KR20210126182A - Manufacture method of lacquered ceramics and lacquered ceramics manufactured by the method - Google Patents

Abstract

The present invention relates to a method for manufacturing lacquered ceramic and a lacquered ceramic manufactured thereby. According to the present invention, the method comprises: a pottery preparation stage of preparing a secondarily fired ceramic; a polishing step of polishing the surface of the prepared ceramic with sandpaper; a lacquering step of applying lacquer to the polished ceramic; a firing step of sintering the lacquered ceramic at 150 to 170℃ for 3 to 5 hours at a low temperature; a cooling step of cooling the fired ceramic at room temperature for 20 to 30 hours; and a final firing step of low-temperature firing the cooled ceramic at 150 to 170℃ for 3 to 5 hours. Accordingly, the method provides a lacquered ceramic having excellent antibacterial, antifungal, antifungal, deodorizing, sterilizing, waterproof, moisture-proof, insulating, and far-infrared radiation effects, having excellent strength, and having good durability.

Description

Manufacturing method of lacquered porcelain and lacquered porcelain by the method

The present invention relates to a method for manufacturing lacquer porcelain and to lacquered porcelain by the method, and more particularly, to a method of producing lacquer porcelain that is excellent in antibacterial, antifungal, anti-insect, deodorizing, sterilizing, waterproof, moisture-proof, insulating and far-infrared radiation effects using lacquer. Of course, it relates to a method for manufacturing lacquer porcelain having excellent strength and durability, and to lacquer porcelain by the method.

Porcelain is a generic term for products made from clay and baked at a high temperature.

These ceramics are one of the earliest artifacts invented when humans started cultural life, and have been developed in various forms through the ages.

Porcelain refers to an object molded from clay (soil) that is glazed and baked. Usually, it undergoes processes such as molding, testimonial, drying, primary firing (unglazed), decoration, glazing, and secondary firing (chaebol grilling). manufactured.

If we classify these ceramics according to their use, we can classify them according to their use, such as soft ware or tiles used in buildings, refractories used to make metals, insulating materials used in the electrical industry, stoneware or porcelain used to make chemical products, earthenware used in sanitary facilities, water or It can be divided into stoneware used to drain sewage, porcelain used for kitchen and tableware, and electronic materials used for accessories of radios and TVs.

Korean Patent Registration No. 10-0220211 (Name of the invention: Method for manufacturing porcelain tableware using sericite), feldspar 15-20%, porcelain stone 20-25%, refined porcelain 5-10% kaolin 25-30%, clay 20-25% by weight is mixed in a weight ratio, and the first wet grinding is done to about 200 mesh, and 5-15% of sericite is mixed with the first wet-milled mixed powder in a weight ratio, and the second wet grinding is performed to about 300-350 mesh. A method for manufacturing porcelain tableware using sericite produced by de-ironizing, dehydrating, kneading, kneading, molding, and calcining as in a conventional method using a single mixed powder is described.

However, in the prior art described above, by mixing sericite, which is weak to heat, with ceramics and kaolin having high heat resistance in an appropriate ratio, it has an effect of not changing the shape of the molded porcelain even if the sericite is melted in the high-temperature firing process. This limited antibacterial and deodorizing effect is not stable and there is an unclear problem.

In addition, since sericite, a natural mineral, is pulverized and used as it is, the far-infrared radiation, antibacterial and deodorizing performance of sericite cannot be exhibited well, so the intended purpose cannot be sufficiently achieved. Various effects such as purification function could not be shown. In addition, there were problems such as low strength of the fired product and cracking when used at high temperatures.

KR 10-0220211 B1

An object of the present invention is to have excellent antibacterial, antifungal, anti-insect, deodorizing, sterilization, waterproof, moisture-proof, insulation and far-infrared radiation effects, as well as high strength and no cracks when used at high temperatures, resulting in excellent durability. And to provide a lacquered porcelain by the method.

