CN111019487A

CN111019487A - Waterborne epoxy color-changing matte floor coating and preparation method thereof

Info

Publication number: CN111019487A
Application number: CN201911320486.6A
Authority: CN
Inventors: 仝其超; 李华刚; 郑毅; 胡中源
Original assignee: Hebei Chenyang Industry and Trade Group Co Ltd
Current assignee: Hebei Chenyang Industry and Trade Group Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-04-17

Abstract

The invention discloses a water-based epoxy color-changing matte floor coating and a preparation method thereof, belongs to the technical field of functional environment-friendly coatings, and comprises A, B components, wherein the A component comprises: epoxy curing agent, deionized water, defoamer, dispersant, anti-floating-color-and-flower agent, talcum powder, white carbon black, barium sulfate, base material wetting agent, CY-100 and photosensitive color-changing toner; the component B comprises: epoxy resin and aliphatic glycidyl ether. The water-based epoxy color-changing matte floor coating has the effect of absorbing harmful organic matters, has low VOC content, good skid resistance, strong adhesion of a formed paint film and excellent water resistance and solvent resistance, thereby meeting the requirements of environmental protection and individual artistic advocated by people.

Description

Waterborne epoxy color-changing matte floor coating and preparation method thereof

Technical Field

The invention relates to the technical field of functional environment-friendly coatings, in particular to a water-based epoxy color-changing matte floor coating and a preparation method thereof.

Background

The matte paint is one of all building paints which are commonly used, and the overall effect of the matte paint is darker according to the distinction of the paint film on the reflection condition (glossiness) of light rays at a specific angle, and the paint film of the matte paint after being coated is simple and elegant and is softer. The high-gloss paint is poor in stain resistance and protection, and is easy to scratch, fade and the like, so that when stains are adhered to the wall surface of the high-gloss paint, scratches are generated, the high-gloss paint is not easy to maintain, and the decorative effect is affected; the matte coating is dull in color, more resistant to dirt and abrasion, better in scratch resistance than the high-gloss coating, and easier to maintain. Thus, matte coatings are popular in many areas.

The water-based epoxy color-changing matte terrace coating has a matte effect, has high hardness, good wear resistance and excellent anti-skid property, and can be well suitable for the ground with the requirement on decorative property.

At the present stage, people have higher and higher requirements on the coating and are more and more diversified, so that the water-based epoxy color-changing matte floor coating needs to be provided, the vacancy can be made up, the problems that the floor tiles are high in gloss and do not have skid resistance and poor in overall surface effect are solved, the problem that poor-quality wood floors release formaldehyde for a long time is solved, and the ground environment can also have good decorative performance and skid resistance. The reasons for this are the following: 1. matte powder of selected matting, and system mismatch. 2. The dispersant selected by the whole system is poor in arrangement of matte or diatomite. 3. The surface drying is fast, effective substances such as matte substances are arranged quickly, the effective substances are already surface dried, and the effective substances cannot be arranged in the process. 4. Matte surface treatment, and the like.

Disclosure of Invention

The invention aims to provide a water-based epoxy color-changing matte floor coating and a preparation method thereof, and aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a water-based epoxy color-changing matte floor coating which comprises A, B components in parts by mass,

the component A comprises: 30-50 parts of epoxy curing agent, 10-20 parts of deionized water, 0.1-0.3 part of defoaming agent, 0.1-0.4 part of dispersing agent, 0.1-0.3 part of anti-floating-color-forming agent, 2-5 parts of talcum powder, 0.1-0.5 part of white carbon black, 10-20 parts of barium sulfate, 0.2-0.6 part of base material wetting agent, CY-10015-25 parts of photosensitive color-changing toner and 5-10 parts of photosensitive color-changing toner;

the component B comprises: 85-95 parts of epoxy resin and 5-15 parts of aliphatic glycidyl ether.

Further, the aliphatic glycidyl ether has a viscosity of 3 to 7 mpa-s at 40 ℃ and an epoxy equivalent of 290-310 g/eq.

Further, the epoxy resin is low molecular weight epoxy resin, the concentration is 85-95%, and preferably, the concentration of the epoxy resin is 90%.

Further, the dispersant is 750W or BYK 190; the substrate wetting agent is one or more of BYK346, Digao WET510 or pioneer PW 336.

Further, the defoaming agent is one or a combination of BYK-028, BYK-024, SN154 of nopinaceous or A10 of basf.

Furthermore, the anti-flooding and anti-floating agent is a hyper-dispersant, and the epoxy curing agent is 8B.

Further, the mass ratio of the component A to the component B is 3-10: 1.

Further, the anti-flooding and anti-floating agent is one of hyperdispersants.

When the traditional matte powder is used for construction, particularly at a joint mark of more than 10min, the change of gloss is accompanied, namely, the matte powder is changed into semi-gloss, so that the gloss of a coating film is inconsistent, and the attractiveness is influenced. Therefore, the traditional extinction powder is replaced by the CY-100, the CY-100 is not the extinction powder, the CY-100 is a novel composite material and has a small specific surface area, so that the extinction effect is achieved, the problem that the extinction powder is dynamically black in the water-based epoxy floor coating can be solved, and the CY-100 is not required to be arranged by a special dispersing agent (the extinction powder is required to be arranged by the special dispersing agent). The invention also provides a preparation method of the waterborne epoxy color-changing matte floor coating, which comprises the following steps:

(1) uniformly mixing deionized water, a defoaming agent, a dispersing agent, an anti-floating and anti-blooming agent and a base material wetting agent to obtain slurry A;

(2) adding talcum powder, white carbon black, barium sulfate and CY-100 into the slurry A, uniformly mixing to obtain slurry B,

(3) adding an epoxy curing agent and a flatting agent into the slurry B, and uniformly mixing the slurry C to obtain a component A;

(4) and diluting the epoxy resin with aliphatic glycidyl ether in an anhydrous clean container, and uniformly mixing to obtain the component B.

Further, the step (1) includes:

adding deionized water into a container, starting stirring at the rotating speed of 400-;

adding defoaming agent, dispersant and anti-floating agent into the container, and stirring for 2-5 min;

adding a base material wetting agent into the container, increasing the rotating speed to 550-650r/min, and stirring for 5min to obtain slurry A.

The invention discloses the following technical effects:

the paint film formed by the waterborne epoxy color-changing matte terrace paint can well solve the problems that the existing matte terrace paint does not have matte luster, and formaldehyde exceeds the standard due to decoration of poor matte terrace paint. The water-based epoxy color-changing matte floor coating disclosed by the invention has the advantages of no problems, the effect of absorbing harmful organic matters, low VOC content, good skid resistance, strong adhesion of a formed paint film, and excellent water resistance and solvent resistance, so that the requirements of environmental protection and individual artistic advocated by people are met.

The additive CY-100 has a small specific surface area, so that the extinction effect is achieved, the problem that extinction powder is in dynamic black floating in deionized water epoxy floor paint can be solved, special dispersing agents are not needed for arranging CY-100, and the additive CY-100 can be well matched with most epoxy systems on the market. The structure of CY-100 is oval and does not need to be arranged in the middle. (matting agents require special dispersing agents to arrange).

Detailed Description

Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.

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. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.

It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.

As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.

The "parts" in the present invention are all parts by mass unless otherwise specified.

In one aspect of the invention, the invention provides a coating, according to an embodiment of the invention, comprising: photochromic toner and CY-100. The photosensitive color-changing toner can absorb the energy of sunlight/ultraviolet rays after being irradiated by light, so that the molecular structure is changed, the absorption wavelength is changed, and the color is changed; when the energy of sunlight/ultraviolet rays is lost, the original molecular structure is restored, and the original color is reduced. The substance is used as a component of the coating, so that the coating can realize a color change effect under natural light irradiation and present different colors. Moreover, compared with the thermosensitive paint, the color-changing condition is easy to obtain, and the color change can be realized only by natural light irradiation. In addition, CY-100 is added, the traditional matte powder is changed from matte to semi-gloss along with the change of gloss at a joint mark of more than 10min during construction, so that the gloss of a coating is inconsistent, and the appearance is influenced, the CY-100 is a novel composite material, has a small specific surface area, achieves the extinction effect, can solve the problem of dynamic black floating of the extinction powder in the water-based epoxy floor coating, and does not need a special dispersant to arrange the CY-100 (the extinction powder needs the special dispersant to be arranged).

According to an embodiment of the present invention, the coating includes A, B components, in parts by mass,

Due to the addition of the photochromic toner, the water paint has high requirements on glossiness and needs to have good color saturation. Furthermore, the inventor obtains the better water paint composition and proportion through a large number of experiments, under the condition, the water paint has better color changing effect, strong adhesive force, good water resistance, good weather resistance, good washing resistance, good hand feeling, long color changing duration and the like. Specifically, the change effect of the water paint color can be changed by changing the addition amount of each material.

According to the embodiment of the invention, the viscosity of the aliphatic glycidyl ether at 40 ℃ is 3-7 mpa-s, and the epoxy equivalent is 290-310g/eq, so that the coating is endowed with better color and luster, and the color change effect is better.

