CN112266661A

CN112266661A - Bio-based artistic coating and preparation method and application thereof

Info

Publication number: CN112266661A
Application number: CN202011047102.0A
Authority: CN
Inventors: 胡恒志; 羊惠燕; 付锴; 王翱雷; 陈善泉; 雷家乐
Original assignee: Guangdong Carpoly Science & Technology Material Co ltd
Current assignee: Beixin Jiabao Li Coatings Guangdong Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-01-26
Anticipated expiration: 2040-09-29
Also published as: CN112266661B

Abstract

The invention relates to a bio-based art coating and a preparation method and application thereof. The bio-based artistic coating is prepared from the following raw materials in parts by weight: 20-50 parts of bio-based acrylic emulsion, 20-28 parts of pearlescent pigment and 10-50 parts of water; the pearlescent pigment is pearlescent powder subjected to hydrophobic modification by a metal compound, and the glass transition temperature of the acrylic polymer in the bio-based acrylic emulsion is-15-0 ℃. The coating has excellent freeze-thaw resistance and film-forming property, extremely low VOC (volatile organic compounds) and excellent stain resistance; meanwhile, the coating is simple in construction and can be variously constructed, the strong three-dimensional effect is easily realized, and the surface of a paint film after being coated is rich in metallic texture and glittering and translucent flashing effect. In addition, the biological base material is adopted, so that the dependence on petrochemical raw materials is reduced, the environment is highly protected, the pursuit of people on environment protection and artistic coating is met, and the method has a wide application prospect.

Description

Bio-based artistic coating and preparation method and application thereof

Technical Field

The invention relates to the field of coatings, in particular to a bio-based artistic coating and a preparation method and application thereof.

Background

While the paint industry is developing vigorously, people's environmental awareness and health awareness are also strengthened. However, the emulsion used in the current water-based paint is synthesized by using petroleum resources as raw materials, and as the petroleum resources are gradually depleted, it is more and more important to find other resources replacing petrochemical resources as raw material sources for synthesizing high molecular materials. Safer plant renewable resources, such as sugar, natural oil, corn starch and agricultural wastes, are used for replacing the traditional petroleum products, thereby reducing the emission of carbon dioxide, relieving the greenhouse effect, reducing the dependence on petroleum and meeting the pursuit of people on environmental protection and sustainable development.

Secondly, harmful substances such as Volatile Organic Compounds (VOC), benzene series, formaldehyde, etc. brought by interior decoration have become the focus of attention of consumers. Although the long-time ventilation helps to reduce the health influence of harmful substances on consumers, the concept of environmental protection and health is closer to the concept of adding no or less harmful substances from the source, and the real requirements of consumers are better met. The common bio-based emulsion at present has the problems of poor freezing and thawing stability and poor film forming performance of the coating, and auxiliary agents such as an antifreezing agent, a film forming auxiliary agent and the like are required to be added to ensure the freezing and thawing resistance and the film forming performance of the coating, and the antifreezing agent and the film forming auxiliary agent belong to volatile organic compounds, which pose great threat to human health and have important significance in reducing the use of the antifreezing agent and the film forming auxiliary agent.

In addition, the mental requirements of consumers on art quality, environmental atmosphere, cultural connotation and the like are continuously improved, and the art coating is specially designed for consumers who love life, understand life and pay attention to the quality of home life. Has various gorgeous color choices and rich artistic vision for coating effect. The wall surface effect of the light and grazing shadow is created by the silky texture, so that the wall surface is exquisite and greasy like a golden satin tassel, smooth and shining, luxurious and luxurious in nature and low in adjustment, and the luxury and luxury are added to the home. Among them, the art paint with pearly-lustre effect is always popular with consumers. At present, most enterprises deduce various effects through complex processes and color matching schemes, but are limited by the defects of the construction technology level, and the uniform effect of the sun and the shade on a large-area wall and the integral artistic aesthetic feeling are difficult to realize. In addition, the pollution resistance and the scrubbing resistance of the pearlescent effect artistic paint are poor, and particularly after the pearlescent effect artistic paint is drawn by watercolor strokes, scratches are difficult to remove, so that the attractiveness is affected.

Therefore, the development of the three-dimensional pearlescent effect interior wall artistic paint which has the advantages of excellent freeze-thaw resistance, excellent film forming property, stain resistance, strong three-dimensional effect (strong negative and positive surfaces), low odor, no solvent (or less solvent), simple construction process and based on the bio-based technology has extremely important significance.

Disclosure of Invention

Based on the above, the invention provides an environment-friendly biological substrate technical coating which has the advantages of excellent freeze-thaw resistance, excellent film forming property, low odor, no solvent, rich metal luster, strong three-dimensional effect and stain resistance.

The technical scheme is as follows:

a bio-based artistic coating is prepared from the following raw materials in parts by weight:

20-50 parts of bio-based acrylic emulsion, 20-28 parts of pearlescent pigment and 10-50 parts of water;

the pearlescent pigment is pearlescent powder subjected to hydrophobic modification by a metal compound;

the bio-based acrylic emulsion contains an acrylic polymer;

the glass transition temperature of the acrylic polymer is-15 ℃ to 0 ℃.

In one embodiment, the bio-based art coating is prepared from the following raw materials in parts by weight:

25-40 parts of bio-based acrylic emulsion, 22-26 parts of pearlescent pigment, 0.5-6 parts of fluff powder and 30-45 parts of water.

In one embodiment, the preparation method of the pearlescent pigment comprises the following steps:

coating the pearl powder by using a metal compound; the metal compound is selected from titanium tetrachloride or a metal oxide. Preferably, the metal compound is titanium tetrachloride.

In one embodiment, the pearlescent pigment has a particle size of 5 μm to 100 μm.

In one embodiment, the pearlescent pigment is prepared by compounding pearlescent powder A and pearlescent powder B according to the mass ratio of 1:0.8-1: 1.5;

the pearl powder A is pearl powder subjected to hydrophobic modification by a metal compound, and the particle size is 30-40 mu m;

the pearl essence B is pearl essence which is subjected to hydrophobic modification by a metal compound, and the particle size is 60-80 μm.

