KR20100137776A - Polymer clay having excellent elasticity property and manufacturing method thereof - Google Patents

Abstract

PURPOSE: Polymer clay is provided to maintain elasticity because proper moisture is kept after drying and to prevent the hardening when moving for a long time. CONSTITUTION: Polymer clay comprises: 100 parts by weight of a base material selected from the group consisting of polyvinyl alcohol solution and polyvinyl pyrrolidone solution; 1~20 parts by weight of at least one moisturizer selected from the group consisting of glycerine and propylene glycol; 0.1~5 parts by weight of boric acid; 1~8 parts by weight of microsphere; and 1~20 parts by weight of calcium chloride.

Description

Artificial clay having excellent elastic properties and manufacturing method thereof

The present invention relates to an artificial clay (polymer clay) excellent in elastic properties and a method for manufacturing the same.

The present invention is a group of glycerin and propylene glycol with respect to 100 parts by weight of at least one base material selected from the group of polyvinylalcohol (PVA) solution and polyvinyl pyrrolidone solution. Excellent elastic properties including 1 to 20 parts by weight of any one or more moisturizers selected from 1 to 5 parts by weight of boric acid, 1 to 8 parts by weight of microspheres, and 1 to 20 parts by weight of calcium chloride (CaCl ₂ ) It is about artificial clay.

In addition, the present invention is 1 to 20 parts by weight of any one or more moisturizing agents selected from the group of glycerin, propylene glycol, boric acid with respect to 100 parts by weight of any one or more base materials selected from the group of polyvinyl alcohol solution, polyvinylpyrrolidone solution Mixing 0.1 to 5 parts by weight, 1 to 8 parts by weight of microspheres, and 1 to 20 parts by weight of calcium chloride to obtain a mixture; And it relates to a method of producing artificial clay excellent in elastic properties comprising the step of stirring the mixture at 500 to 2000rpm for 30 to 60 minutes at 40 to 90 ℃.

Artificial clay, as the term suggests, is artificially made clay and is used for roads, building materials, etc. Recently, children's learning materials have been used a lot by using soft characteristics.

Early clays consist of inorganic substances and water obtained from nature, and the clay itself is heavy, and since moisture disappears quickly, it is necessary to make a desired sculpture in a short time. After the completion is not reused again, there is a problem that the cracks on the surface of the sculpture cracks and breaks easily.

In order to solve this problem, instead of inorganic substances obtained from nature, water-soluble polymers are used as main materials, and artificial clays are made by using various additives to maintain the same level as conventional clays from such water-soluble polymers.

Such artificial clay can solve some of the problems of clay, which is the main material of the above-mentioned inorganic materials, but in view of the fact that artificial clay is currently used in children's learning materials, it can be used for children. It is true that there are many shortages in the artificial clay.

In particular, since children spend more time expressing something using artificial clay than adults, they should contain sufficient moisture compared to conventional clay, and also maintain the unique elastic properties of clay.

In particular, since the artificial clay contains various additives to give various properties necessary for the clay, there is a problem that the production cost increases when manufacturing the artificial clay.

In order to solve the above-mentioned problems, the present invention manufactures artificial clay with various components and compositions, and retains elasticity even after the work is dried. It is to provide an artificial clay and a manufacturing method thereof having the effect of prolonging the service life of the artificial clay can be prevented even when moving.

An object of the present invention is to provide an artificial clay excellent in elastic properties and a manufacturing method thereof.

The present invention is a group of glycerin and propylene glycol with respect to 100 parts by weight of at least one base material selected from the group of polyvinylalcohol (PVA) solution and polyvinyl pyrrolidone solution. Excellent elastic properties including 1 to 20 parts by weight of any one or more moisturizers selected from 1 to 5 parts by weight of boric acid, 1 to 8 parts by weight of microspheres, and 1 to 20 parts by weight of calcium chloride (CaCl ₂ ) To provide artificial clay.