According to an embodiment of the present invention, the epoxy resin is a low molecular weight epoxy resin with a concentration of 85-95%, preferably, the concentration of the epoxy resin is 90%.

According to an embodiment of the present invention, the low molecular weight epoxy resin is synthesized according to the following principle:

ring opening reaction:

condensation reaction:

ring opening reaction:

ring-closing reaction:

the cyclic process of ring opening and ring closing is carried out, and finally, the epoxy resin is reacted into macromolecules:

according to the embodiment of the invention, the dispersant is 750W or BYK190, and the dispersant can be used for uniformly dispersing all components in water, simultaneously preventing solid particles from settling and coagulating, forming a stable system, improving the HLB value of the whole coating system and enabling the performance of the whole paint film to be far higher than that of common emulsion paint on the market; the base material wetting agent is one or a combination of BYK346, digao WET510 or pioneered PW336, can effectively reduce the interfacial tension between liquid and solid, enhances the surface lyophilicity, improves the compatibility and stability between materials, obviously improves the adhesive force, and ensures that the surface smoothness of a paint film is better.

According to the embodiment of the invention, the defoaming agent is one or a combination of BYK-028, BYK-024, SN154 of Nopock or A10 of Pasteur.

According to the embodiment of the invention, the anti-flooding and anti-floating agent is a hyper-dispersant, and the epoxy curing agent is 8B.

According to the embodiment of the invention, the mass ratio of the component A to the component B is 3-10: 1.

According to an embodiment of the present invention, the anti-flooding agent is one of hyper-dispersants.

According to another aspect of the present invention, there is provided a method of preparing the above coating. According to an embodiment of the invention, the method comprises the steps of:

according to an embodiment of the present invention, step (1) comprises: adding deionized water into a container, starting stirring at the rotating speed of 400-; adding defoaming agent, dispersant and anti-floating agent into the container, and stirring for 2-5 min; adding a base material wetting agent into the container, increasing the rotating speed to 550-650r/min, and stirring for 5min to obtain slurry A.

According to the embodiment of the invention, when the coating is used, the component A and the component B are uniformly mixed according to the proportion.

The inventor finds that if all the components are mixed simultaneously, uneven mixing is easy to cause, the components cannot be dispersed fully and uniformly, the agglomeration phenomenon is easy to occur, and the paint film effect is poor. Furthermore, the inventor mixes the materials by 5 steps, so that the components are fully swelled and dispersed, no agglomeration phenomenon occurs, and the paint film effect is good.

The examples of the present invention do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specification. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

Example 1

An aqueous epoxy color-changing matte floor coating comprises A, B components in parts by mass,

the component A comprises: 30 parts of epoxy curing agent, 13 parts of deionized water, 0.2 part of defoaming agent, 0.2 part of 750W dispersing agent, 0.2 part of anti-floating-color-developing agent, 3 parts of talcum powder, 0.3 part of white carbon black, 15 parts of barium sulfate, 0.5 part of base material wetting agent, CY-10015 parts and 5 parts of photosensitive color-changing toner;

the component B comprises: 90 parts of epoxy resin and 10 parts of aliphatic glycidyl ether.

The mass ratio of the component A to the component B is 6: 1.

The aliphatic glycidyl ether has a viscosity of 5mpa · s at 40 ℃ and an epoxy equivalent of 300 g/eq.

The concentration of the epoxy resin is 90%.

The preparation method of the water-based epoxy color-changing matte floor coating comprises the following steps:

the step (1) comprises the following steps: adding deionized water into a container, starting stirring, and rotating at the speed of 450 r/min; adding defoaming agent, dispersant and anti-floating agent into the container, and stirring for 3 min; adding a base material wetting agent into the container, increasing the rotating speed to 600r/min, and stirring for 5min to obtain slurry A.

Example 2

the component A comprises: 30 parts of epoxy curing agent, 13 parts of deionized water, 0.2 part of defoaming agent, 0.2 part of 750W dispersing agent, 0.2 part of anti-floating-color-developing agent, 3 parts of talcum powder, 0.3 part of white carbon black, 15 parts of barium sulfate, 0.5 part of base material wetting agent, CY-10020 parts and 5 parts of photosensitive color-changing toner;

The mass ratio of the component A to the component B is 6: 1.

The concentration of the epoxy resin is 90%.

Example 3

the component A comprises: 30 parts of epoxy curing agent, 13 parts of deionized water, 0.2 part of defoaming agent, 0.2 part of 750W dispersing agent, 0.2 part of anti-floating-color-developing agent, 3 parts of talcum powder, 0.3 part of white carbon black, 15 parts of barium sulfate, 0.5 part of base material wetting agent, CY-10015 parts and 8 parts of photosensitive color-changing toner;

The mass ratio of the component A to the component B is 10: 1.

