阅读说明：本技术 一种水性含氟涂料及其制备方法 (Water-based fluorine-containing coating and preparation method thereof ) 是由 刘倩 童飞 李小平 张惠明 于 2021-07-28 设计创作，主要内容包括：本发明公开了一种水性含氟涂料,依照重量百分比计,水性含氟涂料主要原料分别为：含氟丙烯酸酯单体、非含氟单体、六氟丙酮、环氯乙烷、PH调节剂、引发剂、流平剂、分散剂、所需添加剂有：PH调节剂、流平剂、引发剂和分散剂,该水性含氟涂料,使得产品质量稳定,制作方便,水性含氟涂料具有含氟材料优良的耐候、耐污和耐腐蚀等性能,是以水性氟乳液为成膜物质,以水作为溶剂,同时具有无毒无味、低VOC排放、安全不燃性等水性涂料的特性。(The invention discloses a water-based fluorine-containing paint which comprises the following main raw materials in percentage by weight: the fluorine-containing acrylate monomer, the non-fluorine-containing monomer, hexafluoroacetone, cyclohexane, a pH regulator, an initiator, a leveling agent, a dispersing agent and required additives are as follows: the water-based fluorine-containing paint has the advantages of stable product quality, convenient preparation, excellent weather resistance, stain resistance, corrosion resistance and the like of a fluorine-containing material, takes water-based fluorine emulsion as a film-forming substance and water as a solvent, and has the characteristics of no toxicity, no odor, low VOC (volatile organic compound) emission, safety, incombustibility and the like.)

1. The water-based fluorine-containing paint is characterized in that: according to the weight percentage, the water-based fluorine-containing paint comprises the following main raw materials: 15-28 parts by weight of a fluorine-containing acrylate monomer; 20-35 parts by weight of non-fluorine-containing monomer; 3-8 parts of hexafluoroacetone by weight; 2-5 parts of cyclo-chloroethane by weight; 1-5 parts of a pH regulator by weight; 1.5-3.5 parts by weight of an initiator; 2-4 parts of a leveling agent by weight; 5-8 parts of a dispersing agent by weight;

the required additives are: PH regulator, flatting agent, initiator and dispersant.

2. The aqueous fluorine-containing coating according to claim 1, characterized in that: the fluorine-containing acrylate monomer is hexafluorobutyl methacrylate and trifluoroethyl methacrylate, and the hexafluorobutyl methacrylate and the trifluoroethyl methacrylate are mostly used for coating, so that the weather resistance, the water resistance and the stain resistance of the coating are improved.

3. The aqueous fluorine-containing coating according to claim 1, characterized in that: the non-fluorine-containing monomer is vinyl versatate and diacetone vinyl amide, the vinyl versatate has excellent alkali resistance, ester groups on a side chain of a polymer are difficult to hydrolyze due to the steric effect of alkyl groups on carbon atoms, the alkali resistance of a coating is obviously improved, and the diacetone vinyl amide is often used as a curing agent for acrylic resin coatings, unsaturated polyester coatings and the like.

4. The aqueous fluorine-containing coating according to claim 1, characterized in that: the hexafluoroacetone and the chloroethane are copolymerized to obtain the high-temperature-resistant and corrosion-resistant coating and the adhesive.

5. The aqueous fluorine-containing coating according to claim 1, characterized in that: the production steps of the water-based fluorine-containing coating are as follows:

step 1: weighing a dispersing agent according to parts, adding the dispersing agent into water, uniformly stirring at the speed of 300-500r/min, and uniformly dispersing by ultrasonic to obtain slurry;

step 2: adding 15-28 parts of fluorine-containing acrylate monomer in a formula amount to the slurry prepared in the step (1) in batches; 3-8 parts of hexafluoroacetone; 2-5 parts of cyclic chloroethane, uniformly stirring and dispersing at the stirring speed of 480r/min and the low-speed dispersion speed of 10-25min, and sequentially adding 1-5 parts of a pH regulator, 1-3 parts of an initiator and 1-2 parts of a flatting agent to obtain a mixed material;

and step 3: adding 20-35 parts of non-fluorine-containing monomer in a formula amount into the mixture material in the step (2), uniformly stirring and curing to obtain the water-based fluorine-containing coating;

and 4, step 4: and (4) inspecting the water-based fluorine-containing coating obtained in the step (3), and curing the qualified water-based fluorine-containing coating for 20-35min to obtain the water-based fluorine-containing coating.

