Environment-friendly water-based alkyd resin coating

Abstract

The invention discloses an environment-friendly water-based alkyd resin coating and belongs to the technical field of water-based alkyd resin coatings, water-based alkyd resin and water-based amino resin are mixed according to different proportions to serve as a film forming matter, the product cost is successfully reduced, meanwhile, the environment-friendly water-based alkyd resin coating has the advantages of being low in VOC value and resistant to adhesion, the coating is good in fullness, high in hardness and good in toughness, and the water-based alkyd resin and water-based amino resin are mixed according to different proportions to serve as the film forming matter. The waterproof and scratch-resistant properties are good; 2, 4, 6-tri (dimethylaminomethyl) phenol and trimethylolpropane trimethacrylate can effectively control the moderate reaction degree of the water-based amino resin and the water-based alkyd resin and the moderate molecular weight of a cross-linked product, so that the water-based alkyd resin has relatively good toughness on the premise of relatively high hardness, a coating film does not crack even under the impact of external force, the toughness is extremely good, and the service life of the water-based alkyd resin is prolonged. And the cured film has excellent mechanical properties.

Description

Technical Field

[0001] The invention belongs to the technical field of polyurethane paints, and in particular relates to an environmentally friendly water-based alkyd resin paint. Background Art

[0002] Paint is an indispensable material for national production and various economic sectors. It is widely used in the decoration of buildings and industrial products, as well as the anti-corrosion coating protection of various hardware and vehicles.

[0003] Alkyd resins account for a considerable proportion in the coatings field. They have the advantages of cheap and easy-to-obtain raw materials, good paint film adhesion, brightness, fullness, and good pigment wetting properties.

[0004] Alkyd resin coatings have the advantages of cheap and readily available raw materials, good coating adhesion, brightness, fullness, good pigment wetting properties, and good workability. They have always occupied a considerable proportion in the field of traditional coatings. However, traditional alkyd resin coatings contain a large amount of organic solvents, and organic solvents are often added for dilution during use. These organic solvents evaporate into the atmosphere during construction, causing serious impacts on the human body and the ecological environment. In addition, alkyd resin coatings have poor hardness, water resistance, and corrosion resistance, and need to be modified.

[0005] Traditional alkyd resin coatings are mostly solvent-based and contain a large amount of organic solvents. These organic solvents evaporate into the atmosphere during the construction process, which has a serious impact on the human body and the ecological environment. With the improvement of people's environmental awareness and the introduction of various regulations in various countries to restrict VOC (Volatile Organic Compound) and HAPS (Hazardous Air Pollutants), the water-based nature of alkyd resins is of great significance. The development of environmentally friendly water-based alkyd resins can not only reduce the use of organic solvents and alleviate environmental pollution, but also bring huge economic and social benefits.

[0006] Therefore, developing an environmentally friendly water-based alkyd resin coating is an urgent problem to be solved. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide an environmentally friendly water-based alkyd resin coating in view of the deficiencies of the background technology.

[0008] The present invention adopts the following technical solutions to solve the above technical problems:

[0009] The invention discloses an environmentally friendly water-based alkyd resin coating. The raw materials thereof are calculated by weight: 70-85 parts of water-based modified alkyd resin, 10-25 parts of water-based epoxy resin, 60-75 parts of water-based amino resin, 2-9 parts of environmentally friendly pigment, 8-30 parts of deionized water, 3-8 parts of defoamer, 3-6 parts of wetting agent, 6-14 parts of masterbatch, 8-14 parts of castor fiber, 12-22 parts of asbestos fiber, 12-18 parts of fly ash, 14-22 parts of quartz sand, 6-8 parts of zinc oxide, 100-240 parts of water, 150-200 parts of mixed materials, 30-50 parts of polyethylene glycol, 4-8 parts of 2,4,6-tris(dimethylaminomethyl)phenol, 2-6 parts of trimethylolpropane trimethacrylate, 2-10 parts of antibacterial agent and 3-8 parts of mildewproof agent.

[0010] As a further preferred embodiment of the environmentally friendly water-based alkyd resin coating of the present invention, the water-based modified alkyd resin includes one or more of water-based alkyd resin, water-based modified alkyd resin, styrene-acrylic copolymer, water-based additive resin emulsion, and water-based acrylic modified resin.

