阅读说明：本技术 一种负离子防蚊虫内墙面涂及其制备方法 (Negative ion anti-mosquito inner wall coating and preparation method thereof ) 是由 王宝清 张建飞 梁浩 张文丽 于 2021-09-22 设计创作，主要内容包括：一种负离子防蚊虫内墙面涂及其制备方法,涉及建筑物内侧面涂料,包括硅丙乳液、水溶性丙烯酸树脂、电气石粉、绢云母粉、锗石粉、钛白粉、沸石粉、驱蚊微胶囊、增稠剂、消泡剂、润湿剂、成膜助剂、无机杀菌剂、水。制备方法为：粉体超细化处理,得粉体F1；水溶性丙烯酸树脂、增稠剂预溶解,得到混合液H1；向搅拌机内加入剩余的水、润湿剂、粉体F1、沸石粉、一半量的消泡剂,无机抗菌剂,搅拌均匀,得到浆料J3；向浆料J3中加入驱蚊微胶囊、硅丙乳液、成膜助剂、剩余的消泡剂,搅拌20 min后,加入混合液H1,搅拌均匀、得浆料J4；浆料J4中加入pH调节剂,过滤得到成品。本发明具有释放负离子、驱除蚊虫双功能,驱蚊效果好。(An interior wall coating with negative ions for preventing mosquito and insect is prepared from silicone-acrylate emulsion, water-soluble acrylic resin, tourmaline powder, sericite powder, germanite powder, titanium white powder, zeolite powder, mosquito-repelling microcapsule, thickening agent, defoaming agent, wetting agent, filming assistant, inorganic bactericide and water. The preparation method comprises the following steps: performing superfine treatment on the powder to obtain powder F1; pre-dissolving water-soluble acrylic resin and a thickening agent to obtain a mixed solution H1; adding the rest water, wetting agent, powder F1, zeolite powder, half amount of defoamer and inorganic antibacterial agent into a stirrer, and uniformly stirring to obtain slurry J3; adding the mosquito-repellent microcapsule, the silicone-acrylic emulsion, the film-forming aid and the rest defoamer into the slurry J3, stirring for 20 min, adding the mixed solution H1, and uniformly stirring to obtain slurry J4; adding a pH regulator into the slurry J4, and filtering to obtain a finished product. The invention has the double functions of releasing negative ions and expelling mosquitoes and has good mosquito expelling effect.)

1. The negative ion mosquito-proof interior wall coating is characterized by comprising the following raw materials in parts by mass: 600 parts of silicone-acrylic emulsion 300, 20-40 parts of water-soluble acrylic resin, 60-100 parts of tourmaline powder, 60-100 parts of sericite powder, 20-50 parts of germanite powder, 20-50 parts of titanium dioxide, 10-30 parts of zeolite powder, 8-15 parts of mosquito-repellent microcapsules, 4-8 parts of thickening agent, 2-4 parts of defoaming agent, 2-5 parts of wetting agent, 20-50 parts of film-forming auxiliary agent, 2-6 parts of inorganic bactericide and 300 parts of water 100.

2. The negative ion mosquito-proof interior wall coating according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 500 parts of silicone-acrylic emulsion, 30 parts of water-soluble acrylic resin, 100 parts of tourmaline powder, 80 parts of sericite powder, 40 parts of germanite powder, 35 parts of titanium dioxide, 30 parts of zeolite powder, 15 parts of mosquito-repellent microcapsules, 6 parts of thickening agent, 3 parts of defoaming agent, 3 parts of wetting agent, 35 parts of film-forming aid, 4 parts of inorganic bactericide and 200 parts of water.

3. The negative ion mosquito-proof interior wall coating of claim 1, wherein the zeolite powder has a particle size of 325-1250 mesh.

4. The anion mosquito-proof interior wall coating according to claim 1 or 2, characterized in that the mosquito-proof microcapsule is a slow release type microcapsule containing more than 60% of active components by mass.

5. The anionic mosquito-repellent interior wall coating according to claim 1 or 2, characterized by comprising a pH adjuster.

6. The anion mosquito-proof interior wall coating of claim 4, wherein the mosquito-proof microcapsule contains at least one of mosquito repellent such as deet, pyrethrin and the like as an active component.

7. The negative ion mosquito-proof interior wall coating according to claim 4, wherein the mosquito-proof microcapsule contains at least 50% of at least one of azadirachtin, pyrethrin, citronella oil, eucalyptus leaf extract, and mugwort leaf extract as active ingredients.