In addition, the present invention is 1 to 20 parts by weight of any one or more moisturizing agents selected from the group of glycerin, propylene glycol, boric acid with respect to 100 parts by weight of any one or more base materials selected from the group of polyvinyl alcohol solution, polyvinylpyrrolidone solution Mixing 0.1 to 5 parts by weight, 1 to 8 parts by weight of microspheres, and 1 to 20 parts by weight of calcium chloride to obtain a mixture; And to provide a method of producing artificial clay excellent in elastic properties comprising the step of stirring the mixture at 500 to 2000rpm for 30 to 60 minutes at 40 to 90 ℃.

The artificial clay manufactured by the present invention retains the proper moisture and maintains its elasticity even after the work is dried, so it is not only excellent in elastic properties, but also prevents the artificial clay from hardening during prolonged movement. It also has the effect of extending its life.

The present invention shows an artificial clay excellent in elastic properties.

The present invention is a group of glycerin and propylene glycol with respect to 100 parts by weight of at least one base material selected from the group of polyvinylalcohol (PVA) solution and polyvinylpyrrolidone solution. Excellent elastic properties including 1 to 20 parts by weight of any one or more moisturizers selected from 1 to 5 parts by weight of boric acid, 1 to 8 parts by weight of microspheres, and 1 to 20 parts by weight of calcium chloride (CaCl ₂ ) Represents artificial clay.

At least one component selected from the group of polyvinyl alcohol solution and polyvinylpyrrolidone solution in the artificial clay of the present invention serves as a base material as a main component.

As the polyvinyl alcohol solution as a base material in the artificial clay of the present invention, a 1 to 40% polyvinyl alcohol solution obtained by dissolving polyvinyl alcohol in water can be used.

The polyvinylpinolidon solution which is the base material in the artificial clay of the present invention may use a polyvinylpinolidon solution obtained by dissolving polyvinylpinolidon in water.

Glycerin and / or propylene glycol in the artificial clay of the present invention can act as a moisturizing agent and can control the pot life of the artificial clay.

When the mixture of glycerin and propylene glycol is used as a moisturizer in the artificial clay of the present invention, a mixture of glycerin: propylene glycol in a weight ratio of 1 to 3: 6 to 9, preferably 1: 6 may be used.

Moisturizer in the artificial clay of the present invention has a disadvantage that the pot life of the artificial clay can be shortened when used less than 1 part by weight based on 100 parts by weight of the base material, and when using more than 20 parts by weight of artificial clay and sticky Sculptures made of clay may cause problems. Therefore, the moisturizing agent in the artificial clay of the present invention is preferably used 1 to 20 parts by weight based on 100 parts by weight of the base material.

Boric acid in the artificial clay of the present invention serves as a crosslinking agent to crosslink the base material component.

In the artificial clay of the present invention, when boric acid is used less than 0.1 parts by weight with respect to 100 parts by weight of the base material, the artificial clay is more likely to get on the hands. May occur. Therefore, boric acid in the artificial clay of the present invention is preferably used 0.1 to 5 parts by weight based on 100 parts by weight of the base material.

Microspheres in the artificial clay of the present invention serves as a filler (filler), to have the shape of the artificial clay and to contribute to the weight reduction characteristics of the artificial clay.

In the artificial clay of the present invention, when the microsphere is less than 1 part by weight with respect to 100 parts by weight of the base material, if the weight reduction characteristics of the artificial clay cannot be utilized, the use of more than 8 parts by weight causes the clay to become coarse and the adhesion decreases. Can be. Therefore, the microspheres in the artificial clay of the present invention is preferably used 1 to 8 parts by weight based on 100 parts by weight of the base material.

In the above, the microspheres are preferably used in powder form.

In the artificial clay of the present invention, calcium chloride plays a role of imparting elasticity of the artificial clay, and more specifically, the artificial clay maintains elasticity even after complete drying and maintains the characteristics of lightening the artificial clay.

Since various amounts of calcium chloride are applied to the artificial clay of the present invention, for the role of calcium chloride mentioned above in the artificial clay of the present invention, it is preferable to use 1 to 20 parts by weight based on 100 parts by weight of the base material.

The artificial clay of the present invention may further comprise a pigment to exhibit a variety of colors.