[0011] As a further preferred embodiment of the environmentally friendly water-based alkyd resin coating of the present invention, the defoamer is one or more of silicone oil, polyethers, higher alcohols, mineral oil, and vegetable oil.

[0012] As a further preferred embodiment of the environmentally friendly water-based alkyd resin coating of the present invention, the environmentally friendly pigment includes one or more of coated rutile titanium dioxide, talcum powder, calcium carbonate, organic yellow, titanium blue, titanium green, and organic red.

[0013] As a further preferred embodiment of the environmentally friendly water-based alkyd resin coating of the present invention, the wetting agent is one or more of ethanol, propylene glycol, glycerol, dimethyl sulfoxide, polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, and polyoxyethylene polyoxypropylene block copolymer.

[0014] As a further preferred embodiment of the environmentally friendly water-based alkyd resin coating of the present invention, the deionized water is pure water from which impurities in ionic form have been removed.

[0015] As a further preferred embodiment of the environmentally friendly water-based alkyd resin coating of the present invention, the additives include one or more of dimethylethanolamine, polyether-modified polysiloxane, polymer copolymer containing pigment affinity groups, acrylic copolymer solution, alkanolamine of multifunctional copolymer, ionic acrylic acid solution, organic-modified sheet silicate, blocked p-toluenesulfonic acid, polyether-modified silicone, nano-scale aluminum oxide dispersion, and cerium oxide nanoparticle dispersion.

[0016] As a further preferred embodiment of the environmentally friendly water-based alkyd resin coating of the present invention, the water-based modified alkyd resin has a solid content of 40-50%, a viscosity of 220-250 Pa.s, and an acid value of 60-80 mgKOH / g.

[0017] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0018] 1. The environmentally friendly water-based alkyd resin coating of the present invention adopts water-based alkyd resin and water-based amino resin mixed in different proportions as film-forming substances. While successfully reducing product costs, it also has the characteristics of low VOC value and anti-adhesion, good coating fullness, high hardness, good toughness, good waterproof and scratch resistance; and 2,4,6-tris(dimethylaminomethyl)phenol and trimethylolpropane trimethacrylate can effectively control the reaction degree of water-based amino resin and water-based alkyd resin to be moderate, and the molecular weight of the cross-linked product is moderate, which promotes the present invention to have good toughness under the premise of higher hardness, and the coating film will not crack even under external force impact, and the toughness is excellent, and the mechanical properties after curing and film formation are excellent.

[0019] 2. The water-based alkyd resin coating of the present invention has good storage stability, and the paint film prepared therefrom has good mechanical properties; the new preparation method of the present invention shortens the reaction time and reduces production energy consumption. The product uses water as a diluent, is non-toxic, non-flammable, and has no pollution to the environment. It can be applied to general industrial paint, automobile topcoat, bicycle paint, etc. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below:

[0021] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] The invention discloses an environmentally friendly water-based alkyd resin coating. The raw materials thereof are calculated by weight: 70-85 parts of water-based modified alkyd resin, 10-25 parts of water-based epoxy resin, 60-75 parts of water-based amino resin, 2-9 parts of environmentally friendly pigment, 8-30 parts of deionized water, 3-8 parts of defoamer, 3-6 parts of wetting agent, 6-14 parts of masterbatch, 8-14 parts of castor fiber, 12-22 parts of asbestos fiber, 12-18 parts of fly ash, 14-22 parts of quartz sand, 6-8 parts of zinc oxide, 100-240 parts of water, 150-200 parts of mixed materials, 30-50 parts of polyethylene glycol, 4-8 parts of 2,4,6-tris(dimethylaminomethyl)phenol, 2-6 parts of trimethylolpropane trimethacrylate, 2-10 parts of antibacterial agent and 3-8 parts of mildewproof agent.

[0024] The water-based modified alkyd resin includes one or more of water-based alkyd resin, water-based modified alkyd resin, styrene-acrylic copolymer polymer, water-based additive type resin emulsion, and water-based acrylic modified resin.

[0025] The defoaming agent is one or more than two of silicone oil, polyethers, higher alcohols, mineral oil and vegetable oil.

[0026] The environmentally friendly pigment includes one or more of coated rutile titanium dioxide, talcum powder, calcium carbonate, organic yellow, titanium blue, titanium green, and organic red.

[0027] The wetting agent is one or more than two of ethanol, propylene glycol, glycerol, dimethyl sulfoxide, polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, and polyoxyethylene polyoxypropylene block copolymer.

