CN113025084A

CN113025084A - Environment-friendly diatom water paint and preparation method thereof

Info

Publication number: CN113025084A
Application number: CN202110140991.3A
Authority: CN
Inventors: 夏业存; 赵鑫; 王晓灿; 周如东; 汪贤莉; 田伟伟; 樊丹丹
Original assignee: Anhui Silicon Energy Environmental Protection Technology Co ltd
Current assignee: Anhui Silicon Energy Environmental Protection Technology Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-06-25

Abstract

The invention provides an environment-friendly diatom water paint and a preparation method thereof, belongs to the technical field of interior decoration coatings, and aims to solve the technical problem of how to combine the environment-friendly performance of diatom ooze and the advantage of simple water paint construction to prepare the environment-friendly diatom water paint. The composite material comprises a premix and a blending material, wherein the premix comprises a thickener protective agent, a pH regulator, a wetting agent, a wetting dispersant, a defoaming agent, a diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, ground calcium carbonate, a formaldehyde purification material and pure water; the blending materials comprise a quick bactericide, propylene glycol, a pure acrylic emulsion, an antiseptic bactericide, a film-forming auxiliary agent, a defoaming agent and pure water; and (3) preparing the premix and the blending materials, and then mixing and stirring uniformly to obtain the environment-friendly diatom water paint. The environment-friendly water paint has the advantages of safety, environment friendliness and simplicity in construction, and a paint film after coating is plump, good in flexibility, water-resistant, wear-resistant, ageing-resistant, good in color and gloss retention and excellent in performance; has good formaldehyde purification effect and antibacterial effect.

Description

Environment-friendly diatom water paint and preparation method thereof

Technical Field

The invention belongs to the technical field of interior decoration coatings, and particularly relates to a formula and a preparation method thereof.

Background

The diatom ooze is a natural environment-friendly interior wall decoration material, and takes diatomite as a main raw material. The coating is used for replacing wallpaper and latex paint and is suitable for decorating inner walls of villas, apartments, hotels, homes, hospitals and the like. Because of good workability and plasticity, the diatom ooze can be freely shaped like mud when being constructed, smeared on walls, made into patterns and the like, and diatomite is added, the diatom ooze is called as the diatom ooze. The diatom ooze is a natural substance formed by deposition of diatom, which is an aquatic plankton living millions of years ago, the diatom ooze mainly contains opals, is rich in various beneficial mineral substances and soft in texture, an electron microscope shows that countless tiny holes are formed in the particle surface of the diatom ooze, the porosity reaches over 90 percent, and the specific surface area reaches 65m 2/g.

The water paint is a paint taking water as a diluent, has the characteristics of energy conservation, environmental protection, non-combustion, no explosion, ultralow emission, low carbon, health and the like, has a plump paint film, good flexibility, water resistance, wear resistance, aging resistance, yellowing resistance and convenient use, and can be widely used on various materials such as woodware, metal, industrial coating, plastics, glass, building surfaces and the like. The water paint is a renewal product which gradually replaces paint, and the push of water-based coating is a revolution in the field of Chinese coating.

The diatom ooze and the water paint belong to wall surface decoration materials, the water paint is simple to construct, the construction is the same as that of the traditional emulsion paint, but the water paint is pollution-free, and the water paint is harmless to constructors. Compared with water paint, the diatom ooze is complex in construction process, is a functional coating, has a rough surface, and has the characteristics of fire prevention, flame retardance, moisture absorption, moisture retention and the like.

Therefore, the environment-friendly diatom water paint is developed by combining the environment-friendly performance of diatom ooze and the advantage of simple water paint construction, and has the superior performances of simple construction, convenient coating, safety and environmental protection.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides an environment-friendly diatom water paint and a preparation method thereof, and the device aims to solve the technical problems that: how to prepare the diatom water paint with simple construction, safety and environmental protection.