The artificial clay of the present invention may further include a pigment in addition to the above-mentioned components as one of the components in order to represent the color of the artificial clay, wherein the pigment is red with respect to 100 parts by weight of the base material 0.5 to 5 parts by weight of any one or more pigments selected from the group of pigments, blue pigments, yellow pigments, green pigments, and black pigments may be further included.

If the pigment is used in less than 0.5 parts by weight based on 100 parts by weight of the base material, there is a slight effect on the color development of artificial clay, and when used in excess of 5 parts by weight only increase the production cost without a noticeable effect on the color development May occur. Therefore, the pigment in the artificial clay of the present invention is preferably used 0.5 to 5 parts by weight based on 100 parts by weight of the base material.

The present invention shows a method for producing artificial clay excellent in elastic properties.

The present invention is 1 to 20 parts by weight of any one or more moisturizers selected from the group of glycerin, propylene glycol, 0.1 to 5 parts by weight of boric acid based on 100 parts by weight of at least one base material selected from the group of polyvinyl alcohol solution, polyvinylpyrrolidone solution 1 part by weight, 1 to 8 parts by weight of microspheres and 1 to 20 parts by weight of calcium chloride, to obtain a mixture; And a method of preparing artificial clay having excellent elastic properties, including stirring the mixture at 500 to 2000 rpm for 30 to 60 minutes at 40 to 90 ° C.

When preparing the artificial clay of the present invention, the mixture of the base material, the humectant, the boric acid, the microspheres, and the calcium chloride was stirred under various conditions. It is preferable that the mixture which mixed microspheres and calcium chloride is stirred at 40-90 degreeC at 500-2000 rpm for 30-60 minutes.

When preparing the artificial clay of the present invention may further comprise the step of carrying out the ultrasonic treatment process, low frequency treatment process when mixing the base material, humectant, boric acid, microspheres, calcium chloride.

The ultrasonic wave treatment process may be performed for 30 minutes or more under ultrasonic treatment of 20 kHz or more.

The ultrasonic treatment process may be performed for 30 to 60 minutes under 20kHz to 100kHz ultrasonic treatment.

The ultrasonic treatment process may be performed for 35 minutes to 55 minutes under ultrasonic treatment of 30kHz to 90kHz.

The sonication process may be performed for 40 to 50 minutes under 50 kHz to 70 kHz sonication.

The ultrasonic treatment process may be performed for 45 minutes under 60kHz ultrasonic treatment.

The low frequency treatment process may be performed for 30 minutes or more at a low frequency of 10 kHz or less.

The low frequency treatment process may be performed for 30 to 60 minutes in the low frequency region of 5 to 10 kHz.

The low frequency treatment process may be performed for 40 to 50 minutes in the low frequency region of 7 to 10 kHz.

The low frequency treatment process may be performed for 45 minutes in the low frequency region of 8.5 kHz.

In the manufacture of the artificial clay of the present invention may further comprise a pigment for producing an artificial clay having a variety of colors.

In the preparation of the artificial clay of the present invention may further comprise the step of further adding a pigment when obtaining a mixture of the base material, a moisturizing agent, boric acid, microspheres, calcium chloride in order to produce an artificial clay having a variety of colors.

In the preparation of the artificial clay of the present invention to obtain a mixture of a base material, a moisturizing agent, boric acid, microspheres, calcium chloride in order to prepare an artificial clay having a variety of colors red pigment, blue pigment, yellow pigment, black And further adding 0.5 to 5 parts by weight of any one or more pigments selected from the group of pigments.

The base material, moisturizer, boric acid, microspheres, the role and content of calcium chloride, which are components of the artificial clay in the manufacture of the artificial clay of the present invention, have already been mentioned in the description of the artificial clay, and thus the details thereof will be omitted. .

The artificial clay of the present invention and the method for producing the same have been investigated under various conditions. In order to achieve the object of the present invention, it is preferable to provide the artificial clay and the method for producing the same according to the above-mentioned conditions.

The present invention includes artificial clay prepared by the above-mentioned method.

Hereinafter, the present invention will be described in detail with reference to Examples and Test Examples. However, these are intended to explain the present invention in more detail, and the scope of the present invention is not limited thereto.

