KR101480795B1 - A rubber clay for handicraft - Google Patents

Abstract

The present invention relates to rubber clay for handicrafts discolored depending on the temperature and capable of being thermally hardened. The purpose of the present invention is to make the optimal plasticity of the rubber clay by using an inorganic compound as a main component. Accordingly, the rubber clay is free from stickiness and does not harden even when made into a handicraft (model) and unkept, thereby being reusable, and elasticity is imparted to the handicraft while the handicraft hardens when being dried by a thermal oven. Also, the color of the rubber clay changes depending on the temperature, thereby more effectively arousing curiosity, originality and creativity. According to the present invention, the rubber clay for handicrafts discolored depending on the temperature and capable of being thermally hardened is formed by mixing: a silicone base in a gel state, prepared in a content of 60-80% with respect to the total weight of the rubber clay and composed of a mixture of siloxane, silicone, dimethyl, methylvinyl, and vinyl group-terminated; a plasticity control agent prepared in a content of 15-25% with respect to the total weight of the rubber clay and composed of a powder-type silica-based component to control hardness; an oil-type anti-solidifying agent prepared in a content of 1-5% with respect to the total weight of the rubber clay and composed of a polydimethylsiloxane-based component to prevent solidification; a color pigment prepared in a content of 1-3% with respect to the total weight of the rubber clay to create color; a platinum hardener prepared in a content of 0.1-5% with respect to the total weight of the rubber clay; and a thermochromic pigment prepared in a content of 0.01-3% with respect to the total weight of the rubber clay and discolored depending on the temperature change.

Description

{A RUBBER CLAY FOR HANDICRAFT} which is discolored and thermally curable by temperature.

The present invention relates to a cohesive rubber clay using an inorganic compound which is not tacky and does not get touched on hands, and which can be reused because it is not hardened even after being left for a long time after the work is made. More particularly, it relates to a "cohesive rubber clay capable of being thermally cured and discolored according to temperature" which can change its color according to temperature change to induce curiosity and creativity more effectively.

Generally, the known artificial rubber clay (so-called rubber clay) is manufactured so that children can easily play the artificial clay. Such as an oil-based rubber clay or an aqueous rubber clay. The oil-based rubber clay can maintain its shape when it is stored after it is manufactured, but it has a disadvantage that it is difficult for children to make a model using the material because the rubber clay is hard. In addition, water-based rubber clay has a disadvantage in that it is easy to be used for children's play because of easy dough, while the water content is high, so that it tends to become tacky at the time of manufacture and shrinkage and warpage when dried. In addition, the oil-based rubber clay and the water-based rubber clay have disadvantages in that they can not be easily re-used when they are left to stand after the workpiece is manufactured. In the case of using the oily rubber clay or the aqueous rubber clay, There is a disadvantage that cracks are generated in the workpiece due to rapid progress of hardening.

In order to solve such a disadvantage, Applicant has made a proper plasticity by using an inorganic compound as a main component, so that it does not become tacky and does not stick to the hand, makes a work (model), and is not hardened even after being left for a long time, ("Application No. 10-2011-0028550") filed on Mar. 30, 2011, and "Separate heat-curable cohesive rubber clay" suitable for toys as the workpiece is cured (Registration No. 10-1185815) and secured the right.

"Thermally curable cooperable rubber clay" disclosed in the Japanese Patent Registration No. 10-1185815 is prepared in an amount of 60 to 80% based on the total weight of the rubber clay and is composed of siloxane and silicon, dimethyl, methyl vinyl, vinyl group-terminated A gel-state silicon base which is mixed; 15 to 35% based on the total weight of the rubber clay; a plasticity modifier for adjusting the hardness of the silica-based powder system; An antioxidant of oil type which is composed of 1 to 5% based on the weight of the whole rubber clay and is composed of a polydimethylsiloxane system to prevent solidification; An antimicrobial agent provided at 0.1 to 1% with respect to the weight of the entire rubber clay to prevent bacterial propagation; A platinum curing agent provided in an amount of 0.65 to 5% based on the total weight of the rubber clay; As a technical feature.