The purpose of the invention can be realized by the following technical scheme:

an environment-friendly diatom water paint comprises a premix and a blending material, and is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.4-0.8 part of a thickener protective agent, 0.1-0.2 part of a pH regulator, 0.2-0.5 part of a wetting agent, 0.2-0.8 part of a wetting dispersant, 0.1-0.5 part of a defoaming agent, 6-10 parts of a kieselguhr filter aid, 6-12 parts of rutile titanium dioxide, 5-10 parts of superfine calcined kaolin, 18-25 parts of ground calcium carbonate, 1.5-3 parts of a formaldehyde purification material and 25-35 parts of pure water; the blending materials comprise 0.1 to 0.3 portion of fast bactericide, 0.5 to 2 portions of propylene glycol, 12 to 16 portions of pure acrylic emulsion, 0.2 to 0.6 portion of antiseptic bactericide, 1 to 1.5 portions of film forming additive, 0.2 to 0.5 portion of defoaming agent and 3 to 7 portions of pure water.

For the formula of the environment-friendly diatom water paint, the environment-friendly diatom water paint is preferably prepared from the following raw materials in parts by weight, wherein the premix comprises 0.55 part of a thickening agent protective agent, 0.15 part of a pH regulator, 0.3 part of a wetting agent, 0.5 part of a wetting dispersant, 0.2 part of a defoaming agent, 8 parts of a kieselguhr filter aid, 9 parts of rutile titanium dioxide, 7 parts of superfine calcined kaolin, 21.6 parts of ground calcium carbonate, 2 parts of a formaldehyde purification material and 29 parts of pure water; the blending materials comprise 0.2 part of quick bactericide, 1 part of propylene glycol, 14 parts of pure acrylic emulsion, 0.4 part of antiseptic bactericide, 1.2 parts of film-forming assistant, 0.3 part of defoaming agent and 4.6 parts of pure water.

As a further embodiment of the present invention, preferably, the thickener protective agent is hydroxyethyl cellulose ether, and the pH adjusting agent is 2-amino-2-methyl-1-propanol; the wetting agent is an anionic wetting agent; the specification of the diatomite filter aid is that the whiteness is more than or equal to 85 percent, and the 325-mesh screen residue is less than or equal to 1 percent; the specification of the superfine calcined kaolin is 1250-1500 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325 meshes is less than or equal to 0.5 percent; the specification of the heavy calcium carbonate is 700-plus-1000 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325-mesh sieve is less than or equal to 0.5 percent; the formaldehyde purification material is nano titanium dioxide, and the granularity of the nano titanium dioxide is 325 meshes, and the residue is less than or equal to 1 percent; the film-forming assistant is propylene glycol butyl ether.

Wherein, the hydroxyethyl cellulose ether thickener protective agent is adopted, and has the characteristics of good thickening, suspension, dispersion, emulsification, adhesion, film formation, moisture protection, colloid protection and the like.

2-amino-2-methyl-1-propanol is used as a pH regulator, so that the comprehensive performance of the paint can be effectively improved, and the performance of an anionic dispersant can be improved, so that the using amount of the dispersant can be reduced, the covering power and the tinting strength of the water paint can be improved, the pH can be kept slightly alkaline, the water paint can be kept stable, the reaggregation phenomenon can be reduced, and the precipitation of pigments when the pigment slurry is added into a slightly alkaline mixing material can be reduced.

The anionic wetting agent has good wetting property, can greatly reduce the surface tension of a system, improves the adhesive force of the water paint and a base material, and can obtain an ideal result when being matched with a dispersing agent for use, thereby improving the hydrophilic oleophylic value, leading the non-hydrophilic coating to be hydrophilic and uniformly dispersed in water, shielding charges, preventing sedimentation, reducing viscosity and improving the storage stability of the coating.

The defoaming agent is a high-efficiency liquid defoaming agent, has long-acting defoaming property, and can effectively remove bubbles in the production and use processes.

The diatomite filter aid is made of high-quality diatomite, is one of main base materials of the diatomite water paint, has good microporous structure, adsorption performance and compression resistance, can not only ensure that the filtered liquid obtains better flow speed ratio, but also can filter fine suspended matters, and ensures the clarity of the diatomite water paint.

Rutile type titanium dioxide is one of main base materials of diatom water paint, and the main component titanium dioxide is non-toxic and stable in chemical property, and hardly reacts with other substances at normal temperature; the water paint prepared from rutile titanium dioxide has bright color, high covering power, strong tinting strength, less consumption and multiple varieties, can play a role in protecting the stability of a medium, can enhance the mechanical strength and adhesive force of a paint film, prevent cracks, prevent ultraviolet rays and moisture from permeating and prolong the service life of the paint film.