8. A preparation method of an anion anti-mosquito interior wall coating is characterized by comprising the following steps:

s1, ultra-fining the negative ion functional powder:

selecting various raw materials according to a proportion, adding titanium dioxide and germanite powder into water which is 3 times of the mass of the powder and dissolves 1% of dispersing agent, stirring for 20 min at a rotating speed of 500 r/min by using a stirrer to obtain slurry, transferring the slurry into a sand mill, using zirconium beads with the diameter of 0.4-0.6 mm, setting the bead ratio to be 8:1, setting the rotating speed to be 2500 r/min, grinding until the particle size D90 of the powder is less than 1 mu m, and finishing grinding to obtain slurry J1;

adding tourmaline powder and sericite powder into water which is 3 times of the powder mass and is dissolved with 1% of dispersant, stirring for 20 min at 500 r/min by a stirrer, mixing the slurry with slurry J1, then transferring into a sand mill for sand milling, using zirconium beads with the diameter of 0.4-0.6 mm, setting the bead ratio to be 8:1, setting the rotating speed to be 2500 r/min, grinding until the particle size D90 of the powder is less than 1 mu m, finishing grinding to obtain slurry J2;

setting the air inlet temperature of a spray dryer to be 200 ℃, pumping the slurry J2 into the spray dryer by using a peristaltic pump after the temperature is raised to 200 ℃, setting the rotation speed of the peristaltic pump to be 15.0 rpm, and carrying out spray drying to obtain negative ion functional powder F1;

s2: pre-dissolving water-soluble acrylic resin and a thickening agent:

dissolving a thickening agent in water with the mass being 10 times that of the thickening agent, uniformly mixing, adding water-soluble acrylic resin, and uniformly stirring and mixing at the rotating speed of 300 r/min by using a stirrer to obtain a mixed solution H1 for later use;

s3: adding the rest water (the rest water is obtained after removing the water used for dissolving the thickening agent by the water selected in proportion) into a stirrer, and sequentially adding a wetting agent, negative ion functional powder F1, zeolite powder, a half amount of defoaming agent and an inorganic antibacterial agent into the water in the stirrer at the rotating speed of 300 r/min by the stirrer; then the rotating speed of the stirrer is increased to 1600 r/min, and the mixture is stirred at a high speed for 30-45 min, so that the powder is uniformly dispersed in water to obtain slurry J3;

s4: reducing the rotating speed of the stirrer to 500 r/min, sequentially adding the mosquito-repellent microcapsules, the silicone-acrylic emulsion, the film-forming aid and the residual defoaming agent into the slurry J3, stirring for 20 min, adding the mixed solution H1, and uniformly stirring to obtain a semi-finished slurry J4;

s5: adding a pH regulator into the semi-finished product slurry J4 at a rotation speed of 300 r/min by using a stirrer, regulating the pH value of the semi-finished product slurry J4 to 7-8, and filtering by using a 200-mesh filter screen to obtain a finished product.

Technical Field

The invention relates to an interior side coating of a building, in particular to an anion mosquito-proof interior wall coating capable of releasing anions and expelling mosquitoes and a preparation method thereof.

Background

As is known, the interior wall coating of the building plays a role in beautifying the building, and can effectively protect the wall and delay the adverse effects of external factors such as moisture, friction, illumination and the like on the wall. With the development of coating technology, the basic composition of interior wall coatings is basically shaped, and the basic raw materials comprise matrix emulsion or water-based resin, calcium powder, titanium dioxide, kaolin and other pigments and fillers, dispersing agents, wetting agents, defoaming agents, pH regulators, tackifiers, flatting agents and other auxiliaries.

With the improvement of living standard of people, higher requirements are also put forward on articles and materials used in daily life, interior wall coatings are no exception, and besides the basic decoration and protection functions, coating manufacturers begin to endow more functions to the coatings so as to meet various demands of consumers. Such as heat-insulating coatings, fire-retardant coatings, self-cleaning coatings, heat-insulating coatings, sun-screening coatings, infrared heat-dissipating coatings, etc., and are being increasingly used in general housing applications due to the use of special application environments.

The air negative ions are known as 'air vitamins', and various researches show that the negative ions have the advantages of air freshening, deodorization, antibiosis, immunity enhancement and the like, the physical health conditions of nearby residents such as seasides, forests and the like are generally superior to those of urban residents, and the negative ions have great relation with higher negative ions in the air in the environment. The negative ion coating is prepared by adding effective components capable of generating negative ions into a coating formula, so that the negative ions are continuously released in normal indoor environment without additionally providing heat, electricity and the like, and the indoor air environment is improved. The existing negative ion coating has small negative ion release amount and poor health care effect on human body.

