阅读说明：本技术 一种环保型高效陶瓷防污液及其使用方法 (Environment-friendly efficient ceramic antifouling liquid and use method thereof ) 是由 程文静 方伟洪 刘锦凡 汤金伟 麦嘉仪 胡艺伦 冯俏君 于 2020-05-27 设计创作，主要内容包括：本发明涉及防污技术领域,具体涉及到一种环保型高效陶瓷防污液及其使用方法。该防污液制备原料包括10～30份硅溶胶、0.5～2份助剂、0.1～3份分散剂、1～5份功能添加剂、60～80份水；所述功能添加剂为干酪素。本发明中提供的环保型高效陶瓷防污液与常规硅溶胶防污液相比,可以明显提高防污液对陶瓷砖表面的附着力、粘结强度和耐冲击性能,使其在常温甚至在很低的温度下能够保持很好的涂膜完整性,避免因温度的改变而出现裂纹或龟裂的情况。其次,本申请中的防污液在使用量显著减少的情况下也能在不同环境中依然保持很好的长久防污性能。此外,本发明中的防污液虽然采用了动物蛋白干酪素,但是并不会因此而出现滋生细菌发霉、泛黄等问题。(The invention relates to the technical field of antifouling, in particular to an environment-friendly efficient ceramic antifouling liquid and a using method thereof. The raw materials for preparing the antifouling liquid comprise 10-30 parts of silica sol, 0.5-2 parts of auxiliary agent, 0.1-3 parts of dispersing agent, 1-5 parts of functional additive and 60-80 parts of water; the functional additive is casein. Compared with the conventional silica sol anti-fouling liquid, the environment-friendly efficient ceramic anti-fouling liquid provided by the invention can obviously improve the adhesion, bonding strength and impact resistance of the anti-fouling liquid to the surface of a ceramic tile, so that the anti-fouling liquid can keep good coating integrity at normal temperature even at very low temperature, and the condition of cracks or fissures caused by temperature change is avoided. Secondly, the antifouling liquid in the application can still keep good long-term antifouling performance in different environments under the condition of obviously reducing the using amount. In addition, although the anti-fouling liquid adopts animal protein casein, the problems of bacteria mildew and yellowing are not caused.)

1. An environment-friendly efficient ceramic antifouling liquid is characterized in that the preparation raw materials comprise 10-30 parts of silica sol, 0.5-2 parts of auxiliary agent, 0.1-3 parts of dispersing agent, 1-5 parts of functional additive and 60-80 parts of water; the functional additive is casein.

2. The environment-friendly efficient ceramic antifouling liquid as claimed in claim 1, wherein the silica sol is an alkaline silica sol, and the pH value of the alkaline silica sol is 9.0-10.5.

3. The environment-friendly efficient ceramic antifouling liquid according to claim 2, wherein the viscosity of the alkaline silica sol at 25 ℃ is not higher than 6.5mms²/s。

4. The environment-friendly efficient ceramic antifouling liquid as claimed in claim 1, wherein the casein is modified casein; the preparation method of the modified casein comprises the following steps:

(1) taking 5.0g of modifier, drying and heat-treating at 110 ℃ for 20 minutes, adding acetone, stirring and dissolving, then dropwise adding 4.5-6.5 g of hexamethylene diisocyanate, reacting for 1-2 hours at 70 ℃ under the condition of introducing nitrogen, then cooling the temperature of the system to 55 ℃, adding 1.8-2.2 g of phenol, reacting for 4-6 hours, and then concentrating under reduced pressure to obtain an intermediate A;

(2) adding triethylamine into water to adjust the pH value to 8.0-8.5, then adding casein, stirring and dissolving for 1-3 hours to obtain a casein solution with the solid content of 20 wt%; adding the intermediate A into the casein solution in batches, stirring and reacting for 1-3 hours at 75-85 ℃, and concentrating under reduced pressure to obtain the modified casein.

5. The environment-friendly efficient ceramic antifouling liquid as claimed in claim 4, wherein the modifier is one or more selected from polyether polyol, polyester polyol, amino terminated polyamide, hydroxyl terminated acrylic resin and hydroxyl terminated silicone resin.