Example 1-1 Preparation of Artificial Clay (1-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 1 g of glycerin, 0.1 g of boric acid, 1 g of microspheres, and 1 g of calcium chloride were mixed to obtain a mixture.

The mixture was stirred at 500 ° C. for 60 minutes at 40 ° C. to prepare artificial clay.

Example 1-2 Preparation of Artificial Clay (1-2)

To 100 g of polyvinylpyrrolidone solution, 1 g of propylene glycol, 0.1 g of boric acid, 1 g of microspheres, and 1 g of calcium chloride were mixed to obtain a mixture.

The mixture was stirred at 500 ° C. for 60 minutes at 40 ° C. to prepare artificial clay.

Example 2-1 Preparation of Artificial Clay (2-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 10 g of glycerin, 3 g of boric acid, 4 g of microspheres, and 10 g of calcium chloride were mixed to obtain a mixture.

The mixture was stirred at 1000 rpm for 45 minutes at 65 ℃ to prepare artificial clay.

Example 2-2 Preparation of Artificial Clay (2-2)

To 100 g of polyvinylpyrrolidone solution, 10 g of propylene glycol, 3 g of boric acid, 4 g of microspheres, and 10 g of calcium chloride were mixed to obtain a mixture.

The mixture was stirred at 1000 rpm for 45 minutes at 65 ° C to prepare artificial clay.

Example 3-1 Preparation of Artificial Clay (3-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 20 g of glycerin, 5 g of boric acid, 8 g of microspheres, and 20 g of calcium chloride were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare artificial clay.

Example 3-2 Preparation of Artificial Clay (3-2)

To 100 g of polyvinylpyrrolidone solution, 20 g of propylene glycol, 5 g of boric acid, 8 g of microspheres, and 20 g of calcium chloride were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare artificial clay.

Comparative Example

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 10 g of propylene glycol, 3 g of boric acid, 4 g of microspheres, and 3 g of silica were mixed to obtain a mixture.

The mixture was stirred at 200 ° C. for 30 minutes at 25 ° C. to prepare artificial clay.

Example 4-1 Preparation of Color Artificial Clay (1-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 15 g of glycerin, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of red pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to prepare a red artificial clay.

Example 4-2 Preparation of Color Artificial Clay (1-2)

To 100 g of polyvinylpyrrolidone solution, 15 g of propylene glycol, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of red pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to prepare a red artificial clay.

Example 5-1 Preparation of Color Artificial Clay (2-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 15 g of glycerin, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of blue pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm at 90 ° C. for 30 minutes to prepare blue artificial clay.

Example 5-2 Preparation of Color Artificial Clay (2-2)

To 100 g of polyvinylpyrrolidone solution, 15 g of propylene glycol, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of blue pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm at 90 ° C. for 30 minutes to prepare blue artificial clay.

Example 6-1 Preparation of Color Artificial Clay (3-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 15 g of glycerin, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of a yellow pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to give a yellow artificial clay.

Example 6-2 Preparation of Color Artificial Clay (3-2)

To 100 g of polyvinylpyrrolidone solution, 15 g of propylene glycol, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of yellow pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to give a yellow artificial clay.

Example 7-1 Preparation of Color Artificial Clay (4-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 15 g of glycerin, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of green pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare green artificial clay.

Example 7-2 Preparation of Color Artificial Clay (4-2)

To 100 g of polyvinylpyrrolidone solution, 15 g of propylene glycol, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of green pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare green artificial clay.

Example 8-1 Preparation of Color Artificial Clay (5-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 15 g of glycerin, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of black pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare black artificial clay.

Example 8-2 Preparation of Color Artificial Clay (5-2)

To 100 g of polyvinylpyrrolidone solution, 15 g of propylene glycol, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of black pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare black artificial clay.

Example 9-1 Preparation of Color Artificial Clay (6-1)

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 15 g of glycerin, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, 1.5 g of red pigment, and 1.5 g of yellow pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to prepare an orange artificial clay.

Example 9-2 Preparation of Color Artificial Clay (6-2)

To 100 g of polyvinylpyrrolidone solution, 15 g of propylene glycol, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, 1.5 g of red pigment, and 1.5 g of yellow pigment were mixed to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to prepare an orange artificial clay.