The superfine calcined kaolin is one of main base materials of diatom water paint, is used as a filler in a water paint system, can improve whiteness, smoothness and opacity, has strong adhesive force, and can be completely fused with other materials.

The heavy calcium carbonate is one of main base materials of the diatom water paint, is a powdery inorganic filler, and has the advantages of high chemical purity, large inertia, difficult chemical reaction, good thermal stability, no decomposition at the temperature of below 400 ℃, high whiteness, low oil absorption rate, low refractive index, soft quality, dryness, no crystal water, low hardness, small abrasion value, no toxicity, no odor, good dispersibility and the like; the product volume can be increased, the cost is reduced, the processing performance (such as viscosity regulation, rheological property and vulcanization performance) is improved, the dimensional stability is improved, the reinforcement or semi-reinforcement is realized, the coating performance is improved, the physical performance (such as heat resistance, delustering performance, wear resistance, flame retardance, whiteness and glossiness) is improved, and the like; the diatom water paint is used for improving the comprehensive performance of the environment-friendly diatom water paint and reducing the cost.

The nanometer titanium dioxide is used as a formaldehyde decomposition and purification material, is an inorganic component, is nontoxic, tasteless, non-irritant, good in thermal stability and heat resistance, non-combustible, white in color, and capable of removing formaldehyde under a bright condition, and improves the environmental protection performance of the water paint.

The propylene glycol plays a role of a film forming aid in the coating and has an antifreezing function.

The pure acrylic emulsion is one of main base materials of the diatom water paint, the pure acrylic emulsion adopts acrylic ester as a raw material, and the acrylic ester has excellent outdoor weather resistance, so that the diatom paint has good weather resistance, good aging resistance and good color and gloss retention.

The film-forming assistant can promote the plastic flow and elastic deformation of the high molecular compound in a water paint system, improve the coalescence performance and form a film in a wider construction temperature range.

As a further scheme of the invention, preferably, the rutile type titanium dioxide is a mixture of R-996 and R-902 rutile type titanium dioxide, and the weight ratio of the two is 1: 1.

The R902 rutile type titanium dioxide has excellent dispersion quality, and the stable dispersion performance brings more stable product quality; stronger covering power and higher coating rate, so that the lower energy consumption of the product can obtain higher yield in shorter dispersion time; r996 rutile type titanium dioxide is special for water paint, and has the physical characteristics of high whiteness, good dispersibility, strong decolorization and the like, fine and uniform pigment particles, low content of water-soluble salt and the like after being treated by high-temperature compact silicon and special aluminum coating process. The two rutile titanium dioxide powders are mixed and added according to a proportion, so that the diatom water paint has excellent performance and can obtain higher productivity.

As a further aspect of the present invention, preferably, the antiseptic bactericide includes a coating antiseptic and a long-acting bactericide, and the weight ratio of the antiseptic to the long-acting bactericide is 1: 1.

As a further scheme of the invention, preferably, the preservative is a DL-T201 type coating bactericidal preservative, and the long-acting bactericide is a BIT type coating long-acting bactericide; the quick bactericide is a quick bactericide for the Kathon water-based paint.

The quick bactericide adopts a quick bactericide of a karson water-based coating, and can quickly kill bacteria in the production process of the environment-friendly water paint; the antiseptic bactericide prepared by blending the DL-T201 coating antiseptic and the BIT coating long-acting bactericide has strong inhibition effect on harmful microorganisms such as escherichia coli, staphylococcus aureus, bacillus subtilis, sarcina lutea, rhodococcus rhodochrous and the like, can be used for inhibiting bacteria and fungi from breeding in the production and storage processes, has good sterilization and mildew prevention functions, can have good compatibility with organic and inorganic matter components in materials, has long-acting sterilization and antiseptic effects, improves the sterilization and antiseptic properties of the diatom water paint, and prolongs the service life.

As a further aspect of the present invention, preferably, the pure acrylic emulsion may be replaced with a styrene-acrylic emulsion.

The pure acrylic emulsion and the styrene-acrylic emulsion have similar performance, the styrene-acrylic emulsion has good adhesive force, the adhesive film is transparent, and the water resistance, the oil resistance, the heat resistance and the aging resistance are good, and the pure acrylic emulsion and the styrene-acrylic emulsion can be used alternatively.