6. The environment-friendly efficient ceramic antifouling liquid according to claim 5, wherein the amino terminated polyamide is an amino terminated hyperbranched polyamide.

7. The environment-friendly efficient ceramic antifouling liquid as claimed in claim 6, wherein the molecular weight of the amino-terminated hyperbranched polyamide is 800-1000 g/mol.

8. The environment-friendly efficient ceramic antifouling liquid according to claim 6, wherein the amino-terminated hyperbranched polyamide has an amino functionality of 7 to 9.

9. The environmentally friendly efficient ceramic antifouling liquid as claimed in any one of claims 1 to 8, wherein the dispersant comprises cetyl trimethyl ammonium bromide and polyoxyethylene dodecyl ether in a weight ratio of (1.5: 1) - (1: 1.5).

10. The use method of the environment-friendly efficient ceramic antifouling liquid according to any one of claims 1 to 9, comprising the following steps:

firstly, polishing the surface of a polished brick smoothly, then spraying polishing solution on the surface of the polished brick, and repeatedly polishing at least twice by using a roller set with a brush; wherein the spraying amount per square meter is 10-30 g; the polishing time is 20-40 s.

Technical Field

The invention relates to the technical field of antifouling, in particular to an environment-friendly efficient ceramic antifouling liquid and a using method thereof.

Background

The polished tiles are popular with consumers once coming out, and have clean and beautiful appearance, so that the polished tiles are the main products for decorating floors and hallways of markets and civil houses, and are commonly used on the surfaces of articles such as floors, walls, dining tables, office tables and the like. However, since a large amount of air holes and fine lines are generated inside and on the surface of the ceramic tile in the production process of the ceramic tile, although some air holes on the surface of the ceramic tile can be eliminated through sintering, closed air holes inside the ceramic tile are exposed on the surface of the ceramic tile in subsequent polishing, grinding and other processes to form open air holes which are easy to store dirt and contain dirt, and the ceramic tile is easy to be contaminated with pollutants such as ink, paint, tea water, foot prints and the like in the use process and is not easy to clean. In order to improve the antifouling performance of ceramic tiles, the following two methods are generally adopted at present. Firstly, the vitrification degree of the ceramic tile is improved and the water absorption is reduced by changing the material composition of the ceramic tile or coating a layer of compact material on the surface of the ceramic tile before sintering; secondly, the ceramic anti-fouling liquid is coated after the ceramic tile is polished.

The ceramic antifouling liquid can form a layer of adsorption on the surface of the ceramic tile, and the ceramic tile has antifouling capacity due to the hydrophobic property of the membranes. The conventional antifouling liquid comprises organic silicone oil, wax, inorganic particles (such as silicon dioxide, bentonite and titanium dioxide) and the like. The antifouling liquid mainly forms a protective film on the surface of the ceramic tile and fills concave-convex air holes on the surface of the ceramic tile to prevent dirt from entering the ceramic tile through entering the opening air holes so as to achieve an antifouling effect. Although the antifouling liquids may also react with chemical components on the surface of the ceramic tile, so as to have good adhesion and adhesion to the surface of the ceramic tile, the reactivity between the antifouling liquid components and the compounds on the surface of the ceramic tile is very low, so that the probability that the antifouling liquids actually react on a production line and adhere to the surface of the ceramic tile is very low, and the long-acting antifouling property, the wear resistance and the like of the antifouling liquids are still to be improved.

Disclosure of Invention

Aiming at the technical problems, the first aspect of the invention provides an environment-friendly efficient ceramic antifouling liquid, which is prepared from 10-30 parts of silica sol, 0.5-2 parts of auxiliary agent, 0.1-3 parts of dispersing agent, 1-5 parts of functional additive and 60-80 parts of water; the functional additive is casein.

As a preferable technical scheme of the invention, the silica sol is alkaline silica sol, and the pH value of the silica sol is 9.0-10.5.

