KR101185815B1 - A rubber clay for handicraft - Google Patents

Abstract

PURPOSE: Rubber clay for heat curing is provided to be suitable for a toy by being hardened in the process of drying with a heating oven and having elasticity. CONSTITUTION: A gel-state silicon base accounts for 60-80% of the whole weight of rubber clay. A plasticity control agent accounts for 15-35% of the whole weight of the rubber clay and controls hardness with a silica family. An oil type solidification preventing agent accounts for 1-5% of the whole weight of the rubber clay and prevents hardness with a polydimethysiloxane family. An antimicrobial agent prevents bacteria from breeding. A platinum hardening agent accounts for 0.65-5% of the whole weight of the rubber clay.

Description

Thermosetting rubber rubber {A RUBBER CLAY FOR HANDICRAFT}

The present invention relates to a working rubber clay, and more specifically, it is not sticky, so it can be reused as it is not hardened even after being left for a long time after being made by hand without making a hand. It relates to a functional rubber clay capable of thermosetting.

In general, rubber rubber (aka, rubber clay) is made so that children can easily play peacock, and is manufactured and sold as oil-based rubber clay or water-based rubber clay.

The oily rubber clay can maintain its shape as it is stored after manufacturing the work sculpture, but the rubber clay is hard, children have a problem that it is difficult to produce a model.

In addition, the water-based rubber clay is easy to use for children because it is easy to knead, while the sticky phenomenon in the production of a lot of moisture content is severe, shrinkage and distortion occurs when dried, it was difficult to store for a long time .

In addition, the above-mentioned oil-based rubber clay and water-based rubber clay has a problem that it is hard to be easily reused if left after producing the workpiece, and using the oven for the purpose of permanent storage after manufacturing the workpiece with oil-based rubber clay or water-based rubber clay. There is a problem that the hardening proceeds rapidly through the drying process, causing cracks in the workpiece.

The present invention is to solve this problem; It is an object of the present invention to provide a rubber ball clay that can be thermally cured as a toy by adding a platinum hardener and giving elasticity as the workpiece is hardened by drying.

Another object of the present invention is to provide a functional rubber clay which is non-sticky in the manufacturing process using a silicone base and an anti-hardening agent having excellent transparency, and which can be thermally cured even after a workpiece is made.

Still another object of the present invention is to provide a functional rubber clay which contains an antimicrobial agent and is capable of thermosetting in which bacterial growth is suppressed.

According to an aspect of the present invention,

In the working rubber clay which consists of an inorganic compound which can be used as a working degree;

The rubber clay; A gel-based silicone base provided with 60 to 80% of the total weight of the rubber clay and formed by mixing siloxane with silicon, dimethyl, methyl vinyl, and vinyl group-terminated; It is provided with 15 to 35% by weight of the total rubber clay and made of a powder-based silica-based plasticity modifier to adjust the hardness; It is provided with 1 to 5% by weight of the total rubber clay and made of polydimethylsiloxane system to prevent solidification in the form of an oil to prevent solidification; It is provided with 0.1 to 1% by weight of the total rubber clay and antibacterial agent to prevent bacterial growth; Platinum hardener is provided in 0.65 to 5% relative to the total rubber clay weight; It is characterized by consisting of a mixture.

The present invention also provides A platinum catalyst in which the platinum hardener is provided in an amount of 0.15 to 1.5% based on the total weight of the rubber clay; Crosslinking agent is provided in 0.5 to 3.5% by weight of the total rubber clay; Characterized in that made.

In addition, the present invention is characterized in that the platinum catalyst has the following structural formula.

According to the thermosetting functional rubber clay according to the present invention made of a mixture as described above; Platinum hardener is added to cure in the process of drying with a hot oven, and at the same time, elasticity is provided to provide an excellent work piece suitable for toys.

In addition, according to the present invention, there is no stickiness in the manufacturing process by using a silicone base and an anti-solidification agent having excellent transparency, and exhibits an excellent effect of not hardening even after being manufactured as a workpiece.

In addition, according to the present invention, the antimicrobial agent is contained, which shows an excellent effect of inhibiting the growth of bacteria.