The preparation method of the environment-friendly diatom water paint comprises the following steps:

preparing materials, namely preparing the materials according to the weight part ratio of the raw materials in the formula of the environment-friendly diatom water paint, wherein the diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, a formaldehyde purification material and heavy calcium carbonate are weighed after being screened;

step two, preparing a premix, sequentially adding pure water, a thickener protective agent, a pH regulator, a wetting agent, a wetting dispersant, a defoaming agent, a diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, a formaldehyde purification material and heavy calcium carbonate into a stirring container, and stirring at the rotating speed of 350-450rpm for 10-15min, wherein the pure water can be added for multiple times according to the state of the mixed material, and the premix is obtained by uniformly stirring and mixing;

step three, preparing a blending material, namely adding pure water, a rapid bactericide, propylene glycol, a pure acrylic emulsion, an anticorrosive bactericide, a film-forming assistant and a defoaming agent into a container in sequence, and stirring at the rotating speed of 400-500rpm for 5-10min, wherein the pure water can be added for multiple times according to the state of the mixed material, and the blending material is obtained after uniform mixing and stirring;

and step four, adding the blending material into the premix, and stirring at the rotating speed of 600-700rpm for 40-60 min to fully and uniformly mix the blending material to obtain the environment-friendly diatom water paint.

Compared with the prior art, the environment-friendly diatom water paint formula has the following advantages:

the environment-friendly diatom water paint is a water paint prepared by taking the diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, heavy calcium carbonate and nano titanium dioxide as base materials, combines the environment-friendly performance of diatom ooze and the advantage of simple water paint construction, has good environment-friendly performance, simple construction, strong adhesive force, convenient coating, plump paint film after coating, good flexibility, water resistance, wear resistance, aging resistance, good color and gloss retention and excellent performance; can effectively decompose formaldehyde, has good formaldehyde purification performance and lasting purification effect, is safe and environment-friendly, and does not harm human health; has good antibacterial effect and antibacterial durability, and is not easy to breed bacteria.

The environment-friendly diatom water paint is prepared from inorganic substances and natural minerals, is environment-friendly, healthy, pollution-free and harmless to human bodies, and is simple to prepare and convenient to prepare through scientific proportioning, so that the production cost is reduced; the water paint has good adhesive force, good anti-corrosion and sterilization effects, stable performance, good weather resistance, wide application range, long service life, convenience in construction, safety and environmental friendliness, and good application prospect, and can be stored for a long time.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the present disclosure.

The invention provides an environment-friendly diatom water paint which comprises a premix and a blending material, and is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.4-0.8 part of a thickener protective agent, 0.1-0.2 part of a pH regulator, 0.2-0.5 part of a wetting agent, 0.2-0.8 part of a wetting dispersant, 0.1-0.5 part of a defoaming agent, 6-10 parts of a kieselguhr filter aid, 6-12 parts of rutile titanium dioxide, 5-10 parts of superfine calcined kaolin, 18-25 parts of ground calcium carbonate, 1.5-3 parts of a formaldehyde purification material and 25-35 parts of pure water; the blending materials comprise 0.1 to 0.3 portion of fast bactericide, 0.5 to 2 portions of propylene glycol, 12 to 16 portions of pure acrylic emulsion or styrene-acrylic emulsion, 0.2 to 0.6 portion of antiseptic bactericide, 1 to 1.5 portions of film forming additive, 0.2 to 0.5 portion of defoaming agent and 3 to 7 portions of pure water.

Preferably, the thickener protective agent is hydroxyethyl cellulose ether, and the pH regulator is 2-amino-2-methyl-1-propanol; the wetting agent is an anionic wetting agent; the specification of the diatomite filter aid is that the whiteness is more than or equal to 85 percent, and the 325-mesh screen residue is less than or equal to 1 percent; the specification of the superfine calcined kaolin is 1250-1500 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325 meshes is less than or equal to 0.5 percent; the specification of the heavy calcium carbonate is 700-plus-1000 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325-mesh sieve is less than or equal to 0.5 percent; the formaldehyde purification material is nano titanium dioxide, and the granularity of the nano titanium dioxide is 325 meshes, and the residue is less than or equal to 1 percent; the film-forming assistant is propylene glycol butyl ether.

Preferably, the rutile type titanium dioxide is a mixture of R-996 and R-902 rutile type titanium dioxide, and the weight ratio of the two is 1: 1.

Preferably, the antiseptic bactericide comprises a coating antiseptic and a long-acting bactericide, and the weight ratio of the antiseptic to the long-acting bactericide is 1: 1.

Preferably, the preservative is a DL-T201 type coating sterilization preservative, and the long-acting bactericide is a BIT type coating long-acting bactericide; the quick bactericide is a quick bactericide for the Kathon water-based paint.

In the following examples, the thickener protector is hydroxyethyl cellulose ether; the pH regulator is 2-amino-2-methyl-1-propanol; the specific type of the wetting agent is the Unionil D-504/PEG/sllcone wetting agent; the diatomite filter aid has the specification that the whiteness is more than or equal to 85 percent, and the 325-mesh screen residue is less than or equal to 1 percent; the specific type of the wetting dispersant is a Klien Dispersogen LFH wetting dispersant; the concrete model of the defoaming agent in the premix is Defoamer 334 defoaming agent, and the concrete model of the defoaming agent in the blending is FOAMSTAR A10 defoaming agent; the specification of the superfine calcined kaolin is 1250-plus-1500 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325 meshes is less than or equal to 0.5 percent; the specification of the heavy calcium carbonate is 700 plus 1000 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325 meshes is less than or equal to 0.5 percent; the formaldehyde purifying material is nano titanium dioxide, the granularity of which is 325 meshes, and the residue on the sieve is less than or equal to 1 percent; the specific type of the film-forming additive is Rhodiasolv DIB film-forming additive; the rutile type titanium dioxide is R-996 and R-902 rutile type titanium dioxide premix compounds, and the weight ratio of the two premix compounds is 1: 1; the weight ratio of the preservative to the long-acting bactericide is 1:1, the preservative is a DL-T201 type coating bactericidal preservative, and the long-acting bactericide is a BIOXVFBI long-acting bactericide in a specific model; the rapid bactericide is a BIOXCM rapid bactericide.

Example 1

An environment-friendly diatom water paint comprises a premix and a blending material, and is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.55 part of a thickener protective agent, 0.15 part of a pH regulator, 0.3 part of a wetting agent, 0.5 part of a wetting dispersant, 0.2 part of a defoaming agent, 8 parts of a kieselguhr filter aid, 9 parts of rutile titanium dioxide, 7 parts of superfine calcined kaolin, 21.6 parts of ground calcium carbonate, 2 parts of a formaldehyde purification material and 29 parts of pure water; the blending materials comprise 0.2 part of quick bactericide, 1 part of propylene glycol, 14 parts of pure acrylic emulsion, 0.4 part of antiseptic bactericide, 1.2 parts of film-forming assistant, 0.3 part of defoaming agent and 4.6 parts of pure water.

The preparation method of the environment-friendly diatom water paint in the embodiment comprises the following steps:

step two, preparing a premix, sequentially adding pure water, a thickening agent protective agent, a pH regulator, a wetting agent, a wetting dispersant, a defoaming agent, a diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, a formaldehyde purification material and heavy calcium carbonate into a stirring container, stirring at the rotating speed of 400rpm for 10min, wherein the pure water can be added in multiple times according to the state of the mixed material, and uniformly stirring and mixing to obtain the premix;

step three, preparing a blending material, sequentially adding pure water, a rapid bactericide, propylene glycol, a pure acrylic emulsion, an anticorrosive bactericide, a film forming auxiliary agent and a defoaming agent into a container, and stirring at the rotating speed of 450rpm for 5min, wherein the pure water can be added for multiple times according to the state of the mixed material, and the blending material is obtained after uniform mixing and stirring;

and step four, adding the blending materials into the premix, and stirring at the rotating speed of 600rpm for 50min to fully and uniformly mix the materials to obtain the environment-friendly diatom water paint.

Example 2

An environment-friendly diatom water paint comprises a premix and a blending material, and is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.45 part of a thickener protective agent, 0.15 part of a pH regulator, 0.3 part of a wetting agent, 0.4 part of a wetting dispersant, 0.2 part of a defoaming agent, 10 parts of a kieselguhr filter aid, 12 parts of rutile titanium dioxide, 7 parts of superfine calcined kaolin, 19.5 parts of ground calcium carbonate, 2.2 parts of a formaldehyde purification material and 26 parts of pure water; the blending materials comprise 0.2 part of quick bactericide, 1.2 parts of propylene glycol, 13 parts of pure acrylic emulsion, 0.4 part of antiseptic bactericide, 1.5 parts of film-forming assistant, 0.5 part of defoaming agent and 5 parts of pure water.

step two, preparing a premix, sequentially adding pure water, a thickening agent protective agent, a pH regulator, a wetting agent, a wetting dispersant, a defoaming agent, a diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, a formaldehyde purification material and heavy calcium carbonate into a stirring container, stirring at the rotating speed of 450rpm for 10min, wherein the pure water can be added in multiple times according to the state of the mixed material, and uniformly stirring and mixing to obtain the premix;

step three, preparing a blending material, sequentially adding pure water, a rapid bactericide, propylene glycol, a pure acrylic emulsion, an anticorrosive bactericide, a film forming auxiliary agent and a defoaming agent into a container, and stirring at a rotating speed of 500rpm for 5min, wherein the pure water can be added for multiple times according to the state of the mixed material, and the blending material is obtained after uniform mixing and stirring;

and step four, adding the blending materials into the premix, and stirring at the rotating speed of 650rpm for 50min to fully and uniformly mix the materials to obtain the environment-friendly diatom water paint.

Example 3

An environment-friendly diatom water paint comprises a premix and a blending material, and is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.6 part of a thickener protective agent, 0.1 part of a pH regulator, 0.4 part of a wetting agent, 0.6 part of a wetting dispersant, 0.3 part of a defoaming agent, 7 parts of a kieselguhr filter aid, 12 parts of rutile titanium dioxide, 8 parts of superfine calcined kaolin, 22 parts of ground calcium carbonate, 2.5 parts of a formaldehyde purification material and 25.5 parts of pure water; the blending materials comprise 0.2 part of quick bactericide, 1 part of propylene glycol, 13 parts of pure acrylic emulsion, 0.4 part of antiseptic bactericide, 1.2 parts of film-forming assistant, 0.4 part of defoaming agent and 4.8 parts of pure water.

step two, preparing a premix, sequentially adding pure water, a thickening agent protective agent, a pH regulator, a wetting agent, a wetting dispersant, a defoaming agent, a diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, a formaldehyde purification material and heavy calcium carbonate into a stirring container, stirring for 15min at the rotating speed of 450rpm, wherein the pure water can be added in multiple times according to the state of the mixed material, and uniformly stirring and mixing to obtain the premix;

step three, preparing a blending material, sequentially adding pure water, a rapid bactericide, propylene glycol, a pure acrylic emulsion, an anticorrosive bactericide, a film forming auxiliary agent and a defoaming agent into a container, and stirring at a rotating speed of 400rpm for 6min, wherein the pure water can be added for multiple times according to the state of the mixed material, and the blending material is obtained after uniform mixing and stirring;

and step four, adding the blending materials into the premix, and stirring for 45min at the rotating speed of 700rpm to fully and uniformly mix the materials to obtain the environment-friendly diatom water paint.

Example 4

An environment-friendly diatom water paint comprises a premix and a blending material, and is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.4 part of a thickener protective agent, 0.2 part of a pH regulator, 0.5 part of a wetting agent, 0.7 part of a wetting dispersant, 0.4 part of a defoaming agent, 8 parts of a kieselguhr filter aid, 10 parts of rutile titanium dioxide, 7 parts of superfine calcined kaolin, 20 parts of ground calcium carbonate, 2 parts of a formaldehyde purification material and 28 parts of pure water; the blending materials comprise 0.3 part of quick bactericide, 1.5 parts of propylene glycol, 14 parts of pure acrylic emulsion, 0.5 part of antiseptic bactericide, 1.2 parts of film-forming assistant, 0.3 part of defoaming agent and 5 parts of pure water.

step three, preparing a blending material, sequentially adding pure water, a rapid bactericide, propylene glycol, a pure acrylic emulsion, an anticorrosive bactericide, a film forming auxiliary agent and a defoaming agent into a container, and stirring at a rotating speed of 400rpm for 5min, wherein the pure water can be added for multiple times according to the state of the mixed material, and the blending material is obtained after uniform mixing and stirring;

and step four, adding the blending materials into the premix, and stirring at the rotating speed of 600rpm for 60min to fully and uniformly mix the materials to obtain the environment-friendly diatom water paint.