As a preferable technical scheme of the invention, the viscosity of the alkaline silica sol at 25 ℃ is not higher than 6.5mms²/s。

In a preferred technical scheme of the invention, the casein is modified casein; the preparation method of the modified casein comprises the following steps:

(1) taking 5.0g of modifier, drying and heat-treating at 110 ℃ for 20 minutes, adding acetone, stirring and dissolving, then dropwise adding 4.5-6.5 g of hexamethylene diisocyanate, reacting for 1-2 hours at 70 ℃ under the condition of introducing nitrogen, then cooling the temperature of the system to 55 ℃, adding 1.8-2.2 g of phenol, reacting for 4-6 hours, and then concentrating under reduced pressure to obtain an intermediate A;

(2) adding triethylamine into water to adjust the pH value to 8.0-8.5, then adding casein, stirring and dissolving for 1-3 hours to obtain a casein solution with the solid content of 20 wt%; adding the intermediate A into the casein solution in batches, stirring and reacting for 1-3 hours at 75-85 ℃, and concentrating under reduced pressure to obtain the modified casein.

As a preferred embodiment of the present invention, the modifier is one or more selected from polyether polyol, polyester polyol, amino terminated polyamide, hydroxyl terminated acrylic resin, and hydroxyl terminated silicone resin.

As a preferred embodiment of the present invention, the amino terminated polyamide is an amino terminated hyperbranched polyamide.

As a preferable technical scheme of the invention, the molecular weight of the amino-terminated hyperbranched polyamide is 800-1000 g/mol.

As a preferable technical scheme of the invention, the amino functionality of the amino-terminated hyperbranched polyamide is 7-9.

In a preferred embodiment of the present invention, the dispersant comprises cetyl trimethyl ammonium bromide and polyoxyethylene lauryl ether in a weight ratio of (1.5: 1) - (1: 1.5).

The second aspect of the invention provides a method for using the environment-friendly efficient ceramic antifouling liquid, which comprises the following steps:

firstly, polishing the surface of a polished brick smoothly, then spraying polishing solution on the surface of the polished brick, and repeatedly polishing at least twice by using a roller set with a brush; wherein the spraying amount per square meter is 10-30 g; the polishing time is 20-40 s.

Has the advantages that: compared with the conventional silica sol anti-fouling liquid, the environment-friendly efficient ceramic anti-fouling liquid provided by the invention can obviously improve the adhesion and bonding strength of the anti-fouling liquid to the surface of a ceramic tile. In addition, through the effective design of the antifouling liquid formula, the density of the antifouling liquid protective film layer is obviously improved, the adhesive force and the bonding strength are improved, meanwhile, the protective film layer is more flexible, the impact resistance is obviously improved, the coating integrity can be well maintained at normal temperature even at very low temperature, and the condition of cracks or crazing caused by the change of the temperature is avoided. Secondly, the antifouling liquid in the application adopts environment-friendly raw materials, the production process does not pollute the environment, and the antifouling liquid can still keep good long-term antifouling performance in different environments under the condition of obviously reducing the using amount. In addition, although the anti-fouling liquid adopts the animal protein casein, the problems of bacteria breeding, mildew, yellowing, long-term peculiar smell and the like are not caused.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. 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. In case of conflict, the present specification, including definitions, will control.

The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

The first aspect of the invention provides an environment-friendly efficient ceramic antifouling liquid, which is prepared from 10-30 parts of silica sol, 0.5-2 parts of auxiliary agent, 0.1-3 parts of dispersing agent, 1-5 parts of functional additive and 60-80 parts of water; the functional additive is casein.

The silica sol is a dispersion liquid of nano-scale silica particles in water or a solvent, and the colloidal particles are fine and have strong penetrability on a base material, can permeate into a base layer through capillaries and completely seal pores, and the surfaces of the colloidal particles have more uncondensed hydroxyl groups which are combined with a substrate, hydroxyl groups and hydroxyl groups, and hydroxyl groups and Si-H groups, so that a hydrophobic and oleophobic protective layer with special protective function and stable structure is formed on the surface of the base material.

In some embodiments, the silica sol is an alkaline silica sol having a pH of 9.0 to 10.5.

