KR100840795B1 - A drawing material of using chalk - Google Patents

Abstract

A drawing material for an oil color, a pastel and a crayon is provided to recycle the waste chalk by using the waste chalk powder and to improve adhesive strength. A drawing material comprises 100 parts by weight of the waste chalk powder; 20-80 parts by weight of a natural oil; 0.01-10 parts by weight of a surfactant; 0.1-5 parts by weight of a bubble generation inhibitor; 5-40 parts by weight of a drying accelerator; and 1-10 parts by weight of a vegetable adhesive. Preferably the vegetable adhesive comprises the glue of Viburnum sargentii and a tung oil in a ratio of 1 : 1-4 by weight.

Description

A drawing material of using chalk

The present invention uses waste chalk to produce drawing materials of oil paintings, pastels and crayons.

Chalk is still the main textbook used for teaching and learning. Chalk consumed annually is estimated at W2.6bn in elementary and secondary schools nationwide, and 2005 chalk shipments are estimated at W3.8bn in accordance with the statistical information system. If you write about 30% of each piece of chalk, you will not be able to use it well because it is too small to write. You can count the amount of chalk shipped nationwide as the total consumption of chalk. Calculation shows that about 1.2 billion won per year disappear into waste chalk.

Chalk, also called chalk or chalk, is a writing utensil mainly used for blackboards and can be divided into calcined gypsum and calcium carbonate.

Calcined plaster chalk is produced as a large-scale evaporation deposit type with rock salt, etc., or it is heated for about several hours at about 120 ℃ to make gypsum, which is often found near volcanic branches or sulfur pores. An ideal liquid made by adding fresh water to calcined gypsum is solidified in a molding machine, cured, and dried. In Korea Patent Application No. 1994-0022246 as an example of such calcined plaster chalk, paraffin 3%, paraffin 3%, vinyl acetate 1%, methyl cellulose 2%, gelatin 0.8%, mail cement 1.2%, vinyl acetate resin It describes a method of producing chalk, characterized in that the preparation by mixing 2%.

Chalk made of calcium carbonate is made of calcium carbonate, the most common salt in nature, as a main raw material.In industrially, heavy calcium carbonate obtained by crushing limestone to be sieved and sieved or shredded with sticking agent etc. To prepare. As an example of such a calcium carbonate chalk, Korean Patent Application No. 2000-0012864 includes the steps of mixing calcium carbonate: 70 wt%, kaolinite: 25 wt%, bentonite: 5 wt%; Kneading the mixture at a ratio of 75 to 80wt%: 20 to 25wt% of water and extruding the dough using a mold to cut the dough into a predetermined size; The method for producing chalk is described, which comprises a step of drying the cut molded article in a furnace at 150 to 250 ° C. and cooling and packaging the molded article.

To make color chalk, add pigment to the ideal solution.

On the other hand, emulsion is a drawing material in which pigments are put in dry oil, a fixing agent, to dilute paints, and then painted by painting several times. The greatest advantage of oil paints is that they can express various aspects of nature slowly and precisely, and they can be expressed vividly with various techniques and textures. It is more durable than other paints, can be thickly coated, transparent overlapping effect can be arbitrarily controlled, and three-dimensional appearance can be well represented. On the other hand, it takes 3 to 7 days or more to dry the colored layer on the surface and has a disadvantage of requiring more than 6 months to completely dry the inside. This is because the dry oil of the emulsion dries while being oxidized through contact with air. A common feature of oil is that it does not evaporate like water. Oil absorbs oxygen in the air and solidifies and sticks through a steady oxidation process.

Pastel is a drawing material in which a light powdery material is elongated, and has been used as a raw material of gypsum or white clay, but now it is made of deoxidized lime filtered through water. Particles are fine and opaque. They are used as powders. Pastel also has a small amount of pressure-sensitive adhesive that can be painted over. Pastel gives a bright and light feeling to the surface of the painting, does not shine, and is most similar to the dried pigment in appearance. It doesn't crack like oily and doesn't brown or yellowish. Pastels have the disadvantage of being very sensitive from the outside because they don't attach completely to the base.