Figure 1 shows the structural formula of the platinum catalyst used in the present invention.

In the following, preferred embodiments of the present invention and the physical properties of each component will be described in detail, which is intended to explain in detail enough to be able to easily carry out the invention by one of ordinary skill in the art, This does not mean that the technical spirit and scope of the present invention is limited.

The thermosetting functional rubber clay according to the present invention is made of a silicone base, a plasticity control agent, a hardening agent, an antibacterial agent and a platinum hardener, and a silicone base 60 to 80 parts by weight, a plasticity control agent with respect to the total rubber clay weight. It is more preferable that it consists of 15-35 weight part, 1-5 weight part of anti hardening agents, 0.1-1 weight part of antibacterial agents, and 0.65-5 weight part of platinum hardening agents.

The silicone base contains 60 to 80 parts by weight, and is composed of siloxane and silicones, dimethyl, dimethyl, methylvinyl and vinyl group-terminated. The silicone base composed of the components plays a role in maintaining the shape of the working rubber clay.

In this case, the silicone base is a siloxane and chemicals (Siloxanes and silicones), dimethyl (Dimethly), methylvinyl (vinyl group) and vinyl group-terminated (CAS No) 68083-18-1 -terminated).

The silicon base should be contained in an amount of 60 to 80 parts by weight based on the total weight of the working rubber clay to facilitate the molding and maintain the shape. When the silicon base is contained in an amount exceeding 80 parts by weight, the formability of the work is improved, but it is left after making the work. The shape is easily deformed.

The plasticity modifier contains 15 to 35 parts by weight based on the total weight of the rubber clay, made of a powder-based silica, it is contained in the functional rubber clay serves to determine the plasticity (hardness) of the functional rubber clay .

At this time, the plasticity regulator is a particle of silica powder of 5 to 50,000 millimicron (Millimicron), it is preferable to use the silicon dioxide (Silicone Dioxide) of Chemical Service Summary No. (CAS No) 7631-86-9 Do.

In addition, the silica is selected from the group consisting of dry silica having particles of 5 to 20 millimicrons and wet silica having particles of 20 to 2,000 millimicrons, and diatomaceous earth having particles of 2,000 to 50,000 millimicrons. It may be made of one or more.

The dry silica (Fumed Silica) is very excellent in transparency and has the advantage of expressing a variety of colors clear, wet silica (Precipitated Silica) is not very excellent in transparency but can express the color clear.

In addition, since the diatomaceous earth has a light gray or beige color, the diatomaceous earth is not suitable for producing a clear color, but is suitable for expressing a dark color.

The anti-solidifying agent is contained 1 to 5 parts by weight based on the total weight of the rubber clay, and is made of a polydimethylsiloxane system, it is contained in the functional rubber clay serves to prevent the solidification of the functional rubber clay.

In addition, the anti-solidification agent is in the form of a transparent oil (oil), it is preferable to use polydimethylsiloxane (CAS No) 63148-62-9.

The anti-solidification agent composed of the above components serves as a lubricant to soften the functional rubber clay while delaying the hardening of the functional rubber clay to solidify with time.

In addition, the anti-solidification agent made of polydimethylsiloxane is widely used in women's cosmetics, etc., and not only prevents the solidification of the functional rubber clay, but also serves to brighten the shine and brightness on the surface of the functional rubber clay.

The antimicrobial agent contains 0.1 to 1 parts by weight based on the total weight of the rubber clay, and serves to prevent the growth of bacteria in the functional rubber clay. If the antimicrobial activity can be given to the functional rubber clay, the liquid type or powder It can be used in any form, etc., and the functional rubber clay containing the antimicrobial agent inhibits the growth of the bacteria after the production is completed, and serves to block the infection of the user who plays with the toy rubber clay as a toy. .

The platinum hardener contains 0.65 to 5 parts by weight based on the total weight of the rubber clay, and serves to make the workpiece hard and elastic at the time of drying the workpiece made of the functional rubber clay with an oven. After the drying process is complete, the toy is suitable for toys.