In the thermally vulcanizable clay made of the above-mentioned composition, inorganic compound having excellent transparency is the main component and the antifatant in oil form is mixed. Therefore, it does not stick to the hand and does not stick to the hand, And it is not hardened even if it is reused. In addition, a platinum curing agent is added to the main component of the inorganic compound, so that it is hardened in the process of drying by a heat oven, and at the same time, elasticity is imparted, thereby making a workpiece suitable for a toy.

However, in the "thermosetting cooperable rubber clay" disclosed in the above-mentioned Japanese Patent No. 10-1185815, it is possible to produce various colors by changing the color pigments to be added, but they can not change their colors themselves. Thus, there is a limit to induce curiosity and creativity / creativity in most infants and children who play with cohesive rubber clay.

The present invention has been made to solve such a problem, It is an object of the present invention to provide a method for manufacturing a molded article which is free from stickiness by appropriately adjusting the degree of plasticity of an inorganic compound as a main component, Of course, it also provides a "cohesive rubber clay that can be thermally cured and discolored according to temperature," which can change its own color in response to temperature changes, which can induce curiosity and creativity / creativity more effectively.

Another object of the present invention is to provide an antimicrobial agent for an inorganic compound main component, which can prevent bacterial propagation even after repeated use, and which can be thermally cured and discolored according to temperature.

Another object of the present invention is to provide a light-curing cohesive rubber clay which is capable of producing a luminous workpiece capable of producing a more varied atmosphere by adding a luminous agent to the main component of the inorganic compound.

According to an aspect of the present invention, In a cohesive rubber clay made of an inorganic compound which can be used repeatedly for work, and which is discolored and thermally cured by temperature;

Said cooper rubber clay; A gel state silicone base which is 60 to 80% of the total weight of the rubber clay and is composed of a mixture of siloxane and silicon, dimethyl, methyl vinyl and vinyl group-terminated; 15 to 25% based on the total weight of the rubber clay; a plasticity modifier for adjusting the hardness of the silica-based powder system; An antioxidant of oil type which is composed of 1 to 5% based on the weight of the whole rubber clay and is composed of a polydimethylsiloxane system to prevent solidification; A color pigment provided at 1 to 3% based on the total weight of the rubber clay and for producing a color; A platinum curing agent provided at 0.1 to 5% based on the total weight of the rubber clay; A zeolite pigment having a color change of 0.01 to 3% based on the total weight of the rubber clay and varying with temperature; Are mixed with each other.

The present invention also provides The zeolite pigment is a reversible zeolite pigment which gradually changes in transparency as the temperature rises with reference to 25 to 28 캜 and falls below a reference temperature to show the self color of the zeolite pigment.

The present invention also provides An antibacterial agent for preventing the propagation of bacteria, wherein the coagulating rubber clay is provided at 0.1 to 1% based on the total weight of the rubber clay; And further mixed.

The present invention also provides Wherein the co-operating rubber clay comprises 1 to 10% of a phosphorescent agent based on the total rubber clay weight; And further mixed.

According to the " coagulated rubber clay which is thermally cured and discolored according to the present invention " Since the inorganic compound is composed mainly of inorganic compounds, it does not become tacky and does not adhere to the hands, so that the workpiece (model) is made to stand in the air and is not hardened, so that it can be reused. Of course, platinum hardener is added, So that it is possible to produce a workpiece suitable for a toy. In addition, the created workpiece has the effect of being able to more effectively induce the curiosity and creativity of the child or infant by changing the color according to the temperature change.

Further, according to the " cohesive rubber clay which is discolored and thermally cured by temperature " according to the present invention, A small amount of the antimicrobial agent is mixed in the main component of the inorganic compound, which is advantageous in that it prevents the propagation of bacteria even after repeated use.

Further, according to the " cohesive rubber clay which is discolored and thermally cured by temperature " according to the present invention, A small amount of a phosphorescent agent is mixed in the main component of the inorganic compound, thereby making it possible to produce a workpiece having a luminous function.