Crayon is a drawing material that is solidified by melting paraffin or wood wax mixed with pigments, and it became a drawing material that began to rely on nature as a model by the early 20th century. Widely used for student use. Later, a soft painting material called crapas with wax or palm oil mixed with pigments was made, which could be layered or cut, spreading for lower grades, focusing on the creation of beauty rather than painting. Crayons have a drawback that they tend to break as you draw because they don't color well on paper.

As mentioned above, it is a high economic loss that chalk, which is an important main textbook used for learning, is discarded as a waste chalk and is worth about 1.2 billion won a year. Accordingly, the present invention provides a drawing material such as emulsion, pastel and crayon using waste chalk, and thus has an object to realize more efficient resource recycling.

The present invention relates to a drawing material using waste chalk, and more specifically, to a waste powder, emulsified by mixing a natural oil, a surfactant, a bubble generating inhibitor, a drying accelerator, a vegetable adhesive, water, a fixing agent, a curing agent, a paraffin, and a wax. It relates to a drawing material used for uses, such as a dragon, a pastel dragon, and a crayon.

As the drawing material using the waste chalk according to the present invention, the waste chalk is used to grind a variety of waste chalk into waste chalk powder. The waste powder is pulverized into a powder having a particle diameter of 50 to 600 µm using a mixer and a ball mill. If the particle size of the waste powder is smaller than 50㎛, the particles are too small, so that the cohesion between the waste powder powder is strong, and the even distribution among the compositions is slightly inferior.If the particle size is more than 600㎛, the particle size of the waste powder powder is so large that the texture of the drawing material It is better to use a powder having a particle size of 50 to 600 µm since the surface of the work is rough after the use of the drawing material and the aesthetics are reduced, and the waste powder of the surface is visually confirmed.

The drawing material using the waste powder according to the present invention shows a color by mixing the waste powder of various colors by the color mixing method of 20 colors of white powder powder and Munsell. White chalk acts as an excellent white pigment by itself, so it is simply pulverized and used. The remaining colors are the three primary colors of red, yellow, and blue, and the combination of red, yellow, and purple Add the green, which is a mixture of blue, to make the five main colors. Adjacent colors from the five colors are mixed to make yellow red, greenish yellow, cyan, purple, and reddish purple to make 10 colors of red color and 10 colors of adjacent colors to make 20 color rings. The color of the drawing material using the waste chalk prepared by the color mixing method of Munsell 20 color ring as shown above is shown in FIG. According to this method, the most red-down color is 5R, the greenest color is 5G, and you can create complementary colors by mixing colors that face each other in the 20-color ring, or derived from a mixture of colors, such as by mixing one and warm colors. It is possible to produce a variety of colors that are difficult to see with eyes.

Drawing material using the waste powder according to the present invention is 20 to 80 parts by weight of natural oil, 0.01 to 10 parts by weight of surfactant, 0.1 to 5 parts by weight of the bubble suppressing agent, 5 to 40 parts by weight of drying accelerator based on 100 parts by weight of waste powder And 1 to 10 parts by weight of the vegetable pressure sensitive adhesive. The drawing material of the above composition is good to use for emulsification.

In the drawing material using waste chalk used for emulsification, the vegetable pressure-sensitive adhesive is used by mixing sugar grass and tung oil in a mixing ratio of 1: 1 to 4. Disadvantages of the drawing material for emulsification are that the drying is very slow and the material cracks when dried. Therefore, since the vegetable pressure-sensitive adhesive using a mixture of sugar grass and tung oil is used to increase the adhesion of the drawing material has the advantage of improving the adhesion of the drawing material, reducing the cracks.