Mosquito prevention is an important subject of daily home furnishing, and how to effectively, safely and durably drive mosquitoes and prevent insects is always a consumer's appeal and is also an effort direction of scientific researchers. In recent years, the technology of mosquito-repellent microcapsules has become mature and is put into the market under the continuous development of technicians.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provide the negative ion mosquito-proof inner wall coating which can release a large amount of negative ions for a long time, repel mosquitoes for a long time, has good mosquito-repellent effect, is healthy and environment-friendly, and the preparation method thereof.

The technical scheme adopted by the invention for solving the defects of the prior art is as follows:

the negative ion mosquito-proof interior wall coating is characterized by comprising the following raw materials in parts by mass: 600 parts of silicone-acrylic emulsion 300, 20-40 parts of water-soluble acrylic resin, 60-100 parts of tourmaline powder, 60-100 parts of sericite powder, 20-50 parts of germanite powder, 20-50 parts of titanium dioxide, 10-30 parts of zeolite powder, 8-15 parts of mosquito-repellent microcapsules, 4-8 parts of thickening agent, 2-4 parts of defoaming agent, 2-5 parts of wetting agent, 20-50 parts of film-forming auxiliary agent, 2-6 parts of inorganic bactericide and 300 parts of water 100.

As a preferred scheme, the negative ion anti-mosquito interior wall coating comprises the following raw materials in parts by weight: 500 parts of silicone-acrylic emulsion, 30 parts of water-soluble acrylic resin, 100 parts of tourmaline powder, 80 parts of sericite powder, 40 parts of germanite powder, 35 parts of titanium dioxide, 30 parts of zeolite powder, 15 parts of mosquito-repellent microcapsules, 6 parts of thickening agent, 3 parts of defoaming agent, 3 parts of wetting agent, 35 parts of film-forming aid, 4 parts of inorganic bactericide and 200 parts of water.

Furthermore, the invention comprises 1-5 parts of pH regulator (according to the weight part). The product pH can be adjusted to 7-8.

Furthermore, the mosquito-repellent microcapsule is a slow-release microcapsule containing more than 60% of active components by mass.

Furthermore, the mosquito-repellent microcapsule contains at least 50% of active components of at least one of natural plant extract such as pyrethrin, eucalyptus extract, folium artemisiae argyi extract and the like.

The mosquito-repellent microcapsule contains active components including at least one of mosquito repellent agents such as deet, deet and pyrethrin.

The zeolite powder has the particle size of 325-1250 meshes.

The defoaming agent is a mineral oil defoaming agent; the thickening agent is a polyurethane thickening agent; the pH regulator is AMP-95; the inorganic antibacterial agent is a nano zinc antibacterial agent; the mosquito-repellent microcapsule can be prepared by selecting a mosquito-repellent preparation in an individualized way, and can also be selected from common mosquito-repellent microcapsules on the market, such as the mosquito-repellent microcapsules produced by Anhui Meikedi intelligent microcapsule technology company Limited and the natural mosquito-repellent microcapsules produced by Changzhou Meisheng biological material company Limited.

A preparation method of an anion anti-mosquito interior wall coating is characterized by comprising the following steps:

s1, ultra-fining the negative ion functional powder:

selecting various raw materials according to a proportion, adding titanium dioxide and germanite powder into water which is 3 times of the mass of the powder and dissolves 1% of dispersing agent, stirring for 20 min at a rotating speed of 500 r/min by using a stirrer to obtain slurry, transferring the slurry into a sand mill, using zirconium beads with the diameter of 0.4-0.6 mm, setting the bead ratio to be 8:1, setting the rotating speed to be 2500 r/min, grinding until the particle size D90 of the powder is less than 1 mu m, and finishing grinding to obtain slurry J1;

adding tourmaline powder and sericite powder into water which is 3 times of the powder mass and is dissolved with 1% of dispersant, stirring for 20 min at 500 r/min by a stirrer, mixing the slurry with slurry J1, then transferring into a sand mill for sand milling, using zirconium beads with the diameter of 0.4-0.6 mm, setting the bead ratio to be 8:1, setting the rotating speed to be 2500 r/min, grinding until the particle size D90 of the powder is less than 1 mu m, finishing grinding to obtain slurry J2;

setting the air inlet temperature of a spray dryer to be 200 ℃, pumping the slurry J2 into the spray dryer by using a peristaltic pump after the temperature is raised to 200 ℃, setting the rotation speed of the peristaltic pump to be 15.0 rpm, and carrying out spray drying to obtain negative ion functional powder F1;