Technical Field

The invention relates to the technical field of water-based fluorine-containing coatings, in particular to a water-based fluorine-containing coating and a preparation method thereof.

Background

The fluorine-containing coating is a coating fluorine coating which takes fluorine resin as a main film forming substance, is also called as fluorocarbon coating, fluorocarbon paint and fluorine resin coating, and is a coating which takes fluorine resin as a film forming substance, has various particularly excellent performances such as weather resistance, heat resistance, low temperature resistance and chemical resistance, has unique non-adhesiveness and low friction, contains a large amount of organic volatile matters, has serious environmental pollution, and wastes resources and energy.

Because general coatings, epoxy resin furniture paints and polyurethane furniture paints contain benzene volatile matters and the like, the general coatings are gradually eliminated by the market, the coating industry in China is developing towards three directions of environmental protection, economy and high performance, low-pollution and high-solid or solvent-free coatings, water-based coatings and the like are intensively developed, and the water-based coatings have the advantages of no toxicity, no pollution, no stimulation, excellent coating performance, energy conservation, safe production and the like.

Therefore, it is necessary to design a water-based fluorine-containing coating and a preparation method thereof.

Disclosure of Invention

The invention aims to provide a water-based fluorine-containing coating and a preparation method thereof, which aim to solve the problem that the prior art contains a large amount of organic volatile matters and has serious environmental pollution.

In order to achieve the purpose, the invention provides the following technical scheme: the water-based fluorine-containing paint comprises the following main raw materials in percentage by weight: 15-28 parts by weight of a fluorine-containing acrylate monomer; 20-35 parts by weight of non-fluorine-containing monomer; 3-8 parts of hexafluoroacetone by weight; 2-5 parts of cyclo-chloroethane by weight; 1-5 parts of a pH regulator by weight; 1.5-3.5 parts by weight of an initiator; 2-4 parts of a leveling agent by weight; 5-8 parts of a dispersing agent by weight;

the required additives are: PH regulator, flatting agent, initiator and dispersant.

Preferably, the fluorine-containing acrylate monomer is hexafluorobutyl methacrylate and trifluoroethyl methacrylate, and the hexafluorobutyl methacrylate and the trifluoroethyl methacrylate are mostly used for coating, so that the weather resistance, the water resistance and the stain resistance of the coating are improved.

Preferably, the non-fluorine-containing monomer is vinyl versatate and diacetone vinyl amide, the vinyl versatate has excellent alkali resistance, ester groups on polymer side chains are difficult to hydrolyze due to the steric effect of alkyl groups on carbon atoms, the alkali resistance of the coating is obviously improved, and the diacetone vinyl amide is often used as a curing agent for acrylic resin coatings, unsaturated polyester coatings and the like.

Preferably, the hexafluoroacetone and the chloroethane are copolymerized to obtain the high-temperature-resistant and corrosion-resistant coating and adhesive.

Preferably, the production steps of the water-based fluorine-containing coating are as follows:

step 1: weighing a dispersing agent according to parts, adding the dispersing agent into water, uniformly stirring at the speed of 300-500r/min, and uniformly dispersing by ultrasonic to obtain slurry;

step 2: adding 15-28 parts of fluorine-containing acrylate monomer in a formula amount to the slurry prepared in the step (1) in batches; 3-8 parts of hexafluoroacetone; 2-5 parts of cyclic chloroethane, uniformly stirring and dispersing at the stirring speed of 480r/min and the low-speed dispersion speed of 10-25min, and sequentially adding 1-5 parts of a pH regulator, 1-3 parts of an initiator and 1-2 parts of a flatting agent to obtain a mixed material;

and step 3: adding 20-35 parts of non-fluorine-containing monomer in a formula amount into the mixture material in the step (2), uniformly stirring and curing to obtain the water-based fluorine-containing coating;