Methanol grass is a viburnum sargentii, which is grassy, colorless, highly viscous, and bonds when dried to prevent cracking of the drawing material. Since the strength of the adhesive agent is strong enough to be used as a general binder, when used alone, the surface of the emulsion may be roughly dried.

Tung oil is oil woven from Paulownia fruit. It has high viscosity, quick drying, strong coating and elasticity. It has been used in Korea for many years as paint oil, kerosene, pest control, and diarrhea in Korea. .

The vegetable pressure-sensitive adhesive is used by mixing the mixture of sugar wood and tung oil in a mixing ratio of 1: 1 to 4, when the oil oil is less than the mixing ratio of 1: 1 for sugar wood grass is effective in lowering the crack of the emulsion, but the viscosity is too high When painting oil painting, it is not good because the touch of brush is uneven, and if oil oil is used more than 1: 4 mixture ratio of sugar paste, the adhesiveness of vegetable adhesive is lowered. It is good to mix and use.

In the drawing material using the waste powder used for the emulsification, the vegetable pressure sensitive adhesive may be used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the waste powder. When used in less than 1 part by weight based on 100 parts by weight of waste powder, the adhesive properties by the vegetable adhesive is poor, and when used in more than 10 parts by weight with respect to 100 parts by weight of waste powder, the adhesiveness is too high and the volume during drying of the emulsion Since the increase of less occurs the flexibility of the screen, it is preferable to use 1 to 10 parts by weight of the vegetable adhesive with respect to 100 parts by weight of the waste powder.

In the drawing material using the waste chalk used for the emulsification, natural oil is used as linseed oil, foreskin oil, walnut phosphorus oil, safflower oil, and sunflower oil or a mixture thereof. Natural oil is a dry oil for emulsification and is dried through oxidation without evaporation. Natural oils increase the vividness of color and vividness of colors, or the amount of natural oils increases, so that the particles of waste powder are spread more. Natural oil is fixed by absorbing oxygen in the air steadily, and as the volume becomes thicker, the screen becomes more flexible. When using white waste powder, use natural transparent oil such as foreskin oil to maintain the original color of white waste powder.

In the drawing material using the waste powder used for the emulsification, it is preferable to use 20 to 80 parts by weight of natural oil based on 100 parts by weight of the waste powder. If it is used at less than 20 parts by weight based on 100 parts by weight of waste powder, it cannot be used for emulsification because it is not enough natural oil, and when it is used at more than 80 parts by weight based on 100 parts by weight of waste powder, the drying time is delayed. As cracks become more severe, it is preferable to use 20 to 80 parts by weight of natural oil with respect to 100 parts by weight of waste powder.

A surfactant is used for even mixing of the waste powder powder with natural oil, and the surfactant is a sucrose fatty acid ester, a sorbitan fatty acid ester, a propylene glycol fatty acid ester, a glycerin fatty acid ester, a soybean phospholipid or a mixture thereof. The surfactant may increase the environmental friendliness of the waste powder by using a surfactant that is harmless to the human body without using the surfactant by chemical synthesis.

In the drawing material using waste powder used for emulsification, the surfactant may be used in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of waste powder. When used in an amount of 0.01 parts by weight or less with respect to 100 parts by weight of waste powder, the cohesiveness of the waste powder is not good. However, when used in an amount of 10 parts by weight or more based on 100 parts by weight of waste powder, the adhesiveness and sticking property are somewhat reduced by the surfactant. Since it falls, it is good to use 0.01-10 weight part surfactant with respect to 100 weight part of waste powder powders.