s2: pre-dissolving water-soluble acrylic resin and a thickening agent:

dissolving a thickening agent in water with the mass being 10 times that of the thickening agent, uniformly mixing, adding water-soluble acrylic resin, and uniformly stirring and mixing at the rotating speed of 300 r/min by using a stirrer to obtain a mixed solution H1 for later use;

s3: adding the rest water (the rest water is obtained after removing the water used for dissolving the thickening agent by the water selected in proportion) into a stirrer, and sequentially adding a wetting agent, negative ion functional powder F1, zeolite powder, a half amount of defoaming agent and an inorganic antibacterial agent into the water in the stirrer at the rotating speed of 300 r/min by the stirrer; then the rotating speed of the stirrer is increased to 1600 r/min, and the mixture is stirred at a high speed for 30-45 min, so that the powder is uniformly dispersed in water to obtain slurry J3;

s4: reducing the rotating speed of the stirrer to 500 r/min, sequentially adding the mosquito-repellent microcapsules, the silicone-acrylic emulsion, the film-forming aid and the residual defoaming agent into the slurry J3, stirring for 20 min, adding the mixed solution H1, and uniformly stirring to obtain a semi-finished slurry J4;

s5: adding a pH regulator into the semi-finished product slurry J4 at a rotation speed of 300 r/min by using a stirrer, regulating the pH value of the semi-finished product slurry J4 to 7-8, and filtering by using a 200-mesh filter screen to obtain a finished product.

The dispersant used in the powder grinding process is Auda water-based ceramic dispersant AD 8098.

In the interior wall coating prepared by the invention, the tourmaline and the sericite have the function of ionizing water molecules and oxygen molecules in the air, thereby achieving the function of releasing negative ions. This effect is effective for a long period of time, and therefore, the coating material of the present invention can achieve the effect of releasing negative ions continuously. Meanwhile, sericite has good sealing property and aging resistance, and can improve the mechanical property and weather resistance of the coating layer; the germanium stone powder and the titanium dioxide are semiconductor materials with thermal activity and optical activity respectively, 32 electrons are arranged around a germanium atomic nucleus, 4 electrons on an outermost orbit do irregular motion, and once the temperature rises, one electron on the outermost orbit is stimulated to move off the orbit; similarly, titanium dioxide which is a component of titanium dioxide can absorb photons under the action of ultraviolet light in natural light, increase the electron transfer capacity and enhance the ionization capacity of tourmaline.

The ability of tourmaline and sericite to release negative ions and the optical activity and thermal activity of germanite and titanium dioxide are all more excellent in an ultrafine state, especially when the particle size reaches the nanometer level, so that the four powders used in the invention can be mixed and ultrafine ground to form a micro-nano structure of semiconductor material coated tourmaline powder, and a better functional synergistic effect can be achieved.

The zeolite has a microporous structure inside, so that the specific surface area of the material can be greatly increased, the contact area of the coating layer and water and oxygen molecules in the air can be increased, ionization is promoted, and the release amount of negative ions is increased. Meanwhile, due to the pore structure, the effective components of the mosquito-repellent microcapsules in the coating layer can be conveniently diffused, and the mosquito-repellent effect is improved.

The tourmaline has permanent electric polarity, and its surface has 10 μm in the range of tens of micrometers⁷The electric field intensity of V/m can electrolyze water molecules, improve the interface activity of the water molecules, reduce the association degree of the water molecules, reduce intermolecular clusters, activate the water molecules and enhance the dissolving power and the penetrability of the molecules.

The invention combines the enhanced ionization capacity of the tourmaline with the mosquito-proof function of the mosquito-proof capsule, utilizes the characteristic of the tourmaline, improves the molecular activity of water molecules in the coating layer and active components (mosquito-proof components) in the mosquito-proof capsule, improves the permeability of the coating layer, improves the release capacity of the active components, and is combined with the microporous structure of the zeolite to generate better mosquito-proof effect.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

To facilitate an understanding of the invention, specific examples of the invention are set forth below for a further description of the invention:

example 1

The negative ion mosquito-proof inner wall coating comprises the following raw materials in parts by mass:

300 parts of silicone-acrylic emulsion, 40 parts of water-soluble acrylic resin, 80 parts of tourmaline powder, 100 parts of sericite powder, 20 parts of germanite powder, 50 parts of titanium dioxide (anatase), 10 parts of zeolite powder, 12 parts of mosquito-repellent microcapsules, 5 parts of a thickening agent, 2 parts of a defoaming agent, 2 parts of a wetting agent, 20 parts of a film-forming assistant, 2 parts of an inorganic bactericide and 120 parts of water. The mosquito-repellent microcapsule is produced by Anhui Meikedi intelligent microcapsule science and technology limited.

