CN115232509A

CN115232509A - Elastomer mixture, application thereof and self-repairing latex paint containing elastomer mixture

Info

Publication number: CN115232509A
Application number: CN202210974412.XA
Authority: CN
Inventors: 桂中秀; 裴道海; 桑莹莹; 王志鑫; 李金钟
Original assignee: ASIA PAINT (SHANGHAI) CO LTD
Current assignee: ASIA PAINT (SHANGHAI) CO LTD
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2022-10-25

Abstract

The invention provides an elastomer mixture, application thereof and a self-repairing latex paint containing the same, and relates to the technical field of latex paints. The elastomer mixture is mainly prepared by uniformly mixing polyrotaxane microcapsule polymer and elastic emulsion; wherein the polyrotaxane microcapsule polymer comprises a core material and a wall material; the core material is cyclodextrin polyrotaxane, and the wall material comprises at least one of sodium alginate, gelatin, carrageenan, maltodextrin, chitosan, hydroxymethyl cellulose and acrylic resin. The polyrotaxane microcapsule polymer is mixed with elastic emulsion and then is crosslinked to prepare an elastomer mixture which is an elastomer mixture material based on double crosslinking of hydrogen bonds and polyrotaxane, and after the material is distributed in an emulsion paint coating system, when a coating is damaged, the polyrotaxane microcapsule polymer releases active substances cyclodextrin polyrotaxane, so that the defects of the coating are repaired.

Description

Elastomer mixture, application thereof and self-repairing latex paint containing elastomer mixture

Technical Field

The invention relates to the technical field of emulsion paint coatings, in particular to an elastomer mixture, application thereof and a self-repairing emulsion paint coating containing the elastomer mixture.

Background

With the increase of the service time of the wall surface, the latex paint wall surface inevitably generates local damage and microcracks in the use process, and the use and the appearance are influenced. The traditional method for repairing the paint film is to recoat the paint film, so that the time, the labor and the materials are consumed, and the cost is high. Although a plurality of self-repairing methods exist in the current industrial coatings, if cracks are generated after the emulsion paint is coated on the building wall surface, the cracks are generally large and are difficult to solve by the coatings, so that the self-repairing materials in the existing emulsion paint are few.

Therefore, it is necessary and urgent to develop a self-repairing latex paint to alleviate the problems of the existing repairing method that the cracks of the wall are covered by re-coating the wall, which results in the loss of manpower and material resources.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

It is a first object of the present invention to provide an elastomer mixture which, after distribution in a latex paint coating system, releases the active material cyclodextrin polyrotaxane when the coating is damaged, allowing repair of coating defects.

The second purpose of the invention is to provide the application of the elastomer mixture, and the elastomer mixture can be widely applied to the preparation process of the self-repairing latex paint.

The third purpose of the invention is to provide a self-repairing latex paint coating, which can automatically repair the crack damage caused by the internal or external damage of the wall surface without human participation, and recoat the crack of the wall surface to cover.

The fourth purpose of the invention is to provide a preparation method of the self-repairing latex paint coating.

In order to achieve the above purpose of the present invention, the following technical solutions are adopted:

the invention provides an elastomer mixture, which is mainly prepared by uniformly mixing a polyrotaxane microcapsule polymer and an elastic emulsion, wherein:

the polyrotaxane microcapsule polymer comprises a core material and a wall material; the core material is cyclodextrin polyrotaxane, and the wall material comprises at least one of sodium alginate, gelatin, carrageenan, maltodextrin, chitosan, hydroxymethyl cellulose and acrylic resin.

Further, the Tg value of the elastic emulsion is-20-0 ℃, and the MFFT is 0-10 ℃;

preferably, the elastic lotion comprises at least one of BLJ-9741, BLJ-9466M, BLJ-8905, ROSF-5588, or RS-9399.