The mixing process of the waste powder, natural oil, vegetable pressure sensitive adhesive and surfactant is inevitably generated in the drawing material using the waste powder used for emulsification. Such bubbles are a gas generated from natural oil when the drawing material is dried. In addition, it creates pores in the layer on the surface and absorbs oxygen into the pores, causing continuous oxidation, but too many bubbles are a factor causing cracking. Therefore, a bubble generating inhibitor is used to generate effective pores, and the bubble generating inhibitor uses ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, nonanol and decanol, or a mixture thereof. It is preferable to use 0.1 to 5 parts by weight based on 100 parts by weight of the waste powder. If the amount is less than 0.1 part by weight based on 100 parts by weight of the waste powder, it is difficult to expect the effect of the anti-foaming agent. When it is used more than 5 parts by weight based on 100 parts by weight of the waste powder, it is possible to suppress the generation of pores so that Since the oxidation is not smooth and only the surface of the emulsion is dried, it is preferable to use 0.1 to 5 parts by weight of the bubble generation inhibitor with respect to 100 parts by weight of the waste powder.

The drawing material using waste chalk used for emulsification uses a drying accelerator to shorten the drying time, and the drying accelerator uses damar resin, sacchib, liquid styrit bar and riquin or a mixture thereof. When the drying accelerator is used, the drying speed is faster, but the color may be darkened, or it may be used in consideration of each characteristic because it has characteristics such as changing to green by working with iron. The drying accelerator is preferably used 5 to 40 parts by weight based on 100 parts by weight of waste powder. If it is used less than 5 parts by weight with respect to 100 parts by weight of waste powder, the drying speed is not good because it is somewhat inferior. If it is used more than 40 parts by weight with respect to 100 parts by weight of waste powder, the drawing material cracks after drying due to too fast drying Since this occurs, it is preferable to use 5 to 40 parts by weight of a drying accelerator based on 100 parts by weight of waste powder.

As another embodiment of the present invention, a drawing using waste chalk comprising 20 to 80 parts by weight of water, 5 to 20 parts by weight of fixing agent, 1 to 10 parts by weight of curing agent, and 1 to 10 parts by weight of vegetable adhesive based on 100 parts by weight of waste powder Provide the material. The drawing material using the waste chalk of the composition as described above may be used for pastels.

The drawing material using the waste chalk used for the pastel uses a vegetable adhesive to improve the adhesion of the pastel and the adhesion of the waste powder, and the vegetable adhesive is the same as that used for the drawing material using the waste chalk used for emulsification. Do.

The vegetable pressure-sensitive adhesive is preferably used 1 to 10 parts by weight based on 100 parts by weight of waste powder. When used at less than 1 part by weight based on 100 parts by weight of waste powder, the paste becomes easily broken due to low adhesion, and when used at 10 parts by weight or more with respect to 100 parts by weight of waste powder, the amount of pastels on the screen is increased due to the cohesiveness of the pastels. It is not good to get low. Therefore, it is preferable to use 1 to 10 parts by weight of the vegetable adhesive with respect to 100 parts by weight of the waste powder.

The drawing material using waste chalk used for pastel uses a fixing agent to improve the binding force of the waste powder, and the fixing agent is zeolite, bentonite, diatomaceous earth, talc, kaolin, mica, white earth, cellulose, feldspar and urea or these Use is selected from the mixture of. In particular, it is preferable to use bentonite having a high binding strength with the waste powder.

In the drawing material using the waste powder used for the pastel, the fixing agent is preferably used 5 to 20 parts by weight based on 100 parts by weight of the waste powder. If it is used less than 5 parts by weight based on 100 parts by weight of waste powder, the binding strength of the waste powder is not good because it is somewhat inferior. Since the amount of pastel becomes smaller and the color is somewhat halved, it is preferable to use 5 to 20 parts by weight of a fixing agent with respect to 100 parts by weight of the waste powder.

In the drawing material using waste chalk used for pastels, a hardening agent is used to quickly cure the drawing material for pastels, and the hardening agent includes inorganic chloride including potassium chloride, sodium chloride, calcium chloride, silicon chloride, cobalt chloride, undoped chloride and rubidium chloride. Water and granite rock powder or mixtures thereof are used.

The use of the curing agent is preferably used 1 to 10 parts by weight based on 100 parts by weight of waste powder. If it is used less than 1 part by weight with respect to 100 parts by weight of the waste powder, there is almost no change in the curing rate, and when it is used more than 10 parts by weight with respect to 100 parts by weight of the waste powder, the curing speed is improved, but the cohesiveness of the drawing material for pastels is improved. This is not good because the amount of drawing material for pastels falling off the screen increases, which may create drawing materials for pastels that do not stick to the screen. Therefore, it is preferable to use 1 to 10 parts by weight of the curing agent based on 100 parts by weight of the waste powder.

When mixing the waste powder, vegetable pressure-sensitive adhesive, fixing agent and curing agent, water is used, and the amount of water used is preferably 20 to 80 parts by weight based on 100 parts by weight of waste powder. If the amount is less than 20 parts by weight based on 100 parts by weight of the waste powder, the cohesive force of the drawing material for pastels is too low after drying so that the drawing material for pastels is easily broken, and 80 parts by weight of 100 parts by weight of the waste powder If it is more than the weight part, it is not good because there is a disadvantage in that the drying speed of the inner side is much different compared to the drying speed of the drawing material for pastels on the outer side, so that the overall drying time takes a lot.

As another embodiment of the present invention, a drawing using waste chalk containing 50 to 150 parts by weight of paraffin, 1 to 10 parts by weight of adhesive, 20 to 50 parts by weight of wax, and 1 to 10 parts by weight of vegetable adhesive, based on 100 parts by weight of waste powder Provide the material. The drawing material using the waste chalk of the composition described above may be used for crayons.

The drawing material using waste chalk used for crayons uses paraffin to increase the flexibility of the material, and the paraffin used is used in an amount of 50 to 150 parts by weight based on 100 parts by weight of waste powder. If the used paraffin is 50 parts by weight or less with respect to 100 parts by weight of the waste powder, the crayon drawing material increases the hardness, and if it is 150 parts by weight or more based on 100 parts by weight of the waste powder, the crayon drawing material is too soft. It is better to use 50 to 150 parts by weight with respect to 100 parts by weight of waste powder because it is slightly inferior to the shape maintenance.

In the drawing material using waste chalk used for crayons, the vegetable pressure sensitive adhesive uses the same vegetable pressure sensitive adhesive as the vegetable pressure sensitive adhesive used for the emulsification, and the amount used is 1 to 10 parts by weight based on 100 parts by weight of the waste powder. good. When used at less than 1 part by weight based on 100 parts by weight of waste powder, the viscosity of the crayon is low due to low adhesiveness, which is somewhat inferior to maintaining the shape of the crayon, and when used at 10 parts by weight or more with respect to 100 parts by weight of waste powder. The cohesiveness is high and the amount of crayons on the screen is low, which is not good. Therefore, it is preferable to use 1 to 10 parts by weight of the vegetable adhesive with respect to 100 parts by weight of the waste powder. The vegetable adhesive used is used in the ratio of 1: 1 and 4 of Methanol grass and tung oil.

Fixing agents in drawing materials using waste chalk used for crayons are those selected from zeolite, bentonite, diatomaceous earth, talc, kaolin, mica, white earth, cellulose, feldspar and urea or mixtures thereof. In particular, it is preferable to use bentonite having a high binding strength with the waste powder. The binder is used 1 to 10 parts by weight with respect to 100 parts by weight of the waste powder, but when used in less than 1 part by weight, the binding strength of the waste powder is worse, when used in more than 10 parts by weight is used together with the vegetable pressure-sensitive adhesive force is too Will increase.

In the drawing material using waste chalk used for crayons, wax is selected from talc wax, beeswax, carnauba wax, and canderia wax or mixtures thereof, and it is 20 to 50 based on 100 parts by weight of waste powder powder. Use parts by weight. If it is less than 20 weight part with respect to 100 weight part of waste powders, the touch feeling of a crayon will worsen, and if it is 50 weight part or more, the shape of a crayon will tend to fall a little.