The preparation method of the negative ion anti-mosquito interior wall coating is characterized by comprising the following steps:

s1, ultra-fining the negative ion functional powder:

selecting various raw materials according to a proportion, adding 50 parts of titanium dioxide (anatase type) and 20 parts of germanite powder into 210 parts of water in which 2.1 parts of Auda waterborne ceramic dispersant AD8098 is dissolved, stirring for 20 min at the rotating speed of 500 r/min by using a stirrer to obtain slurry, transferring the slurry into a sand mill, using zirconium beads with the diameter of 0.4-0.6 mm and the bead-to-bead ratio of 8:1, setting the rotating speed of 2500 r/min, sampling and testing the particle size every 5 min after grinding for 40 min, grinding until the particle size D90 of powder (titanium dioxide and germanite powder) is less than 1 mu m, and finishing grinding to obtain the slurry J1. Adding 80 parts of tourmaline powder and 100 parts of sericite powder into 540 parts of water dissolved with 5.4 parts of Aoda water-based ceramic dispersant AD8098, stirring for 20 min at 500 r/min by a stirrer, mixing the slurry with slurry J1, then transferring into a sand mill for sand milling, using zirconium beads with the diameter of 0.4-0.6 mm, the bead-to-bead ratio being 8:1, setting the rotating speed to be 2500 r/min, sampling and testing the particle size every 5 min after grinding for 40 min, grinding until the particle size D90 of the powder (the tourmaline powder and the sericite powder) is less than 1 mu m, and finishing grinding to obtain the slurry 39J 2. Setting the air inlet temperature of the spray dryer to be 200 ℃, pumping the slurry J2 into the spray dryer by using a peristaltic pump after the temperature is raised to 200 ℃, setting the rotation speed of the peristaltic pump to be 15.0 rpm, and carrying out spray drying to obtain the negative ion functional powder F1.

S2: pre-dissolving water-soluble acrylic resin and a thickening agent: dissolving 5 parts of thickening agent in 50 parts of water, uniformly mixing, adding 40 parts of water-soluble acrylic resin, and uniformly stirring and mixing at the rotating speed of 300 r/min by using a stirrer to obtain a mixed solution H1 for later use;

s3: adding 70 parts of water into a material mixing barrel of a stirrer, and sequentially adding 2 parts of wetting agent, negative ion functional powder F1, 10 parts of zeolite powder with the particle size of 350-650 meshes, 1 part of defoaming agent and 2 parts of inorganic antibacterial agent into the water in the material mixing barrel of the stirrer at the rotating speed of 300 r/min by the stirrer; then the rotating speed of the stirrer is increased to 1600 r/min, and the mixture is stirred at a high speed for 30-45 min, so that the powder (the negative ion functional powder F1 and the zeolite powder) is uniformly dispersed in water to obtain slurry J3;

s4: the rotating speed of the stirrer is reduced to 500 r/min, 12 parts of mosquito-repellent microcapsules, 300 parts of silicone-acrylic emulsion, 20 parts of film forming auxiliary agent and 1 part of defoaming agent are sequentially added into the slurry J3 in the stirrer, after the mixture is stirred for 20 min, the mixed solution H1 is added into the stirrer, and the mixture is uniformly stirred to obtain a semi-finished slurry J4;

s5: adding 1 part of AMP-95 into the semi-finished slurry J4 in the stirrer at the rotating speed of 300 r/min by using the stirrer, and adjusting the pH value of the semi-finished slurry J4 to 7-8 so as to ensure the stability of a system; filtering with 200 mesh filter screen, and packaging to obtain the final product.

Example 2

An anion mosquito-proof interior wall coating comprises the following raw materials in parts by weight:

500 parts of silicone-acrylic emulsion, 30 parts of water-soluble acrylic resin, 100 parts of tourmaline powder, 80 parts of sericite powder, 40 parts of germanite powder, 35 parts of titanium dioxide (anatase type), 30 parts of zeolite powder, 15 parts of mosquito-repellent microcapsules, 6 parts of a thickening agent, 3 parts of a defoaming agent, 3 parts of a wetting agent, 35 parts of a film-forming assistant, 4 parts of an inorganic bactericide and 200 parts of water. The mosquito-repellent microcapsule is a slow-release microcapsule containing 85% of active components by mass; the mosquito-repellent microcapsule contains active components including pyrethrin 60%, eucalyptus leaf extract 20% and folium Artemisiae Argyi extract 20%.

