KR20060114159A - The functional water paint composition and method for preparing the same - Google Patents

Abstract

Provided are a method for preparing a functional aqueous paint, and a functional aqueous paint prepared by the method which has a deodorizing effect, a moisturizing effect and an insecticidal effect. The method comprises the steps of (S1) mixing 30-45 parts by weight of water, 5-25 parts by weight of an inorganic additive having a particle size of 250-380 mesh and a radiation rate of 0.9 or more, 3-10 parts by weight of anatase titanium dioxide having a particle size of 15-30 nm, 3-10 parts by weight of a Cu-Mn-Co oxide and 1-5 parts by weight of a sepiolite powder as an inorganic viscosity controller; (S2) dispersing the mixture to obtain a grind gauge of Hegman No.3 or more; (S3) mixing the dispersed mixture with 20-35 parts by weight of an acrylic emulsion resin, 0.1-3.0 parts by weight of alpha-methrin and 1-2 parts by weight of an antifoaming agent and a dispersant; and (S4) stirring the obtained one.

Description

Functional water paint composition and method for preparing the same

1 is a block diagram showing the manufacturing process of the functional water-based paint according to the invention.

<Explanation of symbols for the main parts of the drawings>

S1: first mixing step S2: dispersion step

S3: secondary mixing step S4: stirring step

The present invention relates to a functional aqueous coating composition and a method for manufacturing the same, and more specifically, to the decomposition of contaminants by adding pigments and special additives to acrylic emulsion resin paints with innovative EBS technology used for interior and exterior of buildings. The present invention relates to a functional aqueous coating composition for imparting functionality such as deodorization, moisture retention, heat retention, ventilation, and insect repellent, and a method for producing the same.

Commercially available synthetic resin emulsion paint is an aqueous paint made of synthetic resin emulsion resins and pigments as main ingredients, and as additives for paints such as surfactants and viscosity modifiers. Diluents are used as water. It is a general paint widely used for painting interior and exterior walls because it has no smell and has high alkali resistance and water vapor transmission rate.

As such resins, vinyl acetate-based, styrene-butadiene-based, acrylic copolymer-based, and vinyl acetate copolymer-based emulsion resin coatings are well known, but they show only basic performances as paints, such as protecting the coating and exhibiting a beautiful appearance. .

Residential buildings such as cement-concrete apartments coated with such general water-based paints were additionally performed to remove odors such as chemicals remaining in the room, bathrooms, kitchens, and waste bins.

Therefore, while shortening the work process, there is a warming function such as warmth, moisturizing, breathability, such as human skin and environmentally friendly; The effects of decomposing and deodorizing pollutants when light is emitted; There is a need for paints that can provide additional functions such as insect repelling or insecticidal effects on insects such as flies, mosquitoes, cockroaches, ants, and the like that have touched the coating. In other words, it is necessary to provide a building water-based paint having functional properties such as thermal insulation moisturizing paint, photocatalyst paint, insect repellent paint.

Accordingly, the present invention has been made to solve the above conventional problems,

Energy can be saved by maintaining the warmth of the building, and it is intended to maintain a comfortable residential environment by equipping it with the function of controlling indoor humidity by keeping moisture and breathability. That is, an object of the present invention is to provide a paint capable of adding breathability and moisture retention properties by adding a material having high moisture retention and high thermal emissivity to the paint and using a special emulsion resin having moisture retention and breathability as the base coating resin.

In addition, the present invention by adding a photocatalyst and insect repellent further removes the harmful pollutants (e.g., formalin, organic solvent, etc.) harmful to the human body generated in new apartments, and various odors generated in the toilet kitchen, trash cans by photolysis, flies To provide pesticides or mosquitoes, cockroaches, ants pests or avoid to provide an environmentally friendly paint composition and manufacturing method that can maintain a pleasant environment.