Further, the elastomer mixture also comprises an emulsifier, wherein the emulsifier comprises at least one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate;

preferably, the mass ratio of the polyrotaxane microcapsule polymer to the elastic emulsion to the emulsifier in the elastomer mixture is 2-5: 5 to 15:1 to 5.

The invention provides an application of the elastomer mixture in preparation of a self-repairing latex paint.

The invention provides a self-repairing latex paint coating which comprises the following components in parts by weight:

5 to 20 parts of emulsion, 10 to 20 parts of elastomer mixture, 5 to 30 parts of water, 0.2 to 10 parts of auxiliary agent and 0 to 40 parts of pigment and filler.

Further, the properties of the emulsion at least satisfy at least one of the following:

the minimum film forming temperature is 5-45 deg.C, pH is 7.5-9.0, and viscosity is 100-900 mPa.S at 23-27 deg.C.

Preferably, the emulsion comprises RS-926W, RS-5969, RS-5063, and,

8119. Or

8120.

Further, the auxiliary agent comprises at least one of a film forming agent, a dispersing agent, a wetting agent, a pH regulator, a defoaming agent, a thickening agent, a bactericide and a mildew preventive;

preferably, the filler in the pigment and filler comprises any one of rutile type titanium dioxide, mica powder, talcum powder, wollastonite or ground calcium carbonate.

Further, the self-repairing latex paint coating comprises the following components in parts by weight:

5 to 20 parts of emulsion, 10 to 20 parts of elastomer mixture, 5 to 30 parts of water, 2 to 3 parts of film forming additive, 0.5 to 1.5 parts of dispersant, 0.5 to 1.0 part of wetting agent, 0.1 to 0.3 part of pH regulator, 0.2 to 0.5 part of defoamer, 0.5 to 1.5 parts of thickener, 0.1 to 0.5 part of bactericide, 0.1 to 0.3 part of mildew preventive, 0 to 30 parts of rutile titanium dioxide, wherein the weight is not 0 part, and 1 to 30 parts of filler.

The invention provides a preparation method of the self-repairing latex paint coating, which comprises the following steps:

and uniformly mixing the raw materials to obtain the self-repairing latex paint.

Further, the preparation method comprises the following steps:

(a) Stirring and mixing water, a dispersing agent, a wetting agent, a pH regulator, a part of defoaming agent, a part of bactericide and pigment filler to obtain slurry A;

(b) And stirring and mixing the slurry A with the emulsion, the elastomer mixture material, the film-forming agent, the mildew preventive, the thickening agent, the rest bactericide and the rest defoamer to obtain the self-repairing emulsion paint coating.

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

the elastomer mixture provided by the invention is mainly prepared by uniformly mixing a polyrotaxane microcapsule polymer and an elastic emulsion; wherein the polyrotaxane microcapsule polymer comprises a core material and a wall material; the core material is cyclodextrin polyrotaxane, and the wall material comprises at least one of sodium alginate, gelatin, carrageenan, maltodextrin, chitosan, hydroxymethyl cellulose and acrylic resin. The polyrotaxane microcapsule polymer is mixed with elastic emulsion and then is crosslinked to prepare an elastomer mixture which is an elastomer mixture material based on double crosslinking of hydrogen bonds and polyrotaxane, and after the material is distributed in an emulsion paint coating system, when a coating is damaged, the polyrotaxane microcapsule polymer releases active substances cyclodextrin polyrotaxane, so that the defects of the coating are repaired.

Specifically, the polyrotaxane is a bead chain molecule formed by containing a plurality of cyclic molecules, and an internal locking host-guest supermolecule system formed by blocking by a bulky group plug can be freely linked into a free network. The polyrotaxane in the system can slide in the stretching process, so that the material has excellent stretching and self-repairing performances; meanwhile, after the elastomer mixture is distributed in the emulsion paint, a coating system also contains a large number of hydrogen bonds, and the self-repairing performance of the material is also ensured.

The elastomer mixture provided by the invention can be widely applied to the preparation process of the self-repairing latex paint.