The preparation method of the negative ion anti-mosquito interior wall coating is characterized by comprising the following steps:

s1, ultra-fining the negative ion functional powder:

selecting various raw materials according to a proportion, adding 35 parts of titanium dioxide (anatase type) and 40 parts of germanite powder into 225 parts of water in which 2.25 parts of Auda waterborne ceramic dispersant AD8098 is dissolved, stirring for 20 min at the rotating speed of 500 r/min by using a stirrer to obtain slurry, transferring the slurry into a sand mill, using zirconium beads with the diameter of 0.4-0.6 mm and the bead-to-bead ratio of 8:1, setting the rotating speed of 2500 r/min, sampling and testing the particle size every 5 min after grinding for 40 min, grinding until the particle size D90 of powder (titanium dioxide and germanite powder) is less than 1 mu m, and finishing grinding to obtain the slurry J1. Adding 100 parts of tourmaline powder and 80 parts of sericite powder into 540 parts of water dissolved with 5.4 parts of Adam's waterborne ceramic dispersant AD8098, stirring for 20 min at 500 r/min by a stirrer, mixing the slurry with slurry J1, then transferring into a sand mill for sand milling, using zirconium beads with the diameter of 0.4-0.6 mm, the bead-to-bead ratio being 8:1, setting the rotating speed to be 2500 r/min, sampling and testing the particle size every 5 min after grinding for 40 min, grinding until the particle size D90 of the powder (the tourmaline powder and the sericite powder) is less than 1 mu m, and finishing grinding to obtain the slurry 39J 2. Setting the air inlet temperature of the spray dryer to be 200 ℃, pumping the slurry J2 into the spray dryer by using a peristaltic pump after the temperature is raised to 200 ℃, setting the rotation speed of the peristaltic pump to be 15.0 rpm, and carrying out spray drying to obtain the negative ion functional powder F1.

S2: pre-dissolving water-soluble acrylic resin and a thickening agent: dissolving 6 parts of thickening agent in 60 parts of water, uniformly mixing, adding 30 parts of water-soluble acrylic resin, and uniformly stirring and mixing at the rotating speed of 300 r/min by using a stirrer to obtain a mixed solution H1 for later use;

s3: adding 140 parts of water into a material mixing barrel of a stirrer, and sequentially adding 3 parts of wetting agent, negative ion functional powder F1, 30 parts of zeolite powder with the particle size of 500-800 meshes, 1.5 parts of defoaming agent and 4 parts of inorganic antibacterial agent into the water in the material mixing barrel of the stirrer at the rotating speed of 300 r/min by the stirrer; then the rotating speed of the stirrer is increased to 1600 r/min, and the mixture is stirred at a high speed for 30-45 min, so that the powder (the negative ion functional powder F1 and the zeolite powder) is uniformly dispersed in water to obtain slurry J3;

s4: the rotating speed of the stirrer is reduced to 500 r/min, 15 parts of mosquito-repellent microcapsules, 500 parts of silicone-acrylic emulsion, 35 parts of film-forming auxiliary agent and 1.5 parts of defoaming agent are sequentially added into the slurry J3 in the stirrer, after stirring for 20 min, the mixed solution H1 is added into the stirrer, and the mixture is uniformly stirred to obtain a semi-finished slurry J4;

s5: adding 2 parts of AMP-95 into the semi-finished slurry J4 in the stirrer at the rotating speed of 300 r/min by using the stirrer, and adjusting the pH value of the semi-finished slurry J4 to 7-8 so as to ensure the stability of a system; filtering with 200 mesh filter screen, and packaging to obtain the final product.

Example 3

The negative ion mosquito-proof inner wall coating comprises the following raw materials in parts by mass:

600 parts of silicone-acrylic emulsion, 20 parts of water-soluble acrylic resin, 60 parts of tourmaline powder, 60 parts of sericite powder, 30 parts of germanite powder, 20 parts of titanium dioxide (anatase type), 20 parts of zeolite powder, 8 parts of mosquito-repellent microcapsules, 8 parts of a thickening agent, 4 parts of a defoaming agent, 4 parts of a wetting agent, 40 parts of a film-forming assistant, 5 parts of an inorganic bactericide and 160 parts of water. The mosquito-repellent microcapsule is produced by Anhui Meikedi intelligent microcapsule science and technology limited.