<Example 10-1>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 1 g of glycerin, 0.1 g of boric acid, 1 g of microspheres, and 1 g of calcium chloride were mixed under an ultrasonic treatment to obtain a mixture.

The mixture was stirred at 500 ° C. for 60 minutes at 40 ° C. to prepare artificial clay.

The sonication process in the above was carried out for 45 minutes under 60kHz sonication.

<Example 10-2>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of 30% polyvinyl alcohol solution, 1 g of glycerin, 0.1 g of boric acid, 1 g of microspheres, and 1 g of calcium chloride were mixed under a low frequency treatment step to obtain a mixture.

The mixture was stirred at 500 ° C. for 60 minutes at 40 ° C. to prepare artificial clay.

The low frequency treatment process was performed for 45 minutes under the low frequency treatment of 8.5 kHz.

<Example 11-1>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 10 g of glycerin, 3 g of boric acid, 4 g of microspheres, and 10 g of calcium chloride were mixed under an ultrasonic treatment to obtain a mixture.

The mixture was stirred at 1000 rpm for 45 minutes at 65 ° C to prepare artificial clay.

The sonication process in the above was carried out for 45 minutes under 60kHz sonication.

<Example 11-2>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 10 g of glycerin, 3 g of boric acid, 4 g of microspheres, and 10 g of calcium chloride were mixed under a low frequency treatment step to obtain a mixture.

The mixture was stirred at 1000 rpm for 45 minutes at 65 ℃ to prepare artificial clay.

The low frequency treatment process was performed for 45 minutes under the low frequency treatment of 8.5 kHz.

<Example 12-1>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 20 g of glycerin, 5 g of boric acid, 8 g of microspheres, and 20 g of calcium chloride were mixed in an ultrasonic treatment step to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare artificial clay.

The sonication process in the above was carried out for 45 minutes under 60kHz sonication.

<Example 12-2>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 20 g of glycerin, 5 g of boric acid, 8 g of microspheres, and 20 g of calcium chloride were mixed under a low frequency treatment step to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ℃ to prepare artificial clay.

The low frequency treatment process was performed for 45 minutes under low frequency treatment of 8.5 kHz.

<Example 13-1>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

To 100 g of a 30% polyvinyl alcohol solution, 15 g of glycerin, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of red pigment were mixed in an ultrasonic treatment step to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to prepare a red artificial clay.

The sonication process in the above was carried out for 45 minutes under 60kHz sonication.

<Example 13-2>

To 100 g of polyvinylpyrrolidone solution, 15 g of propylene glycol, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of red pigment were mixed under a low frequency treatment step to obtain a mixture.

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to prepare a red artificial clay.

The low frequency treatment process was performed for 45 minutes under the low frequency treatment of 8.5 kHz.

<Example 13-3>

Polyvinyl alcohol was added to the purified water to obtain a 30% polyvinyl alcohol solution.

15 g of a mixture of glycerin and propylene glycol in a weight ratio of 1: 6 to 100 g of a 30% polyvinyl alcohol solution, 3.5 g of boric acid, 5 g of microspheres, 15 g of calcium chloride, and 3 g of a red pigment were mixed under an ultrasonic treatment to obtain a mixture. .

The mixture was stirred at 2000 rpm for 30 minutes at 90 ° C to prepare a red artificial clay.

The sonication process in the above was carried out for 45 minutes under 60kHz sonication.

Test Example 1 Measurement of Curing Characteristics

Whether the curing time for the test group and the control group using the artificial clay prepared in Example 1-1, Example 2-1, Example 3-1 as a test group and the artificial clay prepared in Comparative Example as a control group Was measured and the results are shown in Table 1 below.

In the measurement of the curing time, the artificial clay of the test group and the artificial clay of the control group were made to have the same size, and then, the resultant was dried at 30 ° C. and the time until the curing time was measured.

Table 1. Measurement of curing time for test and control groups

Item Example 1-1 Example 2-1 Example 3-1 Comparative example Curing time (hr) Within 43 hours Within 45 hours Within 42 hours Within 24 hours

* In Table 1, the measurement time of the curing time is measured for 10 artificial clays of each test group and 10 artificial clays of the control group and shows the average value thereof, which is deleted less than 30 minutes from the measurement time when measuring the curing time, More than 30 minutes were recognized as 1 hour.