The method for manufacturing lacquered porcelain of the present invention for achieving the above object includes a porcelain preparation step of preparing a conglomerate porcelain, a polishing step of polishing the surface of the prepared porcelain with sandpaper, and lacquering the polished porcelain. a lacquering step, a firing step of sintering the lacquered porcelain at 150 to 170° C. for 3 to 5 hours at a low temperature, a cooling step of cooling the fired porcelain at room temperature for 20 to 30 hours, and a 150- It is characterized in that it includes a final firing step of low-temperature firing at 170° C. for 3 to 5 hours.

The polishing step, the lacquering step, and the firing step are repeatedly performed 5 times, a first polishing step of polishing the surface of the prepared pottery with sandpaper, a first lacquering step of lacquering the first polished pottery; A first firing step of sintering the first lacquered ceramics at a low temperature of 150 to 170° C. for 3 to 5 hours, a second polishing step of polishing the surface of the first fired ceramics with sandpaper, and the secondly polished ceramics A second lacquering step of lacquering the porcelain, a second firing step of sintering the second lacquered ceramics at 150 to 170° C. for 3 to 5 hours at a low temperature, and a third step of polishing the surface of the secondary fired ceramics with sandpaper A secondary polishing step, a tertiary lacquering step of lacquering the tertiary polished porcelain, a tertiary firing step of sintering the tertiary lacquered porcelain at 150 to 170° C. for 3 to 5 hours at a low temperature, the third The 4th polishing step of polishing the surface of the fired ceramics with sandpaper, the 4th lacquering step of lacquering the 4th polished ceramics, and the 4th lacquered ceramics at 150-170°C for 3-5 hours at low temperature A fourth firing step of firing, a fifth polishing step of polishing the surface of the fourth fired ceramics with sandpaper, a fifth lacquering step of lacquering the fifth polished ceramics, and the fifth lacquered ceramics It is characterized in that it comprises a fifth calcination step of low-temperature calcination at 150 to 170 ° C for 3 to 5 hours.

In the ceramic preparation step, the chaebol ceramics are not glazed in whole or in part, and the polishing and lacquering steps are performed only on the unglazed portion.

It is characterized in that the primary lacquer and secondary lacquer are raw lacquer, and the tertiary lacquer, fourth lacquer and fifth lacquer are refined lacquer.

And the lacquered porcelain according to the present invention is characterized in that it is manufactured by the above method.

According to the present invention, antibacterial, anti-fungal, anti-insect, deodorizing, sterilizing, waterproof, moisture-proof, insulating and far-infrared radiation effects are excellent, and strength is also excellent, so that it is possible to provide a durable lacquered porcelain.

1 and 2 are flowcharts showing the manufacturing process of lacquer porcelain according to the present invention.

Hereinafter, the present invention will be described in detail.

Lacquer porcelain according to the present invention has excellent antibacterial and antifungal properties, deodorization, sterilization, waterproofing, moisture-proof and far-infrared radiation effects, as well as excellent strength and durability by lacquering all or part of the porcelain. It is characterized by

As shown in FIG. 1, the method for manufacturing lacquered porcelain includes a porcelain preparation step of preparing a conglomerate porcelain, a polishing step of polishing the surface of the prepared porcelain with sandpaper, a lacquering step of lacquering the polished porcelain, and , a firing step of sintering the lacquered porcelain at a low temperature of 150 to 170° C. for 3 to 5 hours, a cooling step of cooling the fired porcelain at room temperature for 20 to 30 hours, and a cooling step of the cooled ceramics at 150 to 170° C. 3 It is characterized in that it includes a final firing step of firing at a low temperature for ~5 hours.

In addition, the polishing step, the lacquering step, and the firing step are repeated 5 times. As shown in FIG. 2 , the first polishing step of polishing the surface of the prepared pottery with sandpaper, A tea lacquering step, a first firing step of sintering the first lacquered ceramics at 150 to 170° C. for 3 to 5 hours at a low temperature, and a second polishing step of polishing the surface of the first fired ceramics with sandpaper; A secondary lacquering step of lacquering the secondary polished porcelain, a secondary firing step of sintering the secondary lacquered porcelain at 150 to 170° C. for 3 to 5 hours at a low temperature, and The third polishing step of polishing with sandpaper, the third lacquering step of lacquering the tertiary polished porcelain, and the tertiary firing step of sintering the tertiary lacquered porcelain at 150 to 170°C for 3 to 5 hours at low temperature and a fourth polishing step of polishing the surface of the tertiary fired ceramics with sandpaper, a fourth lacquering step of lacquering the fourth polished ceramics, and heating the fourth lacquered ceramics at 150 to 170°C. A fourth firing step of firing at low temperature for 3-5 hours, a fifth polishing step of polishing the surface of the fourth fired ceramics with sandpaper, a fifth lacquering step of lacquering the fifth polished ceramics; It is characterized in that it includes a fifth firing step of firing the fifth lacquered porcelain at a low temperature of 150 to 170° C. for 3 to 5 hours.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 2 .

