阅读说明：本技术 一种防霉乳胶漆及其制备方法 (Mildew-proof emulsion paint and preparation method thereof ) 是由 柯林 于 2020-06-19 设计创作，主要内容包括：本发明涉及一种防霉乳胶漆及其制备方法,防霉乳胶漆包括有石墨烯和碳纳米管余料、碳纤维改性特氟龙、碳纤维改性氧丙氧基丙基三甲氧基硅烷、纳米银纤维改性纤维素、纳米银纤维改性壳聚糖、天然彩砂、硅基改性纯丙烯酸树脂、天然乳胶、分散剂、聚环氧氯丙烷、二硅酸铅、硝酸银晶须、固化剂、消泡剂、成膜助剂、硅基改性聚氨酯、甘油水混物；本发明防霉乳胶漆通过添加纳米银纤维改性纤维素、纳米银纤维改性壳聚糖和硝酸银晶须对防霉乳胶漆机型改性,使其具有优良的防霉抗菌作用,能够显著提升乳胶漆的杀菌杀霉作用,而且与乳胶漆的相容性更好；本发明的乳胶漆不仅提升了防霉抗菌效果,提升与乳胶漆有机物的结合能力,还能显著的改善耐候性。(The invention relates to a mildew-proof emulsion paint and a preparation method thereof, wherein the mildew-proof emulsion paint comprises graphene and carbon nano tube excess materials, carbon fiber modified Teflon, carbon fiber modified oxypropyltrimethoxysilane, nano silver fiber modified cellulose, nano silver fiber modified chitosan, natural colored sand, silicon-based modified pure acrylic resin, natural latex, a dispersing agent, polyepichlorohydrin, lead disilicate, silver nitrate whiskers, a curing agent, a defoaming agent, a film-forming auxiliary agent, silicon-based modified polyurethane and a glycerol water mixture; according to the mildew-proof emulsion paint, the model of the mildew-proof emulsion paint is modified by adding the nano-silver fiber modified cellulose, the nano-silver fiber modified chitosan and the silver nitrate whisker, so that the mildew-proof emulsion paint has an excellent mildew-proof antibacterial effect, the sterilization and mildew-proof effects of the emulsion paint can be remarkably improved, and the compatibility with the emulsion paint is better; the emulsion paint disclosed by the invention not only improves the mildew-proof and antibacterial effects and the binding capacity with organic matters of the emulsion paint, but also can obviously improve the weather resistance.)

1. The mildew-proof emulsion paint is characterized in that: the mildew-proof emulsion paint comprises the following raw materials in parts by weight: 8-15 parts of graphene and carbon nanotube remainder, 15-20 parts of carbon fiber modified Teflon, 15-25 parts of carbon fiber modified oxypropyltrimethoxysilane, 10-18 parts of nano silver fiber modified cellulose, 10-15 parts of nano silver fiber modified chitosan, 15-20 parts of natural colored sand, 30-50 parts of silicon-based modified pure acrylic resin, 20-30 parts of natural latex, 2-4 parts of a dispersing agent, 10-15 parts of polyepichlorohydrin, 5-13 parts of lead disilicate, 3-8 parts of silver nitrate whisker, 2-3 parts of a curing agent, 2-5 parts of a defoaming agent, 2-4 parts of a film forming aid, 30-50 parts of silicon-based modified polyurethane and 40-80 parts of a glycerol water mixture.

2. The mildew-proof latex paint of claim 1, wherein: the mildew-proof emulsion paint comprises the following raw materials in parts by weight: 10 parts of graphene and carbon nanotube residual materials, 20 parts of carbon fiber modified Teflon, 15 parts of carbon fiber modified oxypropyltrimethoxysilane, 10 parts of nano silver fiber modified cellulose, 10 parts of nano silver fiber modified chitosan, 20 parts of natural colored sand, 50 parts of silicon-based modified pure acrylic resin, 20 parts of natural latex, 4 parts of a dispersing agent, 10 parts of polyepichlorohydrin, 5 parts of lead disilicate, 5 parts of silver nitrate whisker, 3 parts of a curing agent, 2 parts of a defoaming agent, 2 parts of a film forming auxiliary agent, 50 parts of silicon-based modified polyurethane and 60 parts of a glycerol water mixture.