[0028] The deionized water is pure water from which impurities in the form of ions have been removed.

[0029] The additives include one or more of dimethylethanolamine, polyether-modified polysiloxane, polymer copolymers containing pigment affinity groups, acrylic copolymer solutions, alkanolamines of multifunctional copolymers, ionic acrylic acid solutions, organic-modified sheet silicates, blocked p-toluenesulfonic acid, polyether-modified silicones, nano-scale aluminum oxide dispersions, and cerium oxide nanoparticle dispersions.

[0030] The water-based modified alkyd resin has a solid content of 40-50%, a viscosity of 220-250 Pa.s, and an acid value of 60-80 mgKOH / g.

[0031] A method for preparing an environmentally friendly water-based alkyd resin coating comprises the following steps:

[0032] Step 1, according to the mass fractions, water-based modified alkyd resin, water-based epoxy resin, water-based amino resin, environmentally friendly pigment, deionized water, defoaming agent, and wetting agent are stirred uniformly to obtain a mixed material;

[0033] Step 2, according to the mass parts, the masterbatch, castor fiber, asbestos fiber, fly ash, quartz sand, zinc oxide and water are stirred evenly;

[0034] Step 3, adding the composite material, polyethylene glycol, 2,4,6-tris(dimethylaminomethyl)phenol, trimethylolpropane trimethacrylate, antibacterial agent and mildewproof agent according to the mass proportions and continuing to stir to obtain an environmentally friendly water-based alkyd resin coating.

[0035] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An environmentally friendly water-based alkyd resin coating, characterized in that: The raw materials are calculated by weight: 70-85 parts of water-based modified alkyd resin, 10-25 parts of water-based epoxy resin, 60-75 parts of water-based amino resin, 2-9 parts of environmentally friendly pigment, 8-30 parts of deionized water, 3-8 parts of defoaming agent, 3-6 parts of wetting agent, 6-14 parts of masterbatch, 8-14 parts of castor fiber, 12-22 parts of asbestos fiber, 12-18 parts of fly ash, 14-22 parts of quartz sand, 6-8 parts of zinc oxide, 100-240 parts of water, 150-200 parts of mixed materials, 30-50 parts of polyethylene glycol, 4-8 parts of 2,4,6-tris(dimethylaminomethyl)phenol, 2-6 parts of trimethylolpropane trimethacrylate, 2-10 parts of antibacterial agent and 3-8 parts of mildewproof agent.

2. An environmentally friendly water-based alkyd resin coating according to claim 1, characterized in that: The water-based modified alkyd resin includes one or more of water-based alkyd resin, water-based modified alkyd resin, styrene-acrylic copolymer polymer, water-based additive type resin emulsion, and water-based acrylic modified resin.

3. An environmentally friendly water-based alkyd resin coating according to claim 1, characterized in that: The defoaming agent is one or more than two of silicone oil, polyethers, higher alcohols, mineral oil and vegetable oil.

4. An environmentally friendly water-based alkyd resin coating according to claim 1, characterized in that: The environmentally friendly pigment includes one or more of coated rutile titanium dioxide, talcum powder, calcium carbonate, organic yellow, titanium blue, titanium green, and organic red.

5. An environmentally friendly water-based alkyd resin coating according to claim 1, characterized in that: The wetting agent is one or more than two of ethanol, propylene glycol, glycerol, dimethyl sulfoxide, polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, and polyoxyethylene polyoxypropylene block copolymer.

6. An environmentally friendly water-based alkyd resin coating according to claim 1, characterized in that: The deionized water is pure water from which impurities in the form of ions have been removed.

7. The environmentally friendly water-based alkyd resin coating according to claim 1, characterized in that: The additives include one or more of dimethylethanolamine, polyether-modified polysiloxane, polymer copolymers containing pigment affinity groups, acrylic copolymer solutions, alkanolamines of multifunctional copolymers, ionic acrylic acid solutions, organic-modified sheet silicates, blocked p-toluenesulfonic acid, polyether-modified silicones, nano-scale aluminum oxide dispersions, and cerium oxide nanoparticle dispersions.

8. The environmentally friendly water-based alkyd resin coating according to claim 1, characterized in that: The water-based modified alkyd resin has a solid content of 40-50%, a viscosity of 220-250 Pa.s, and an acid value of 60-80 mgKOH / g.