In one embodiment, the glass transition temperature of the acrylic polymer in the bio-based acrylic emulsion is-8 ℃ ± 4 ℃.

In one embodiment, the bio-based acrylic emulsion is selected from at least one of bio-based styrene-acrylic emulsion, bio-based acrylic emulsion, and bio-based acrylic emulsion.

In one embodiment, the bio-based acrylic emulsion is selected from the group consisting of bardiful RS-799 emulsion.

20-50 parts of bio-based acrylic emulsion, 22-26 parts of pearlescent pigment, 2-4 parts of fluff powder, 10-50 parts of water and 0.5-30 parts of auxiliary agent;

the auxiliary agent is at least one selected from a dispersing agent, a wetting agent, a defoaming agent, a pH regulator, a bactericide and a rheological auxiliary agent.

In one embodiment, the auxiliary comprises:

0.2-5 parts of rheological additive, 0.1-1 part of dispersant, 0.1-1 part of wetting agent, 0.1-2 parts of defoaming agent, 0.05-1 part of pH regulator and 0.1-1 part of bactericide.

In one embodiment, the rheology aid is selected from at least one of cellulose, bentonite, and alkali swelling rheology agents.

In one embodiment, the cellulose is selected from at least one of the group consisting of 250HBR of Isilant, HK-75000S of Hercules, USA, and Letian hydroxyethylcellulose B30K; and/or the presence of a gas in the gas,

the bentonite is selected from at least one of ATT-40 of Pasteur, ATT-50 of Pasteur, EW of Hamins and RD of Lokward; and/or the presence of a gas in the gas,

the alkali swelling rheological agent is at least one selected from Rohm and Haas alkali swelling thickener ASE 60, Gaotai 4800, Rohm and Haas TT615 and Dow chemical TT 935.

In one embodiment, the dispersant is selected from the group consisting of polyacrylate type dispersants, such as OROTAN^TMAt least one of fast and easy, French Gaotai P30 or French Xianchuang B03 dispersant; and/or the presence of a gas in the gas,

the wetting agent is selected from at least one of LCN 407 of Craine and EH-9 of Dow, USA; and/or the presence of a gas in the gas,

the antifoaming agent is at least one selected from NXZ of Nopock, T-4507 of Astilbin and ST 2410AC of Basff; and/or the presence of a gas in the gas,

the pH regulator is at least one selected from ammonia water, NaOH and AMP 95; and/or the presence of a gas in the gas,

the bactericide is at least one selected from Kathon of Dow, BIT, Torrel preservative EG CONC and MBS 5050.

In one embodiment, the fluff powder is at least one selected from polyacrylate microspheres, polystyrene microspheres, and polyurethane microspheres.

In one embodiment, the fluff powder has a particle size of 30 μm to 40 μm.

In one embodiment, the fine hair powder is at least one selected from Japanese root fine hair powder C-400, Japanese root fine hair powder AK-400TR, Japanese root fine hair powder G-400, Japanese root fine hair powder C-200, Poa japonica fine hair powder H-2000 and Japanese root fine hair powder G300.

In one embodiment, the material is prepared from the following raw materials in parts by weight:

20-50 parts of bio-based acrylic emulsion, 22-26 parts of pearlescent pigment, 2-4 parts of fluff powder, 10-50 parts of water, 0.2-1 part of cellulose, 0.3-1 part of bentonite, 0.8-1.5 parts of alkali swelling rheological agent, 0.1-1 part of dispersing agent, 0.1-1 part of wetting agent, 0.1-2 parts of defoaming agent, 0.05-1 part of pH regulator and 0.1-1 part of bactericide.

The invention also provides a preparation method of the bio-based artistic coating, which comprises the following steps:

mixing the bio-based acrylic emulsion, the pearlescent pigment and water.

The invention also provides an interior wall coating, and the preparation raw materials of the interior wall coating comprise the bio-based artistic coating; or comprises the bio-based art coating obtained according to the preparation method.

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

the preparation raw materials of the bio-based artistic paint provided by the invention comprise bio-based acrylic emulsion, pearlescent pigment and water in specific parts by weight. The glass transition temperature of the acrylic polymer in the bio-based acrylic emulsion is-10-30 ℃, so that the paint has excellent freeze-thaw resistance, can be used at low temperature, and the use of an anti-freezing agent is reduced; meanwhile, the emulsion has extremely low VOC, and because the emulsion is prepared by adopting bio-based raw materials, the dependence on fossil raw materials is reduced, and the emulsion is highly environment-friendly; the pearlescent pigment is pearlescent powder modified by metal compound hydrophobic, belongs to light powder with special structure, and has many optical characteristics, such as metal flashing effect, visual angle flashing effect, color transfer effect, etc. The mechanism of the glittering effect is that when light rays are subjected to multiple light refraction, reflection, partial absorption and partial penetration on transparent interfaces with different refractive indexes, interference of light is generated between various parallel reflected light, so that the pearl powder has metallic luster and changeable color effect.

Meanwhile, after the pearl powder is subjected to hydrophobic modification, the hydrophobic end faces outwards, the surface tension is extremely low, a lotus leaf effect is formed, stains are difficult to attach to the surface, the hydrophobic modified pearl powder is matched with a bio-based acrylic emulsion which is low in smell, low in film forming temperature, good in film forming performance, proper in crosslinking degree and hardness, excellent in stain resistance and wide in source for use, and a paint film is more hydrophobic and oleophobic through a specific raw material ratio, so that the stain resistance effect is achieved.

Furthermore, if the fluff powder is added into the formula, the hand feeling is fine and smooth and elastic, so that the prepared artistic coating has luxurious appearance with pearl luster and velvet hand feeling.