The self-repairing latex paint coating provided by the invention is mainly prepared from emulsion, an elastomer mixture, water, an auxiliary agent and pigment and filler in a specific ratio. Due to the self-repairing performance of the elastomer mixture, the self-repairing latex paint can automatically repair the crack damage caused by the internal or external damage of the wall surface without human participation, and can be recoated to cover the crack of the wall body.

The preparation method of the self-repairing latex paint provided by the invention comprises the step of uniformly mixing the raw materials to obtain the self-repairing latex paint. The preparation method has the advantages of simple processing technology and easy operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic 3D representation of a polyrotaxane;

FIG. 2 is a schematic diagram of a polyrotaxane self-repair mechanism.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to one aspect of the present invention, an elastomer mixture is prepared by blending a polyrotaxane microcapsule polymer and an elastic emulsion, wherein:

Specifically, fig. 1 is a schematic diagram of a 3D structure of polyrotaxane; polyrotaxanes are bead chain molecules formed by a plurality of cyclic molecules, and an internal locking host-guest supermolecule system formed by end capping by a bulky group plug can be freely linked into a free network. The polyrotaxane in the system slides in the stretching process, so that the material has excellent stretching and self-repairing performance; meanwhile, after the elastomer mixture is distributed in the emulsion paint, a coating system also contains a large number of hydrogen bonds, and the self-repairing performance of the material is also ensured.

It should be noted that the self-repairing mechanism of the polyrotaxane is reversible covalent bond and non-covalent bond, and the self-repairing mechanism of the polyrotaxane is shown in fig. 2.

FIG. 2 is a schematic illustration of a polyrotaxane self-repair mechanism; referring to fig. 2, when the chain molecules are subjected to external force (i) → valence bond deformation and activated (ii) → valence bond cleavage (iii) → rearrangement, repair of the damaged portion (IV) → valence bond reconnection returns to the original state (v).

The invention utilizes insoluble polymer to coat the cyclodextrin polyrotaxane, so that the performance of the polyrotaxane is not influenced by the external environment, the weather resistance of the polyrotaxane is improved, and the self-repairing capability of the polyrotaxane is further improved; in addition, the slow release rate of the polyrotaxane in use is controlled by controlling the degree of tightness of the polymer coating. Meanwhile, the polyrotaxane monomer is wrapped in the capsule, when the wall crack meets the microcapsule, the microcapsule is broken, and the polyrotaxane monomer flows out and repairs the crack, so that the polyrotaxane monomer is reversible self-repairing and is also called internal repairing. This process is generally formed by the bond type of the material itself and its associated reactions.

The reason why the wall material is preferably acrylic resin and the wall material of the polyrotaxane microcapsule polymer is preferably acrylic resin is that many of the current coating systems are acrylic, and the polyrotaxane polymer formed by coating the acrylic resin has better compatibility with the coating when being used in the coating, so that the performance of the system is improved.

In a preferred embodiment of the invention, the elastic emulsion has a Tg of-20 to 0 ℃ and a MFFT of 0 to 10 ℃;

preferably, the elastomeric emulsion comprises at least one of BLJ-9741, BLJ-9466M, BLJ-8905, ROSF-5588, or RS-9399.

In a preferred embodiment of the present invention, the elastomer mixture further comprises an emulsifier, wherein the emulsifier comprises at least one of sodium dodecylbenzene sulfonate and sodium dodecylbenzene sulfonate;

in the above preferred embodiment, the mass ratio of the polyrotaxane microcapsule polymer, the elastic emulsion and the emulsifier in the elastomer mixture is 2 to 5:5 to 15:1 to 5.

It should be noted that, the source of the polyrotaxane microcapsule polymer is not limited in the present invention, and various raw materials well known to those skilled in the art can be used; if it is commercially available, it can be prepared by itself by a method known to those skilled in the art.