Example 5

An environment-friendly diatom water paint comprises a premix and a blending material, and is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.6 part of a thickener protective agent, 0.2 part of a pH regulator, 0.5 part of a wetting agent, 0.7 part of a wetting dispersant, 0.4 part of a defoaming agent, 10 parts of a kieselguhr filter aid, 8 parts of rutile titanium dioxide, 8 parts of superfine calcined kaolin, 18 parts of ground calcium carbonate, 2.2 parts of a formaldehyde purification material and 28 parts of pure water; the blending materials comprise 0.2 part of quick bactericide, 1.3 parts of propylene glycol, 14 parts of pure acrylic emulsion, 0.6 part of antiseptic bactericide, 1.4 parts of film-forming assistant, 0.4 part of defoaming agent and 5.5 parts of pure water.

step two, preparing a premix, sequentially adding pure water, a thickening agent protective agent, a pH regulator, a wetting agent, a wetting dispersant, a defoaming agent, a diatomite filter aid, rutile titanium dioxide, superfine calcined kaolin, a formaldehyde purification material and heavy calcium carbonate into a stirring container, stirring at the rotating speed of 350rpm for 10min, wherein the pure water can be added in multiple times according to the state of the mixed material, and uniformly stirring and mixing to obtain the premix;

step three, preparing a blending material, sequentially adding pure water, a rapid bactericide, propylene glycol, a pure acrylic emulsion, an anticorrosive bactericide, a film forming auxiliary agent and a defoaming agent into a container, and stirring at a rotating speed of 400rpm for 10min, wherein the pure water can be added for multiple times according to the state of the mixed material, and the blending material is obtained after uniform mixing and stirring;

Comparative example

Examples 1-5 are environment-friendly diatom water paints prepared according to the formulation of the present invention, using commercially available diatom ooze as comparative example 1 and commercially available water paints as comparative example 2, and the paints of examples 1-5 and comparative examples 1 and 2 were respectively coated on cement precast slabs of the same size according to normal construction requirements, and the following performance tests were performed.

The environmental-friendly diatom water paint prepared in examples 1-5 and comparative examples 1-2 were subjected to the following performance tests according to the standard GB/T9756-.

TABLE 1

The test results in the table 1 show that the environment-friendly diatom water paint disclosed by the invention is simple in construction, strong in adhesive force, short in surface drying time, plump and smooth in paint film, good in water resistance and wear resistance and stable in comprehensive performance.

The formaldehyde purification performance and the purification effect durability of the environment-friendly diatom water paint prepared in examples 1-5 and comparative examples 1-2 were tested according to the standard JC/T1074-2008, and the results are shown in Table 2.

TABLE 2

The test results in table 2 show that the environment-friendly diatom water paint disclosed by the invention can effectively decompose formaldehyde, has good formaldehyde purification performance and lasting purification effect, and is safe and environment-friendly.

Antibacterial performance tests are carried out on the environment-friendly diatom water paint prepared in examples 1-5 and comparative examples 1-2 according to the standard GB/T21866-.

TABLE 3

TABLE 4

The test results in tables 3 and 4 show that the environment-friendly diatom water paint disclosed by the invention has better antibacterial effect and antibacterial durability compared with the existing diatom ooze and water paint.

The environmental diatom water paints prepared in examples 1-5 were tested for the content of harmful substances according to standard GB18582-2008, and the results are shown in table 5.

TABLE 5

As can be seen from the test results in tables 3 and 4, the detection results of the harmful substance content of the environment-friendly diatom water paint disclosed by the invention meet the requirements of relevant standards, are safe and environment-friendly, and do not harm human health.

In conclusion, the environment-friendly diatom water paint provided by the invention has the advantages of environmental protection performance of diatom ooze and simple water paint construction, is simple in environment-friendly diatom water paint construction, strong in adhesive force, short in surface drying time, plump and smooth in paint film, good in water resistance and wear resistance, and stable in comprehensive performance; can effectively decompose formaldehyde, has good formaldehyde purification performance and lasting purification effect, is safe and environment-friendly, and does not harm human health; has good antibacterial effect and antibacterial durability, and is not easy to breed bacteria.