Test Example 2 Measurement of Elastic Properties

Using the artificial clay test group prepared in Examples 1-1, Example 2-1, and Example 3-1 and the artificial clay prepared in Comparative Example as a control, the elastic properties of the test group and the control group were measured. The results are shown in Table 2 below.

The elastic property measurement is made of artificial clay of the test group and artificial clay of the control group to the same size, and then measure the height of the spring bouncing off from the ground after dropping it at a height of 1m.

Table 2. Measurement of Elasticity of Test and Control Groups

Item Example 1-1 Example 2-1 Example 3-1 Comparative example Elastic property (cm) 41 cm 43 cm 42 cm 33 cm

* In Table 2, the measured values of the elastic properties were measured for 10 artificial clays of each test group and 10 artificial clays of the control group, and the average values thereof were measured.

<Test Example 3> Crack resistance measurement

Cracks of the test group and the control group were used as the artificial clay test groups prepared in Example 1-1, Example 2-1, and Example 3-1, and the artificial clay manufactured in Comparative Example was used as a control group. The measurement was performed and the results are shown in Table 3 below.

The cracks are measured by making artificial clay of the test group and artificial clay of the control group with the same size, and then performing natural drying at 30 ° C. for 24 hours and visually measuring the degree of cracking of each spherical shape.

Table 3. Measurement of Cracks in Test and Control Groups

Item Example 1-1 Example 2-1 Example 3-1 Comparative example Cracking ○ ○ ○ △

* ○: No cracking, △: Some cracking

As mentioned in Test Examples 1 to 2, the artificial clays prepared in Examples 1-1, 2-1, and 3-1 prepared according to the present invention have properties for curing, elasticity, and cracking. In, it can be seen that it has very excellent characteristics compared to the artificial clay prepared in the conventional comparative example.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and modified within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated that it can be changed.

Claims (5)

Any one selected from the group of glycerin and propylene glycol with respect to 100 parts by weight of at least one base material selected from the group of polyvinylalcohol (PVA) solution and polyvinyl pyrrolidone solution Elastic properties, characterized in that it comprises 1 to 20 parts by weight of one or more moisturizers, 0.1 to 5 parts by weight of boric acid, 1 to 8 parts by weight of microspheres, and 1 to 20 parts by weight of calcium chloride (CaCl ₂ ) Excellent artificial clay. According to claim 1, further comprising a pigment as a component of the artificial clay, at least one pigment selected from the group of red pigments, blue pigments, yellow pigments, black pigments based on 100 parts by weight of polyvinyl alcohol solution ) Artificial clay having excellent elastic properties, characterized in that it further comprises 0.5 to 5 parts by weight. 1 to 20 parts by weight of any one or more moisturizers selected from the group of glycerine, propylene glycol, 0.1 to 5 parts by weight of boric acid, micro, with respect to 100 parts by weight of one or more base materials selected from the group of polyvinyl alcohol solution and polyvinylpyrrolidone solution Mixing 1 to 8 parts by weight of spear and 1 to 20 parts by weight of calcium chloride to obtain a mixture; And Method for producing an artificial clay having excellent elastic properties, characterized in that it comprises the step of stirring the mixture at 500 to 2000rpm for 30 to 60 minutes at 40 to 90 ℃. The method of claim 3, wherein the mixing of the base material, the humectant, the boric acid, the microspheres and the calcium chloride is carried out for 30 to 60 minutes under 20kHz to 100kHz sonication or for 30 to 60 minutes under the low frequency treatment of 5 to 10kHz. The method of manufacturing artificial clay excellent in elastic properties, characterized in that it further comprises the step of performing under a low frequency treatment process. According to claim 3, further comprising a pigment as a component of the artificial clay, 0.5 to 5 parts by weight of any one or more pigments selected from the group of red pigments, blue pigments, yellow pigments, black pigments based on 100 parts by weight of the base material Method for producing artificial clay excellent in elastic properties, characterized in that it further comprises the step of adding.