Fig. 1 shows the composition ratio of the "cohesive rubber clay capable of being thermally cured and changed according to temperature " according to the present invention.
2 schematically shows the discoloration principle of a zeotropic pigment applied to the present invention.
3 shows a photograph of an actual product of a "co-operating rubber clay" according to the invention in which the color changes with temperature.

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And does not mean that the technical ideas and the scope of the invention are limited.

1, the silicone rubber 1, the plasticity modifier 2, the antifouling agent 3, the color pigment (not shown), and the coloring agent 4), a platinum curing agent (5), and a sion pigment (6) are mixed at a proper composition ratio, and the antimicrobial agent (7) as an additive composition and the phosphorescent agent (8) And can be given a luminous function.

Silicone base 1 is contained in an amount of 60 to 80 parts by weight based on the entire rubber clay composition and is composed of siloxanes and silicones, dimethly, methylvinyl and vinyl group- terminated). The silicone base (1) composed of the above components serves to maintain the shape of the "cohesive rubber clay ". Such a silicone base 1 should be contained in an amount of 60 to 80 parts by weight based on the total weight of the rubber clay composition to facilitate molding and maintain its shape. If it exceeds 80 parts by weight, the moldability of the workpiece is improved, The shape can easily be deformed even after this. In an embodiment of the present invention, the silicon base 1 is treated with siloxanes and silicones of Chemical Service Summary No. (CAS No.) 68083-18-1, Dimethly, methylvinyl and vinyl groups, (GEL) mixed with vinyl group-terminated.

The plasticity modifier (2) contains 15 to 25 parts by weight based on the total weight of the rubber clay composition. The plasticity modifier (2) is contained in the rubber clay composition to determine its plasticity (hardness). Such a plasticity modifier (2) is one in which the particles of silica are in the form of a powder of 5 to 50,000 millimicrons, and the use of silicon dioxide (CAS No. 7631-86-9) desirable. The silica may also be selected from the group consisting of dry silica having a particle size of 5 to 20 millimicrons and wet silica having a particle size of 20 to 2,000 millimicrons and diatomite having a particle size of 2,000 to 50,000 millimicrons Or more. The above-mentioned dry silica (Fumed Silica) is excellent in transparency and can express various colors clearly. Wet silica (Precipitated Silica) is not very excellent in transparency, but it can express color clearly. Diatomaceous earth is not suitable for producing clear colors because its color is light gray or beige, but it is suitable for expressing dark colors.

The antifouling agent (3) is contained in an amount of 1 to 5 parts by weight based on the total weight of the rubber clay composition, and is composed of a polydimethylsiloxane-based compound, and is contained in the rubber clay composition to prevent its solidification. The antifouling agent 3 is in the form of a transparent oil and it is preferable to use polydimethylsiloxane of Chemical Service Abstract No. (CAS No) 63148-62-9. The antifouling agent 3 of the above components serves as a lubricant that softens the rubber clay composition while delaying the curing and solidification of the silicone composition over time. In addition, the antifouling agent 3 made of polydimethylsiloxane is widely used for women's cosmetics and the like, and not only prevents solidification of the rubber clay composition, but also brightens the surface of the rubber clay composition.

The color pigment (4) is contained in an amount of 1 to 3 parts by weight based on the total weight of the rubber clay composition, and serves to impart color (color) to the rubber clay composition having excellent transparency. When only the silicone base 1, the plasticity modifier 2 and the antifouling agent 3 are mixed and kneaded in the above-described rubber clay composition, it is milky white, and powder having a color such as red, green, yellow, Mixing the color pigment (4) in the form of a color can produce a variety of co-operating rubber clay compositions.

The platinum curing agent 5 (also known as a thermosetting agent) is contained in an amount of 0.1 to 5 parts by weight based on the total weight of the rubber clay. The platinum curing agent 5 serves to cure the workpiece and to impart elasticity to the workpiece (or the molded article) produced through the silicone composition in the process of drying the workpiece (or the molded article) by an oven. If the content of the platinum curing agent (5; thermosetting agent) is less than 0.1%, it may be difficult to keep for a long period of time because the workpiece is hardened and deformed due to external force even after it is produced. On the other hand, if the content of the platinum curing agent 5 (thermosetting agent) is excessively 5% or more, the curing time is too short, and the curing agent can harden in the process of manufacturing the workpiece.