The preparation method of the negative ion anti-mosquito interior wall coating is characterized by comprising the following steps:

s1, ultra-fining the negative ion functional powder:

selecting various raw materials according to a proportion, adding 20 parts of titanium dioxide (anatase type) and 30 parts of germanite powder into 150 parts of water in which 1.5 parts of Adam's waterborne ceramic dispersant AD8098 is dissolved, stirring for 20 min at a rotating speed of 500 r/min by using a stirrer to obtain slurry, transferring the slurry into a sand mill, using zirconium beads with the diameter of 0.4-0.6 mm and the bead-to-bead ratio of 8:1, setting the rotating speed of 2500 r/min, sampling and testing the particle size every 5 min after grinding for 40 min, grinding until the particle size D90 of powder (titanium dioxide and germanite powder) is less than 1 mu m, and finishing grinding to obtain slurry J1. Adding 60 parts of tourmaline powder and 60 parts of sericite powder into 360 parts of water in which 3.6 parts of Australian water-based ceramic dispersant AD8098 is dissolved, stirring for 20 min at 500 r/min by using a stirrer, mixing the slurry with slurry J1, then transferring into a sand mill for sand milling, using zirconium beads with the diameter of 0.4-0.6 mm, the bead-to-bead ratio being 8:1, setting the rotating speed to be 2500 r/min, sampling and testing the particle size every 5 min after grinding for 40 min, grinding until the particle size D90 of the powder (the tourmaline powder and the sericite powder) is less than 1 mu m, and finishing grinding to obtain the slurry J2. Setting the air inlet temperature of the spray dryer to be 200 ℃, pumping the slurry J2 into the spray dryer by using a peristaltic pump after the temperature is raised to 200 ℃, setting the rotation speed of the peristaltic pump to be 15.0 rpm, and carrying out spray drying to obtain the negative ion functional powder F1.

S2: pre-dissolving water-soluble acrylic resin and a thickening agent: dissolving 8 parts of thickening agent in 80 parts of water, uniformly mixing, adding 20 parts of water-soluble acrylic resin, and uniformly stirring and mixing at the rotating speed of 300 r/min by using a stirrer to obtain a mixed solution H1 for later use;

s3: adding 80 parts of water into a material mixing barrel of a stirrer, and sequentially adding 4 parts of wetting agent, negative ion functional powder F1, 20 parts of zeolite powder with the particle size of 850-1150 meshes, 2 parts of defoaming agent and 5 parts of inorganic antibacterial agent into the water in the material mixing barrel of the stirrer at the rotating speed of 300 r/min by the stirrer; then the rotating speed of the stirrer is increased to 1600 r/min, and the mixture is stirred at a high speed for 30-45 min, so that the powder (the negative ion functional powder F1 and the zeolite powder) is uniformly dispersed in water to obtain slurry J3;

s4: the rotating speed of the stirrer is reduced to 500 r/min, 8 parts of mosquito-repellent microcapsules, 600 parts of silicone-acrylic emulsion, 40 parts of film forming auxiliary agent and 2 parts of defoaming agent are sequentially added into the slurry J3 in the stirrer, after stirring for 20 min, the mixed solution H1 is added into the stirrer, and the mixture is uniformly stirred to obtain a semi-finished slurry J4;

s5: adding 3 parts of AMP-95 into the semi-finished slurry J4 in the stirrer at the rotating speed of 300 r/min by using the stirrer, and adjusting the pH value of the semi-finished slurry J4 to 7-8 so as to ensure the stability of a system; filtering with 200 mesh filter screen, and packaging to obtain the final product.

Comparative example 1

Except that the germanite powder and the titanium dioxide powder are replaced by the same mass of coarse whiting powder, the components, the content and the preparation method of the formula are the same as those of the example 1.

Comparative example 2

Except that the germanite powder is replaced by the same mass of coarse whiting powder, the components, the content and the preparation method of the formula are the same as those of the embodiment 1.

Comparative example 3

Except that the titanium dioxide is replaced by the same mass of coarse whiting powder, the components, the content and the preparation method of the formula are the same as those of the embodiment 1.

Comparative example 4

Except that the tourmaline powder, the germanite powder and the titanium dioxide powder are replaced by the heavy calcium powder with the same mass, the components, the content and the preparation method of the formula are the same as those in the example 1.

Comparative example 5

Except that the zeolite powder is replaced by the same mass of heavy calcium powder, the components, the content and the preparation method of the formula are the same as those of the example 1.

Comparative example 6

Except that the mosquito-repellent capsule is replaced by the same mass of the heavy calcium carbonate powder, the components, the content and the preparation method of the other formula are the same as those in the example 1.