The concentration of the epoxy resin is 90%.

Example 4

the component A comprises: 30 parts of epoxy curing agent, 13 parts of deionized water, 0.2 part of defoaming agent, 0.2 part of 750W dispersing agent, 0.2 part of anti-floating-color-developing agent, 3 parts of talcum powder, 0.3 part of white carbon black, 15 parts of barium sulfate, 0.5 part of base material wetting agent, CY-10015 parts and 10 parts of photosensitive color-changing toner;

The mass ratio of the component A to the component B is 3: 1.

The concentration of the epoxy resin is 90%.

Example 5

the component A comprises: 30 parts of epoxy curing agent, 20 parts of deionized water, 0.1 part of defoaming agent, 0.4 part of BYK190 dispersing agent, 0.1 part of anti-floating-color-developing agent, 5 parts of talcum powder, 0.1 part of white carbon black, 20 parts of barium sulfate, 0.2 part of base material wetting agent, CY-10025 parts and 5 parts of photosensitive color-changing toner;

the component B comprises: 95 parts of epoxy resin and 5 parts of aliphatic glycidyl ether.

The mass ratio of the component A to the component B is 10: 1.

The aliphatic glycidyl ether had a viscosity of 3mpa · s at 40 ℃ and an epoxy equivalent of 310 g/eq.

The concentration of the epoxy resin is 85%.

the step (1) comprises the following steps: adding deionized water into a container, starting stirring, and rotating at the speed of 500 r/min; adding defoaming agent, dispersant and anti-floating agent into the container, and stirring for 2 min; adding a base material wetting agent into the container, increasing the rotating speed to 650r/min, and stirring for 5min to obtain slurry A.

Example 6

the component A comprises: 50 parts of epoxy curing agent, 10 parts of deionized water, 0.3 part of defoaming agent, 0.1 part of BYK190 dispersing agent, 0.3 part of anti-floating-color-forming agent, 2 parts of talcum powder, 0.5 part of white carbon black, 10 parts of barium sulfate, 0.6 part of base material wetting agent, CY-10015 parts and 10 parts of photosensitive color-changing toner;

the component B comprises: 85 parts of epoxy resin and 15 parts of aliphatic glycidyl ether.

The mass ratio of the component A to the component B is 3: 1.

The aliphatic glycidyl ether had a viscosity of 7mpa · s at 40 ℃ and an epoxy equivalent of 290 g/eq.

The concentration of the epoxy resin was 95%.

the step (1) comprises the following steps: adding deionized water into a container, starting stirring, and rotating at the speed of 400 r/min; adding defoaming agent, dispersant and anti-floating agent into the container, and stirring for 5 min; adding a base material wetting agent into the container, increasing the rotating speed to 550r/min, and stirring for 5min to obtain slurry A.

The coatings obtained in examples 1 to 6 were tested and the results are shown in Table 1:

TABLE 1

As shown in Table 1, the wear resistance of the present invention is higher, and the higher the value is, the better the wear resistance is, otherwise the worse the wear resistance is; the higher the numerical value, the worse the floating color and the better the performance.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. The water-based epoxy color-changing matte floor coating is characterized by comprising A, B components in parts by mass,

2. The waterborne epoxy color-changing matte floor coating as claimed in claim 1, wherein the aliphatic glycidyl ether has a viscosity of 3-7 mpa-s at 40 ℃ and an epoxy equivalent of 290-310 g/eq.

3. The waterborne epoxy color-changing matte floor coating according to claim 1, wherein the epoxy resin is a low molecular weight epoxy resin with a concentration of 85-95%.

4. The water-based epoxy color-changing matte floor coating as claimed in claim 1, wherein the dispersant is 750W or BYK 190; the substrate wetting agent is one or more of BYK346, Digao WET510 or pioneer PW 336.

5. The water-based epoxy color-changing matte floor coating as claimed in claim 1, wherein the defoaming agent is one or more of BYK-028, BYK-024, SN154 of Nopock or A10 of Pasteur.

6. The water-based epoxy color-changing matte floor coating according to claim 1, wherein the anti-floating color-forming agent is a hyper-dispersant, and the epoxy curing agent is 8B.

7. The water-based epoxy color-changing matte floor coating as claimed in claim 1, wherein the mass ratio of the component A to the component B is 3-10: 1.

8. The preparation method of the water-based epoxy color-changing matte floor coating of any one of claims 1-7, which is characterized by comprising the following steps:

9. The preparation method of the water-based epoxy color-changing matte floor coating according to claim 8, wherein the step (1) comprises the following steps: