阅读说明：本技术 适用于混凝土的色差调整材及其制备方法和应用 (Chromatic aberration adjusting material suitable for concrete and preparation method and application thereof ) 是由 石小成 姚国友 金鑫 刘汉虎 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种适用于混凝土的色差调整材,包括底涂料、中涂料和面涂料,所述底涂料、中涂料和面涂料用于在混凝土表面由内向外依次形成底涂层、中涂层和面涂层；所述底涂料为防水涂料；所述中涂料包括纯丙乳液以及色浆,所述色浆用于在形成所述中涂层时进行调色,所述面涂料包括硅树脂乳液。本发明中适用于混凝土的色差调整材,通过底涂料、中涂料、面涂料形成的底涂层、中涂层以及面涂层之间的结合协同作用,使得色差调整材形成的涂层能够达到防水、耐候性优良、耐磨等诸多优良的性能,且能够与待处理混凝土的表面颜色相匹配。(The invention discloses a chromatic aberration adjusting material suitable for concrete, which comprises a bottom coating, a middle coating and a top coating, wherein the bottom coating, the middle coating and the top coating are used for sequentially forming a bottom coating, a middle coating and a top coating on the surface of the concrete from inside to outside; the primer is a waterproof coating; the middle coating comprises pure acrylic emulsion and color paste, the color paste is used for color mixing when the middle coating is formed, and the surface coating comprises silicon resin emulsion. The color difference adjusting material is suitable for the concrete, and the coating formed by the color difference adjusting material can achieve various excellent performances such as water resistance, weather resistance and wear resistance through the combined synergistic effect among the base coating, the middle coating and the top coating formed by the base coating, the middle coating and the top coating, and can be matched with the surface color of the concrete to be treated.)

1. The color difference adjusting material is characterized by comprising a bottom coating, a middle coating and a top coating, wherein the bottom coating, the middle coating and the top coating are used for sequentially forming a bottom coating, a middle coating and a top coating on the surface of concrete from inside to outside; the primer is a waterproof coating; the middle coating comprises pure acrylic emulsion and color paste, the color paste is used for color mixing when the middle coating is formed, and the surface coating comprises silicon resin emulsion.

2. The color difference adjusting material according to claim 1, wherein the middle coating comprises water, pigment, filler, film forming aid, color paste, additive and pure acrylic emulsion, and the mass ratio of the pure acrylic emulsion in the middle coating is 25-35%.

3. The color difference adjusting material according to claim 2, wherein the additive in the intermediate coating comprises a cellulose thickener, a dispersant, a defoamer, a substrate wetting agent, a mildew and algae inhibitor and an antifreeze; the medium coating comprises the following raw material components in parts by weight: 20-25 parts of deionized water, 0.2-0.5 part of cellulose thickener, 0.3-0.8 part of dispersant, 0.3-0.6 part of defoamer, 0.05-0.15 part of base material wetting agent, 15-25 parts of pigment, 15-25 parts of filler, 2-3 parts of film-forming assistant, 1.5-2.5 parts of antifreeze, 25-35 parts of pure acrylic emulsion, 0.1-0.3 part of mildew-proof algaecide and 0.5-3 parts of color paste.

4. The color difference adjusting material according to claim 1, wherein the topcoat material comprises water, a film forming aid, a wax emulsion, an additive and a silicone emulsion, and the silicone emulsion is present in the topcoat material in an amount of 30 to 50% by mass.

5. The color difference adjusting material as claimed in claim 4, wherein the additives in the top coating comprise multifunctional additives, thickeners, mildewproof and algaecide, antifoaming agents, substrate wetting agents and antifreezing agents; the top coating comprises the following raw material components in parts by weight: 30-50 parts of silicone resin emulsion, 0.5-1 part of antifreeze, 3-6 parts of film-forming additive, 0.1-0.3 part of multifunctional additive, 0.05-0.15 part of base material wetting agent, 0.2-0.6 part of thickener, 0.1-0.3 part of mildew-proof algicide, 0.05-0.2 part of defoamer, 2-5 parts of wax emulsion and 40-60 parts of deionized water.

6. The color difference adjusting material according to claim 5, wherein the thickener is formed by mixing a polyurethane thickener and a leveling thickener.

7. The color difference adjusting material according to claim 1, wherein the primer comprises the following raw material components in parts by weight: 30-40 parts of sodium silicate, 0.05-0.15 part of surfactant, 0-1 part of reaction retarder, 0.1-0.2 part of reducing agent, 0-5 parts of reaction promoter, 0.06-0.1 part of anti-freezing agent, 0.1-0.3 part of metal ion locking agent, 0.4-0.8 part of surface enhancer, 0.2-0.4 part of antirust agent and 53-69 parts of deionized water.

8. A method for producing a color difference adjusting material according to any one of claims 1 to 7, comprising the steps of,

(1) preparation of the primer: adding a surfactant, a reaction retarder, a reducing agent, a reaction promoter, an anti-freezing agent, a metal ion blocking agent, a surface enhancer and an antirust agent into water under stirring to prepare a mixed solution; adding a sodium silicate aqueous solution prepared from sodium silicate into the mixed solution, and uniformly stirring to obtain the primer;

(2) preparation of the medium coating: adding a cellulose thickener into water while stirring to thicken liquid, then adding a dispersing agent, a defoaming agent, a base material wetting agent and a mildew-proof and algae-proof agent, uniformly stirring, adding a pigment and a filler, dispersing until the mixture is uniform and free of particles, adding a pure acrylic emulsion, uniformly stirring, and finally adding color paste according to the color of the concrete to be treated to perform color matching to obtain the intermediate coating;

(3) preparing a top coating: under stirring, adding the defoaming agent, the base material wetting agent, the mildew-proof algaecide and the multifunctional auxiliary agent into water, stirring uniformly, then adding the silicone resin emulsion, stirring until the liquid is uniform, adding the film-forming auxiliary agent and the antifreezing agent, stirring uniformly, adding the wax emulsion, stirring uniformly, adding the thickening agent, and stirring uniformly to obtain the top coating.

9. Use of the chromatic aberration adjusting material for concrete according to any one of claims 1 to 7 in the surface treatment of concrete.

10. The application of the chromatic aberration adjusting material in the concrete surface treatment according to claim 9, which comprises a construction method of the chromatic aberration adjusting material in the concrete surface treatment, and comprises the following steps:

polishing and flattening the surface of the concrete, and then sequentially spraying a primary coating, a secondary coating and a surface coating to sequentially form a primary coating, a secondary coating and a surface coating on the surface of the concrete from inside to outside;

and before spraying the intermediate coating, color paste is adopted to carry out color mixing on the intermediate coating, so that the intermediate coating has a color matched with the concrete to be constructed.

Technical Field

The invention relates to the technical field of concrete and paint, in particular to a special chromatic aberration adjusting material for fair-faced concrete, a preparation method of the chromatic aberration adjusting material and application of the chromatic aberration adjusting material in concrete surface treatment.

Background

At present, the concrete is the material with the largest use amount in infrastructure construction, the use amount is more than hundreds of millions of cubic meters every year, the concrete is visible everywhere in our daily life, and the most common is municipal road construction, such as bridges, road beds, road isolation piers and the like. Because the concrete is not prepared properly, the construction is not in place and some defects of the concrete material are caused, some defects often appear in the structural concrete, which is mainly expressed as: 1. the concrete belongs to a porous substance, has micropores, is not waterproof, is very easy to absorb water to cause the color to become dark after raining, has poor self-cleaning performance, is easy to become dirty, and can grow moss and other substances to influence the appearance; 2. concrete belongs to an alkaline substance, and the alkalinity of the concrete is difficult to maintain due to continuous erosion of rainwater, air and ultraviolet rays along with the lapse of time, so that the strength is reduced, the durability is deteriorated, even water vapor enters into internal corrosion steel bars of the concrete to cause surface rusty spots, steel bar rusting and concrete cracking, the appearance is attractive, and potential safety hazards are brought; 3. when concrete is poured in situ, great requirements are placed on construction technology and field control force, the problems of chromatic aberration, alkali return, cold joints, honeycombs and the like often occur due to long pouring time, long construction period and uncertainty of the site, and although the defects do not directly affect the bearing capacity and durability of a concrete structure, the attractiveness of the structure is seriously affected. All the concrete buildings are necessary to be repaired, coated and protected from water.

In order to solve the problems, the Chinese invention patent of application number 201310059502.7 in the prior art discloses 'a coating for protecting fair-faced concrete and a construction process thereof', but the coating can only fill larger cracks and defect parts, cannot ensure the color uniformity of concrete infrastructure, has high construction difficulty, can also cause the problems of cracking and the like, and is difficult to ensure the quality of later-period coatings.

Therefore, it is urgently needed to develop a special color difference adjusting material for concrete, which has the advantages of simple operation, high coating quality, waterproof protection function and beautiful concrete structure.

Disclosure of Invention

In view of the above, in order to overcome the defects of the prior art, the present invention aims to provide a chromatic aberration adjusting material special for concrete, and a preparation method and an application of the chromatic aberration adjusting material.

In order to achieve the purpose, the invention adopts the following technical scheme:

the color difference adjusting material suitable for concrete comprises a base coating, a middle coating and a top coating, wherein the base coating, the middle coating and the top coating are used for sequentially forming a base coating, a middle coating and a top coating on the surface of the concrete from inside to outside; the primer is a waterproof coating; the middle coating comprises pure acrylic emulsion and color paste, the color paste is used for color mixing when the middle coating is formed, and the surface coating comprises silicon resin emulsion.

The primer adopts a waterproof material in the patent application number 201710111284.5 name of 'a reaction speed controllable water-based permeable crystallization type waterproof material and a preparation method and application thereof'; the acrylic emulsion is adopted in the middle coating, so that the middle coating has excellent freeze-thaw stability, calcium ion stability, water resistance, alkali resistance, stain resistance and excellent weather resistance, is suitable for high weather resistance exposed coatings, has good weather resistance and alkali resistance, and can seal the alkali for various concrete base surface substrates to prevent water dissolution and consequent peeling; the color paste in the middle coating is used for adjusting the color difference adjusting material to a color matched with the surface of the concrete to be treated; the surface coating adopts the silicone resin emulsion, and has the characteristics of water whitening resistance, hydrophobicity, ultraviolet yellowing resistance, higher wear resistance and the like. The color difference adjusting material can form a coating which can achieve a plurality of excellent performances such as water resistance, weather resistance and wear resistance through the combined synergistic effect among the base coating, the middle coating and the top coating, and the base coating, the middle coating and the top coating are formed by the base coating, the middle coating and the top coating, and can be matched with the surface color of the concrete to be treated.

According to some preferred implementation aspects of the invention, the middle coating comprises water, pigments, fillers, film-forming aids, color pastes, additives and pure acrylic emulsion, wherein the mass ratio of the pure acrylic emulsion in the middle coating is 25-35%.

According to some preferred embodiments of the invention, the additives in the medium coating include cellulose thickeners, dispersants, defoamers, substrate wetting agents, mildewcides, algaecides, and antifreezes; the medium coating comprises the following raw material components in parts by weight: 20-25 parts of deionized water, 0.2-0.5 part of cellulose thickener, 0.3-0.8 part of dispersant, 0.3-0.6 part of defoamer, 0.05-0.15 part of base material wetting agent, 15-25 parts of pigment, 15-25 parts of filler, 2-3 parts of film-forming assistant, 1.5-2.5 parts of antifreeze, 25-35 parts of pure acrylic emulsion, 0.1-0.3 part of mildew-proof algaecide and 0.5-3 parts of color paste.

According to some preferred embodiment aspects of the present invention, the topcoat includes water, a film-forming aid, a wax emulsion, an additive, and a silicone emulsion, and the silicone emulsion is present in the topcoat in a mass ratio of 30 to 50%.

According to some preferred embodiments of the present invention, the additives in the topcoat include multifunctional auxiliaries, thickeners, mildewcides and algaecides, defoamers, substrate wetting agents and antifreeze agents; the top coating comprises the following raw material components in parts by weight: 30-50 parts of silicone resin emulsion, 0.5-1 part of antifreeze, 3-6 parts of film-forming additive, 0.1-0.3 part of multifunctional additive, 0.05-0.15 part of base material wetting agent, 0.2-0.6 part of thickener, 0.1-0.3 part of mildew-proof algicide, 0.05-0.2 part of defoamer, 2-5 parts of wax emulsion and 40-60 parts of deionized water.

According to some preferred embodiments of the present invention, the thickener is a mixture of a polyurethane thickener and a leveling thickener. The polyurethane thickener RM 12W and the leveling thickener RM 2020 are preferably compounded and used in Rohm and Haas, and the polyurethane thickener RM 12W and the leveling thickener RM 2020 are preferably compounded according to the mass ratio of 1:1, so that the viscosity stability, the water whitening resistance and the leveling property of the coating are ensured.

The raw materials in the middle coating and the top coating are as follows: the cellulose thickener is 250HBR hydroxyethyl cellulose and is used for improving the viscosity and stability of the coating and the suspension property of powder;

the dispersant is a sodium polycarboxylate dispersant SN-5040 of the Japan Sannopopu family, has wetting and dispersing effects, and is used for improving the fluidity of the coating and the dispersibility of powder; the defoaming agent is a Basf aqueous defoaming agent Foam Star 2410AC, and has a quicker defoaming effect; the substrate wetting agent is a digao Tego 270 wetting agent, has a wetting effect on a base surface, has an excellent anti-shrinkage effect and improves the leveling property of the coating; the pigment is rutile type titanium dioxide R-706 of DuPont, and has excellent durability and covering power; the filler is 1250-mesh mica powder and/or 1250-mesh coarse whiting powder; the film-forming additive is twelve alcohol esters, so that the film-forming effect of the coating is improved, and the minimum film-forming temperature is effectively reduced; the antifreezing agent is glycol, so that the antifreezing property of the coating is improved, the freeze-thaw resistance is improved, and the durability is improved; the mildew-proof algaecide is Kaysolor At 9097 mildew-proof algaecide; the multifunctional auxiliary agent is AMP-95 multifunctional auxiliary agent, can provide dispersibility and adjust the pH value to achieve the thickening effect; the wax emulsion is BYK A QUACER 539, and is used for improving the water resistance of the coating and improving the hand feeling, wear resistance and anti-sticking effect of the coating.

According to some preferred embodiments of the present invention, the primer comprises the following raw material components in parts by weight: 30-40 parts of sodium silicate, 0.05-0.15 part of surfactant, 0-1 part of reaction retarder, 0.1-0.2 part of reducing agent, 0-5 parts of reaction promoter, 0.06-0.1 part of anti-freezing agent, 0.1-0.3 part of metal ion locking agent, 0.4-0.8 part of surface enhancer, 0.2-0.4 part of antirust agent and 53-69 parts of deionized water.

The invention also provides a preparation method of the chromatic aberration adjusting material, which comprises the following steps,

(1) preparation of the primer: adding a surfactant, a reaction retarder, a reducing agent, a reaction promoter, an anti-freezing agent, a metal ion blocking agent, a surface enhancer and an antirust agent into water under stirring to prepare a mixed solution; adding a sodium silicate aqueous solution prepared from sodium silicate into the mixed solution, and uniformly stirring to obtain the primer;

(2) preparation of the medium coating: adding a cellulose thickener into water while stirring to thicken liquid, then adding a dispersing agent, a defoaming agent, a base material wetting agent and a mildew-proof and algae-proof agent, uniformly stirring, adding a pigment and a filler, dispersing at a high speed until the mixture is uniform and free of particles, adding a pure acrylic emulsion, uniformly stirring, and finally adding color paste according to the color of the concrete to be treated to perform color mixing to obtain the intermediate coating;

(3) preparing a top coating: under stirring, adding the defoaming agent, the base material wetting agent, the mildew-proof algaecide and the multifunctional auxiliary agent into water, stirring uniformly, then adding the silicone resin emulsion, stirring until the liquid is uniform, adding the film-forming auxiliary agent, the antifreezing agent and the wax emulsion, stirring uniformly, adding the thickening agent, and stirring uniformly to obtain the surface coating.

The preparation method separately adds the raw materials and uniformly stirs the raw materials each time, thereby ensuring the uniformity of the final product.

The invention also provides application of the color difference adjusting material suitable for concrete in concrete surface treatment.

According to some preferred implementation aspects of the invention, the application comprises a construction method of the color difference adjusting material in concrete surface treatment, and the construction method comprises the following steps:

polishing and flattening the surface of the concrete, and then sequentially spraying a primary coating, a secondary coating and a surface coating to sequentially form a primary coating, a secondary coating and a surface coating on the surface of the concrete from inside to outside;

and before spraying the intermediate coating, color paste is adopted to carry out color mixing on the intermediate coating, so that the intermediate coating has a color matched with the concrete to be constructed.

In some embodiments of the present invention, a construction method of a chromatic aberration adjusting material in a concrete surface treatment specifically includes the following steps:

(1) base surface treatment: cleaning embedded parts, reinforcement heads and the like of a concrete base surface to be treated, and thoroughly removing mortar, oil stains, infirm attachments and the like on the concrete surface by using a proper polishing tool so that the concrete base surface to be treated is smooth and flat;

if the base surface has honeycomb, pitted surface and other defects, the defects need to be repaired and then are polished to be smooth.

(2) Preparing a base coat: and covering the primer on the treated concrete base surface by adopting a brushing or spraying construction mode, and repeatedly brushing or spraying for 2-3 times to improve the penetration depth and the protection effect.

(3) Preparing a middle coating: and (3) covering the intermediate coating on the base coating by adopting the same process as the step (2).

Before the middle coating is sprayed, color comparison and color mixing are needed, and the color difference between the middle coating and the concrete is adjusted by adopting color paste, so that the color of the concrete construction part is consistent with that of the part which is not adjusted, or the whole part construction is carried out.

(4) Preparing a top coating: and (3) covering the surface coating on the intermediate coating by adopting the same process as the step (2), and uniformly coating without missing.

Compared with the prior art, the invention has the advantages that: the color difference adjusting material is suitable for the concrete, and the coating formed by the color difference adjusting material can achieve various excellent performances such as water resistance, weather resistance and wear resistance through the combined synergistic effect among the base coating, the middle coating and the top coating formed by the base coating, the middle coating and the top coating, and can be matched with the surface color of the concrete to be treated.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention is clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

All the raw materials in the invention are commercially available building materials or industrial auxiliary agents, or commercially available conventional raw materials of the same type can be adopted.

The raw materials used in the following examples are as follows: the cellulose thickener is 250HBR hydroxyethyl fiber (New Technology of Wuxi Yew tree Co., Ltd.); the dispersant is sodium polycarboxylate dispersant SN-5040 (New Material science and technology Co., Ltd. of Cedar without tin) of Santa Clara; the antifoaming agent is a basf aqueous antifoaming agent FoamStar 2410AC (Zhejiang Mingrun New materials Co., Ltd.); the substrate wetting agent was a digaogo Tego 270 wetting agent (bodii shanghai trade ltd); the pigment is rutile type titanium dioxide R-706 (Shanghai titanium industry Co., Ltd.) from DuPont; the filler is 1250-mesh mica powder and 1250-mesh coarse whiting powder, the mica powder (Shenzhen jinhao huhui ore industry Co., Ltd.), the coarse whiting powder (Jiangxi Guangyuan marketing Co., Ltd.); the film-forming assistant is alcohol ester twelve (New material science and technology company of tin-free taxus chinensis); the antifreeze is glycol (New materials science and technology company of tin-free Taxus chinensis); pure acrylic emulsion (Guangdong Baddofuki Co., Ltd.); silicone resin emulsions (wacker chemical (china) ltd); the color paste is water-based color paste (Shanghai bright chemical Co., Ltd.); the mildew-proof algaecide is Kaysolor At 9097 mildew-proof algaecide (Teyi scientific and technological development (Shanghai) Co., Ltd.); the multifunctional auxiliary agent is AMP-95 (Tei scientific and technological development (Shanghai) Co., Ltd.); the wax emulsion is BYK AQUACER 539 (Sovix nanomaterials Co., Ltd.); the thickening agent is polyurethane thickening agent RM 12W of Rohm and Haas and leveling thickening agent RM 2020 (Guangzhou Hengyu chemical Co., Ltd.).

The special color difference adjusting material for concrete consists of a primer, a middle coating and a surface coating, wherein:

the primer adopts the water-based permeable crystallization type waterproof material with controllable reaction speed prepared in the 201710111284.5 patent.

The medium coating comprises the following raw material components in parts by weight: 20-25 parts of deionized water, 0.2-0.5 part of cellulose thickener, 0.3-0.8 part of dispersant, 0.3-0.6 part of defoamer, 0.05-0.15 part of base material wetting agent, 15-25 parts of pigment, 15-25 parts of filler, 2-3 parts of film-forming assistant, 1.5-2.5 parts of antifreeze, 25-35 parts of emulsion, 0.1-0.3 part of mildew-proof algaecide and 0.5-3 parts of color paste;

the top coating comprises the following raw material components in parts by weight: 30-50 parts of emulsion, 0.5-1 part of antifreeze, 3-6 parts of film forming additive, 0.1-0.3 part of multifunctional additive, 0.05-0.15 part of base material wetting agent, 0.2-0.6 part of thickener, 0.1-0.3 part of mildew-proof and algae-proof agent, 0.05-0.2 part of defoamer, 2-5 parts of wax emulsion and 40-60 parts of water.

Example 1

The concrete-dedicated color difference adjusting material in the present embodiment includes a primer, a middle coat, and a top coat.

Wherein the primer is the water-based permeable crystallization type waterproof material with controllable reaction speed prepared by the patent application No. 201710111284.5.

The medium coating comprises the following raw material components in parts by weight: 23 parts of ionized water, 0.3 part of cellulose thickener, 0.4 part of dispersant, 0.4 part of defoamer, 0.1 part of base material wetting agent, 20 parts of pigment, 21.4 parts of filler, 2 parts of film-forming assistant, 2 parts of antifreeze, 30 parts of pure acrylic emulsion, 0.2 part of mildew-proof and algae-proof agent and 0.2 part of color paste.

The top coating comprises the following raw material components in parts by weight: 50 parts of silicone resin emulsion, 0.5 part of antifreeze, 4 parts of film-forming additive, 0.2 part of multifunctional additive, 0.1 part of base material wetting agent, 0.3 part of thickener, 0.1 part of mildew-proof and algae-proof agent, 0.1 part of defoamer, 3 parts of wax emulsion and 41.7 parts of water.

Example 2

The concrete-dedicated color difference adjusting material in the present embodiment includes a primer, a middle coat, and a top coat.

Wherein the primer is the water-based permeable crystallization type waterproof material with controllable reaction speed prepared by the patent application No. 201710111284.5.

The medium coating comprises the following raw material components in parts by weight: 21.2 parts of ionized water, 0.2 part of cellulose thickener, 0.6 part of dispersant, 0.4 part of defoamer, 0.15 part of base material wetting agent, 15 parts of pigment, 25 parts of filler, 3 parts of film-forming assistant, 2 parts of antifreeze, 32 parts of pure acrylic emulsion, 0.3 part of mildew-proof and algae-proof agent and 0.15 part of color paste.

The top coating comprises the following raw material components in parts by weight: 31.25 parts of silicone resin emulsion, 1 part of antifreeze, 5 parts of film-forming additive, 0.2 part of multifunctional additive, 0.05 part of base material wetting agent, 0.2 part of thickener, 0.2 part of mildew-proof and algae-proof agent, 0.1 part of defoamer, 2 parts of wax emulsion and 60 parts of water.