Preferably, the polyrotaxane microcapsule polymer is purchased from highland barley new material, and the mark is polyacrylate polymer sealed cyclodextrin polyrotaxane;

preferably, the preparation method of the polyrotaxane microcapsule polymer comprises the following steps: and (3) uniformly dispersing the emulsifier and the polymer wall material in water to obtain an emulsifier dispersion solution, performing solid-liquid separation on a product after temperature control reaction, and drying residual solvent in a solid precipitate to obtain the polyrotaxane microcapsule polymer.

According to one aspect of the invention, the use of the elastomer mixture described above in the preparation of a self-healing latex paint coating.

According to one aspect of the invention, the self-repairing latex paint coating comprises the following components in parts by weight:

Typical but non-limiting preferred embodiments of the above emulsions are: 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts and 20 parts; typical but non-limiting preferred embodiments of the above elastomer mixtures are: 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts and 20 parts; typical but non-limiting preferred embodiments of the above water are: 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts and 20 parts; typical but non-limiting preferred embodiments of the above auxiliaries are: 5 parts, 8 parts, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts and 30 parts; typical but non-limiting preferred embodiments of the above pigments and fillers are: 0 part, 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts and 40 parts.

In a preferred embodiment of the invention, the properties of the emulsion at least satisfy at least one of the following:

the minimum film forming temperature is 5-45 ℃, the pH is 7.5-9.0, and the viscosity is 100-900 mPa.S at the temperature of 23-27 ℃;

preferably, the emulsion comprises RS-926W, RS-5969, RS-5063, and,

8119. Or

8120.

In a preferred embodiment, the emulsion is used in combination with an elastic emulsion of a soft monomer, which effectively strengthens the paint film.

In a preferred embodiment of the present invention, the auxiliary agent includes at least one of a film-forming agent, a dispersing agent, a wetting agent, a pH adjuster, a defoaming agent, a thickener, a bactericide, and a mildewcide;

As a preferred embodiment, the filler comprises any one or more of rutile type titanium dioxide, mica powder, talcum powder, wollastonite or ground calcium carbonate, wherein the mica powder and the talcum powder are in a sheet structure, the wollastonite is in a needle shape, and has better affinity with the emulsion. In addition, the filler also has acid and alkali resistance, and can effectively improve the tolerance of a paint film. The rutile titanium dioxide can improve the covering power of the coating.

Preferably, the film-forming aid is present in an amount of 2 to 3 parts by weight, for example 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts, 3 parts. Preferably, the functional assistant is 0.2-5 parts by weight, such as 0.5 part, 1 part, 2 parts, 3 parts, 4 parts. Preferably, the dispersant is present in an amount of 0.5 to 1.5 parts by weight, such as 0.6 parts, 0.8 parts, 1 part, 1.2 parts, 1.4 parts. Preferably, the wetting agent is present in an amount of 0.5 to 1.0 parts by weight, such as 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts. Preferably, the pH adjuster is present in an amount of 0.1 to 0.3 parts by weight, such as 0.15 parts, 0.2 parts, 0.25 parts. Preferably, the defoamer is present in an amount of 0.2 to 0.5 parts by weight, such as 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, 0.45 parts. Preferably, the thickener is present in an amount of 0.5 to 1.5 parts by weight, such as 0.6 parts, 0.8 parts, 1 part, 1.2 parts, 1.4 parts. Preferably, the bactericide is present in an amount of 0.1 to 0.5 parts by weight, for example 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts. Preferably, the rutile type titanium dioxide is 0-30 parts by weight and not 0 parts, such as 5 parts, 10 parts, 15 parts, 20 parts, 25 parts. Preferably, the filler is present in an amount of 1 to 30 parts by weight, such as 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts.

In a preferred embodiment of the invention, the self-repairing latex paint coating comprises the following components in parts by weight:

5 to 20 parts of emulsion, 10 to 20 parts of elastomer mixture, 5 to 30 parts of water, 2 to 3 parts of film forming additive, 0.5 to 1.5 parts of dispersant, 0.5 to 1.0 part of wetting agent, 0.1 to 0.3 part of pH regulator, 0.2 to 0.5 part of defoamer, 0.5 to 1.5 parts of thickener, 0.1 to 0.5 part of bactericide, 0.1 to 0.3 part of mildew preventive, 0 to 30 parts of rutile titanium white powder, wherein the weight is not 0 part, and 1 to 30 parts of filler.

As a preferred embodiment, the weight portion of the elastomer mixture material in the coating is 10-20 parts, and the elastomer mixture material in the range enables the coating to have excellent fine crack self-repairing performance without losing other performances.

Meanwhile, the titanium dioxide can provide the white color of the paint and the covering power of a wet film and a dry film. The addition amount of the titanium dioxide can be gradually increased from 0 to light base.

According to one aspect of the invention, the preparation method of the self-repairing latex paint coating comprises the following steps:

The preparation method of the self-repairing latex paint coating provided by the invention comprises the step of uniformly mixing the raw materials to obtain the self-repairing latex paint coating. The preparation method has the advantages of simple processing technology and easy operation.

In a preferred embodiment of the present invention, the preparation method comprises the steps of:

(b) And stirring and mixing the slurry A with the emulsion, the elastomer mixture material, the film-forming agent, the mildew preventive, the thickening agent, the rest bactericide and the rest defoamer to obtain the self-repairing latex paint.

Preferably, the rotational speed of the stirring and mixing in step (1) is 1500-2000r/min, such as 1600 r/min, 1700r/min, 1800r/min, 1900r/min.

Preferably, the rotational speed of the stirring and mixing in step (2) is 400-600r/min, such as 450 r/min, 500r/min, 550r/min.

Preferably, the mass percentage of the first defoaming agent is 30 to 50%, for example 35%, 40%, 45%, based on the total weight of the defoaming agent being 100%. Preferably, the second defoamer is present in a mass percentage of 50-70%, such as 55%, 60%, 65%, based on the total weight of the defoamer taken as 100%. Preferably, the mass percentage of the first bactericide is 30-50%, for example 35%, 40%, 45%, based on the total weight of the bactericide being 100%. Preferably, the second biocide is present in an amount of 50 to 70% by weight, for example 55%, 60%, 65% by weight, based on 100% by weight of the total biocide.

The technical solution of the present invention will be further described with reference to the following examples.

Note: the raw material types and purchase information used in the following examples of the present application are as follows:

example 1

An elastomer mixture comprising, in parts by mass: 2 parts of polyrotaxane microcapsule polymer, 5 parts of elastic emulsion and 1 part of emulsifier.

The preparation method of the elastomer mixture comprises the following steps: and fully and uniformly mixing the polyrotaxane microcapsule polymer, the elastic emulsion and the emulsifier to prepare an elastomer mixture.

Example 2

An elastomer mixture comprising, in parts by mass: 5 parts of polyrotaxane microcapsule polymer, 15 parts of elastic emulsion and 5 parts of emulsifier.

The preparation method of the elastomer mixture comprises the following steps: and fully and uniformly mixing the polyrotaxane microcapsule polymer, the elastic emulsion and the emulsifier to prepare the elastomer mixture.

Example 3

An elastomer mixture comprising, in parts by mass: 3 parts of polyrotaxane microcapsule polymer, 8 parts of elastic emulsion and 3 parts of emulsifier.

Examples 4 to 12

The self-repairing latex paint coating comprises the following components in parts by weight:

the preparation method comprises the following steps:

(a) Stirring and mixing water, a dispersing agent, a wetting agent, a pH regulator, 50% of a defoaming agent, 50% of a bactericide and a pigment filler to obtain slurry A;

Comparative example 1

An elastomer mixture was obtained in the same manner as in example 3 except that in this comparative example, "the elastic emulsion was replaced with an equal mass of a non-elastic emulsion (available from BATF under the trade name RS-5969), and the elastomer mixture material was not previously blended to prepare a mixture material".