and 4, step 4: and (4) inspecting the water-based fluorine-containing coating obtained in the step (3), and curing the qualified water-based fluorine-containing coating for 20-35min to obtain the water-based fluorine-containing coating.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts reasonable raw material proportion, so that the product quality is stable, the preparation is convenient, the water-based fluorine-containing coating has excellent weather resistance, stain resistance, corrosion resistance and other performances of the fluorine-containing material, the water-based fluorine emulsion is taken as a film forming substance, water is taken as a solvent, and the water-based fluorine-containing coating has the characteristics of no toxicity, no odor, low VOC (volatile organic compound) emission, safety, incombustibility and the like.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that:

example 1:

step 1: weighing a dispersing agent according to parts, adding the dispersing agent into water, uniformly stirring at the speed of 300r/min, and uniformly dispersing by ultrasonic to obtain slurry;

step 2: adding 15 parts of fluorine-containing acrylate monomer in a formula amount to the slurry prepared in the step (1) in batches; 3 parts of hexafluoroacetone; 2 parts of cyclohexane, uniformly stirring and dispersing at a stirring speed of 280r/min for 10min at a low speed, and sequentially adding 1.5 parts of a pH regulator, 1.5 parts of an initiator and 1 part of a leveling agent to obtain a mixed material;

and step 3: adding 20 parts of non-fluorine-containing monomer in a formula amount into the mixture material in the step (2), uniformly stirring and curing to obtain the water-based fluorine-containing coating;

and 4, step 4: and (4) inspecting the water-based fluorine-containing coating obtained in the step (3), and curing the qualified water-based fluorine-containing coating for 20min to obtain the water-based fluorine-containing coating.

Example 2:

step 1: weighing a dispersing agent according to parts, adding the dispersing agent into water, uniformly stirring at the speed of 500r/min, and uniformly dispersing by ultrasonic to obtain slurry;

step 2: adding 28 parts of fluorine-containing acrylate monomer with the formula amount to the slurry prepared in the step (1) in batches; 8 parts of hexafluoroacetone; 5 parts of cyclohexane, uniformly stirring and dispersing at 480r/min and low-speed dispersion for 25min, and sequentially adding 5 parts of pH regulator, 3 parts of initiator and 2 parts of flatting agent to obtain a mixed material;

and step 3: adding 35 parts of non-fluorine-containing monomer in a formula amount into the mixture material in the step (2), uniformly stirring and curing to obtain the water-based fluorine-containing coating;

and 4, step 4: and (4) inspecting the water-based fluorine-containing coating obtained in the step (3), and curing the qualified water-based fluorine-containing coating for 35min to obtain the water-based fluorine-containing coating.

Example 3:

step 1: weighing a dispersing agent according to parts, adding the dispersing agent into water, uniformly stirring at the speed of 350r/min, and uniformly dispersing by ultrasonic to obtain slurry;

step 2: adding 20 parts of fluorine-containing acrylate monomer in formula amount to the slurry prepared in the step (1) in batches; 5 parts of hexafluoroacetone; 3 parts of cyclohexane, uniformly stirring and dispersing at a stirring speed of 350r/min for 15min, and sequentially adding 3 parts of a pH regulator, 2 parts of an initiator and 1.5 parts of a leveling agent to obtain a mixed material;

and step 3: adding 28 parts of non-fluorine-containing monomer in a formula amount into the mixture material in the step (2), uniformly stirring and curing to obtain the water-based fluorine-containing coating;

and 4, step 4: and (4) inspecting the water-based fluorine-containing coating obtained in the step (3), curing the qualified water-based fluorine-containing coating for 30min, and then using.

Example 4:

step 1: weighing a dispersing agent according to parts, adding the dispersing agent into water, uniformly stirring at the speed of 450r/min, and uniformly dispersing by ultrasonic to obtain slurry;

step 2: adding 25 parts of fluorine-containing acrylate monomer in a formula amount to the slurry prepared in the step (1) in batches; 6 parts of hexafluoroacetone; 4 parts of cyclohexane, uniformly stirring and dispersing at the stirring speed of 400r/min for 18min, and sequentially adding 4 parts of pH regulator, 2 parts of initiator and 2 parts of flatting agent to obtain a mixed material;

and step 3: adding 25 parts of non-fluorine-containing monomer in a formula amount into the mixture material in the step (2), uniformly stirring and curing to obtain the water-based fluorine-containing coating;

and 4, step 4: and (4) inspecting the water-based fluorine-containing coating obtained in the step (3), curing the qualified water-based fluorine-containing coating for 30min, and then using.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.