Example 3

The concrete-dedicated color difference adjusting material in the present embodiment includes a primer, a middle coat, and a top coat.

Wherein the primer is the water-based permeable crystallization type waterproof material with controllable reaction speed prepared by the patent application No. 201710111284.5.

The medium coating comprises the following raw material components in parts by weight: 25 parts of ionized water, 0.3 part of cellulose thickener, 0.6 part of dispersant, 0.4 part of defoamer, 0.1 part of base material wetting agent, 25 parts of pigment, 15 parts of filler, 3 parts of film-forming assistant, 2 parts of antifreeze, 25.6 parts of pure acrylic emulsion, 0.2 part of mildew-proof and algae-proof agent and 2 parts of color paste.

The top coating comprises the following raw material components in parts by weight: 40.35 parts of silicone resin emulsion, 0.5 part of antifreeze, 6 parts of film-forming additive, 0.1 part of multifunctional additive, 0.05 part of base material wetting agent, 0.6 part of thickener, 0.3 part of mildew-proof and algae-proof agent, 0.1 part of defoamer, 2 parts of wax emulsion and 50 parts of water.

Example 4

The embodiment provides a preparation method of the special color difference adjusting material for concrete in the embodiment 1 to 3, which comprises the following steps:

(1) preparation of the primer: see the disclosure in the patent application No. 201710111284.5, which is not repeated herein.

(2) The preparation of the medium coating comprises the steps of weighing the components according to the formula proportion, adding deionized water into a stirring kettle, stirring and dispersing, adding a cellulose thickener, stirring until liquid is thickened, adding a dispersing agent, a defoaming agent, a base material wetting agent and a mildew-proof and algae-proof agent, stirring until the mixture is uniform, adding a pigment and a filler, highly dispersing until the mixture is uniform and has no particles, adding a pure acrylic emulsion, stirring until the mixture is uniform, adding a film-forming aid and an anti-freezing agent, stirring until the mixture is uniform, then toning by using color paste according to the color contrast of fair-faced concrete (the dosage of the color paste is based on the dosage of the color contrast of the concrete, and filtering and packaging.

(3) Preparing a top coating, weighing the components according to a formula ratio, adding deionized water into a stirring kettle, stirring and dispersing, adding a defoaming agent, a base material wetting agent, a mildew-proof algaecide and a multifunctional auxiliary agent, stirring uniformly, adding a silicone resin emulsion, stirring until the liquid is uniform, adding a film-forming auxiliary agent and an antifreezing agent, stirring uniformly, adding a wax emulsion, stirring uniformly, adding a thickening agent, and stirring uniformly; filtering and packaging to obtain the transparent top coating.

For convenience of description and understanding, the preparation of the primer, the midcoat and the topcoat are separately described, and in practice, the above steps (1), (2) and (3) can also be carried out simultaneously.

Example 5

The construction method of the color difference adjusting material in the concrete surface treatment in the embodiment specifically comprises the following steps:

(1) base surface treatment: cleaning embedded parts, reinforcement heads and the like of a concrete base surface to be treated, and thoroughly removing mortar, oil stains, infirm attachments and the like on the concrete surface by using a proper polishing tool so that the concrete base surface to be treated is smooth and flat;

if the base surface has honeycomb, pitted surface and other defects, the base surface needs to be repaired and then polished to be flat.

(2) Preparing a base coat: and covering the primer on the treated concrete base surface by adopting a brushing or spraying construction mode, and repeatedly brushing or spraying for 2-3 times to improve the penetration depth and the protection effect.

(3) Preparing a middle coating: and (3) covering the intermediate coating on the base coating by adopting the same process as the step (2).

Before the middle coating is sprayed, color comparison and color mixing are needed, and the color difference between the middle coating and the concrete is adjusted by adopting color paste, so that the color of the concrete construction part is consistent with that of the part which is not adjusted, or the whole part construction is carried out.

(4) Preparing a top coating: and (3) covering the surface coating on the intermediate coating by adopting the same process as the step (2), and uniformly coating without missing.

Comparative examples 1 to 3

The color difference adjusting material of the comparative example 1 has basically the same composition and mixture ratio as those of the example 1, and the difference is that: the color difference adjusting material of comparative example 1 included only the primer and the midcoat, and had no topcoat. That is, comparative example 1 forms only the primer layer and the middle coating layer without the top coating layer at the time of concrete surface construction.

The color difference adjusting material of the comparative example 2 has basically the same composition and mixture ratio as those of the example 2, and the difference is that: the silicone resin emulsion in the topcoat of example 2 was replaced with an aqueous fluorocarbon emulsion.

The color difference adjusting material of the comparative example 3 has basically the same composition and mixture ratio as those of the example 3, except that: the silicone resin emulsion in the topcoat material of example 3 was replaced with an aqueous silicone acrylic emulsion.

Example 6 test and results

The color difference adjusting materials in examples 1-3 and comparative examples 1-3 are adopted to brush the surface of the concrete test block: the method comprises the steps of repeatedly coating or spraying the concrete test block with a primer for 2-3 times to form a primer, performing intermediate coating construction in a roll coating or spraying construction mode after the base surface is completely dried for 12 hours to form an intermediate coating, and performing surface coating construction in a roll coating mode after the base surface is dried for 12 hours to form a surface coating, so as to ensure that the coating is free of coating leakage.

And (3) carrying out performance detection on the concrete test block subjected to brushing treatment, wherein detection items and results are shown in table 1, and detection methods are carried out according to national standards in table 1.

TABLE 1 test results

The results in Table 1 show that the properties of examples 1 to 3 are the most excellent, and the comparative analysis of examples 1 to 3 and comparative examples 1 to 3 shows that the coating using the silicone resin emulsion instead of other emulsions has better resistance to washing, water impermeability, weathering and permeability, and better protective effect.

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

1. the chromatic aberration adjusting material can directly use common concrete as a processing base material, and the obtained coating has the effects of waterproof protection and chromatic aberration modification. The coating is carried out on the surface of the bare concrete building, the concrete is protected from being damaged by neutralization, the durability is improved, the appearance of the surface of the concrete is repaired, and the attractiveness of the design requirement is achieved.

2. The intermediate coating in the chromatic aberration adjusting material adopts alkali-resistant pure acrylic emulsion, is alkali-resistant colorable coating, is concrete chromatic aberration adjusting coating, has excellent alkali resistance on the premise of approaching the appearance color effect of required fair-faced concrete, can seal the alkali for various concrete base plane substrates to prevent water dissolution and consequent peeling, has strong permeability, excellent waterproofness, excellent adhesive force, coating compactness, alkali resistance, carbonization resistance and cement degradation resistance, can resist the alkali corrosion of a sealing substrate, prevent water from permeating into the concrete, and has mildew-proof and algae-resistant capabilities.

3. The surface coating in the chromatic aberration adjusting material is a concrete protective transparent coating, the service life of the composite coating can be prolonged, and the surface coating adopts the silicone resin emulsion as the raw material, so that the chromatic aberration adjusting material has better weather resistance compared with the traditional fluorocarbon emulsion and silicone acrylic emulsion, and can prevent the phenomena of degradation, yellowing, aging, chromatic aberration and uneven gloss under ultraviolet rays. The coating has excellent corrosion resistance, stain resistance, chemical stability, salt mist resistance and atmospheric corrosion resistance, maintains the natural texture and texture of the composite coating, and prolongs the service life of the whole coating.

4. The invention adopts the water-based permeable crystallization type waterproof material as the primer to be matched with the middle coating and the top coating for use, the primer permeable crystallization and the concrete base surface form a whole, the dense concrete improves the waterproof performance of the whole coating, improves the adhesive force with the middle coating and prolongs the service life of the whole coating.

5. The chromatic aberration adjusting material is simple to prepare, easy to obtain raw materials, capable of being widely produced and applied, free of large-scale machining, high in production efficiency, low in investment, convenient to construct, green, environment-friendly and pollution-free, and greatly reduces labor cost.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.