The drawing material according to the present invention can recycle about 1.2 billion won of waste chalk per year, and can use a drawing material having a higher adhesive force.

Hereinafter, the present invention will be described in more detail with reference to Examples, Comparative Examples, and Experimental Examples, but the following Examples, Comparative Examples, and Experimental Examples do not limit the present invention.

Example 1

Into a 1 L beaker, 100 g of yellow waste powder (average particle size: 400 µm), 1 g of sugar grass, 2 g of petroleum oil, 25 g of linseed oil, 4 g of soybean phospholipid, 5 ml of ethanol, and 25 g of damar resin were mixed, and 200 rpm, 1 It stirred for the time and obtained the yellow waste powder powder drawing material for emulsification.

In the same manner and composition, red and blue emulsified waste powder drawing materials were obtained. The obtained red and yellow emulsified waste powder powder drawing material is mixed 1: 1 to obtain a mixed color of emulsified waste powder powder drawing material, and the yellow and blue waste powder powder drawing material is 1: 1. The mixture was mixed to obtain a green, emulsified waste powder powder drawing material. In the same manner, 20 color emulsified waste powder powder drawing materials were obtained in accordance with Munsell's color repayment method.

Example 2

50g of red waste powder and 50g of yellow waste powder are mixed to prepare 100g of purple waste powder, and 50g of yellow waste powder and 50g of blue waste powder to prepare 100g of green waste powder. It was. In the same manner as above, 100g of 20 waste powders were prepared according to Munsell's color repayment method.

100 g of the prepared waste powder was mixed with 5 g of bentonite and 10 g of sodium chloride, and then evenly mixed into a 1L beaker, followed by adding 60 g of water, 2 g of beech grass, and 6 g of petroleum oil, followed by mixing by stirring at 100 rpm for 1 hour. Thereafter, the mixture was molded by compressing the mixture into an acrylic mold made of a square bar. After drying the acrylic mold at room temperature for 72 hours to prevent sunlight, the acrylic powder was removed from the acrylic mold and the protruding portions of the fine powder were collected to obtain a waste powder drawing material for pastels.

Example 3

50g of red waste powder and 50g of yellow waste powder are mixed to prepare 100g of purple waste powder, and 50g of yellow waste powder and 50g of blue waste powder to prepare 100g of green waste powder. It was. In the same manner as above, 100g of 20 waste powders were prepared according to Munsell's color repayment method.

100 g of the prepared waste powder was mixed with 2.5 g of bentonite, and evenly mixed into 1 L beaker. Thereafter, 80 g of paraffin, 40 g of beeswax, 2 g of beech grass, and 6 g of tung oil were added to a separate beaker, and the mixture was heated and melted while stirring to 120 ° C. in an oil bath. The melt-mixed mixture was put into a mixture of waste powder and bentonite, and then mixed by stirring at 200 rpm for 30 minutes with a stirrer and then put into a cylindrical mold using a syringe to compression molding. Then, after 24 hours of natural drying in a sun-free place, the cylinder was pressed with a rubber cylinder and separated from the mold, and the protruding parts with fine sandpaper were used to obtain waste crayon powder drawing material.

[Comparative Examples 1-3]

Implemented in the same manner as in Examples 1 to 3, but without emulsifying grass and tung oil to emulsify waste powder powder drawing material (Comparative Example 1), pastel waste powder powder drawing material (Comparative Example 2), crayon waste A chalk powder drawing material (Comparative Example 3) was prepared.

Experimental Example 1

50 art majors are required to make works using each of the waste powder drawing materials and check the contents of the following items. Less than 17 checked numbers are not good (×) and 18 checked numbers. ~ 35 is normal (○), 36 or more checked number is shown as good (◎) are shown in Table 1 below.