3. The mildew-proof latex paint of claim 1, wherein: the natural color sand in the mildew-proof emulsion paint has the same color as the pigment, and the pigment is one of titanium dioxide, phthalocyanine blue, malachite green, indigo, azo yellow, alizarin red, natural fish scale powder, pigment brown (PBr) and Pigment Violet (PV).

4. The mildew-proof latex paint of claim 1, wherein: the defoaming agent in the mildew-proof emulsion paint is one or a mixture of more of an oil-based defoaming agent, a polyether defoaming agent, an amide defoaming agent, a fatty acid defoaming agent and an organic silicon defoaming agent.

5. The mildew-proof latex paint of claim 1, wherein: the dispersing agent in the mildew-proof emulsion paint is one or a mixture of more of ethylene-vinyl acetate copolymer, oxidized polyethylene wax, sodium dodecyl sulfate, ethylene-based bis-stearamide, tristearin and fatty acid polyethylene glycol ester.

6. The mildew-proof latex paint of claim 1, wherein: the curing agent in the mildew-proof emulsion paint is one or a mixture of more of vinyl triamine, diaminodiphenylmethane, m-aminomethamine, trimethyl hexamethylene diamine, diaminocyclohexane and aminoethyl piperazine.

7. The mildew-proof latex paint of claim 1, wherein: the film forming auxiliary agent in the mildew-proof emulsion paint is one or a mixture of more of propylene glycol butyl ether, propylene glycol methyl ether acetate, alcohol ester dodeca, propylene glycol phenyl ether, benzyl alcohol, hexanediol and hexanediol diacetate.

8. A process for preparing a mould proof latex paint as claimed in any one of claims 1 to 7, characterized in that: the preparation method comprises the following specific steps:

1) placing carbon fiber modified teflon, carbon fiber modified oxypropyltrimethoxysilane, nano-silver fiber modified cellulose, nano-silver fiber modified chitosan, silicon-based modified pure acrylic resin, natural latex, polyepichlorohydrin and silicon-based modified polyurethane in a stirring kettle, stirring at medium speed at the temperature of 60-80 ℃, adding 40-60% of glycerol water mixture after stirring until the mixture is uniformly mixed, stirring uniformly again, and cooling to 50-60 ℃ after stirring to obtain a mixture A;

2) placing the graphene, the carbon nano tube residual material, the natural colored sand, the dispersing agent, the lead disilicate, the silver nitrate whisker, the curing agent, the defoaming agent and the film forming auxiliary agent in a stirring kettle, heating to 70-90 ℃, rapidly stirring, adding the rest glycerin-water mixture while stirring, stirring until the mixture is uniformly mixed, and cooling to 50-60 ℃ after stirring to obtain a mixture B;

3) rapidly stirring the mixture A, adding the mixture B at a constant speed while stirring, controlling the temperature to be 60-90 ℃, continuously stirring until the color of the mixture does not change along with stirring, placing an ultrasonic generator in the mixture, performing ultrasonic vibration for 30-150 min, and naturally cooling to room temperature to obtain the mildew-proof emulsion paint.

9. The method for preparing the mildewproof latex paint according to claim 8, wherein the steps of: in the preparation method of the mildew-proof emulsion paint, in the step 1, the stirring speed of medium-speed stirring in the stirring kettle is 500-1000 r/min, and the stirring is carried out for 10-15 min and then the interval is 1 min.

10. The method for preparing the mildewproof latex paint according to claim 8, wherein the steps of: in the preparation method of the mildew-proof emulsion paint, in the step 2 or 3, the stirring speed of rapid stirring in the stirring kettle is 1000-1500 r/min, and the stirring is carried out for 10-15 min at an interval of 1 min.

Technical Field

The invention relates to the technical field of building materials, in particular to a waterproof really stone paint and a preparation method thereof.

Background

Emulsion paints are water-based coatings, the paint film performance of which is much better than that of solvent-based coatings, and the organic solvent which accounts for half of the solvent-based coatings is replaced by water, so that the toxicity problem of the organic solvent is basically and completely solved by the emulsion paints. The emulsion paint is prepared by using polymer aqueous solution as a film substance, contains a small amount of emulsifier and a trace amount of unpolymerized free monomer besides different types of safe and harmless polymers or polymers, wherein the free monomer is a small molecular substance capable of volatilizing, so that the toxicity problem of different degrees exists, the concentration of the free monomer of the environment-friendly paint is controlled to be below 0.1 percent, and the more dosage of the auxiliary agent is 2 to 3 percent; the small amount is only between 0.05% and 0.1%.

At present, the common bactericidal latex paint mostly adopts a method of adding an organic bactericide into the latex paint. The general bactericide is toxic, unsafe, easy to dissolve out and poor in durability, and cannot bear thousands of repeated washing and disinfection, so that the application requirement is difficult to achieve. Compared with organic antibacterial agents, inorganic antibacterial agents have the advantages of heat resistance, durability, broad-spectrum antibacterial, no drug resistance, safety, no secondary pollution and the like, and are receiving more and more attention. Among them, development and application of inorganic antibacterial agents containing inorganic substances such as antibacterial metals of silver, copper, zinc, etc. have become mature. The zeolite has unique adsorption and selective ion exchange properties due to the fact that the internal structure of the zeolite contains holes and pipelines and is unbalanced in electrical property. The zeolite antibacterial agent prepared by taking zeolite as a carrier and introducing the metal ions through ion exchange is one of important types; the bactericide is one of the applications of the bactericide when being blended into the paint to prepare the bactericidal paint. The nano particles have the characteristics which are not possessed by the conventional fine powder, and when the nano particles are applied to the emulsion paint, the special magnetic, optical and electrical properties of the nano particles and the characteristics of high strength, high toughness, wear resistance, excellent stability and the like of the nano particles still exist at high temperature, so that a new way for developing high-performance emulsion paint meeting the environmental protection requirement can be provided.

However, when the inorganic bactericide is used in the emulsion paint, the problems of short sterilization time, easy dissolution and poor durability of the emulsion paint can be caused due to poor compatibility between the inorganic bactericide and a polymer matrix, and the common emulsion paint has poor water resistance, easy whitening after water absorption and short service life.

Disclosure of Invention

The invention aims to design a waterproof stone-like paint and a preparation method thereof, and aims to solve the problems that the common stone-like paint is not resistant to rain impact, is whitened after absorbing water, is easy to be dusty, and has short service life and poor aesthetic effect.

In order to realize the purpose of the invention, the adopted technical scheme is as follows:

the mildew-proof emulsion paint comprises the following raw materials in parts by weight: 8-15 parts of graphene and carbon nanotube remainder, 15-20 parts of carbon fiber modified Teflon, 15-25 parts of carbon fiber modified oxypropyltrimethoxysilane, 10-18 parts of nano silver fiber modified cellulose, 10-15 parts of nano silver fiber modified chitosan, 15-20 parts of natural colored sand, 30-50 parts of silicon-based modified pure acrylic resin, 20-30 parts of natural latex, 2-4 parts of a dispersing agent, 10-15 parts of polyepichlorohydrin, 5-13 parts of lead disilicate, 3-8 parts of silver nitrate whisker, 2-3 parts of a curing agent, 2-5 parts of a defoaming agent, 2-4 parts of a film forming aid, 30-50 parts of silicon-based modified polyurethane and 40-80 parts of a glycerol water mixture.

As a preferred technical scheme, the mildew-proof emulsion paint comprises the following raw materials in parts by weight: 10 parts of graphene and carbon nanotube residual materials, 20 parts of carbon fiber modified Teflon, 15 parts of carbon fiber modified oxypropyltrimethoxysilane, 10 parts of nano silver fiber modified cellulose, 10 parts of nano silver fiber modified chitosan, 20 parts of natural colored sand, 50 parts of silicon-based modified pure acrylic resin, 20 parts of natural latex, 4 parts of a dispersing agent, 10 parts of polyepichlorohydrin, 5 parts of lead disilicate, 5 parts of silver nitrate whisker, 3 parts of a curing agent, 2 parts of a defoaming agent, 2 parts of a film forming auxiliary agent, 50 parts of silicon-based modified polyurethane and 60 parts of a glycerol water mixture.

Preferably, the natural color sand in the mildew-proof emulsion paint has the same color as the pigment, and the pigment is one of titanium dioxide, phthalocyanine blue, malachite green, indigo, azoyellow, alizarin red, natural fish scale powder, pigment brown (PBr) and Pigment Violet (PV).