300g of the negative ion anti-mosquito inner wall coatings prepared in the examples 1 to 3 and the comparative examples 1 to 6 are uniformly coated on 50 cm x 50 cm asbestos boards, and are naturally air-dried in a ventilated and cool place for 7 days to prepare the asbestos boards for testing.

And placing the asbestos plates for testing in a 100 cm by 100 cm glass experiment chamber, placing the experiment chamber in a place where sunlight can be irradiated, and keeping the air humidity in the chamber at 60-65% and the temperature at 23-25 ℃ to test the negative ion release efficiency of the coating. And (3) after 24h, using an AIC-1000 negative ion detector to perform a negative ion release amount test, counting every 2 min at a position which is 10 cm away from the coating in the experimental cabin, calculating the average value of 10 times of counting, taking the average value as the negative ion release amount data of the coating, and performing parallel comparison.

The testing asbestos plate is horizontally placed in the center of the bottom of a 100 cm by 100 cm glass experiment chamber, the experiment chamber is placed in a place where sunlight can be irradiated, the air humidity in the chamber is kept at 60-65%, the temperature in the chamber is kept at 23-25 ℃, 10 cm by 10 cm square holes are formed in the upper, front, rear, left and right side faces of the experiment chamber, 8 pieces of mosquito sticking paper are pasted on the inner wall of the experiment chamber, the experiment chamber is uniformly arranged in the same chamber for planting green 5m by 2m (the length, the width and the height are respectively 5m, 5m and 2m), 200 mosquitoes are placed in the chamber, and the number of the mosquitoes on the mosquito sticking paper is counted after 48 h and 96 h.

The test results of the examples and comparative examples are as follows:

as can be seen from the comparative example and the embodiment, the negative ion anti-mosquito inner wall coating has the negative ion release amount of 600/cm³And the indoor environment can be effectively improved. The mosquito repelling device has the advantages that the moving range of mosquitoes is mostly outside a small laboratory, and the mosquito repelling device has a good mosquito repelling effect.

As can be seen from a comparison of the data in example 1 and comparative example 1, the ultrafine treated germanite powder and TiO₂The capability of the tourmaline to release negative ions can be effectively excited, and the excitation capabilities of the tourmaline and the comparative example 2 and the comparative example 3 have a synergistic effect and are more effective than the excitation of a single component;

the comparison of the data of the embodiment 1 and the comparative examples 1 and 4 shows that the permanent electrode of the tourmaline can activate the molecular activity of the active components in the mosquito-repellent microcapsule while electrolyzing peripheral water molecules to form negative ions, thereby achieving better mosquito-repellent effect;

through comparison of data of example 1 and comparative example 5, the zeolite powder is added, so that a micro-channel structure is introduced, the surface area of the coating is increased, the contact probability of tourmaline and water molecules is increased, and the release amount of negative ions is improved. Meanwhile, the micro-channel structure enables active components in the mosquito-repellent microcapsules in the coating to be more easily transferred to the surface of the coating, and the mosquito-repellent effect of the coating is improved.

The invention selects safe natural ore raw materials without toxic and side effects as a permanent negative ion release source, enhances the functions of the natural ore raw materials by germanite (the atomic arrangement in germanium crystals is the same as that of diamond, the germanium is hard and brittle, and the chemical property of the germanium is stable) and titanium dioxide, simultaneously adds the mosquito repelling function into a coating formula by a microcapsule slow release technology, constructs a micro-channel structure in the coating by zeolite, and is convenient for the effective release of negative ions and mosquito repelling components in the coating, thereby obtaining the inner wall coating which can release the negative ions for a long time under the conditions of natural light and heat without additional energy, build an indoor air environment similar to forest and seaside, simultaneously, the mechanical property of the wall reaches the standard, and the inner wall coating has the effects of repelling mosquitoes and has good mosquito repelling effect. Compared with common negative ion coatings, the invention does not contain high-radioactivity and other risky components, and meanwhile, compared with rare earth compounds, the activating component has low cost and easy obtainment of raw materials, thereby having wide application foundation. The mosquito repellent component is wrapped by the microcapsule and is matched with a micro-channel release structure, so that the long-acting property of the mosquito repellent function is ensured, the high-efficiency release of the internal component is also ensured, and meanwhile, the micro-electrode structure of the tourmaline can activate the molecular activity of the effective active component in the mosquito repellent microcapsule, improve the permeability and diffusivity and improve the action effect.

The above description is only an implementation example of the present invention, and the present invention is not limited to the above embodiment, and other changes and modifications directly derived or suggested by those skilled in the art without departing from the spirit and concept of the present invention should be considered as included in the protection scope of the present invention.