Comparative example 2

An elastomer mixture comprising, in parts by mass: 8 parts of elastic emulsion and 3 parts of emulsifier.

The preparation method of the elastomer mixture comprises the following steps: and fully and uniformly mixing the elastic emulsion and the emulsifier to prepare an elastomer mixture.

Comparative example 3

Comparative example this comparative example is the same as example 4 except that the elastomer mixture obtained in example 3 was replaced with the elastomer mixture obtained in comparative example 1.

Comparative example 4

This comparative example is the same as example 4 except that the elastomer mixture obtained in example 3 was replaced with the elastomer mixture obtained in comparative example 2.

Experimental example 1

In order to show that the self-repairing latex paint coating prepared by the method has better tensile strength, elongation at break and self-repairing performance, the self-repairing latex paint coatings prepared in the embodiments 4-12 and the comparative examples 3 and 4 are subjected to performance detection, and the specific detection method is as follows:

scratching a coating with the thickness of about 1cm by using a pencil with the hardness of 6H on the surface of the prepared paint film, observing the self-repairing degree of the coating after 24 hours, and evaluating the self-repairing degree of the coating by rating results, wherein the self-repairing degree is divided into 0 grade, 1 grade, 2 grade, 3 grade, 4 grade and 5 grade, and the grade is from small to large, and the self-repairing scratched part is better to repair.

The specific detection results are as follows:

finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An elastomer mixture, wherein the elastomer mixture is prepared by mixing a polyrotaxane microcapsule polymer and an elastic emulsion, wherein:

2. Elastomer mixture according to claim 1, characterized in that the elastic emulsion has a Tg value of-20 to 0 ℃ and a MFFT value of 0 to 10 ℃;

3. The elastomer mixture of claim 1, further comprising an emulsifier, wherein the emulsifier comprises at least one of sodium dodecylbenzene sulfonate and sodium dodecylbenzene sulfonate;

preferably, the mass ratio of the polyrotaxane microcapsule polymer, the elastic emulsion and the emulsifier in the elastomer mixture is 2-5: 5 to 15:1 to 5.

4. Use of the elastomer mixture of any one of claims 1 to 3 in the preparation of a self-healing latex paint coating.

5. The self-repairing latex paint coating is characterized by comprising the following components in parts by weight:

5-20 parts of emulsion, 10-20 parts of elastomer mixture according to any one of claims 1-3, 5-30 parts of water, 0.2-10 parts of auxiliary agent and 0-40 parts of pigment and filler.

6. The self-healing latex paint coating of claim 5, wherein said emulsion exhibits at least one of the following properties:

the lowest film forming temperature is 5-45 ℃, the pH is 7.5-9.0, and the viscosity is 100-900 mPa.S at the temperature of 23-27 ℃;

preferably, the emulsion comprises RS-926W, RS-5969, RS-5063, and,

8119 or

8120.

7. The self-repairing latex paint coating of claim 5, wherein said auxiliary agents include at least one of film formers, dispersants, wetting agents, pH adjusters, defoamers, thickeners, biocides, and mildewcides;

8. The self-repairing latex paint coating of claim 5, wherein the self-repairing latex paint coating comprises, in parts by weight:

5-20 parts of emulsion, 10-20 parts of elastomer mixture according to any one of claims 1-3, 5-30 parts of water, 2-3 parts of film-forming assistant, 0.5-1.5 parts of dispersant, 0.5-1.0 part of wetting agent, 0.1-0.3 part of pH regulator, 0.2-0.5 part of defoaming agent, 0.5-1.5 parts of thickener, 0.1-0.5 part of bactericide, 0.1-0.3 part of mildew inhibitor, 0-30 parts but not 0 part of rutile titanium dioxide and 1-30 parts of filler.

9. The preparation method of the self-repairing latex paint coating according to any one of claims 5 to 8, characterized by comprising the following steps:

10. The method for preparing the self-repairing latex paint coating of claim 9, wherein the method comprises the following steps: