KR100577217B1 - Charcoal paints and their manufacturing methods - Google Patents

Abstract

The present invention relates to an environmentally friendly charcoal paint composition and a method for producing the same. The composition is prepared by adding a cryoprotectant, a dispersant, a defoaming agent, and a pH adjuster to an acrylic resin emulsion, adding water as a balance component, and then adding a thickener, It is obtained by adding chaff charcoal obtained by heat treatment.

The charcoal paint of the present invention uses charcoal as a paint material, and in particular, by using chaff charcoal and appropriately blending predetermined components therein, the chaff that is generated after rice harvesting can be recycled, and the obtained product is toxic It is an environmentally friendly new material paint that minimizes the emission of harmful environmental substances and cleans harmful gases.

Charcoal paint, composition, manufacturing method, chaff, environment, paint

Description

[0001] CHARCOAL PAINTS AND THEIR MANUFACTURING METHODS [0002]

The present invention relates to a charcoal paint composition and a method for producing the same, and relates to a charcoal paint composition and a method for producing the same, which comprises adding an antifreezing agent, a dispersant, a defoaming agent and a pH adjusting agent to an acrylic resin emulsion, adding water as a balance component, It is obtained by adding chaff charcoal.

The charcoal paint of the present invention uses charcoal as a paint material, and in particular, by using chaff charcoal and appropriately blending predetermined components therein, the chaff that is generated after rice harvesting can be recycled, and the obtained product is toxic It is an environmentally friendly new material paint that minimizes the emission of harmful environmental substances and cleans harmful gases.

As the overall industry develops and the living environment of humans becomes more abundant, efforts to pursue a cleaner environment are underway in various fields.

In this way, efforts to create a more comfortable environment than the existing environment and conditions have existed for a long time, but they are accelerating with the economic development that is rapidly reversing.

For example, formaldehyde and various air pollutants such as volatile organic compounds (VOCs), nitrogen compounds (NOx), and carbon monoxide from benzene, toluene, etc. are emitted from various odors or fine dusts generated in the room, , And significant progress has been made in completely eliminating these and reducing the concentration thereof.

Especially in recent years, there has been a shift to improving the daily living environment so that there is a new word of sick house syndrome. The main target is formaldehyde or volatile organic compounds.

As a material for reducing formaldehyde or volatile organic compounds that are found to be harmful to human bodies, a porous adsorbent such as a titanium dioxide photocatalyst or charcoal is widely used, and various functional paints using charcoal are also appearing.

Korean Unexamined Patent Publication No. 2002-79314 (published Oct. 19, 2002) discloses a paint applicable to interior and interior materials of concrete constructions, comprising a mixture of 350 ± 50 mesh charcoal powder and an aqueous binder at 20 ± 5: 80 ± 5 Mixed structure is disclosed.

The charcoal paint is intended to block insecticidal and sterilizing action due to the generation of far infrared rays and anions, as well as electromagnetic waves generated from waves or electronic products which are harmful to the human body,

However, the above-mentioned charcoal paint is costly because it uses charcoal as a charcoal to be used, and in order to produce charcoal, it is required to damage the forest, so that the problem of environmental destruction arises. In addition to this, there is a problem that a composition composed only of charcoal, binder, preservative and antimicrobial agent The product stability is poor, the coating surface is uneven, and the charcoal powder comes off from the coating surface, which is not suitable for interior painting or interior materials due to poor quality of the coating.

In addition, Korean Patent Application Publication No. 2003-39622 (published on May 22, 2003) discloses a method in which electromagnetic waves are cut off and applied in a simple manner in the subway, office, factory, hospital, A possible charcoal paint composition is disclosed.

The composition is a mixture of charcoal, ceramics, zeolite, and yellow clay with an aqueous adhesive. In addition to charcoal, yellow soil or ceramics may be mixed to increase the amount of far-infrared rays or anions to increase the volume of the floor. It has a problem of price and environment destruction because it uses.

Therefore, the present invention has been made in view of the above-described problems of the prior art. In the present invention, chaff charcoal generated after harvesting rice is used as charcoal and appropriate components are appropriately mixed therein, Is to provide a charcoal paint composition as an environmentally friendly new material paint, such as minimizing the emission of toxic harmful environmental substances and purifying gases harmful to the human body, and a manufacturing method thereof.

Hereinafter, the configuration of the present invention will be described.

The charcoal paint of the present invention is characterized in that charcoal is used as a paint material, and in particular, chaff charcoal obtained by heat-treating the chaff is suitably mixed with predetermined components.

That is, in the present invention, 0.1 to 1 part by weight of a cryoprotectant, 0.05 to 0.5 parts by weight of a dispersing agent, 0.1 to 1 part by weight of a defoaming agent and 0.01 to 0.2 parts by weight of a pH adjusting agent are added to 10-30 parts by weight of an acrylic resin emulsion, And 0.1 to 1 part by weight of a thickening agent, 0.1 to 1 part by weight of a thickening aid, 0.01 to 0.5 part by weight of a preservative and 5 to 50 parts by weight of a chaff charcoal.

It is still another object of the present invention to provide a charcoal paint composition obtained by the method for producing the charcoal paint composition.

The above-mentioned chaff char is a char obtained by heat-treating rice hull which is a bark of rice, in which more than 80% of the carbon component is carbonized, and many fine pores are formed between the remaining solid components.

Chunk of charcoal is distinguished from the state where the chunk of rice is completely burned. It is easy to break because it is thin in shape. Once broken pieces are hard like charcoal (charcoal).

The chemical properties of the rice hulls and the components of the charcoal after carbonization are shown in Tables 1 and 2 below.

[Chemical characteristics of rice hull] (unit%) pH moisture Organic matter carbon nitrogen Phosphate Potassium oxide Calcium oxide 6.2 10.4 84.1 47.9 0.43 0.06 0.34 0.07

[Main ingredient contained in the chaff charcoal (1kg of chaff charcoal)] chief ingredient(%) Sub ingredient / trace amount (mg) Silicon oxide (SiO ₂ ) 50.36 Carbon 40.49 Hydrogen 1.04 Nitrogen 0.42 Water 1.7 times 45.9 Calcium 5,700 potassium 11,000 manganese 790 iron 190 zinc 110 copper trace amount cadmium trace

Table 3 shows the contrast of each component of the chaff charcoal and the general charcoal.

 division Component content (%) Muzzle Chaff charcoal 1.77 45.9 (SiO ₂ ) Iron (Fe ₂ O ₃ ) Aluminum (Al ₂ O ₃ ) Titanium (TiO ₂ ) Molybdenum Calcium Magnesium (MgO) Potassium (K ₂ O) Phosphoric acid (P ₂ O ₅ ) 0.90 1.76 0.23 0.23 0.23 45.62 5.01 16.29 2.60 27.13 91.7 0.31 0.20 0.01 0.43 1.05 0.57 2.95 1.35 1.43 Source of data Forestry Experiment Station, Japan (1958) Korea Institute of Chemical Testing (2001)

As shown in the above table, the chaff charcoal is similar to charcoal but shows a totally different physical property as a whole.

The chaff charcoal has been widely used for agricultural purposes because it is easy to purchase raw materials and has little harm to environment damage and its shape is particulate. Recently, since mass production is possible by mechanization of production facility, it is used in the form of fuel or compost It is a resource that is widely used for industrial, living, and construction materials.

In the present invention, the above-mentioned chaff charcoal is used as a main raw material, and predetermined components are suitably compounded therein.

If the content of the chaff char is less than 5 parts by weight, it is not meaningful to add. On the other hand, if the content exceeds 50 parts by weight, the other components are reduced by the amount so that the product is difficult to be molded. .

The acrylic resin emulsion used in the present invention is an aqueous acrylic emulsion polymer having an acrylate copolymer content of 40-50 wt% and an unreacted monomer content of 0.03 wt% or less. When the content of the acrylic emulsion polymer is less than 10 parts by weight, When the amount exceeds 30 parts by weight, only the cost is added, and the addition is not meaningful.

The cryoprotectant is added to improve the weatherability of the product. The content of the cryoprotectant is preferably 0.1 to 1 part by weight. If the cryoprotectant is out of this range, the cryoprotectant may not exhibit its performance in a cold season.

The dispersant is preferably effective to maintain the slurry viscosity when dispersed in the inorganic pigment and very stable to the temperature. The dispersant is preferably an aqueous solution of an anionic surfactant of polycarboxylic acid type, preferably 0.05-0.5 parts by weight, If it is out of the range, the dispersing power is insufficient and mixing of the composition becomes difficult, which is not preferable.

The antifoaming agent can be used as a liquid antifoaming agent, and can be used in general mineral oil defoaming agents widely used for synthetic latexes, emulsion-based paints, adhesives, architectural putties, etc. Its role is to remove the air bubbles during the mixing reaction of the composition If the amount of the component or the amount of the additive is less than 0.1 part by weight, the effect of addition is small, and the effect is not good. On the contrary, even if the amount exceeds 1 part by weight,

The pH adjusting agent may be various conventional ones, but preferably propanol-based, and the amount thereof is preferably 0.01 to 0.2 parts by weight, and the thickening agent for viscosity enhancement is preferably a modified polyacrylic acid emulsion, and the amount thereof is 0.1 to 1 part by weight It is suitable.

As the thickening assistant for assisting the role of the thickening agent, alkylcellulose series is preferable and the amount thereof is preferably 0.1-1 parts by weight, and the preservative is a general preservative such as isothiazoline series, and its content is suitably 0.01-0.5 parts by weight.

On the other hand, there is no particular order in the order of injection of the components except for the fact that the chaff charcoal is put in the last stage of the characteristics of the product. However, in the case of the thickener and the thickening assistant, It is better to put it at the end if possible.

Hereinafter, the present invention will be described in more detail with reference to Examples.

≪ Example 1 >

10 Kg of an aqueous acrylic emulsion polymer (CAS No. 141-32-2, 80-62-6) as a binder was placed in a reaction vessel equipped with a stirrer, and 0.1 Kg of ethylene glycol as a cryoprotectant, 0.1 g of sodium polycarboxylate Amino-2-methyl-1-propanol solution (trade name: AMP-95, USA ANGUS (trade name) manufactured by NIPPON KOGYO CO., LTD.) As a pH adjuster, 0.05 Kg of a mineral antifoaming agent Ltd.) and 30 kg of water, and then the stirring is continued.

The reaction proceeded without any difficulties and there was no change in temperature or pressure. The pH was maintained at 7-9 with 2-amino-2-methyl-1-propanol solution, And there was almost no smell.

Subsequently, 0.1 kg of denatured polyacrylic acid emulsion (solid content 30%) as thickening agent, 0.1 kg of hydroxypropyl methylcellulose powder as thickening aid, 0.01 kg of isothiazoline preservative (trade name SN-135-S, , And 5 kg of chaff charcoal powder were further added and stirred at room temperature for 30 minutes to obtain a desired coating composition in paste form.

≪ Example 2 >

20 Kg of an aqueous acrylic emulsion polymer (CAS No. 141-32-2, 80-62-6) as a binder was placed in a reaction vessel equipped with a stirrer, and 0.55 Kg of ethylene glycol as a cryoprotectant, 0.5 g of polycarboxylic acid sodium salt Amino-2-methyl-1-propanol solution (product name: AMP-95, USA ANGUS (trade name) manufactured by Nippon Kayaku Co., Ltd.) as a pH adjuster, 0.27 Kg of a mineral antifoaming agent Ltd.) and 55 kg of water, and then the stirring is continued.

The reaction proceeded without any difficulties and there was no change in temperature or pressure. The pH was maintained at 7-9 with 2-amino-2-methyl-1-propanol solution, And there was almost no smell.

Subsequently, 0.6 kg of a denatured polyacrylic acid emulsion (solid content 30%) as a thickening agent, 0.6 kg of hydroxypropyl methylcellulose powder as a thickening assistant, 0.2 kg of an isothiazoline preservative (trade name SN-135-S, , And 27 kg of pulverized charcoal powder were added and stirring was continued at room temperature for 30 minutes to obtain a desired coating composition in paste form.

≪ Example 3 >

24 Kg of an aqueous acrylic emulsion polymer (CAS No. 141-32-2, 80-62-6) as a binder was placed in a reaction vessel equipped with a stirrer, and 0.6 kg of ethylene glycol as a cryoprotectant and a polycarboxylic acid sodium salt Amino-2-methyl-1-propanol solution (trade name: AMP-95, manufactured by Nogyo Chemical Co., Ltd., USA) as a pH adjuster, 0.3 kg of a mineral antifoaming agent (solid content: 42% Ltd.) and 70 kg of water, and then the stirring is continued.

The reaction proceeded without any difficulties and there was no change in temperature or pressure. The pH was maintained at 7-9 with 2-amino-2-methyl-1-propanol solution, And there was almost no smell.

Subsequently, 0.6 kg of a modified polyacrylic acid emulsion (solid content 30%) as a thickening agent, 0.4 kg of hydroxypropylmethyl cellulose powder as a thickening assistant, 0.2 kg of an isothiazoline preservative (trade name SN-135-S, And 45 kg of chaff charcoal powder were further added and stirred at room temperature for 30 minutes to obtain a desired coating composition in paste form.

<Example 4>

30 Kg of an aqueous acrylic emulsion polymer (CAS No. 141-32-2, 80-62-6) as a binder was placed in a reaction vessel equipped with a stirrer, and 1 kg of ethylene glycol as a cryoprotectant and 1 kg of sodium polycarboxylate Amino-2-methyl-1-propanol solution (trade name: AMP-95, manufactured by ANGUS, USA) as a pH adjuster ) And 85 kg of water, and then the stirring is continued.

The reaction proceeded without any difficulties and there was no change in temperature or pressure. The pH was maintained at 7-9 with 2-amino-2-methyl-1-propanol solution, And there was almost no smell.

Subsequently, 1 kg of denatured polyacrylic acid emulsion (solid content 30%) as a thickening agent, 1 kg of hydroxypropyl methylcellulose powder as a thickening aid, 0.5 kg of an isothiazoline preservative (trade name SN-135-S, manufactured by Nopco Co., Ltd.) 50 kg of powdery chalk charcoal was added and stirring was continued at room temperature for 30 minutes to obtain a desired coating composition in paste form.

The coating composition of the present invention according to the present invention can be applied as a paint for undercoat of a wall, a bottom surface or an architectural interior material, and finished with a pasteboard, wallpaper, finish or finish, .

1) It is environmentally friendly.

The charcoal paint using the chaff charcoal of the present invention is an environmentally friendly product since only water-soluble and harmless components are used.

2) Excellent deodorizing power.

The charcoal of rice hull is very well developed in porosity compared to general charcoal, and has excellent deodorizing power.

3) Excellent antimicrobial activity.

Charcoal disinfects harmful bacteria in the human body and suppresses its occurrence.

4) Excellent warmth.

The charcoal emits far-infrared rays, and because of the number of micro-pores, it has higher thermal insulation than any building material, and therefore it has excellent fuel saving effect.

5) Excellent humidity control function.

It absorbs the moisture inside the cement and discharges it to the outside, thereby maintaining the strength of the structure and extending the service life.

6) A large amount of negative ions are generated.

Charcoal is known to emit a large amount of anions almost permanently so that it is itself an anion mass.

7) It has good adhesive force and excellent washing resistance, so it can not easily peel off.

8) Formaldehyde and volatile organic compounds can be reduced.

As described above, the charcoal paint using the chaff charcoal of the present invention was developed on the basis of porosity characterizing charcoal, and not only sucks and purifies various harmful gases generated by building materials, but also continuously emits a large quantity of anions, It is also an advantage of being able to recycle the rice husk which is generally used as fuel or compost, as an environmentally friendly and human-friendly paint that promotes a pleasant environment and radiates far-infrared rays to enhance the warming effect.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, chaff charcoal generated after harvesting rice is used as charcoal and appropriate components are appropriately mixed therein to recycle the chaff, and the obtained product is also used as a harmful environmental substance It is expected to be used and applied to related fields as environmentally friendly new material paint which can minimize discharge and purify harmful gas to the human body.

Claims (2)

0.1 to 1 part by weight of a cryoprotectant, 0.05 to 0.5 part by weight of a dispersing agent, 0.1 to 1 part by weight of an antifoaming agent and 0.01 to 0.2 parts by weight of a pH adjusting agent are added to 10 to 30 parts by weight of an acrylic resin emulsion and 30 to 85 parts by weight of water as a balance component 0.1 to 1 part by weight of a thickener, 0.1 to 1 part by weight of a thickening aid, 0.01 to 0.5 part by weight of a preservative and 5 to 50 parts by weight of a chaff charcoal. The charcoal paint composition obtained by the method of claim 1