TABLE 1 Characterization of Waste Powder Drawing Materials

1 is a 20-color redemption of Munsell using an emulsified waste powder drawing material.

Figure 2 is a work using the emulsified waste powder powder drawing material.

3 is a work using a waste powder powder drawing material for pastels.

4 is a work using the crayon waste powder powder drawing material.

Claims (19)

20 to 80 parts by weight of natural oil, 0.01 to 10 parts by weight of surfactant, 0.1 to 5 parts by weight of foam generation inhibitor, 5 to 40 parts by weight of drying accelerator, and 1 to 10 parts by weight of vegetable adhesive Drawing material using the waste chalk, characterized in that. The method of claim 1, The vegetable pressure-sensitive adhesive drawing material using the waste chalk, characterized in that the mixture of sugar grass and tung oil in a weight ratio of 1: 1 to 4. The method of claim 1, The natural oil is a drawing material using waste chalk, characterized in that the linseed oil, foreskin oil, walnut phosphorus oil, safflower oil, and sunflower oil or a mixture thereof. The method of claim 1, Said surfactant is selected from the group consisting of sucrose fatty acid esters, sorbitan fatty acid esters, propylene glycol fatty acid esters, glycerin fatty acid esters, soy phospholipids or mixtures thereof. The method of claim 1, The foam generation inhibitor is a drawing material using waste chalk, characterized in that selected from ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, nonanol and decanol or a mixture thereof. The method of claim 1, The drying accelerator is a drawing material using the waste chalk, characterized in that selected from the Damar resin, Sikkhachib, liquid styribar, and lyquine or mixtures thereof. The method according to any one of claims 1 to 6, The drawing material using the waste chalk is a drawing material using waste chalk, characterized in that it is used for emulsification. A drawing material using waste chalk, comprising 20 to 80 parts by weight of water, 5 to 20 parts by weight of fixing agent, 1 to 10 parts by weight of hardener, and 1 to 10 parts by weight of vegetable adhesive, based on 100 parts by weight of waste powder. delete The method of claim 8, The fixing agent is selected from zeolite, bentonite, diatomaceous earth, talc, kaolin, mica, clay, cellulose, feldspar and urea or a mixture thereof. The method of claim 8, The hardening agent is a drawing material using waste chalk, characterized in that selected from potassium chloride, sodium chloride, calcium chloride, silicon chloride, cobalt chloride, canceled chloride, inorganic chlorides including rubidium chloride, and granite rock powder or mixtures thereof. The method according to any one of claims 8, 10 and 11, The drawing material using the waste chalk is a drawing material using the waste chalk, characterized in that used for pastels. A drawing material using waste chalk, comprising 50 to 150 parts by weight of paraffin, 1 to 10 parts by weight of a binder, 20 to 50 parts by weight of wax, and 1 to 10 parts by weight of vegetable adhesive, based on 100 parts by weight of waste powder. The method of claim 13, The vegetable pressure-sensitive adhesive drawing material using the waste chalk, characterized in that the mixture of sugar grass and tung oil in a weight ratio of 1: 1 to 4. The method of claim 13, The fixing agent is selected from zeolite, bentonite, diatomaceous earth, talc, kaolin, mica, white earth, cellulose, and feldspar or mixtures thereof. The method of claim 13, The wax is a drawing material using waste chalk, characterized in that selected from talc wax, beeswax, carnauba wax, and canderia wax or mixtures thereof. The method according to any one of claims 13 to 16, The drawing material using the waste chalk is a drawing material using the waste chalk, characterized in that used for crayons. The method according to any one of claims 1, 8 and 13, The waste powder is a drawing material using the waste powder, characterized in that the powder having a particle size of 50 to 600㎛ using a mixer and a ball mill. The method of claim 18, The waste powder is a drawing material using the waste powder, characterized in that the mixing of the white powder and the powder of the waste powder by the color mixing method of 20 colors of Munsell.

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