Preferably, the defoaming agent in the mildew-proof emulsion paint is a mixture of one or more of an oil-based defoaming agent, a polyether type defoaming agent, an amide type defoaming agent, a fatty acid type defoaming agent and a silicone defoaming agent.

Preferably, the dispersing agent in the mildew-proof emulsion paint is one or a mixture of more of ethylene-vinyl acetate copolymer, oxidized polyethylene wax, sodium dodecyl sulfate, ethylene bis stearamide, tristearin and fatty acid polyethylene glycol ester.

Preferably, the curing agent in the mildew-proof emulsion paint is one or a mixture of more of vinyl triamine, diaminodiphenylmethane, m-aminomethane, trimethyl hexamethylene diamine, diaminocyclohexane and aminoethyl piperazine.

Preferably, the film forming auxiliary agent in the mildew-proof emulsion paint is one or a mixture of more of propylene glycol butyl ether, propylene glycol methyl ether acetate, alcohol ester dodeca, propylene glycol phenyl ether, benzyl alcohol, hexanediol and hexanediol diacetate.

The preparation method of the mildew-proof emulsion paint comprises the following specific steps:

1) placing carbon fiber modified teflon, carbon fiber modified oxypropyltrimethoxysilane, nano-silver fiber modified cellulose, nano-silver fiber modified chitosan, silicon-based modified pure acrylic resin, natural latex, polyepichlorohydrin and silicon-based modified polyurethane in a stirring kettle, stirring at medium speed at the temperature of 60-80 ℃, adding 40-60% of glycerol water mixture after stirring until the mixture is uniformly mixed, stirring uniformly again, and cooling to 50-60 ℃ after stirring to obtain a mixture A;

2) placing the graphene, the carbon nano tube residual material, the natural colored sand, the dispersing agent, the lead disilicate, the silver nitrate whisker, the curing agent, the defoaming agent and the film forming auxiliary agent in a stirring kettle, heating to 70-90 ℃, rapidly stirring, adding the rest glycerin-water mixture while stirring, stirring until the mixture is uniformly mixed, and cooling to 50-60 ℃ after stirring to obtain a mixture B;

3) rapidly stirring the mixture A, adding the mixture B at a constant speed while stirring, controlling the temperature to be 60-90 ℃, continuously stirring until the color of the mixture does not change along with stirring, placing an ultrasonic generator in the mixture, performing ultrasonic vibration for 30-150 min, and naturally cooling to room temperature to obtain the mildew-proof emulsion paint.

Further, in the preparation method of the mildew-proof emulsion paint, in the step 1, the stirring speed of medium-speed stirring in the stirring kettle is 500-1000 r/min, and the stirring is carried out for 10-15 min and then the interval is 1 min.

Further, in the preparation method of the mildew-proof emulsion paint, in the step 2 or 3, the stirring speed of rapid stirring in the stirring kettle is 1000-1500 r/min, and the stirring is carried out for 10-15 min and then the interval is 1 min.

The invention has the beneficial effects that: according to the mildew-proof emulsion paint, the model of the mildew-proof emulsion paint is modified by adding the nano-silver fiber modified cellulose, the nano-silver fiber modified chitosan and the silver nitrate whisker, so that the mildew-proof emulsion paint has an excellent mildew-proof antibacterial effect, the sterilization and mildew-proof effects of the emulsion paint can be remarkably improved, and the compatibility with the emulsion paint is better; the water resistance of the emulsion paint is improved by adding the carbon fiber modified Teflon and the carbon fiber modified oxypropyltrimethoxysilane, and the adsorption effect of the emulsion paint on water molecules is reduced; the characteristics of the emulsion paint are improved on the whole by adding nano materials such as graphene, carbon nanotube excess materials and the like, the heat resistance, alkali resistance and acid resistance of the emulsion paint are improved, and the water resistance of the emulsion paint is improved by carrying out silicon-based modification on acrylic resin and polyurethane; the emulsion paint disclosed by the invention not only improves the mildew-proof and antibacterial effects and the binding capacity with organic matters of the emulsion paint, but also can obviously improve the weather resistance.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.