-based antifouling type metal baking varnish of embodiment 2, calculated by mass percentage, this water-based metal baking varnish comprises 40% epoxy-hyperbranched organosilicon co-modified acrylic polyurethane resin, 5% P2200 water-based polyester resin, 5% saturated polyester polyol (Mn=500), 10% CYMEL 325 amino resin, 1% YX909 epoxy phosphate, 0.5% BYK307, 2% ethylene glycol tert-butyl ether, 2% 2-amino-2-methyl-propanol, 0.5% blocked dodecylbenzenesulfonic acid catalyst, 0.3% benzotriazole, 0.3% organosilicon defoamer CD68 and the rest water.

[0068] The above raw materials are mixed and uniformly dispersed to prepare a high-strength and high-toughness water-based anti-fouling metal baking paint with a solid content of 44.2 wt%.

[0069] In this example, epoxy-hyperbranched silicone co-modified acrylic polyurethane resin is prepared according to the following steps:

[0070]S1: In a four-neck flask equipped with a condens...

Embodiment 3

[0073] The high-strength and high-toughness water-based anti-fouling metal baking varnish of embodiment 3, calculated by mass percentage, this water-based metal baking varnish includes 30% epoxy-hyperbranched organic silicon co-modified acrylic polyurethane resin, 10% P2100 water-based polyester resin, 8% of saturated polyester polyol (Mn=800), 8% of CYMEL 328 amino resin, 1% of YX909 epoxy phosphate, 0.5% of vinyl tris (β-methoxyethoxy) silane coupling Agent, 0.1% BYK301, 5% ethylene glycol tert-butyl ether, 0.5% triethylamine, 1% blocked dinonyl naphthalene disulfonic acid catalyst, 0.1% benzotriazole, 0.5% organic Silicon defoamer CD68 and the balance of water.

[0074] The above raw materials are mixed and uniformly dispersed to prepare a high-strength and high-toughness water-based antifouling metal baking paint with a solid content of 35.9 wt%.

[0075] In this example, epoxy-hyperbranched silicone co-modified acrylic polyurethane resin is prepared according to the foll...

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Abstract

The invention discloses a high-strength and high-toughness water-based antifouling metal baking varnish and a preparation method thereof. The invention discloses an epoxy-hyperbranched silicone co-modified acrylic polyurethane resin and a preparation method thereof. The high-strength and high-toughness water-based antifouling metal baking varnish disclosed by the present invention is composed of the following raw materials: epoxy-hyperbranched organic silicon co-modified acrylic polyurethane resin, polyester resin, saturated polyester polyol, crosslinking agent , adhesion promoter, wetting and leveling agent, ethylene glycol tert-butyl ether, neutralizer, catalyst, anti-flash rust agent, defoamer and the balance of water. At the same time, a preparation method of the high-strength and high-toughness water-based antifouling metal baking varnish is also disclosed. The water-based antifouling metal baking varnish disclosed by the invention has excellent properties such as high hardness, high flexibility, water resistance, chemical resistance, oil resistance, abrasion resistance, weather resistance, and salt spray resistance, which greatly improves the water-based metal baking varnish. Paint film performance and application range.

Description

technical field [0001] The invention relates to a high-strength and high-toughness water-based antifouling metal baking paint and a preparation method thereof, belonging to the technical field of water-based paints. Background technique [0002] At this stage, solvent-based baking varnishes are mainly used for metal coatings such as home appliances, household appliances, aluminum coils, and automobiles in my country, causing a series of problems such as air pollution, occupational health, and fire hazards. Water-based metal baking paint can greatly reduce VOC emissions, and has the advantages of safety, environmental protection, energy saving and carbon emission reduction. It is the main development direction of metal baking paint. At this stage, waterborne acrylic metal baking varnishes generally have a series of problems such as low hardness (pencil hardness ≤ 2H), poor flexibility (T bend ≥ 2T), poor adhesion, poor water resistance and solvent resistance, flash rust and o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/10C08F220/18C08F230/08C09D151/08C09D5/16C09D7/20C09D7/65C09D7/63
Inventor 余龙飞贾康乐郑小珊陈佳志韩从辉
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
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