Furthermore, if the pearl powders with different particle sizes are matched, the traveling path of light rays in the paint film is changed, people can see different and richer colors, and a three-dimensional visual effect is brought to vision through color superposition.

In a word, the bio-based artistic coating provided by the invention has the advantages of excellent freeze-thaw resistance, film forming property, low VOC, low odor, no solvent, metallic luster, delicate hand feeling, strong three-dimensional effect, excellent stain resistance (water-resistant color pen), easily available raw materials, low cost, economy, environmental protection and the like, meets the pursuit of people for environment-friendly and artistic coatings, and has wide application prospect.

Drawings

FIG. 1 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 1;

FIG. 2 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 3;

FIG. 3 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 4;

FIG. 4 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 5;

FIG. 5 is a rubbing process effect picture of the bio-based art paint in comparative example 1;

FIG. 6 is a rubbing process effect picture of the bio-based art paint in comparative example 3;

fig. 7 is a rubbing process effect picture of the bio-based art paint in comparative example 5.

Detailed Description

The present invention will be described in further detail with reference to specific examples. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention provides the three-dimensional pearlescent effect artistic paint which has the advantages of high efficiency, lasting stain resistance (water-resistant color pen), fine hand feeling, strong three-dimensional effect (strong shade and sun surface) and simple construction process.

The technical scheme is as follows:

the bio-based acrylic emulsion contains an acrylic polymer;

the glass transition temperature of the acrylic polymer is-15 ℃ to 0 ℃.

In the invention, the raw material for preparing the bio-based art coating comprises 20-50 parts of bio-based acrylic emulsion. The glass transition temperature of the acrylic polymer in the bio-based acrylic emulsion is-15-0 ℃, so that the coating has excellent freeze-thaw resistance, can be used at low temperature, and the use of an anti-freezing agent is reduced; meanwhile, the emulsion has extremely low VOC, and because the emulsion is prepared from bio-based raw materials, the dependence on fossil raw materials is reduced, and the emulsion is highly environment-friendly.

Preferably, the bio-based acrylic emulsion is selected from at least one of bio-based styrene-acrylic emulsion, bio-based acrylic emulsion and bio-based acrylic emulsion.

In one preferred embodiment, the bio-based acrylic emulsion is selected from the group consisting of bardet RS-799 emulsion.

Particularly preferably, the bio-based acrylic emulsion is selected from the group consisting of the bardet rich RS-799 emulsion (which has a glass transition temperature of about-5 ℃). The emulsion takes acrylic ester as a main functional monomer, and adopts the particle protection layer technology, so that the problems of poor film forming, poor freeze thawing, short opening time and the like caused by solvent deficiency are solved. The soft core and hard shell structure and the self-crosslinking technology enable the emulsion to have lower film-forming temperature and proper crosslinking degree and hardness, and improve the film-forming property. The paint is prepared without adding an antifreezing agent and a film forming aid, has extremely low VOC, adopts a bio-based raw material, reduces the dependence on fossil raw materials, and is highly environment-friendly.

In the invention, the raw materials for preparing the bio-based art paint also comprise 20-28 parts of pearlescent pigment; the pearlescent pigment is pearlescent powder which is subjected to hydrophobic modification by a metal compound.

The pearl powder modified by metal compound is a light powder with special structure, its cross section has physical structure similar to pearl, its interior is base material with low light refractive index (such as mica or glass), and its exterior layer is covered with metal oxide with high refractive index, such as titanium dioxide and iron oxide. The unique pearl powder structure makes it possess many optical characteristics, such as metal flash effect, visual angle flash effect, color transfer effect, etc. The mechanism of the glittering effect is that when light rays are subjected to multiple light refraction, reflection, partial absorption and partial penetration on transparent interfaces with different refractive indexes, light interference is generated between various parallel reflected lights, so that the pearl powder has metallic luster and variable color effect.

In addition, after the pearl powder is subjected to hydrophobic modification, the hydrophobic end faces outwards, the surface tension is extremely low, the lotus leaf effect is formed, and stains are difficult to attach to the surface. With such pearlescent pigments, dispersibility and wettability are better, and they can be more uniformly dispersed in a binder slurry of a coating material without precipitation. Can improve the physical and chemical properties of the paint, enhance the chemical stability, improve the covering power, have good pearly luster effect, enhance the mechanical strength of the paint film, prevent the paint film from cracking or falling off, prevent ultraviolet rays and moisture from penetrating, resist contamination and scrub, and prolong the service life of the paint film. In addition, through a matched construction process, the rubbing coating enables the paint film to be more compact, and the stain resistance of the paint film is better.

Preferably, the preparation method of the pearlescent pigment comprises the following steps:

coating the pearl powder by using a metal compound; the metal compound is selected from titanium tetrachloride or a metal oxide.

Preferably, the metal compound is selected from at least one of iron oxide, titanium dichloride and rutile titanium dioxide.

Preferably, the hydrophobically modified material is selected from titanium tetrachloride. The base material of the pearl powder is selected from natural mica, synthetic mica or glass.

Preferably, the natural mica or synthetic mica has a particle size of 5 μm to 100. mu.m. Preferably, the pearlescent pigment is prepared by compounding metallic compound hydrophobic modified pearlescent powder A with the particle size of 30-40 μm and metallic compound hydrophobic modified pearlescent powder B with the particle size of 60-80 μm.

More preferably, the mass ratio of the pearl essence A subjected to hydrophobic modification by the metal compound to the pearl essence B subjected to hydrophobic modification by the metal compound is 1:0.8-1: 1.5. For example, the pearlescent pigment is 18 parts by weight, and the composition comprises 8 parts of pearlescent powder A with the particle size of 30-40 μm and hydrophobically modified by metal compound and 10 parts of pearlescent powder B with the particle size of 60-80 μm and hydrophobically modified by metal compound.

In one embodiment, the raw materials for preparing the bio-based art coating also comprise 0.5 to 6 parts of fluff powder.

Preferably, the bio-based art coating is prepared from the following raw materials in parts by weight:

The addition of the fine hair powder can lead the coating to have fine hand feeling and elasticity, and the coating has the touch feeling like velvet. Preferably, the total adding weight of the villus powder and the pearlescent pigment is 26-30 parts.

In one embodiment, the fluff powder is at least one selected from polyacrylate microspheres, polystyrene microspheres, and polyurethane microspheres. By using fine, smooth, textured and elastic polymer microsphere villus powder as a raw material and combining with pearlescent pigment, the prepared artistic coating has luxurious exterior with full pearly luster and velvet hand feeling of swan.

In one preferable embodiment, the particle size of the fluff powder is 30-40 μm, the fluff powder is better in matching effect with the pearlescent pigment, and the effect of the yin and yang side is better.

Preferably, the fluff powder in the present invention is selected from Japanese milkvetch root fluff powder C-400.

In the invention, the raw materials for preparing the bio-based art coating also comprise 0.5-10 parts of auxiliary agent; the auxiliary agent is at least one selected from a dispersing agent, a wetting agent, a defoaming agent, a pH regulator, a bactericide and a rheological auxiliary agent.

Preferably, the auxiliary agent comprises the following raw materials in parts by weight:

The rheological additive achieves the aim of increasing the viscosity of the coating through a network structure of the rheological additive or a network structure formed by a series of changes of the rheological additive. In addition, the rheological additive can thicken the coating, prevent sagging phenomenon in construction, and endow the coating with excellent mechanical property and storage stability.

In one preferred embodiment, the cellulose is selected from at least one of the group consisting of 250HBR of Isilant, HK-75000S of Hercules, USA, and Letian hydroxyethyl cellulose B30K; and/or the presence of a gas in the gas,

the alkali swelling rheological agent is at least one selected from Rohm and Ha alkali swelling thickener ASE 60, Gaotai 4800, Rohm and Ha Si TT615, and Dow chemical TT 935.

The wetting agent has good hydrophobic effect, can be matched with pearl powder, biological acrylic emulsion and a dispersing agent which are subjected to hydrophobic modification by a metal compound for use, and enables a paint film to be more hydrophobic and oleophobic through a specific raw material ratio, so that the stain resistant effect is achieved.

In one embodiment, the wetting agent is selected from at least one of LCN 407 and EH-9.

The dispersing agent has good hydrophobic effect and dispersing effect, can be matched with pearl powder, biological acrylic emulsion and wetting agent which are subjected to hydrophobic modification by metal compounds for use, and enables a paint film to be more hydrophobic and oleophobic through a specific raw material ratio, so that the stain resistant effect is achieved.

In one embodiment, the dispersant is selected from the group consisting of polyacrylate type dispersants. Preferably, it is selected from OROTAN^TMAt least one of fast and easy, French Gaotai P30 or French pioneer B03 dispersant.

Defoaming agents, which reduce surface tension, prevent foam formation, or reduce or eliminate original foam.

In one embodiment, the defoamer is selected from at least one of NXZ, T-4507, and ST 2410 AC.

In one embodiment, the pH regulator is at least one selected from ammonia, NaOH, and AMP 95.

If the pH regulator is AMP95, in addition to adjusting pH, the amount of dispersant can be reduced after AMP95 is used; the foam is reduced due to the reduced amount of dispersant. In addition, when AMP95 is used in combination with cellulose, the thickening effect of the cellulose can be improved and the amount of the thickener can be reduced.

The bactericide has strong bactericidal and bacteriostatic effects, and can prevent the product from being infected by microorganisms in the production and storage processes.

20-50 parts of bio-based acrylic emulsion, 22-26 parts of pearlescent pigment, 10-50 parts of water, 0.2-1 part of cellulose, 0.3-1 part of bentonite, 0.8-1.5 parts of alkali swelling rheological agent, 0.1-1 part of dispersant, 0.1-1 part of wetting agent, 0.1-2 parts of defoaming agent, 0.05-1 part of pH regulator, 0.5-6 parts of fluff powder and 0.1-1 part of bactericide.

The artistic coating prepared according to the formula has extremely low odor, low VOC and stain resistance, can have lower film forming temperature, good film forming property and frost resistance without adding a film forming auxiliary agent, an antifreezing agent and a solvent, has longer opening time, is convenient for construction, and the surface of a paint film after being coated is rich in metal texture, glittering and translucent flash effect and special fluffy hand feeling.

In one preferred embodiment, the bio-based artistic coating is prepared from the following raw materials in parts by weight:

25-40 parts of bio-based acrylic emulsion, 22-26 parts of pearlescent pigment, 30-45 parts of water, 0.2-0.5 part of cellulose, 0.3-0.8 part of bentonite, 0.8-1.5 parts of alkali swelling rheological agent, 0.1-0.6 part of dispersant, 0.1-0.5 part of wetting agent, 0.2-1 part of defoamer, 0.1-0.5 part of pH regulator, 0.5-6 parts of fluff powder and 0.2-1 part of bactericide.

mixing the bio-based acrylic emulsion, the pearlescent pigment and water.

When the formula contains the components of bio-based acrylic emulsion, pearlescent pigment, water, cellulose, bentonite, alkali swelling rheological agent, dispersant, wetting agent, defoaming agent, pH regulator, fluff powder and bactericide, the preparation method is as follows:

(1) premixing: according to the proportion, water is added into a dispersion cylinder, a dispersing agent, a wetting agent, part of defoaming agent and cellulose are sequentially added under the stirring state, the materials are fully mixed to form a colloidal substance so as to be beneficial to dispersion, and the stirring speed is controlled at 300-500 rpm/min;

(2) grinding and dispersing: adding bentonite, pearlescent pigment, fluff powder and pH regulator into a dispersion cylinder, stirring at high speed for 15-20min, dispersing pearlescent pigment particles into primary particles under the action of high shear rate of high-speed stirring, and obtaining a stable dispersion state under the action of a dispersing auxiliary agent system;

(3) after high-speed grinding and dispersing, adding the balance of water and bactericide into a dispersing cylinder, then adding the bio-based acrylic emulsion, and uniformly mixing, wherein the mixing speed is controlled to be 800rpm/min-1200 rpm/min;

(4) adding the rest defoaming agent and alkali swelling thickener into the dispersion cylinder, uniformly mixing, and controlling the rotation speed of mixing and stirring at 800-1200 rpm/min.

Preferably, the adding amount of the water in the step (1) accounts for 80-99% of the total adding amount of the water by mass percent, and the adding amount of the water in the step (3) accounts for 1-20% of the total adding amount of the water by mass percent.

The intercoat viscosity of the bio-based art coating obtained by the preparation method is controlled to be 120-140 ku.

The following are specific examples.

The following examples and comparative examples have the following raw material information:

fluff powder: japan kept up with fluff powder C400; dispersing agent: p30; wetting agent: LCN 407; defoaming agent: NXZ; and (3) bactericide: MBS 5050; pH regulator: dow AMP-95; cellulose: asiatlan 250 HBR; bentonite: ATT-50; alkali swelling thickener: TT 615.

The matching process comprises the following steps:

rubbing and coating process: 1 time of roller coating primer, one time of roller coating art emulsion paint (color 1), one time of rubbing art pearl paint (color 1), and one time of rubbing art pearl paint (color 1)

Example 1

The embodiment provides a bio-based artistic coating and a preparation method thereof.

(1) The composition of the bio-based art coating 1 is as follows:

39.2 parts of water, 30 parts of RS-799 emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 24 parts of pearlescent pigment, 4 parts of wool powder, 0.3 part of bactericide and 0.8 part of alkali swelling thickener.

The inner layer of the pearlescent pigment is mica, the coating layer is titanium tetrachloride, and the pearlescent pigment comprises 11 parts of hydrophobically modified pearlescent powder A with the particle size of 30-40 mu m and 13 parts of hydrophobically modified pearlescent powder B with the particle size of 60-80 mu m.

(2) Preparing a bio-based artistic coating 1:

premixing: according to the proportion, 95 percent of water is added into a dispersion cylinder, a dispersant, a wetting agent, 50 percent of defoamer and cellulose are sequentially added under the stirring state, and are fully mixed to form a colloidal substance so as to be beneficial to the dispersion of the pearlescent pigment, and the stirring speed is controlled at 300-500 rpm/min;

grinding and dispersing: adding bentonite, pearlescent pigment, fluff powder and pH regulator into a dispersion cylinder, stirring at high speed for 15-20min, dispersing pearlescent pigment particles into primary particles under the action of high shear rate of high-speed stirring, and obtaining a stable dispersion state under the action of a dispersing auxiliary agent system;

thirdly, after high-speed grinding and dispersion, adding the balance of water, bactericide and bio-based acrylic emulsion into a dispersion cylinder, and uniformly mixing, wherein the mixing speed is controlled at 800-1200 rpm/min;

adding 50% of defoaming agent and alkali swelling thickener into the dispersion cylinder, mixing uniformly, and controlling the rotating speed of mixing and stirring at 800-.

Example 2

(1) The composition of the bio-based art coating 2 is as follows:

39.2 parts of water, 30 parts of RS-799 emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 26 parts of pearlescent pigment, 2 parts of fluff powder, 0.3 part of bactericide and 0.8 part of alkali swelling thickener.

The inner layer of the pearlescent pigment is mica, the coating layer is titanium tetrachloride, and the pearlescent pigment comprises 12 parts of hydrophobically modified pearlescent powder A with the particle size of 30-40 mu m and 14 parts of hydrophobically modified pearlescent powder B with the particle size of 60-80 mu m.

(2) Preparing a bio-based artistic coating 2:

Example 3

(1) The composition of the bio-based art coating 3 is as follows:

45 parts of water, 36 parts of RS-799 emulsion, 0.4 part of cellulose, 0.3 part of bentonite, 0.6 part of dispersant, 0.1 part of wetting agent, 0.7 part of defoamer, 0.1 part of pH regulator, 22 parts of pearlescent pigment, 3 parts of fluff powder, 0.7 part of bactericide and 1 part of alkali swelling thickener.

The inner layer of the pearlescent pigment is mica, the coating layer is titanium tetrachloride, and the pearlescent pigment comprises 13 parts of hydrophobically modified pearlescent powder A with the particle size of 30-40 mu m and 9 parts of hydrophobically modified pearlescent powder B with the particle size of 60-80 mu m.

(2) Preparing a bio-based artistic coating 3:

the preparation method is the same as that of the example 1, and the bio-based art paint 3 is obtained.

Example 4

The embodiment provides a bio-based artistic coating and a preparation method thereof. The difference from example 1 is that the coating material outside the pearlescent pigment used in example 4 is titanium dioxide.

(1) The composition of the bio-based art coating 4 is as follows:

The inner layer of the pearlescent pigment is mica, the coating layer is titanium dioxide, and the pearlescent pigment comprises 11 parts of hydrophobically modified pearlescent powder A with the particle size of 30-40 mu m and 13 parts of hydrophobically modified pearlescent powder B with the particle size of 60-80 mu m.

(2) Preparing a bio-based artistic coating 4:

the preparation method is the same as that of example 1, and the bio-based art coating 4 is obtained.

Example 5

The embodiment provides a bio-based artistic coating and a preparation method thereof. The difference from example 1 is that pearlescent pigments having the same particle size are used.

(1) The composition of the bio-based art coating 5 is as follows:

39.2 parts of water, 30 parts of RS-799 emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 24 parts of pearlescent pigment, 2 parts of wool powder, 0.3 part of bactericide and 0.8 part of alkali swelling thickener.

The inner layer of the pearlescent pigment is mica, the coating layer is titanium tetrachloride, and the particle size is 30-40 μm.

(2) Preparing a bio-based artistic coating 5:

the preparation method is the same as that of example 1, and the bio-based art paint 5 is obtained.

Example 6

The embodiment provides a bio-based artistic coating and a preparation method thereof. The difference from example 1 is that the proportions of the raw materials are different.

(1) The composition of the bio-based artistic coating 6 is as follows:

25 parts of water, 25 parts of RS-799 emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 22 parts of pearlescent pigment, 4 parts of fluff powder, 0.3 part of bactericide and 0.5 part of alkali swelling thickener.

The inner layer of the pearlescent pigment is mica, the coating layer is titanium tetrachloride, and the pearlescent pigment comprises 12 parts of hydrophobically modified pearlescent powder A with the particle size of 30-40 mu m and 10 parts of hydrophobically modified pearlescent powder B with the particle size of 60-80 mu m.

(2) Preparing a bio-based artistic coating 6:

the preparation method is the same as that of example 1, and the bio-based art coating 6 is obtained.

Comparative example 1

The present comparative example provides a bio-based artistic coating and a method of making the same. The difference from example 1 is that the pearlescent pigment is not hydrophobically modified.

(1) The composition of the bio-based art coating 7 is as follows:

The pearlescent pigment is mica, and comprises 11 parts of mica powder A with the particle size of 30-40 μm and 13 parts of mica powder B with the particle size of 60-80 μm.

(2) Preparing a bio-based artistic coating 7:

the preparation method is the same as that of example 1, and the bio-based art paint 7 is obtained.

Comparative example 2

The present comparative example provides an artistic coating and a method of making the same. The difference from the example 1 is that the added emulsion is a common polyacrylate emulsion, is not a bio-based acrylic emulsion, and is added with a film-forming assistant and an antifreezing agent.

(1) Composition of art paint 8:

39.2 parts of water, 30 parts of basf ECO338AP emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 24 parts of pearlescent pigment, 4 parts of fluff powder, 0.3 part of bactericide and 0.8 part of alkali swelling thickener.

(2) Preparing a bio-based artistic coating 8:

the preparation method is the same as that of the example 1, the obtained bio-based artistic coating 8 has extremely poor film forming property and extremely poor freeze-thaw resistance, and the coating can be demulsified at low temperature to cause that the coating cannot be used, so that the formula is modified, and the modified formula is as follows:

(1-1) 39.2 parts of water, 30 parts of Basff ECO338AP emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 24 parts of pearlescent pigment, 4 parts of fluff powder, 0.3 part of bactericide, 0.8 part of alkali swelling thickener, 1.8 parts of Ischman OE400 film-forming aid and 0.8 part of Asiatic blue FT-68 antifreezing agent.

(2-1) preparing an art coating 8-1:

the preparation method is basically the same as that of the embodiment 1, and the difference is that the film-forming additive is added in the step (r), and the antifreezing agent is added in the step (r), so that the artistic coating 8-1 is obtained.

Comparative example 3

The embodiment provides a bio-based artistic coating and a preparation method thereof. The difference from example 1 is that comparative example 3 uses a different model of bio-based acrylic emulsion.

(1) The composition of the bio-based art coating 9 is as follows:

39.2 parts of water, 30 parts of a biological-based emulsion Archsol 8171 emulsion (the glass transition temperature of the emulsion is higher than 0 ℃), 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of a dispersing agent, 0.5 part of a wetting agent, 0.2 part of a defoaming agent, 0.1 part of a pH regulator, 24 parts of a pearlescent pigment, 4 parts of fluff powder, 0.3 part of a bactericide and 0.8 part of an alkali swelling thickening agent.

(2) Preparing a bio-based artistic coating 9:

the preparation method is the same as that of the example 1, the obtained bio-based artistic coating 9 has extremely poor film forming property and extremely poor freeze-thaw resistance, and the coating can be demulsified at low temperature to cause that the coating cannot be used, so that the formula is modified, and the modified formula is as follows:

(1-1) 39.2 parts of water, 30 parts of a biological-based emulsion Archsol 8171 emulsion (the glass transition temperature of the emulsion is higher than 0 ℃), 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of a dispersing agent, 0.5 part of a wetting agent, 0.2 part of an antifoaming agent, 0.1 part of a pH regulator, 24 parts of pearlescent pigment, 4 parts of fluff powder, 0.3 part of a bactericide, 0.8 part of an alkali swelling thickener, 1.8 parts of an Eyman OE400 film-forming aid and 0.8 part of an FT-68 antifreezing agent.

(2-1) preparing a bio-based art coating 9-1:

the preparation method is basically the same as that of the embodiment 1, and is different in that a film-forming additive is added in the step (r), and an antifreezing agent is added in the step (r), so that the bio-based artistic coating 9-1 is obtained.

Comparative example 4

The embodiment provides a bio-based artistic coating and a preparation method thereof. The difference from example 1 is that comparative example 4 uses a different model of bio-based acrylic emulsion.

(1) The composition of the bio-based art coating 10 is as follows:

39.2 parts of water, 30 parts of a bio-based emulsion Nippon Dongli V911X51 emulsion (the glass transition temperature of the emulsion is higher than about 0 ℃), 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of a dispersing agent, 0.5 part of a wetting agent, 0.2 part of a defoaming agent, 0.1 part of a pH regulator, 24 parts of a pearlescent pigment, 4 parts of fluff powder, 0.3 part of a bactericide and 0.8 part of an alkali swelling thickening agent.

(2) Preparing a bio-based artistic coating 10:

the preparation method is the same as that of the example 1, the obtained bio-based artistic coating 10 has extremely poor film forming property and extremely poor freeze-thaw resistance, and the coating can be demulsified at low temperature to cause that the coating cannot be used, so that the formula is modified, and the modified formula is as follows:

39.2 parts of water, 30 parts of a bio-based emulsion Nippon Dongli V911X51 emulsion (the glass transition temperature of the emulsion is higher than about 0 ℃), 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of a dispersing agent, 0.5 part of a wetting agent, 0.2 part of an antifoaming agent, 0.1 part of a pH regulator, 24 parts of a pearlescent pigment, 4 parts of fluff powder, 0.3 part of a bactericide, 0.8 part of an alkali swelling thickener, 1.8 parts of an Islam OE400 film-forming aid and 0.8 part of an Ashland FT-68 antifreezing agent.