Functional aqueous paint production method of the present invention for achieving the above object,

In the aqueous coating method for imparting functionality, 30 to 45 parts by weight of water; 5 to 25 parts by weight of an inorganic additive having an emissivity of 0.9 or more, pulverized to about 250 to 380 mesh; 3 to 10 parts by weight of anatase titanium dioxide having particles of 15 to 30 nm; 3 to 10 parts by weight of a Cu-Mn-Co oxide; A first mixing step of mixing 1 to 5 parts by weight of a sepiolite (SEPIOLITE; Hydrated Mg-silicate) powder as an inorganic viscosity modifier; The softening degree of the primary mixture is Hegman No. A dispersion step of dispersing at least three; 20 to 35 parts by weight of the acrylic emulsion resin in the dispersed mixture; 0.1 to 3.0 parts by weight of an insect repellent alphamethrin; A second mixing step of mixing 1 to 2 parts by weight of a defoaming agent and a dispersant as other additives; It consists of a stirring step of stirring the secondary mixture.

The inorganic additive is used by mixing one or more from the group consisting of ocher, elvan, gansumite, jade, and may be further added as a colorant to other additives to implement a variety of colors.

The emulsion resin uses a special emulsion resin (ELIOKEM's Substituted-styrene acrylate copolymer) having excellent breathability, and is a functional pigment (trade name: DAIPYROXIDE), which is a recently developed inorganic composite oxide fine powder with Cu-Mn-Co oxide fine powder. .

The emissivity is synonymous with the emissivity and the emissivity of the abnormal black body is set to 1, and the relative emissivity compared with the abnormal black body represented by an object is called the emissivity of the object. Radiant energy travels through the air at wavelengths. And only when this radiation hits other materials actually heats. The heat represented at this time is called radiant heat.

Relative emissivity is determined by comparing the standard sample of known emissivity with the material to be measured in a sealed space and applying the same temperature heat and measuring the temperature of the materials at a certain distance (over 30cm).

The basic law of this is Stefan-Boltzman's law, which relates to the heat flow (q) of the black body, an ideal radiator.

For example, if the emissivity E of the main paint with emissivity of 0.91 and the general water paint with emissivity of 0.80 is calculated at 25 ° C,

① When the paint of the present invention is ε = 0.91

E = 0.91 × 5.67 × 10 ^-8 W / (m ² ㆍ K ⁴ ) × {(25 + 273) K} ⁴

= 406.90 W / m ²

② For general water-based paint, when ε = 0.80

E = 0.80 × 5.67 × 10 ^-8 W / (m ² ㆍ K ⁴ ) × {(25 + 273) K} ⁴

= 357.72 W / m ²

The above calculation results show that the radiant paint absorption of radian paint per unit area (m ² ) is 406.09W and the general water paint absorption is 357.72W.

In general, the water-based paints and insulation to pass through the radiation energy to lose the radiant heat, but the paint of the present invention can absorb more than 40% of the radiation energy into the building to make the interior of the building even warmer in winter. In addition, in summer, when the paint enters the building from the outside, the heat passes through the building throughout the day to keep it warm until evening, and it continues until the outside air cools, but the paint according to the present invention prevents heat energy from entering the building. To keep the building cooler and save energy.

In order to obtain these effects, mineral additives that emit far-infrared rays can be used, and typically, ocher, elvan, macsumite, and jade having a thermal emissivity of 0.90 or more are used. In addition, since the yellow soil is yellow, in order to obtain a white water-based paint, it can be mixed and used except for colored inorganic materials such as ocher.

That is, the inorganic additive is economically readily available inorganic particles having emissivity of 0.90 or more is suitable for finely divided fine powder powder of pulverized ocher, elvan, maculite, jade at 250 ~ 380 mesh fired at a temperature of 1200 ℃ or more.

Looking at the mixed inorganic additives, ocher is a natural pigment with a cohesive nature, good absorbency, good dispersibility, and emissivity of 0.93 as a natural friendly article.

In addition, elvan is a kind of yellowish-white silicate mineral, which is called goose egg or agglomerated barley rice. It is also excellent in dispersibility and emissivity and has properties suitable for the present invention.

In addition, the macsumite is composed of components such as silica, alumina, ferrous oxide, ferric oxide, calcium, manganese, magnesium, and the surface is porous. In particular, it has excellent far-infrared radiation effect and its strength is higher than that of the existing machstone. When used in the coating composition as in the present invention, due to the characteristics of far-infrared radiation effect or porosity, the antibacterial, deodorant, dehumidification function is excellent, and during physiological radiation, the physiological activity of the cell is active and heat energy is generated to release harmful substances from the human body. It also has beneficial effects such as. In addition, since Macsumite has excellent whiteness, it has an advantage that it can be mainly applied in the manufacture of white paint or designed in various colors.

Finally, jade is generally a substance consisting of silica, magnesium oxide, ferric trioxide, calcium oxide, sodium oxide, water and the like. These materials emit a lot of far-infrared rays and have functions such as antibacterial, deodorization, and purification, and in particular, 6-15μm of far-infrared rays, similar to the wavelength of our body, are released to energize and activate the body and water molecules. When far-infrared rays are irradiated around 10μm, which is the wavelength band of, the water molecules are activated by resonance absorption, and the dissolved oxygen content of water increases, which has the effect of killing the bacteria living in the water. In addition, far-infrared rays have the function of neutralizing cationic substances which are the main causes of odors by anionizing air to remove air odor and odor.

As described above, the present invention uses the jade function, the non-toxic far-infrared radiant composite material, and the non-toxic inorganic antimicrobial agent in the coating to apply the coating to the interior of the building. It has the antibacterial and mildew resistance, and gives the function to suppress indoor environmental pollution.

On the other hand, anatase-type titanium dioxide, which is one of the mixtures, is one of the photocatalysts that has been in the spotlight in recent years, and is a material having an effect of decomposing and deodorizing pollution when light is emitted. Specifically, when light energy is applied to titanium dioxide, electrons in the valence band are excited as conduction bands to form holes in the valence band, and the excited electrons and the generated holes cause redox reactions, resulting in photocatalytic properties. do. The photocatalyst thus produced is a white pigment having a characteristic of having a strong decomposition force and a super hydrophilic characteristic according to the reaction of electrons and holes. Such titanium dioxide can obtain a superior photocatalytic effect by increasing the surface area by reducing the particle size to nano size.

The Cu-Mn-Co oxide, a fine powder functional pigment, is a recently developed deodorizing functional pigment (trade name: DAIPYROXIDE), which has a very large surface area and has a photodegradation function. Like an anatase type titanium dioxide, an odor like an ammonia compound It is a functional pigment proved to be effective in deodorization of. Therefore, when used in combination with titanium dioxide has the effect of increasing the deodorizing power by causing synergism with each other.

In addition, the alpha mesrin is a (1R) of alpha-cyano-3-phenoxybenzyl-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropane carboxylate which is a synthetic pyrethroid compound as an insect repellent. Cis) S and (1Scis) R refers to the non-enantiomer. If it contains less than 0.1 parts by weight, the insect repellent effect is lowered, and the effect as an insect repellent paint is insufficient. If it contains more than 3.0 parts by weight, the insect repellent material is not compatible with the existing paint, it will not be dispersed and agglomeration problem appears. do. Therefore, it is preferable to have a composition as described above.

Acrylic emulsion resin with EBS (Emulsified Binding System) technology is a new product recently developed by ELIOKEM, an emulsion resin with the basic chemical structure of Substituted-styrene acrylate copolymer. Because it is excellent and penetrates and adheres to porous materials such as cement mortar wall inside the building, it has excellent adhesion, and it has the function of pollution resistance, and also has good weather resistance, water resistance, chemical resistance, etc. A synergistic effect is achieved.

Thus, simply summarized the manufacturing method of the functional water-based paint of the present invention composed of the composition, water, inorganic additives, photocatalyst (titanium dioxide), Cu-Mn-Co oxide, inorganic viscosity modifier (sepiolite, as shown in FIG. Primary mixing step (S1) for mixing; The softening degree of the mixture was determined by Hegman No. Dispersing step (S2) to be dispersed in three or more; A secondary mixing step (S3) of mixing a Substituted-styrene acrylate copolymer emulsion resin, an insect repellent (alphamethrin), other additives (antifoaming agent, dispersant, etc.) of Eliochem; By stirring the secondary mixture is made of a stirring step (S4) so that each component is mixed uniformly.

Example 1

Manufacturing method of complex functional water-based paint yellow earth color

35 parts by weight of water, 25 parts by weight of an ocher mineral additive with an emissivity of 0.9 or more, crushed to about 320 mesh, 6 parts by weight of anatase type titanium dioxide (average of about 23 nm), 6 parts by weight of Cu-Mn-Co oxide, and sepiolite powder of inorganic viscosity 3 parts by weight of the mixture and the softening degree of Hegman No. After dispersing in 3 or more, 30 parts by weight of the Substituted-styrene acrylate copolymer emulsion resin of Eliochem Co., Ltd., 1.5 parts by weight of alpha-methrin repellent and 1.5 parts by weight of ordinary additives (antifoaming agent, dispersing agent, etc.) are mixed and stirred sufficiently. The composite functional aqueous paint of was prepared.

Example 2

Composite functional water paint white manufacturing method

35 parts by weight of water, 25 parts by weight of an jade inorganic additive having an emissivity of 0.9 or more, crushed to about 320 mesh, 6 parts by weight of anatase type titanium dioxide (average of about 23 nm), 6 parts by weight of Cu-Mn-Co oxide, and an inorganic viscosity modifier sepiolite 3 parts by weight of powder were mixed, and the softening degree was Hegman No. After dispersing in 3 or more, 30 parts by weight of the Substituted-styrene acrylate copolymer emulsion resin of Eliochem listed above, 1.5 parts by weight of alpha-methrin repellent, and 1.5 parts by weight of an ordinary additive (antifoaming agent, dispersant, etc.) are mixed and sufficiently stirred The composite functional aqueous paint of was prepared.

Experimental Example

In order to check the properties of the prepared paint, first prepare a specimen according to the method of producing a slab and tin plate (tin plate) (KS D3516) for the paint test of the KS standard, and polished evenly with 220 sheets of domestic abrasive paper. After washing with perchlorethylene which does not contain free chlorine or hydrochloric acid and dried with hot air, the surface is sanded to 600 times with water-repellent finish and the base coat is dried at room temperature. After coating using 5 to dry the coating film for 20 hours to prepare a specimen. The coating thus prepared was coated on the prepared coating material, and then dried at room temperature for 7 days and then subjected to physical property evaluation of the coating film by the following method. The results are shown in Tables 1, 2, and 3.

① The test result of the emissivity of the paint of this invention is as follows.

② Deodorization test

    ** Comparative Examples Specimens are coated with a conventional KS grade 2 internal water-based paint.

As shown in Table 2, the comparative example showed a slight deodorization rate of 9%, and the aqueous coatings of the present invention of Example 1 and Example 2 had a deodorization rate of 95%, indicating that the adsorption ability of harmful gases was excellent.

③ Promoting pollution

Accelerated contamination test was prepared by dispersing black carbon in mineral spirit at 20%, spraying on the specimen prepared in the same manner as in Experimental Example, and drying it for 80 hours at 80 ± 2 ℃. It was determined by the brightness index aberration before and after the water washing. At this time, the smaller the brightness index, the greater the pollution resistance.

④ Adhesion

 The adhesion test of the paint was carried out in 11 lines horizontally and vertically so that the gap was 1 mm in a crosswise shape on the dry coating of the specimen according to the cross-cut test of ISO 2409 and the cellophane on it. Adhesion tape was evaluated by attaching and detaching the adhesive tape and then numbering the remaining pieces of 100 pieces of separated coating on the coating film.

⑤ White flower

The chalking phenomenon is to wrap a black wool cloth with a finger according to Test Method A (cloth tape method) of ASTM D4214, and then rub it with a medium force on the specimen for 2 to 3 inches (50 to 70 mm). . Then, the stain of the coating film removed from the cloth by removing the cloth was compared with the photographic standard defined in ASTM D 659, and the no. 6, no.4 and no.2. At this time, the best whitening phenomenon is no.