If the content of the platinum hardener is less than 0.65 parts by weight, the rubber rubber clay does not harden well, it is difficult to store the long-term tube because the deformation may be caused by external force even after the workpiece is manufactured, the content of the platinum hardener 5 weight When the part is exceeded, the curing time is too short and hardens in the process of manufacturing the workpiece.

The platinum hardener is composed of 0.15 to 1.5 parts by weight of a platinum catalyst based on the total weight of rubber clay and 0.5 to 3.5 parts by weight of a cross-linking agent based on the total weight of the rubber clay. It is preferable to use what consists of the same structure, and it will harden the organovinyl polysiloxane which the vinyl group substituted at the terminal, and the organohydrogen polysiloxane in which the hydrogen element is directly bonded to the silicon element.

 Platinum catalyst constituting the platinum hardener in the present invention is Platinate (2-), hexachloro-, (OC-6-11) -dihydrogenreaction products with 2, 4, 6, 8-terraethenyl- in Siloxanesandsilicones, di-Me, Mevinyl, vinylgroup-terminated 2, 4, 6,8-tetramethylcyclotetrasiloxane and the like are mixed. In the present invention, the crosslinking agent constituting the platinum hardener is Siloxanesandsilicones, di-Me, Mevinyl, vinylgroup-terminated, Siloxanes and silicones, di-Me, mMe hydrogen, Dichlorodimethylsilane reaction products with silica, and 1,3,5-Triazine -2,4,6 (1H, 3H, 5H) trione, 1,3,5-tri-2-propenyl-, 1-Ethynylcyclohexanol, etc. are mixed.

In addition, the working rubber clay according to the present invention may further comprise a color pigment or a photoluminescent agent.

The color pigment is a main component of the organic compound, and contains 1 to 3 parts by weight of the total rubber clay weight to serve to give a color (color) to the excellent silicone base composition.

The above-mentioned functional rubber clay is a clear transparent color when the functional rubber clay is prepared by mixing only a silicone base, a plasticity modifier, an anti-solidifying agent, an antibacterial agent and a platinum hardener, and a color pigment having a color such as red, green, and blue. Mixing can produce a functional rubber clay having various colors.

The photoluminescent agent contains 1 to 10 parts by weight based on the total weight of the rubber clay, and when the aluminum-based photoluminescent agent having particles of 3 to 10,000 milli microns is mixed, it accumulates light energy by itself and emits light when it is dark. I can make it.

In the embodiment of the present invention, although the aluminum series is adopted as the photoluminescent agent, various kinds of photoluminescent agents may be selected and applied.

Hereinafter, the production process method and physical properties of the thermosetting functional rubber clay according to the present invention using the composition as described above will be described with examples.

≪ Example 1 >

68 parts by weight of silicone base, 27 parts by weight of plasticity control agent, 3 parts by weight of anti-solidifying agent, 1 part by weight of antibacterial agent and 1 part by weight of platinum hardener were mixed and kneaded to prepare a rubber rubber clay.

≪ Comparative Example 1 &

82 parts by weight of a silicone base, 13 parts by weight of a plasticity regulator, 3 parts by weight of an anti-hardening agent, 1 part by weight of an antibacterial agent, and 1 part by weight of a platinum hardener were mixed and kneaded to prepare a rubber rubber clay.

Comparative Example 2

38 parts by weight of silicone base, 57 parts by weight of plasticity control agent, 3 parts by weight of anti-solidifying agent, 1 part by weight of antibacterial agent and 1 part by weight of platinum hardener were mixed and kneaded to prepare a functional rubber clay.

The plasticity over time change (unit: Units) of the functional rubber clay prepared through Example 1 and Comparative Examples 1 to 2 are shown in Table 1 below.

(However, the plasticity meter used as a test criterion is obtained by inserting a sample between two parallel shelves and applying a predetermined load to read plasticity by reading time and thickness changes with a dial indicator;

① Specification: ASTMD-926

② Type: Williams Type

③ Standard Specification: Pressurized Load: 5Kg, Pressurized Area: Diameter 60mm,

            Dial gauge: Stroke 15 mm or more, 1/100 mm, body weight: approx. 10 kg

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

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

             b. Wait until the tester environment temperature has stabilized.

             c. Quickly insert the sample between the two parallel shelves.

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

TABLE 1

As shown in Table 1 above, the functional rubber clay prepared in Example 1 did not harden at all even after being left at room temperature for a long time, and the product model was not easily distorted even when the workpiece was molded into the product due to proper plasticity. Long-term storage was possible due to easy molding.

However, the functional rubber clay prepared in Comparative Example 1 did not harden at all even after being left at room temperature for a long time, and the plasticity was so low that the model of the workpiece was distorted even when the workpiece was molded, and the functional rubber prepared through Comparative Example 2 Clay was unable to manufacture a workpiece because the product was broken, not made.

The plasticity over time change (units) of the functional rubber clay prepared by Example 1 and other companies' products is shown in Table 2 below.

<Table 2>

As can be seen in Table 2 above, in the case of the functional rubber clay according to the present invention, there may be some errors in the measurement, but even if left at room temperature for a long time there is no big change in the degree of plasticity can be worked at any time, while A company In the case of, the plasticity improves as time passes, and if more than one day elapses, cracking occurs on the surface, making work impossible.In case of the B company, the plasticity increases with time, and more than one day elapses. When the surface is hardened like a sponge, it is impossible to work. In the case of C company, plasticity is high from the beginning, so it is not suitable for infants and children to make a workpiece.

<Example 2>

68 parts by weight of silicone base, 27 parts by weight of plasticity regulator, 3 parts by weight of anti-solidifying agent, 1 part by weight of antibacterial agent and platinum hardener (0.5 parts by weight of platinum catalyst and 2 parts by weight of crosslinking agent shown in Fig. 1) were kneaded, Was used to heat the functional rubber clay for 10 minutes at a temperature of 200 ° C.

&Lt; Comparative Example 3 &

Proceed in the same manner as in Example 2, the rubber rubber prepared by mixing a platinum curing agent consisting of 0.1 parts by weight of platinum catalyst and 0.5 parts by weight of 1-ethylcyclohexanol shown in Figure 1 was heated.

&Lt; Comparative Example 4 &

Proceed in the same manner as in Example 2, was prepared by mixing the rubber rubber prepared by mixing a platinum catalyst of 1.7 parts by weight of platinum catalyst and 4 parts by weight of crosslinking agent.

In Example 2 and Comparative Examples 3 to 4 above, the state of the rubber clay heated was confirmed and shown in Table 3 below.

<Table 3>

As shown in Table 3 above, the platinum hardener used in Example 2 of the present invention is mixed with a platinum catalyst and a crosslinking agent in an appropriate amount, so that the work rubber clay hardens well when the finished workpiece is put into an oven and heated. In addition, it provides elastic rubber to the working rubber clay, which can be used as a toy, and provides the permanent working rubber clay.

Claims (3)

In the working rubber clay which consists of an inorganic compound which can be used as a working degree;
The rubber clay is;
A gel-based silicone base provided with 60 to 80% of the total weight of the rubber clay and formed by mixing siloxane with silicon, dimethyl, methyl vinyl, and vinyl group-terminated;
It is provided with 15 to 35% by weight of the total rubber clay and made of a powder-based silica-based plasticity modifier to adjust the hardness;
It is provided with 1 to 5% by weight of the total rubber clay and made of polydimethylsiloxane system to prevent solidification in the form of an oil to prevent solidification;
It is provided with 0.1 to 1% by weight of the total rubber clay and antibacterial agent to prevent bacterial growth;
Platinum hardener is provided in 0.65 to 5% relative to the total rubber clay weight; Thermosetting actionable rubber clay, characterized in that the mixture is made. The method of claim 1,
The platinum hardener is;
A platinum catalyst prepared in an amount of 0.15 to 1.5% based on the total weight of the rubber clay;
Crosslinking agent is provided in 0.5 to 3.5% by weight of the total rubber clay; Thermosetting rubber clay capable of thermosetting, characterized in that consisting of. The method of claim 2,
The platinum catalyst is a thermosetting rubber rubber clay, characterized in that having the following structural formula.

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