Further, the viscosity of the alkaline silica sol at 25 ℃ is not higher than 6.5mms²/s。

Further, the average particle size of the alkaline silica sol is 7-120 nm.

The viscosity in the present invention refers to kinematic viscosity, and can be measured by a method known to those skilled in the art, and the viscosity in the present invention is measured by an NDJ-79 type viscometer. The alkaline silica sol of the present invention may be commercially available, for example, THS ammonia type available from Whitner nanotechnology, Inc., Guangdong.

The applicant finds that a certain amount of casein is added into the silica sol anti-fouling liquid, so that the adhesive force of the anti-fouling liquid to the surface of the ceramic tile can be obviously improved, and the adhesive strength of the anti-fouling liquid to the surface of the ceramic tile can be obviously improved compared with the conventional silica sol anti-fouling liquid. The applicant speculates that a large number of active groups such as amino, carboxyl and hydroxyl in the molecular structure of casein effectively activate the chemical reaction activity between polished ceramic tile surface silicate and other compounds and the antifouling liquid, so that the silica sol and the casein in the antifouling liquid can be chemically reacted with the compounds on the surface of the ceramic tile, and the silica sol and the casein are combined in a chemical bonding mode, so that the ceramic tile surface antifouling liquid has higher cohesiveness compared with the conventional physical adhesion and film-forming adsorption, and the antifouling liquid can keep good antifouling performance for a long time. However, because the solubility of casein in water is very low, casein can hardly be dissolved in water, so the dosage of casein cannot be too much, otherwise, the phenomena of layering, agglomeration and precipitation of the anti-fouling liquid are easily caused, and the normal use is influenced.

The applicant has unexpectedly found that when the pH of the silica sol used is in the range of 9.0 to 10.5, the stability of the anti-fouling liquid is significantly improved, and even if the casein content in the anti-fouling liquid reaches 5 wt%, no delamination or precipitation occurs, and particularly when the wheatths ammonia-type silica sol is selected, the stability and adhesion to the ceramic tile surface of the anti-fouling liquid are significantly improved. The applicant speculates that the interaction and close packing of casein molecules occur due to the excessively high content of polar groups such as carboxyl groups and amino groups in the molecular structure of the casein, and strong acting forces such as hydrogen and van der waals force between molecules, and the active groups are coated inside the particles formed by packing, so that the active groups are insoluble in water, and the stability of the anti-fouling liquid is deteriorated. After the silica sol with specific physical and chemical properties is reacted with casein, because a large amount of hydroxyl groups are contained in the nano silica particles of the silica sol, the hydroxyl groups can interact with polar groups in a casein molecular structure, and the acting force among casein molecules is broken, so that the aggregation state of the casein is changed, the casein is prevented from being accumulated and precipitated in the antifouling liquid, and amino groups, carboxyl groups and other groups tightly accumulated in the casein structure are exposed to react with silicates, silicon hydroxyl groups and other compounds on the surface of the ceramic tile, so that the adhesion of the antifouling liquid and the surface of the ceramic tile is improved. However, the applicant finds that the introduction of casein is easy to generate a little bubbles in the antifouling processing process of the ceramic tile, the glossiness of a protective layer of the antifouling liquid is reduced, the ceramic tile is yellowed even after the antifouling liquid is used for a period of time, and the antifouling liquid is easy to generate peculiar smell when being stored for a long time.

The casein in the invention is also called casein, and is a casein product extracted from milk and products thereof. Casein is a spherical biodegradable phosphorus-containing protein with high content of amino acid components, including alanine, arginine, aspartic acid, cystine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, valine. More than 55% of the amino acids in casein contain polar groups, such as amino, carboxyl, hydroxyl, etc., which have an effect on the hydrophilicity and intermolecular forces of casein. The casein in the invention can be obtained by the production and processing of fresh milk by the methods of centrifugation, degreasing, precipitation, drying and the like, and can also be purchased from the market.

In some embodiments, the casein is a modified casein; the preparation method of the modified casein comprises the following steps:

(1) taking 5.0g of modifier, drying and heat-treating at 110 ℃ for 20 minutes, adding acetone, stirring and dissolving, then dropwise adding 4.5-6.5 g of hexamethylene diisocyanate, reacting for 1-2 hours at 70 ℃ under the condition of introducing nitrogen, then cooling the temperature of the system to 55 ℃, adding 1.8-2.2 g of phenol, reacting for 4-6 hours, and then concentrating under reduced pressure to obtain an intermediate A;

(2) adding triethylamine into water to adjust the pH value to 8.0-8.5, then adding casein, stirring and dissolving for 1-3 hours to obtain a casein solution with the solid content of 20 wt%; adding the intermediate A into the casein solution in batches, stirring and reacting for 1-3 hours at 75-85 ℃, and concentrating under reduced pressure to obtain the modified casein.

In the invention, in order to accelerate the dissolution of the casein solution during the preparation, the temperature of the system can be increased, for example, to 60-80 ℃. In addition, ammonia water, sodium hydroxide and other components can be selected to replace triethylamine in the step 2 to adjust the acidity or basicity, but the applicant finds that the reaction between the intermediate and the casein solution is the most sufficient when triethylamine is used, so that other side reactions can be effectively avoided, and the comprehensive performance of the anti-fouling liquid is remarkably improved.

In some embodiments, the modifier is present in an amount of 10 to 30 wt% of the casein.

Further, the modifier is used in an amount of 15 wt% of the casein.

The applicant has found that the incorporation of casein does allow to significantly improve the adhesion and cohesion of the antifouling liquid to the surface of the ceramic tiles, in particular after the use in combination with silica sols having specific physico-chemical parameters. However, the applicant finds that the introduction of casein can affect the toughness of a protective film formed on the surface of a ceramic tile by an antifouling liquid, so that the protective film becomes brittle, and particularly the impact resistance of the ceramic tile is greatly affected at a lower temperature. To ameliorate these problems, the applicant modified casein to incorporate urethane soft segments into the molecular structure of the casein. The method comprises the following steps of reacting a modifier with diisocyanate to obtain a carbamate prepolymer with a certain free isocyanate content, reacting the carbamate with phenol at a certain temperature to obtain a phenol-terminated carbamate intermediate, slowly releasing active isocyanate in the intermediate at 75-85 ℃, reacting the intermediate with active groups such as amino groups and hydroxyl groups in casein, and grafting the intermediate into a casein structure. The modified casein has high reactivity on compounds on the surface of ceramic tiles and can generate strong interaction because a large number of active groups such as carboxyl, hydroxyl and the like are reserved in the structure. Meanwhile, on one hand, the carbamate can effectively change the accumulation state of casein, and weaken the interaction of hydrogen bond action, electrostatic action and the like in molecules, so that the structure of the carbamate is fully extended, and the carbamate is favorable for improving the impact resistance of the anti-fouling liquid protective film layer. On the other hand, the flexible structure of the carbamate in the antifouling liquid enables the protective film layer formed on the surface of the ceramic to have better elastic deformation capacity, thereby being beneficial to improving the impact resistance of the protective film layer.

In some embodiments, the modifier is selected from one or more of polyether polyols, polyester polyols, amino terminated polyamides, hydroxyl terminated acrylic resins, hydroxyl terminated silicone resins.

The polyether polyol in the present invention is polyether, and is prepared by addition polymerization of an initiator (an active hydrogen group-containing compound) with Ethylene Oxide (EO), Propylene Oxide (PO), Butylene Oxide (BO), etc. in the presence of a catalyst. The most productive polyether is the production of various general polyether polyols by using glycerol (glycerin) as an initiator and an epoxide (PO and EO are commonly used together) and changing the conditions of the PO and EO addition modes (mixed addition or separated addition), the addition ratio, the addition sequence and the like. In the present invention, the kind of the polyether polyol is not particularly limited, and examples thereof include, but are not limited to, polyethylene glycol, polypropylene glycol, polytetramethylene ether glycol, and the like

The polyester polyol is a polymer containing a certain content of hydroxyl groups, which is obtained by polycondensation of dicarboxylic acid, dihydric alcohol and the like. In the present invention, the kind of the polyether polyol is not particularly limited, and examples thereof include, but are not limited to, polyhexamethylene adipate, polyethylene terephthalate, and the like.

The amino-terminated polyamide is obtained by reacting dibasic acid/anhydride/acyl chloride with diamine, the concrete type of the diamine-terminated polyamide polymer is not particularly limited, and amino-terminated aliphatic polyamide, amino-terminated aromatic polyamide and the like which are well known by the technical personnel in the field can be selected.

The hydroxyl-terminated acrylic resin in the present invention refers to a synthetic acrylic resin containing a large amount of hydroxyl groups after esterification reaction with a diol or a polyol, and the specific type of the resin is not particularly limited, and various hydroxyl-terminated acrylic resins known to those skilled in the art can be selected.

The hydroxyl-terminated silicone resin in the present invention refers to a resin obtained by hydrolyzing a synthesized silicone resin to form a silicon hydroxyl group at the end of a molecular chain of the resin, and the specific type thereof is not particularly limited, and various hydroxyl-terminated silicone resins known to those skilled in the art can be selected.

In some embodiments, the amino-terminated polyamide is an amino-terminated hyperbranched polyamide.

Further, the molecular weight of the amino-terminated hyperbranched polyamide is 800-1000 g/mol.

Further, the amino functionality of the amino-terminated hyperbranched polyamide is 7-9.

The amino functionality in the present invention refers to the number of moles of amino groups contained in 1 mole of amino-terminated hyperbranched polyamide in the amino-terminated hyperbranched polyamide molecule. The amino-terminated hyperbranched polyamide of the present invention can be obtained commercially, for example, from HyPer N102, a product of wuhan hyperbranched resin technology ltd.

In the course of the present invention, the applicants have found that components such as the carbamate structure of the modified casein and the dispersant in the antifouling liquid have a crucial influence on the function of the modified casein. The applicant finds that in the process of preparing the intermediate A, compared with the conventional polyether component, the antifouling liquid prepared by using the hyperbranched polyimide with the end capped by the amino group as the modifier has excellent adhesion to the surface of a ceramic tile and also has excellent performances of impact resistance, wear resistance and the like. After the intermediate of the hyperbranched polyamide is adopted to modify the casein, the hyperbranched structure occupies larger volume, so that the rotation of amino groups, carboxyl groups and other groups in the casein structure is hindered, and the interaction between the amino groups and the carboxyl groups is weakened, so that more active groups in the casein structure have the opportunity to interact with compounds on the surface of the ceramic tile, and the adhesion of the antifouling liquid to the surface of the ceramic tile is improved. Meanwhile, after the intermediate containing the hyperbranched polyamide is grafted to the casein, the obtained casein can be fully dispersed and contacted with silica sol and other components in the anti-fouling liquid, a tight three-dimensional space network is formed among the silica sol, the casein and other components, and the components are lapped, so that when the anti-fouling liquid protective film layer receives external impact force, the external impact force can be absorbed in modes of more rapid and full deformation and the like, and the anti-fouling liquid protective film layer has better impact resistance and good adhesive property. In addition, the applicant has unexpectedly found that the use of cetyl trimethyl ammonium bromide and polyoxyethylene lauryl ether in equal weight amounts as dispersants, particularly when using intermediate modified casein containing hyperbranched polyamides, significantly reduces the generation of bubbles in the anti-fouling liquid processing process of ceramic tiles and avoids the effects thereof on adhesion, impact resistance, and the like.

The dispersant is a component of the antifouling liquid with high stability, which is prepared by fully dispersing components such as silica sol, casein, auxiliary agents and the like in a system, and the specific component is a surfactant. The dispersant of the present invention may be any dispersant known to those skilled in the art, such as nonionic surfactant, cationic surfactant, anionic surfactant, complex surfactant, etc.

In some embodiments, the dispersant is selected from a nonionic surfactant and a cationic surfactant.