The environment-friendly diatom water paint is a water paint prepared by taking diatomite filter aid, rutile type titanium dioxide, superfine calcined kaolin, heavy calcium carbonate and nano titanium dioxide as base material raw materials, wherein the raw materials are inorganic substances and natural minerals, so that the environment-friendly diatom water paint is environment-friendly, healthy, pollution-free and harmless to human bodies, is simple to prepare and convenient to prepare by scientific proportioning, and can reduce the production cost; the water paint has good adhesive force, good anti-corrosion and sterilization effects, stable performance, good weather resistance, wide application range, long service life and good application prospect, and can be stored for a long time.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The environment-friendly diatom water paint comprises a premix and a blending material, and is characterized in that the environment-friendly diatom water paint is prepared from the following raw materials in parts by weight, wherein the premix comprises 0.4-0.8 part of a thickener protective agent, 0.1-0.2 part of a pH regulator, 0.2-0.5 part of a wetting agent, 0.2-0.8 part of a wetting dispersant, 0.1-0.5 part of a defoaming agent, 6-10 parts of a kieselguhr filter aid, 6-12 parts of rutile titanium dioxide, 5-10 parts of superfine calcined kaolin, 18-25 parts of ground calcium carbonate, 1.5-3 parts of a formaldehyde purification material and 25-35 parts of pure water; the blending materials comprise 0.1 to 0.3 portion of fast bactericide, 0.5 to 2 portions of propylene glycol, 12 to 16 portions of pure acrylic emulsion, 0.2 to 0.6 portion of antiseptic bactericide, 1 to 1.5 portions of film forming additive, 0.2 to 0.5 portion of defoaming agent and 3 to 7 portions of pure water.

2. The environment-friendly diatom water paint as claimed in claim 1, which is characterized in that the paint is prepared from the following raw materials, by weight, 0.55 part of a thickener protective agent, 0.15 part of a pH regulator, 0.3 part of a wetting agent, 0.5 part of a wetting dispersant, 0.2 part of a defoaming agent, 8 parts of a diatomite filter aid, 9 parts of rutile titanium dioxide, 7 parts of ultrafine calcined kaolin, 21.6 parts of ground calcium carbonate, 2 parts of a formaldehyde purification material and 29 parts of pure water; the blending materials comprise 0.2 part of quick bactericide, 1 part of propylene glycol, 14 parts of pure acrylic emulsion, 0.4 part of antiseptic bactericide, 1.2 parts of film-forming assistant, 0.3 part of defoaming agent and 4.6 parts of pure water.

3. The environment-friendly diatom water paint and the preparation method thereof as claimed in claim 1, wherein said thickener protectant is hydroxyethyl cellulose ether and said pH adjuster is 2-amino-2-methyl-1-propanol; the wetting agent is an anionic wetting agent; the specification of the diatomite filter aid is that the whiteness is more than or equal to 85 percent, and the 325-mesh screen residue is less than or equal to 1 percent; the specification of the superfine calcined kaolin is 1250-1500 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325 meshes is less than or equal to 0.5 percent; the specification of the heavy calcium carbonate is 700-plus-1000 meshes, the whiteness is more than or equal to 93 percent, and the residue of 325-mesh sieve is less than or equal to 0.5 percent; the formaldehyde purifying material is nano titanium dioxide, and the fineness of the nano titanium dioxide is that the residue of a 325-mesh sieve is less than or equal to 1 percent; the film-forming assistant is propylene glycol butyl ether.

4. The environment-friendly diatom water paint as claimed in claim 1, wherein the rutile titanium dioxide is a mixture of R-996 and R-902 rutile titanium dioxide in a weight ratio of 1: 1.

5. The environment-friendly diatom water paint as claimed in claim 3, wherein the antiseptic bactericide comprises a preservative and a long-acting bactericide, and the weight ratio of the preservative to the long-acting bactericide is 1: 1.

6. The environment-friendly diatom water paint as claimed in claim 5, wherein said antiseptic is a DL-T201 type paint antiseptic, and the long-acting antiseptic is a BIT type paint long-acting antiseptic; the quick bactericide is a quick bactericide for the Kathon water-based paint.

7. The environment-friendly diatom water paint as claimed in claim 1, wherein said acrylic emulsion is replaced with styrene-acrylic emulsion.

8. The preparation method of the environment-friendly diatom water paint as claimed in any one of claims 1-7, comprising the following steps: