CN110903718A

CN110903718A - Water-based marking self-spraying paint and preparation method thereof

Info

Publication number: CN110903718A
Application number: CN201910998131.6A
Authority: CN
Inventors: 梁伟明
Original assignee: Guangdong Laiya New Chemical Technology Co Ltd
Current assignee: Guangdong Laiya New Chemical Technology Co Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-03-24

Abstract

The invention relates to the field of chemical industry and discloses a water-based marking self-spraying paint and a preparation method thereof. The water-based scribing self-spraying paint comprises a paint liquid and a propellant, wherein the mass ratio of the paint liquid to the propellant is as follows: 2-2.5: 1. the coating material liquid comprises the following components in percentage by weight: 25-30% of water-soluble resin, 0.5-1% of water-based acrylic block polymer type dispersing agent, 3.5-4% of pigment, 15-18% of talcum powder, 3.0-3.5% of ammonia water, 40-50% of organic alcohol, 2-2.4% of rheological additive and the balance of deionized water. The water-based line-marking self-spraying paint has mild smell, no stimulation, environment-friendly and low-toxicity material selection, convenient and quick construction and cleaning, and is very beneficial to the maintenance of human health and ecological environment. The water-based marking has excellent self-painting filling property, can be compatible with construction of different road surface conditions, and achieves the same full and clear marking effect.

Description

Water-based marking self-spraying paint and preparation method thereof

Technical Field

The invention relates to the field of chemical industry, in particular to a water-based marking self-spraying paint and a preparation method thereof.

Background

Self-spraying paint, i.e. aerosol paint, usually consists of an aerosol can, an aerosol valve, contents (paint) and a propellant, and in addition, stirring balls (marbles) which are placed in the aerosol can to assist in stirring. The existing self-spraying paint is filled under high pressure after the paint is treated by a special method. The self-spraying paint has wide application range, and the application range of the self-spraying paint is developed from the initial repair of paint defects to industries such as molds, industrial machinery, toys, artware, musical instruments, buildings, steel structures, advertising industry propaganda, identification, doodling and the like through economic development in recent years.

The marking-off self-spraying paint is one of many self-spraying paint products, which adopt unique valves and buttons and adopt inverted spraying construction (divided into two operation modes of a handheld type and a cart type). The operation of drawing a line from spraying paint is light, convenient and fast, can accomplish alone, and the width of drawing a line can be adjusted between 7cm to 13cm according to the demand, and the line effect is neat pleasing to the eye. The marking self-spraying paint product is mainly applied to occasions needing ground marks such as roads, parking lots, stadiums, entertainment venues, warehouses, factory workshops and factory passageways, the ground can be made of asphalt, ceramic tiles, cement concrete and the like, and special marks can be matched with templates to realize spraying of arrows, characters and the like.

Currently, some larger-scale companies in the aerosol industry have production, sale, marking, and self-painting, and are all of the organic solvent type. The existing organic solvent type marking self-spraying paint mainly has the following technical problems:

1. the smell is irritating, the toxicity is big, not environmental protection: the product contains a large amount of organic solvents, such as toluene, xylene, butyl acetate, ethyl acetate and the like, and the solvents have high toxicity. During the construction process, the solvents volatilize, and the strong pungent smell directly stimulates the mouth, the nose and the respiratory system of people, so that the constructors and the surrounding people feel serious discomfort. The defect is particularly obvious when the building is constructed in a relatively closed indoor place. Moreover, the organic solvents can generate permanent toxicity to human health after being contacted for a long time, and meanwhile, the ecological environment is further adversely affected;

2. difficult cleaning: if the clothes or skin are carelessly polluted by the solvent-based marking self-spray paint, the paint cannot be dissolved and diluted by water and then cleaned, and only organic solvents with strong dissolving power can be used for cleaning, and the organic solvents are toxic. The cleaning work in the construction is quite difficult, and the construction efficiency is invisibly reduced;

3. the organic solvent type marking self-spraying paint has low solid content and poor filling property, and when the paint is constructed on rough and uneven road surfaces, a paint film is absorbed by pits on the ground after being dried, so that marked lines are blurred and poor in covering power.

In recent years, with the enhancement of environmental awareness and the progress of modern industry and society, the production of coatings increasingly emphasizes the 4E principle, namely, "economies", "efficiencies", "Ecology", "Energy", so that the environment-friendly coatings are the trend of the development of the coating industry in the future, and mainly comprise high-solid coatings, powder coatings, ultraviolet electron beam curing coatings, water-based coatings and the like. Of which waterborne coatings have grown most rapidly in recent years. The water-based paint is safe and environment-friendly compared with an organic solvent type paint. The VOC content of the organic solvent type coating is high and generally exceeds 60%, an organic solvent is adopted as a diluent and a cleaning agent during construction, and meanwhile, the potential safety hazard of flammability and explosiveness exists in the transportation and storage processes. The VOC content of the water-based paint is low and is generally lower than 10%, a water-based diluent and a cleaning agent are adopted during construction, and the hidden danger of flammability and explosiveness does not exist in the transportation and storage processes. The water paint replaces organic solvent with water completely or partially, and reduces the emission of Volatile Organic Compounds (VOC). With the continuous upgrading of various water-based raw material technologies, the environmental protection consciousness of people is continuously improved, the national environmental protection regulations are improved, and the application range of the water-based paint is wider and wider.

The invention provides a water-based environment-friendly marking self-spraying paint which is used for replacing the traditional organic solvent-based marking self-spraying paint.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme: the water-based scribing self-spraying paint comprises a coating material liquid and a propellant, wherein the mass ratio of the coating material liquid to the propellant is as follows: 2-2.5: 1. wherein, the coating material liquid comprises the following components in percentage by weight: 25-30% of water-soluble resin, 0.5-1% of water-based acrylic block polymer type dispersing agent, 3.5-4% of pigment, 15-18% of talcum powder, 3.0-3.5% of ammonia water, 40-50% of organic alcohol, 2-2.4% of rheological additive and the balance of deionized water.

Preferably, the water-soluble resin is water-soluble acrylic resin, the pigment is Y-55 organic yellow pigment, the talcum powder is 1500-mesh talcum powder, and the water-based acrylic block copolymer type dispersing agent is a water-based acrylic block copolymer type dispersing agent polymerized by a controllable free radical technology.

Further, the organic alcohol is a mixture of monohydric alcohol and polyhydric alcohol. Preferably, the organic alcohol is a mixture of ethanol and isopropanol, and the coating material liquid comprises 20-25 wt% of ethanol and 20-25 wt% of isopropanol.

Preferably, the rheological additive is a mixture of aqueous liquid polyamide and polyether polyol, and the coating material liquid comprises 1-1.2 wt% of aqueous liquid polyamide and 1-1.2 wt% of polyether polyol.

Further, the propellant is any one or a mixture of more of liquefied petroleum gas, dimethyl ether, carbon monoxide, carbon dioxide or inert gas. Preferably, the propellant is dimethyl ether.

The invention discloses a coating material liquid used in water-based scribing self-spray paint, which is prepared by polycompounding water-soluble propylene resin, ammonia water, organic pigment, water-based acrylic acid block copolymer type dispersing agent, deionized water, ethanol, isopropanol, talcum powder, water-based liquid polyamide rheological additive and polyether polyol rheological additive. The paint liquid uses water, ethanol and isopropanol to replace the prior organic solvent-based marking self-spray paint which adopts toluene, xylene, butyl acetate, ethyl acetate and other toxic and harmful organic solvents, thereby solving the problem of toxicity. The coating material liquid uses water-soluble acrylic resin to replace solvent type acrylic resin, so that good hydrophilic performance of a coating material liquid formula system is ensured, the water-soluble acrylic resin has excellent water resistance after being dried into a film, and the due physical and chemical properties of a final dried paint film are further ensured. The talcum powder is introduced into the coating material liquid formula system as the filling material, so that the cost is saved, the construction compatibility of the product is improved, and the clear and full marking effect can be achieved no matter the surface of a flat or rough road is faced.

The raw materials used in the coating material liquid formula system are all environment-friendly water-based materials, the smell is mild and not irritant, almost no harm is caused to human bodies, and the coating material liquid formula system is very favorable for maintaining the ecological environment. Even if the construction is carried out in an indoor closed place, the construction crowd can not feel uncomfortable, and the construction efficiency is greatly improved. Moreover, if the water-based line self-spraying paint pollutes clothes or skin in the construction process, the water-based line self-spraying paint is easy to clean by using clean water in a wet film state, and can be cleaned only by wiping with alcohol in a dry state, so that the water-based line self-spraying paint is convenient, environment-friendly and nontoxic.

The invention also discloses a preparation method of the water-based scribing self-spraying paint, which comprises the following steps:

s1: mixing and dispersing water-soluble resin and a water-based acrylic block polymer type dispersing agent uniformly, and adding a pigment while dispersing;

s2: grinding the mixture obtained in the step S1 to the fineness of less than or equal to 15 mu m, and then adding talcum powder;

s3: dispersing the mixture obtained in the step S2 to the fineness of less than or equal to 30 mu m, adding ammonia water, and uniformly dispersing;

s4: sequentially adding deionized water and organic alcohol into the mixture obtained in the step S3, and uniformly dispersing;

s5: adding a rheological aid into the mixture obtained in the step S4, uniformly dispersing, and filtering to obtain a coating material liquid;

s6: and (4) filling the coating material liquid obtained in the step (S5) into an aerosol can, and filling a propellant into the aerosol can.

Further, in step S1, the water-soluble resin and the water-based acrylic block copolymer dispersant are uniformly dispersed by using a paint high-speed dispersing machine.

Further, in step S2, the mixture is ground by a horizontal sand mill.

Further, in step S3, the mixture is dispersed by using a high-speed paint dispersing machine.

Further, in step S5, a 100-mesh filter screen is used for filtering.

Further, in step S6, the coating material liquid is filled into an aerosol can, the aerosol can is made of tinplate, 3 glass beads with the diameter of 16mm are put into the aerosol can, a spout valve is installed, then a sealing machine is used for sealing, and the propellant is filled into the can. The aerosol tank filled with the propellant needs to be immersed in water of 50 ℃ for water bath leakage detection, a code is projected at the bottom of the tank after the leakage detection is passed, then a T-shaped special button for line drawing paint is installed, and then a plastic large cover is installed.

The invention has the beneficial effects that: the invention discloses a water-based marking self-spraying paint which has mild smell, no stimulation, environment-friendly and low-toxicity material selection, convenient and quick construction and cleaning and is very beneficial to the maintenance of human health and ecological environment. The water-based marking has excellent self-painting filling property, can be compatible with construction of different road surface conditions, and achieves the same full and clear marking effect. The invention discloses a water-based marking self-spraying paint which has the advantages that the marking self-spraying paint on the market is incomparable at present, and the invention successfully overcomes the technical problems of the traditional marking self-spraying paint.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The water-based scribing self-spraying paint comprises a paint liquid and a propellant, wherein the propellant is dimethyl ether, and the paint liquid comprises the following components in percentage by weight: 25 percent of water-soluble acrylic resin, 0.5 percent of water-based acrylic block polymer type dispersant, 3.5 percent of Y-55 organic yellow pigment, 15 percent of 1500-mesh talcum powder, 3.0 percent of ammonia water, 20 percent of ethanol, 20 percent of isopropanol, 1 percent of water-based liquid polyamide, 1 percent of polyether polyol and the balance of deionized water.

s1: adopting a coating high-speed dispersion machine to mix and disperse the water-soluble acrylic resin and the water-soluble acrylic block polymer dispersant uniformly, and adding Y-55 organic yellow pigment while dispersing;

s2: grinding the mixture obtained in the step S1 to the fineness of 15 mu m by using a horizontal sand mill, and then adding 1500-mesh talcum powder;

s3: dispersing the mixture obtained in the step S2 to the fineness of 30 mu m by adopting a coating high-speed dispersion machine, adding ammonia water, and uniformly dispersing;

s4: sequentially adding deionized water, ethanol and isopropanol into the mixture obtained in the step S3, and uniformly dispersing;

s5: adding aqueous liquid polyamide and polyether polyol into the mixture obtained in the step S4, uniformly dispersing, filtering by adopting a 100-mesh filter screen, and filtering to obtain a coating material liquid;

s6: filling the coating material liquid obtained in the step S5 into an aerosol can, and mixing the coating material liquid and dimethyl ether according to the mass ratio of 2: 1 propellant is filled into the aerosol can.

Example 2

The water-based scribing self-spraying paint comprises a coating material liquid and a propellant, wherein the coating material liquid comprises the following components in percentage by weight: 25% of water-soluble acrylic resin, 1% of water-based acrylic block polymer type dispersing agent, 4% of Y-55 organic yellow pigment, 18% of 1500-mesh talcum powder, 3.5% of ammonia water, 20% of ethanol, 20% of isopropanol, 1.2% of water-based liquid polyamide, 1.2% of polyether polyol and the balance of deionized water.

s2: grinding the mixture obtained in the step S1 to the fineness of 10 mu m by using a horizontal sand mill, and then adding 1500 meshes of talcum powder;

s3: dispersing the mixture obtained in the step S2 to the fineness of 25 mu m by adopting a coating high-speed dispersion machine, adding ammonia water, and uniformly dispersing;

s6: filling the coating material liquid obtained in the step S5 into an aerosol can, and mixing the coating material liquid and dimethyl ether according to the mass ratio of 2.5: 1 propellant is filled into the aerosol can.

Example 3

The water-based scribing self-spraying paint comprises a coating material liquid and a propellant, wherein the coating material liquid comprises the following components in percentage by weight: 26 percent of water-soluble acrylic resin, 0.8 percent of water-based acrylic block polymer dispersant, 3.6 percent of Y-55 organic yellow pigment, 15 percent of talcum powder, 3.2 percent of ammonia water, 21 percent of ethanol, 25 percent of isopropanol, 1.1 percent of water-based liquid polyamide, 1.1 percent of polyether polyol and the balance of deionized water.

s2: grinding the mixture obtained in the step S1 to the fineness of 10 mu m by adopting a horizontal sand mill, and then adding talcum powder;

s3: dispersing the mixture obtained in the step S2 to the fineness of 20 mu m by adopting a coating high-speed dispersion machine, adding ammonia water, and uniformly dispersing;

s6: filling the coating material liquid obtained in the step S5 into an aerosol can, and mixing the coating material liquid and dimethyl ether according to the mass ratio of 2.3: 1 propellant is filled into the aerosol can.

Example 4

The water-based scribing self-spraying paint comprises a coating material liquid and a propellant, wherein the coating material liquid comprises the following components in percentage by weight: 30% of water-soluble acrylic resin, 0.6% of water-based acrylic block polymer type dispersing agent, 3.6% of Y-55 organic yellow pigment, 16% of talcum powder, 3.2% of ammonia water, 20% of ethanol, 23% of isopropanol, 1.1% of water-based liquid polyamide, 1.0% of polyether polyol and the balance of deionized water.

s6: filling the coating material liquid obtained in the step S5 into an aerosol can, and mixing the coating material liquid and dimethyl ether according to the mass ratio of 2.2: 1 propellant is filled into the aerosol can.

Example 5

The water-based scribing self-spraying paint comprises a coating material liquid and a propellant, wherein the coating material liquid comprises the following components in percentage by weight: 26 percent of water-soluble acrylic resin, 0.9 percent of water-soluble acrylic block polymer type dispersant, 3.9 percent of Y-55 organic yellow pigment, 17 percent of talcum powder, 22 percent of ethanol, 21 percent of isopropanol, 1.0 percent of water-based liquid polyamide, 1.1 percent of polyether polyol and the balance of deionized water.

s2: grinding the mixture obtained in the step S1 to the fineness of 15 mu m by adopting a horizontal sand mill, and then adding talcum powder;

s3: dispersing the mixture obtained in the step S2 to the fineness of 24 mu m by adopting a coating high-speed dispersion machine, adding ammonia water, and uniformly dispersing;

s6: filling the coating material liquid obtained in the step S5 into an aerosol can, and mixing the coating material liquid and dimethyl ether according to the mass ratio of 2.4: 1 propellant is filled into the aerosol can.

The aqueous scribing self-spray paint obtained in example 5 was subjected to a performance test, the results of which are given in the following table:

the technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An aqueous scribing self-spray paint, characterized in that:

the coating comprises a coating material liquid and a propellant, wherein the mass ratio of the coating material liquid to the propellant is as follows: 2-2.5: 1;

the coating material liquid comprises the following components in percentage by weight:

25-30% of water-soluble resin;

0.5-1% of water-based acrylic block polymer type dispersing agent;

3.5-4% of pigment;

15-18% of talcum powder;

3.0-3.5% ammonia water;

40-50% of organic alcohol, wherein the organic alcohol is a mixture of monohydric alcohol and polyhydric alcohol;

2-2.4% of a rheological additive;

the balance of deionized water.

2. The aqueous scribing self-painting according to claim 1, wherein: the water-soluble resin is water-soluble acrylic resin.

3. The aqueous scribing self-painting according to claim 1, wherein: the pigment is Y-55 organic yellow pigment.

4. The aqueous scribing self-painting according to claim 1, wherein: the organic alcohol is a mixture of ethanol and isopropanol.

5. The aqueous scribing self-painting according to claim 4, wherein: the coating material liquid comprises 20-25 wt% of ethanol and 20-25 wt% of isopropanol.

6. The aqueous scribing self-painting according to claim 1, wherein: the rheological additive is a mixture of aqueous liquid polyamide and polyether polyol.

7. The aqueous scribing self-painting according to claim 6, wherein: the coating material liquid comprises 1-1.2 wt% of water-based liquid polyamide and 1-1.2 wt% of polyether polyol.

8. The aqueous scribing self-painting according to claim 1, wherein: the propellant is any one or a mixture of more of liquefied petroleum gas, dimethyl ether, carbon monoxide, carbon dioxide or inert gas.

9. The aqueous scribing self-painting according to claim 7, wherein: the propellant is dimethyl ether.

10. A method of preparing an aqueous scribing self-lacquer according to claim 1, characterized in that it comprises the following steps:

s5: adding a rheological aid into the mixture obtained in the step S4, uniformly dispersing, and filtering to obtain the coating material liquid;

s6: and (4) filling the coating material liquid obtained in the step (S5) into an aerosol can, and then filling a propellant into the aerosol can.