⑥ Photodegradability

After coating the coated paint of the present invention having a photocatalyst function in a methylene blue (MB) 0.001M solution for 20 minutes, and drying the specimen to avoid direct sunlight, the photocatalytic properties were measured by the degradability of MB. The photocatalyst was characterized by using a photocatalytic potentiometer (Sinku-Riko Co., Ltd. PCC-1), which emits left infrared rays with a wavelength of 340 nm, and then, after 20 minutes with a photodetector, calculates the amount of MBdml decomposition of the surface of the coating film as shown in Equation 1 below. ΔABCfh was measured.

    T0 = Initial transmittance

    T1 = Momentary transmittance that changes over time

The test results of the accelerated weather resistance, adhesion, whitening and photodegradability of the functional aqueous paint of the present invention are shown in Table 3 below.

    *** Specimen of Comparative Example 1 is a coating of ordinary KS grade 2 water-based paint.

As shown in Table 3 above, the inventive composite functional water-based paints are better than ordinary water-based paints in accelerated fouling, photodegradability, adhesion, and whitening development experiments. It can be seen that all show excellent results.

In addition, the above-mentioned example is only an example to demonstrate this invention. Therefore, it is obvious that the ordinary skilled in the art to which the present invention pertains uses the partial change with reference to the detailed description.

As described above, the functional water-based coating composition of the present invention and its manufacturing method,

Energy conservation can be saved by maintaining the warmth of the building. Moisture and breathability are provided so that the indoor humidity can be controlled to maintain a comfortable residential environment. That is, it is possible to provide a paint that can add breathability and moisture retention by adding a material having high moisture retention and high thermal emissivity to the paint and using a special emulsion resin having moisture retention and breathability as the base coating resin.

In addition, the present invention by adding a photocatalyst and insect repellent further removes the harmful pollutants (e.g., formalin, organic solvent, etc.) harmful to the human body generated in new apartments, and various odors generated in the toilet kitchen, trash cans by photolysis, flies It is possible to provide useful products and manufacturing methods that are environmentally friendly to deodorize and purify harmful ingredients such as insects or mosquitoes, mosquitoes, cockroaches, ants, etc. It is.

Claims (4)

In the aqueous coating manufacturing method imparted functionality, 30 to 45 parts by weight of water; 5 to 25 parts by weight of an inorganic additive having an emissivity of 0.9 or more, pulverized to about 250 to 380 mesh; 3 to 10 parts by weight of anatase titanium dioxide having particles of 15 to 30 nm; 3 to 10 parts by weight of a Cu-Mn-Co oxide; A first mixing step (S1) of mixing 1 to 5 parts by weight of the sepiolite powder with an inorganic viscosity regulator; The softening degree of the primary mixture is Hegman No. Dispersing step (S2) to be dispersed in three or more; 20 to 35 parts by weight of the acrylic emulsion resin in the dispersed mixture; 0.1 to 3.0 parts by weight of an insect repellent alphamethrin; Secondary mixing step (S3) for mixing the antifoaming agent, 1-2 parts by weight as other additives; Method for producing a functional water-based paint, characterized in that consisting of; stirring step (S4) for stirring the secondary mixture. The method of claim 1, The inorganic additive is a functional water-based paint manufacturing method, characterized in that the mixture is used one or more from the group consisting of ocher, ganban stone, gansum stone, jade. 30 to 45 parts by weight of water by the manufacturing method of claim 1; 5 to 25 parts by weight of an inorganic additive having an emissivity of 0.9 or more that is pulverized to about 250 to 380 mesh; 3 to 10 parts by weight of anatase titanium dioxide having particles of 15 to 30 nm; 3 to 10 parts by weight of a Cu-Mn-Co oxide; Sepiolite powder 1 to 5 parts by weight of an inorganic viscosity modifier; 20 to 35 parts by weight of an acrylic emulsion resin; 0.1 to 3.0 parts by weight of an insect repellent alphamethrin; Functional water-based coating composition, characterized in that consisting of 1 to 2 parts by weight of the defoaming agent, dispersant as other additives. The method of claim 2, The inorganic additive is a functional aqueous coating composition, characterized in that one or more mixed use from the group consisting of ocher, elvan, gansumite, jade.

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