(2-1) preparing a bio-based art coating 10-1:

the preparation method is basically the same as that of the embodiment 1, and is different in that a film-forming additive is added in the step (r), and an antifreezing agent is added in the step (r), so that the bio-based artistic coating 10-1 is obtained.

Comparative example 5

The embodiment provides a bio-based artistic coating and a preparation method thereof. The difference from example 1 is that comparative example 5 employs 18 parts of pearlescent pigment.

(1) The composition of the bio-based art coating 11 is as follows:

39.2 parts of water, 30 parts of RS-799 emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 18 parts of pearlescent pigment, 4 parts of wool powder, 0.3 part of bactericide and 0.8 part of alkali swelling thickener.

The inner layer of the pearlescent pigment is mica, the coating layer is titanium tetrachloride, and the pearlescent pigment comprises 8.2 parts of hydrophobically modified pearlescent powder A with the grain diameter of 30-40 mu m and 9.8 parts of hydrophobically modified pearlescent powder B with the grain diameter of 60-80 mu m.

(2) Preparing a bio-based artistic coating 11:

the preparation method is the same as that of example 1, and the bio-based art paint 11 is obtained.

Comparative example 6

The embodiment provides a bio-based artistic coating and a preparation method thereof. The difference from example 1 is that comparative example 6 uses 32 parts of pearlescent pigment.

(1) Composition of bio-based art coating 12:

39.2 parts of water, 30 parts of RS-799 emulsion, 0.2 part of cellulose, 0.4 part of bentonite, 0.3 part of dispersant, 0.5 part of wetting agent, 0.2 part of defoamer, 0.1 part of pH regulator, 32 parts of pearlescent pigment, 4 parts of wool powder, 0.3 part of bactericide and 0.8 part of alkali swelling thickener.

The inner layer of the pearlescent pigment is mica, the coating layer is titanium tetrachloride, and the pearlescent pigment comprises 14.5 parts of hydrophobically modified pearlescent powder A with the grain diameter of 30-40 mu m and 17.5 parts of hydrophobically modified pearlescent powder B with the grain diameter of 60-80 mu m.

(2) Preparing a bio-based artistic coating 12:

the preparation method is the same as that of example 1, and the bio-based art paint 12 is obtained.

The bio-based art coatings of examples 1-6 and comparative examples 1-6 were subjected to performance testing.

1. Performance indexes are as follows:

stain resistance: stains include marks left by rose children watercolor pens and purple children watercolor pens; smearing the stain on a paint film, wiping off the stain after drying for 1h, scrubbing with liquid detergent, observing whether marks exist after drying, and scoring the stain resistance into 10 points.

VOC: GB 18582-; the VOC is required to be less than or equal to 120 g/L.

Metallic luster: self-defining, visual inspection, and 10 points of full score.

Fluffy hand feeling: custom, visual and tactile, full score 10.

Free formaldehyde: GB 18582-; free formaldehyde is required to be less than or equal to 100 ppm.

Benzene, toluene, ethylbenzene, xylene content: GB/T18581-; less than or equal to 300 ppm.

APEO: no artificial addition is required.

Heavy metals: GB 18582-; cadmium is less than or equal to 75 ppm; chromium is less than or equal to 60 ppm; mercury is less than or equal to 60 ppm.

Freeze-thaw resistance: GB/T9268-.

The results are shown in Table 1.

TABLE 1

As can be seen from Table 1, the bio-based artistic paints of examples 1-6 of the present invention have excellent stain resistance and freeze-thaw resistance, superior to those of comparative examples 1-6, and low VOC. Other relevant indexes, such as heavy metals, benzene substances, free formaldehyde content and the like meet the requirements, the comprehensive performance is excellent, and the method conforms to the industrial standard and the concept of environment-friendly production.

Comparing the results of example 1 and examples 2-6, it is clear that the type of bio-based emulsion, the combination of pearlescent pigments of different particle sizes, and the type of coating material all have an important effect on the coating performance of the present invention.

Comparing the results of example 1 and comparative example 1, it is found that if the pearlescent pigment is not subjected to hydrophobic modification treatment, the metallic luster is poor and the stain resistance is poor.

Comparing the results of the example 1 and the comparative example 2, it can be seen that with the conventional emulsion, the freeze-thaw resistance can still be ensured by adding an anti-freezing agent in the formula, otherwise the coating can be demulsified at low temperature and cannot be used, and the low-temperature storage performance cannot meet the requirements; in addition, a film-forming assistant still needs to be added into the formula, if not, the film-forming performance is poor, and the paint film is difficult to harden. Although the use effect can be achieved after the antifreezing agent and the film-forming additive are added, the film-forming additive and the antifreezing agent are organic matters, have high VOC, cause pollution to the environment and are not beneficial to health, and compared with the emulsion prepared from petrochemical raw materials, the use of the non-biological emulsion is not in accordance with sustainable development and green chemistry.

Comparing the results of the example 1 and the comparative examples 3 and 4, it can be seen that if the adopted emulsion is not a bio-based emulsion within the scope of the present invention, the anti-freezing property can be ensured only by adding an additional anti-freezing agent in the formula, otherwise, the coating can be demulsified at low temperature and can not be used, and the low-temperature storage property can not meet the requirements; moreover, a film-forming aid still needs to be added into the formula, otherwise the film-forming property is poor, and the paint film is difficult to harden. The film forming additive and the antifreezing agent are organic matters, have high VOC, can cause pollution to the environment and are not beneficial to health.

Comparing the results of example 1 and comparative example 5, it can be seen that if too little pearlescent pigment is added, which is not within the scope of the present invention, the pearlescent effect is poor, the metallic luster effect is poor, and the stain resistance is poor; comparing the results of example 1 and comparative example 6, it is understood that if too much pearlescent pigment is added, which is out of the range of the present invention, the pearlescent pigments are piled up, the flatness of the paint film is decreased, the pearlescent effect is poor, and the stain resistance is decreased.

2. Application testing

The bio-based art paint in examples 1, 3, 4 and 5 and comparative examples 1, 3 and 5 was applied by rubbing.

FIG. 1 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 1; as can be seen from FIG. 1, the block of the male and female surfaces is obvious, the metal effect is strong, and the male and female surfaces have very good effect.

FIG. 2 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 3; as can be seen from FIG. 2, the block of the male and female surfaces is obvious, the metal effect is strong, and the male and female surfaces have very good effect.

FIG. 3 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 4; as can be seen from FIG. 3, the block of the male and female surfaces is obvious, the metal effect is strong, and the male and female surfaces have good effects.

FIG. 4 is a photograph showing the effect of the rubbing process of the bio-based art paint in example 5; as can be seen from FIG. 4, the block of the male and female surfaces is obvious, the metallic effect is general, and the male and female surfaces have better effects.

FIG. 5 is a rubbing process effect picture of the bio-based art paint in comparative example 1; as can be seen from fig. 5, the block on the male and female surfaces is not obvious, the metal effect is poor, and the male and female surfaces have poor effects.

FIG. 6 is a rubbing process effect picture of the bio-based art paint in comparative example 3; as can be seen from FIG. 6, the block of the male and female surfaces is obvious, the metal effect is strong, and the male and female surfaces have very good effect.

FIG. 7 is a rubbing process effect picture of the bio-based art paint in comparative example 5; as can be seen from fig. 7, the negative and positive surface areas are not obvious, the metal effect is weak, and the negative and positive surface effect is poor.

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. a bio-based art paint, is characterized in that, is prepared from the raw material comprising following parts by weight:

Bio-based acrylic emulsion 20-50 parts, pearlescent pigment 20-28 parts, water 10-50 parts;

The pearlescent pigment is a pearlescent powder hydrophobically modified by a metal compound;

The bio-based acrylic emulsion contains an acrylic polymer;

The glass transition temperature of the acrylic polymer is -15°C-0°C.

2. bio-based art paint according to claim 1 is characterized in that, is prepared from the raw material comprising following parts by weight:

Bio-based acrylic emulsion 25-40 parts, pearlescent pigments 22-26 parts, fluff powder 0.5-6 parts, water 30-45 parts.

3. bio-based art paint according to claim 1, is characterized in that, the preparation method of described pearlescent pigment comprises the following steps:

The pearl powder is coated with a metal compound; the metal compound is selected from titanium tetrachloride or metal oxide.

4 . The bio-based art paint according to claim 1 , wherein the particle size of the pearlescent pigment is 5 μm-100 μm. 5 .

5. The bio-based art paint according to claim 4, wherein the pearlescent pigment is compounded by pearlescent powder A and pearlescent powder B in a mass ratio of 1:0.8-1:1.5;

The pearlescent powder A is a pearlescent powder hydrophobically modified by a metal compound, and the particle size is 30 μm-40 μm;

The pearlescent powder B is a pearlescent powder hydrophobically modified by a metal compound, and the particle size is 60 μm-80 μm.

6 . The bio-based art paint according to claim 1 , wherein the bio-based acrylic emulsion is selected from at least one of bio-based styrene-acrylic emulsion, bio-based pure acrylic emulsion and bio-based vinyl acetate-acrylate emulsion. 7 .

7. The bio-based art paint according to claim 6, wherein the bio-based acrylic emulsion is selected from RS-799 emulsion.

8. The bio-based art paint according to any one of claims 1-7, characterized in that, prepared from the raw materials comprising the following parts by weight:

20-50 parts of bio-based acrylic emulsion, 22-26 parts of pearlescent pigments, 2-4 parts of fluff powder, 10-50 parts of water, 0.5-30 parts of additives;

The auxiliary agent is selected from at least one of dispersing agent, wetting agent, defoaming agent, pH adjusting agent, bactericide and rheology auxiliary.

9. bio-based art paint according to claim 8, is characterized in that, described auxiliary agent comprises:

0.2-5 parts of rheology aid, 0.1-1 part of dispersant, 0.1-1 part of wetting agent, 0.1-2 part of defoamer, 0.05-1 part of pH adjuster and 0.1-1 part of bactericide.

10 . The bio-based art paint according to claim 8 , wherein the rheological aid is selected from at least one of cellulose, bentonite and alkali-swellable rheological agent. 11 .

11. The bio-based art paint according to claim 8, wherein the fluff powder is selected from at least one of polyacrylate-based microspheres, polystyrene-based microspheres and polyurethane-based microspheres.

12 . The bio-based art paint according to claim 8 , wherein the particle size of the fluff powder is 30 μm-40 μm. 13 .

13. The bio-based art paint according to claim 1 is characterized in that, it is prepared from the raw materials comprising the following parts by weight:

Bio-based acrylic emulsion 20-50 parts, pearlescent pigments 22-26 parts, fluff powder 2-4 parts, water 10-50 parts, cellulose 0.2-1 parts, bentonite 0.3-1 parts, alkali swelling rheology agent 0.8- 1.5 parts, dispersant 0.1-1 part, wetting agent 0.1-1 part, defoamer 0.1-2 part, pH adjuster 0.05-1 part and bactericide 0.1-1 part.

14. a preparation method of the described bio-based art paint of any one of claim 1-13, is characterized in that, comprises the following steps:

Mix the bio-based acrylic emulsion, pearlescent pigment and water.

15. An interior wall paint, characterized in that the preparation raw materials comprise the bio-based art paint according to any one of claims 1-13; or the bio-based art paint obtained by the preparation method according to claim 14.