conglomerate Pottery preparation steps to prepare pottery

First, prepare the chaebol pottery. That is, ceramics are molded using a base material, primed at 850 to 1,050 ° C for 10 to 12 hours, and then prepared by chaebols at 1,230 to 1,250 ° C for 10 to 14 hours.

In this case, a glazing process of applying a glaze to the surface of the porcelain after the priming may be added. However, in the present invention, since the lacquer porcelain is manufactured by lacquering the portion that is not coated with the glaze, the glazing process may be omitted. In addition, even if the glazing process is additionally included, the glaze is applied only to a part of the roughed ceramic surface, and the glaze is not applied to the remaining part. Since this lubrication process follows a conventionally known method, a detailed description thereof will be omitted.

Hereinafter, it is revealed that the polishing and lacquering process of each step is performed only on the non-glazed side of the pottery.

The surface of the prepared porcelain with sandpaper 1st grinding step

Next, the surface of the prepared porcelain, that is, the surface to which the glaze is not applied is polished by sandpaper. At this time, it is preferable that the sandpaper is about #180-200.

The first lacquering step of lacquering the first polished ceramics

Then, lacquer is applied to the surface of the first polished ceramics. In this case, the lacquer refers to raw lacquer, and raw lacquer may be used alone or diluted in turpentine. The method for applying the lacquer is not limited, and it is sufficient to properly apply the lacquer to the surface of the ceramics using a brush or the like. At this time, the application amount is not limited.

The raw lacquer is a milky white sap collected from the lacquer tree, and is formed in a mesh structure like a fibrous tissue, so it has excellent durability and is strong against chemicals such as acids, alkalis, alcohols, and salts. In addition, when lacquer is used, it is not easily peeled off due to its excellent robustness, has strong waterproof and heat dissipation, and has excellent antibacterial, antifungal, antibacterial, deodorizing and sterilizing properties, as well as excellent far-infrared radiation effect. Therefore, when applied to ceramics, the antibacterial, antifungal, anti-insect, deodorizing, sterilizing, and antiseptic performance of the ceramics are improved, while waterproofing and heat dissipation are improved.

The lacquer coated as described above is absorbed into the ceramics to make the tissue dense, improving waterproofing power, as well as improving antibacterial, antifungal, antibacterial, deodorizing, sterilizing, and the like.

the first lacquered Ceramics at 150-170℃ for 3-5 hours low temperature calcined 1st firing step

And by firing the first lacquered porcelain at a low temperature of 150 to 170° C. for 3 to 5 hours, the hardening strength is increased.

In general, it is common to dry in a humid environment after lacquering, but sufficient hardening strength cannot be ensured only by drying, so that durability is not good. Therefore, in the present invention, the curing strength is improved through the low-temperature sintering, and cracks do not occur even when used at a high temperature.

The surface of the first fired ceramics with sandpaper 2nd polishing step

After the low-temperature firing is completed, it is cooled to room temperature and the surface is secondarily polished with sandpaper. At this time, the sandpaper is preferably #220, but is not limited thereto.

Secondary lacquering step of applying lacquer to the secondly polished ceramics

And in the same way as the primary lacquer, lacquer is applied to the secondary polished ceramics. At this time, raw lacquer is applied as it is, or diluted with turpentine and applied.

the second lacquered Ceramics at 150-170℃ for 3-5 hours low temperature calcined Second firing step

Next, by firing the secondary lacquered ceramics at 150 to 170° C. for 3 to 5 hours at a low temperature, the hardening strength is increased.

The surface of the secondary fired ceramics with sandpaper 3rd polishing step

After the low-temperature firing is completed, it is cooled to room temperature and the surface is again polished for the third time with sandpaper. At this time, the sandpaper is preferably #400, but is not limited thereto.

The tertiary lacquering step of lacquering the tertiary polished ceramics

Next, lacquer is applied to the tertiary polished ceramics. In this case, it is more preferable to use purified lacquer, not raw lacquer, as the lacquer. And the purified lacquer can be applied as it is, or diluted with turpentine and applied.

The purified lacquer is prepared by removing foreign substances and moisture contained in raw urushi, for example, removing impurities by using a filter or centrifugal separator, and heating and stirring at 50-80° C. for 3 to 24 hours to remove moisture. can do. At this time, since the purification method of raw urushi is well known in the field to which this technology belongs, a detailed description thereof will be omitted, and it is natural that various known methods may be applied.

the third lacquered Ceramics at 150-170℃ for 3-5 hours low temperature calcined 3rd firing step

Next, by sintering the tertiary lacquered ceramics at 150 to 170° C. for 3 to 5 hours at a low temperature, the hardening strength is increased.

The surface of the tertiary fired ceramics with sandpaper 4th polishing step

Then, it is cooled at room temperature and the surface is again polished 4 times with sandpaper. At this time, the sandpaper is preferably #600.

The 4th lacquering step of applying lacquer to the 4th polished ceramics

Lacquer again on the fourth polished porcelain. The 4th lacquer uses purified lacquer in the same way as the 3rd lacquer, and it can be applied as it is or diluted with turpentine.

the 4th lacquered Ceramics at 150-170℃ for 3-5 hours low temperature calcined 4th firing step

Then, the fourth lacquered porcelain is fired at a low temperature of 150 to 170° C. for 3 to 5 hours to increase the hardening strength.

The surface of the fourth fired ceramics with sandpaper 5th polishing step

Then, it is cooled at room temperature and the surface is again polished 5 times with sandpaper. At this time, the sandpaper is preferably #800.

5th lacquering step of lacquering the 5th polished ceramics

Then, lacquer is applied to the 5th polished porcelain. In this case, the lacquer uses purified lacquer in the same way as the third, and it can be applied as it is, or diluted with turpentine and applied.

5th above lacquered Ceramics at 150-170℃ for 3-5 hours low temperature calcined 5th firing stage

Next, the 5th lacquered porcelain is fired at a low temperature of 150 to 170° C. for 3 to 5 hours to increase the hardening strength.

A cooling step of cooling the fired ceramics for 20 to 30 hours

Then, the 5th fired ceramics are cooled at room temperature for 20 to 30 hours.

The cooled porcelain is heated to 150-170° C. for 3-5 hours. low temperature calcined Final firing stage

And the final low temperature firing at 150 ~ 170 ℃ for 3 ~ 5 hours to increase the curing strength.

The reason for repeating polishing, lacquering, and firing five times as described above in the present invention is that it is difficult to secure sufficient strength to the required degree when polishing, lacquering, and firing once, as well as a problem of high-temperature cracking. This is because properties such as waterproof, moisture-proof, antibacterial, anti-insect, and anti-fungal are not sufficiently secured.

As described above, the lacquer porcelain of the present invention prepared as described above has advantages in that it has excellent strength and has no cracks when used at high temperatures and thus has excellent durability.

In addition, it has excellent properties such as waterproof, moisture-proof, antibacterial, anti-insect, anti-fungal, and insulation, and has excellent far-infrared radiation effect. Various fields such as stoneware and porcelain used to make insulating materials, chemical products, earthenware used for sanitary facilities, stoneware used to drain water or sewage, porcelain used for kitchen and tableware, and electronic materials used for accessories of radios and TVs It has the advantage of being able to use it.

On the other hand, raw lacquer and purified lacquer used in the first to fifth lacquer lacquer steps can be diluted with turpentine and used, but this is not limited thereto. In addition, since the purified lacquer may be in a powder state, it is natural to mix it with turpentine and use it in a powder state.

In addition, in order to further enhance the antibacterial, antiseptic and antifungal functions of the lacquer porcelain according to the present invention, 10 to 20 parts by weight of aloes extract may be additionally mixed with 100 parts by weight of the raw or purified lacquer. Raw lacquer or purified lacquer mixed with such aloes extract may be used in any one or more stages of the first to fifth lacquer lacquer stages, and may be applied in all five stages. Most preferably, it is applied in the 3rd to 5th lacquer stages to lower the manufacturing cost and to fully demonstrate the efficacy of aloes.

The extract of alopecia means that ethanol is added to alopecia in a weight ratio of 1:4-6, extracted at 20-30° C. for 60-80 hours, ethanol, an extraction solvent, is removed therefrom, and then pulverized to 200-300 mesh, These extracts of alopecia are not only excellent in antibacterial, antiseptic, and antifungal effects, but also impart various beneficial effects to the human body due to their unique scent. Here, the method for removing the ethanol is not particularly limited as long as it is a method known in the art, and methods such as reduced pressure, distillation, reflux, and drying may be used for example. However, it is preferable that the ethanol is removed at 55 to 60° C. This is because, when the ethanol is removed at a high temperature, the alopecia extract may be burned under the influence of the alopecia resin.

Therefore, the lacquered porcelain according to the present invention has excellent antibacterial, antifungal, anti-insect, deodorizing, sterilizing, waterproof, moisture-proof, insulating and far-infrared radiation effects, as well as excellent strength and durability. possible.

As mentioned above, although the present invention has been described in detail using preferred embodiments, the scope of the present invention is not limited to specific embodiments, and should be interpreted by the appended claims. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

Claims (5)

The pottery preparation stage of preparing the chaebol pottery,
a polishing step of polishing the surface of the prepared porcelain with sandpaper;
A lacquering step of applying lacquer to the polished ceramics;
A firing step of sintering the lacquered porcelain at 150 to 170° C. for 3 to 5 hours at a low temperature;
a cooling step of cooling the fired ceramics at room temperature for 20 to 30 hours;
A method of manufacturing lacquer porcelain, comprising a final firing step of sintering the cooled porcelain at a low temperature of 150 to 170° C. for 3 to 5 hours.
According to claim 1,
The polishing step, the lacquering step, and the firing step are repeated five times,
a first polishing step of polishing the surface of the prepared porcelain with sandpaper;
A first lacquering step of lacquering the first polished ceramics;
A first firing step of firing the first lacquered porcelain at 150~170℃ for 3~5 hours at low temperature;
a second polishing step of polishing the surface of the first fired ceramics with sandpaper;
a second lacquering step of applying lacquer to the secondly polished ceramics;
A secondary firing step of firing the secondary lacquered ceramics at 150 to 170° C. for 3 to 5 hours at a low temperature;
a third polishing step of polishing the surface of the secondary fired ceramics with sandpaper;
a tertiary lacquering step of lacquering the tertiary polished ceramics;
a tertiary firing step of sintering the tertiary lacquered porcelain at a low temperature of 150 to 170° C. for 3 to 5 hours;
a fourth polishing step of polishing the surface of the tertiary fired ceramics with sandpaper;
a fourth lacquering step of applying lacquer to the fourth polished ceramics;
A fourth firing step of firing the fourth lacquered porcelain at a low temperature of 150 to 170° C. for 3 to 5 hours;
a fifth polishing step of polishing the surface of the fourth fired ceramics with sandpaper;
A fifth lacquering step of lacquering the fifth polished ceramics;
A method for manufacturing lacquered porcelain, comprising a fifth sintering step of sintering the fifth lacquered porcelain at a low temperature of 150 to 170° C. for 3 to 5 hours.
According to claim 1,
In the pottery preparation step,
The chaebol ceramics are not glazed in whole or in part,
The method of manufacturing lacquer porcelain, characterized in that the polishing and lacquering are performed only on the portion that is not glazed.
3. The method of claim 2,
The primary lacquer and the secondary lacquer are to apply raw lacquer,
The tertiary lacquer, the fourth lacquer and the fifth lacquer are the manufacturing method of lacquer porcelain, characterized in that refined lacquer is applied.
Lacquer porcelain, characterized in that produced by the method of any one of claims 1 to 4.

Images