Examples of the nonionic surfactant described in the present invention include, but are not limited to, polyoxyalkylene alkyl ethers and polyoxyalkylene alkylphenyl ethers (e.g., diethylene glycol monomethyl ether, diethylene glycol diethyl ether, polyoxyethylene dodecyl ether, polyoxyethylene stearyl ether, polyoxyethylene nonylphenyl ether), ethylene oxide-propylene oxide block copolymers, sorbitan fatty acid esters (e.g., sorbitan monolaurate, sorbitan monooleate, sorbitan trioleate), polyoxyethylene fatty acid sorbitan esters (e.g., polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate), polyoxyethylene fatty acid esters (e.g., polyoxyethylene sorbitan tetraoleate), fatty acid glycerides, polyoxyethylene sorbitan trioleate, polyoxyethylene fatty acid esters (e.g., polyoxyethylene sorbitan tetraoleate), polyoxyethylene glyceryl esters, polyoxyethylene sorbitan trioleate, polyoxyethylene sorbitan esters, polyoxyethylene, (e.g., glycerol monooleate), polyoxyethylene fatty acid glycerides (e.g., polyoxyethylene glycerol monostearate, polyoxyethylene glycerol monooleate), polyoxyethylene fatty acid esters (e.g., polyethylene glycol monolaurate, polyethylene glycol monooleate), polyoxyethylene alkylamines and acetylenic diols (e.g., the adduct of 2, 4, 7, 9-tetramethyl-5-decyne-4, 7-diol and the diol and ethylene oxide or propylene oxide), alkylolamides (e.g., condensation products of coconut oil acid, lauric acid, and the like with ethanolamine, diethanolamine, triethanolamine, and the like), polyol esters (ethylene glycol monostearate or distearate, propylene glycol monostearate, propylene glycol alginate, glycerol monostearate, and distearate), nonionic fluorocarbon surfactants, and the like.

Examples of the cationic surfactant described in the present invention include, but are not limited to, cetyltrimethylammonium bromide, dodecyltrimethylammonium bromide, tetradecyltrimethylammonium bromide, octadecyltrimethylammonium bromide, polyquaterniums, and the like.

In some preferred embodiments, the dispersant comprises cetyltrimethylammonium bromide and polyoxyethylene lauryl ether.

Further, the weight ratio of the cetyl trimethyl ammonium bromide to the polyoxyethylene dodecyl ether is (1.5: 1) - (1: 1.5).

Further, the weight ratio of the hexadecyl trimethyl ammonium bromide to the polyoxyethylene dodecyl ether is 1: 1.

the applicant finds that the properties of the antifouling liquid, such as stability, adhesive force, wear resistance, impact resistance and the like, can be improved by the compounded dispersing agent, the modified casein and the silica sol with specific physical and chemical parameters. Can also effectively solve the problems of yellowing, long-term peculiar smell and the like of the antifouling liquid protective film layer. Probably because casein is a protein, bacteria are easy to grow and mildew in a supermarket environment, so that the problem of yellowing and peculiar smell is easy to appear after the casein is used in an antifouling liquid, but when the casein is modified, a specific compound dispersing agent and silica sol with specific physicochemical parameters are selected, so that the casein can be prevented from being contacted by the bacteria in the environment, and the antifouling liquid can have certain antibacterial performance on the other hand, so that the yellowing and the peculiar smell are avoided.

Under the premise of not obviously reducing the comprehensive performance of the antifouling liquid, various additives well known by the technical personnel in the field can be selected, the selection of the types of the additives is not specially limited, and for example, a slippery feel enhancer, a penetration feel enhancer, a chelating agent, a stabilizer and the like can be selected.

The second aspect of the invention provides a method for using the environment-friendly efficient ceramic antifouling liquid, which comprises the following steps:

firstly, polishing the surface of a polished brick smoothly, then spraying polishing solution on the surface of the polished brick, and repeatedly polishing at least twice by using a roller set with a brush; wherein the spraying amount per square meter is 10-30 g; the polishing time is 20-40 s.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention. In addition, the starting materials used are all commercially available, unless otherwise specified.