The platinum curing agent 5 is composed of a platinum catalyst in an amount of 0.05 to 1.5 parts by weight based on the total weight of the rubber clay and a crosslinking agent (cross-link) in an amount of 0.05 to 3.5 parts by weight based on the total weight of the rubber clay, It is preferable to use an organopolysiloxane having the same structure and to cure the organovinyl polysiloxane in which the vinyl group is substituted at the terminal and the organohydrogenpolysiloxane in which the hydrogen element is directly bonded to the silicon element.

<Platinum Catalyst Structure>

 In the present invention, the platinum catalyst constituting the platinum curing agent (5) is selected from Platinate (2-), hexachloro-, (OC-6-11) -dihydrogenreaction productswith 2, 4, 6, and 8 in Siloxanesandsilicones, di- -terraethenyl-2, 4, 6, 8-tetramethylcyclotetrasiloxane, and the like. In the present invention, the cross-linking agent constituting the platinum curing agent 5 is selected from the group consisting of Siloxanesandsilicones, di-Me, Mevinyl, vinyl group-terminated, siloxanes and silicones, di- 5-Triazine-2,4,6 (1H, 3H, 5H) trione, 1,3,5-tri-2-propenyl- and 1-Ethynylcyclohexanol.

In addition, the zeotropic pigment 6 is mixed in an amount of 0.01 to 3% based on the weight of the entire rubber clay composition, and this is in the form of a powder whose color changes according to the temperature change. Sion pigment (6) is basically divided into reversible and irreversible depending on whether the temperature is higher than the reference temperature and becomes transparent when the temperature is lowered and then returned to the original color when the temperature is lowered again. The reversible zeolite pigment can be used repeatedly back to its original color, and the irreversible zeolite pigment is a one-shot that does not return to its original color. When the reversible zeolite pigment is further described in detail, for example, a black pigment whose reference temperature is 20 ° C, that is, a pigment which changes to transparent at 20 ° C or higher; When the room temperature is 10 ° C, it appears black, but when the temperature exceeds 20 ° C, it gradually becomes transparent. If the ambient temperature is 30 ° C, it is transparent at room temperature. As shown in FIG. 2, the zeolite pigment 6 is basically made of a microcapsule material. The capsule contains an electron donor and an electron acceptor, When the materials are combined and colored and heat is applied, they are separated and become transparent.

In the embodiment of the present invention, the zeotropic pigment (6) is made in powder form so that it can be easily mixed with other compositions. It is gradually changed to transparent as the temperature rises at 25 to 28 ° C, And was composed of a reversible zeolite pigment which exhibits its own color of the sion pigment (6) when it goes down. The cyan pigment having a color change reference temperature of 25 to 28 占 폚 is employed because it is easy to see visually that the color of the "workpiece rubber clay" according to the present invention is changed even at a small temperature difference In order to make it possible. In addition, such a zeotropic pigment 6 can be blended with a color pigment color which is basically mixed in the rubber clay composition with its own hue, thereby making a cooperating rubber clay having a wider variety of colors. Although the zeolite pigment is in the form of a powder, it is of course possible to apply a liquid type zeolite slurry (Thermochromic-Slurry)

On the other hand, the antimicrobial agent (7) which can be mixed additionally is contained in an amount of 0.1 to 1 part by weight based on the total weight of the rubber clay composition, and serves to prevent the growth of bacteria in the rubber clay composition. The antimicrobial agent (7) can be any liquid type or powder type as long as it can impart antimicrobial properties to the rubber clay composition. The rubber clay composition containing the antimicrobial agent (7) can inhibit bacterial growth Thereby preventing the user who plays the rubber clay composition with the toys from being infected by the bacteria.

The luminous agent 8, which can be further mixed, is contained in an amount of 1 to 10 parts by weight based on the total weight of the rubber clay composition. When an aluminum-based phosphorescent agent having a particle size of 3 to 10,000 microns is mixed, light energy is accumulated on its own A rubber clay composition that emits light when it is dark can be made. In the embodiment of the present invention, the phosphorescent agent 8 is of aluminum type, but it is needless to say that various kinds of phosphorescent agents can be selected and applied.

Next, the production process of the co-fired rubber clay which is discolored according to the temperature according to the present invention to which the above composition is applied will be described.

First, the manufacturing process of the cohesive rubber clay according to the present invention comprises a kneading step of kneading and mixing the silicon base 1, the plasticity modifier 2 and the anti-static agent 3, (4), a platinum curing agent (5), and a sion pigment (6 may include an antimicrobial agent and a phosphorescent agent) are added and mixed.

The kneading process is carried out by using a kneading reader to prepare a silicone base (1) having 60 to 80% of the total rubber clay weight, a plasticity adjusting agent (2) having 15 to 25% of the total rubber clay weight, Is kneaded with 1 to 5% of the antifogging agent (3). After the kneading process, the silicone base 1, the plasticity regulator 2, and the antifogging agent 3 are evenly mixed to complete the rubber clay in a DOUGH form.

Subsequently, in the mixing process, a color pigment 4 of 1 to 3%, a platinum curing agent 5 of 0.1 to 5% based on the total rubber clay weight, and a total rubber clay weight To the rubber clay in the form of dough, 0.01 to 3% of the zeotropic pigment (6) is added. Through this mixing process, And finally a cohesive rubber clay that is discolored and thermally curable by the temperature according to the present invention is finally completed.

These co-operating rubber clays can be applied with color pigments (4) and zeotropic pigments (6) of different colors for various color implementations, and since the mixing ratio of each composition is most important in the production of cooperating rubber clay, It is preferable to prepare them separately and then mix them.

On the other hand, the addition of a certain amount of antimicrobial agent (7) in the mixing process in the production of coagulated rubber clay can prevent the propagation of bacteria and addition of a certain amount of phosphorescent agent (8) A luminous workpiece can be produced. In addition, if the user manually removes some of the colored rubber clay and kneads them, the rubber clay dough having another color can be made freely.

Hereinafter, the physical properties according to the composition ratios of the above-mentioned co-fired rubber clay which is discolored and thermally cured by temperature according to the present invention will be described.

&Lt; Example 1 >

70 parts by weight of a silicone base, 22 parts by weight of a plasticity modifier, 3 parts by weight of an antifogging agent, 1 part by weight of a color pigment, 3 parts by weight of a platinum curing agent and 1 part by weight of a sion pigment were mixed and kneaded to prepare a cooperating rubber clay.

&Lt; Comparative Example 1 &

, 80 parts by weight of a silicone base, 12 parts by weight of a plasticity modifier, 3 parts by weight of an antifogging agent, 1 part by weight of a color pigment, 3 parts by weight of a platinum curing agent and 1 part by weight of a sion pigment were mixed and kneaded to prepare a cooperating rubber clay.

&Lt; Comparative Example 2 &

38 parts by weight of silicone base, 57 parts by weight of a plasticity modifier, 3 parts by weight of an antifogging agent, 1 part by weight of a color pigment, 3 parts by weight of a platinum curing agent and 1 part by weight of a sion pigment were mixed and kneaded to prepare cooperating rubber clay.

The change in plasticity with time of untreated plastic clay prepared in Example 1 and Comparative Examples 1 and 2 was measured and shown in Table 1 below.

However, the plasticity meter used as the test standard is to load the specimen between two parallel racks, apply a predetermined load, and read the time and thickness changes with a dial indicator to obtain plasticity.

① Specification: ASTMD-926

② Type: Williams Type

③ Standard specification: Pressurized load: 5Kg, Pressurized area: 60mm in diameter,

            Dial gauge: Stroke 15mm or more 1 / 100mm, Body weight: about 10kg

④ Sample preparation: sample thickness 10 mm, cylindrical diameter 16 mm

⑤ Test method: a. Set the dial indicator to zero.

             b. Wait until the temperature of the environment is stable.

             c. Place samples quickly between two parallel shelves.

             d. Read the gauge after the time you want to measure.

<Table 1>

As shown in Table 1, the co-active rubber clay prepared in Example 1 did not harden at all even after being left at room temperature for a long time, and the plasticity of the product was well formed It is easy to mold the workpiece and it can be stored for a long time.

However, the coarse rubber clay prepared in Comparative Example 1 was not hardened at all at room temperature for a long time, and the plasticity was so low that the workpiece was distorted even if the workpiece was molded, and the coarse rubber The clay was not made and the workpiece could not be manufactured because the product was not made.

Table 2 below shows the change in plasticity with time of the plasticity clay produced by Example 1 and the plasticity of other products.

<Table 2>

As can be seen from the above Table 2, although there may be some errors in the measurement of the cohesive rubber clay according to the present invention, even if it is left at room temperature for a long time, there is no large change in plasticity, In case of Company A, the degree of plasticity was improved as time passed, and cracking occurred on the surface when it passed for more than 1 day. In case of Company B, plasticity increased with time, The surface is hardened like a sponge and the work is impossible. In the case of the product C, since the plasticity is high from the beginning, the infant and the child are very unsuitable for making the workpiece.

On the other hand, a rubber clay paste whose own color is changed according to the temperature change through adjustment of the content ratio of the color pigment (4), platinum curing agent (5) and zeotropic pigment (6), which are essentially mixed in the co- . That is, as shown in FIG. 3, the co-active rubber clay according to the present invention in which a yellow color pigment is mixed exhibits a deep yellow color at room temperature (18 ° C.) and a transparent zeolite pigment color at 40 ° C. The pellet of the present invention having the orange pigment of the present invention mixed with the pigment of the orange color changed into a pale yellow color at the room temperature (18 DEG C) and turned into a pale orange color at 40 DEG C at the room temperature (18 DEG C) (18 ℃), it turns into a deep purple color. At 40 ℃, it turns into a light blue color. Accordingly, when the workpiece is made of the cohesive rubber clay according to the present invention, the color of the workpiece varies depending on the temperature, which can more effectively induce curiosity and creativity / creativity for children or infants.

When the formed workpiece is heated for 10 minutes at a temperature of about 200 캜 using a heat oven, elasticity is imparted while being cured, so that the shape can be preserved.

In addition, as described above in the cooperative rubber clay of the present invention, in addition to the essential composition, the antimicrobial agent (7) and the phosphorescent agent (8) are mixed with each other to suppress the propagation of bacteria, Of course.

1. Silicon Base
2. Plasticity regulator
3. Antioxidant
4 .. Color pigments
5. Platinum Curing Agent
6 .. Zion pigment
7. Antimicrobial agent
8 .. Luminescent agent

Claims (4)

In a cohesive rubber clay made of an inorganic compound which can be used repeatedly for work, and which is discolored and thermally cured by temperature;
Said cooper rubber clay comprising;
A gel state silicone base which is 60 to 80% of the total weight of the rubber clay and is composed of a mixture of siloxane and silicon, dimethyl, methyl vinyl and vinyl group-terminated;
15 to 25% based on the total weight of the rubber clay; a plasticity modifier for adjusting the hardness of the silica-based powder system;
An antioxidant of oil type which is composed of 1 to 5% based on the weight of the whole rubber clay and is composed of a polydimethylsiloxane system to prevent solidification;
A color pigment provided at 1 to 3% based on the total weight of the rubber clay and for producing a color;
A platinum curing agent provided at 0.1 to 5% based on the total weight of the rubber clay;
It is prepared by 0.01 ~ 3% of the weight of the whole rubber clay. It is changed from 25 ~ 28 ℃ to the reference temperature gradually as the temperature rises. When the temperature falls below the reference temperature, the reversible quaternary pigment is displayed. By weight based on the total weight of the rubber composition. delete The method according to claim 1,
Said cooper rubber clay comprising;
0.1 to 1% based on the total weight of the rubber clay, and an antimicrobial agent for preventing bacterial growth; By weight based on the total weight of the rubber composition. The method according to claim 1,
Said cooper rubber clay comprising;
1 to 10% of a phosphorescent agent based on the total weight of the rubber clay; By weight based on the total weight of the rubber composition.

Images