WO2012064008A1

WO2012064008A1 - Method for manufacturing a ceramic plastic ceramics composition to be used in coating a metal surface and a concrete surface

Info

Publication number: WO2012064008A1
Application number: PCT/KR2011/005285
Authority: WO
Inventors: 장인호
Original assignee: 주식회사 한국스틸코트나노
Priority date: 2010-11-11
Filing date: 2011-07-19
Publication date: 2012-05-18
Also published as: KR101016172B1

Abstract

The present invention relates to a method for manufacturing a ceramic plastic ceramics (CPC) composition to be used in coating a metal surface. More particularly, the present invention comprises the steps of: preparing shell powder; adding fine ceramic powder and modified polyethylene powder to the shell powder; pulverizing the shell powder, the fine ceramic powder and the modified polyethylene powder to thereby prepare a composition having improved properties; and coating the surface of a steel pipe and concrete with the composition using a thermal spray-coating process. According to the present invention, shells buried underground or buried in the sea are pulverized, and ceramic powder and polyethylene powder is then mixed therewith to be used with a thermal spray-coating apparatus, thereby increasing coating efficiency, recycling the shells to prevent environmental contamination and reduce waste disposal costs, and preventing a short-circuit from occurring on an iron surface since melt-coating is possible regardless of a corrosion layer being formed on the iron surface.

Description

Method for producing a composition of ceramic plastic ceramics used for coating metal surfaces and concrete surfaces

The present invention relates to a method for preparing a composition of ceramic plastic ceramics (CPC) used for coating a metal surface, and more specifically, a fine ceramic powder is added to the shell powder as a base material, and modified polyethylene powder. Ceramic powder ceramics used for coating metal surfaces and concrete surfaces to be coated with steel pipes and concrete surfaces using a thermal spray coating device to produce improved compositions by granulating shell powder, modified polyethylene powder and fine ceramic powder It relates to a method for producing a composition.

At present, metal products are manufactured and used in various forms such as pipes, plates, and rods. Since most of these metal products are used while exposed to outside air, they are easily discolored and corroded according to external conditions such as moisture. Corrosion resistance is improved by making the material itself corrosion resistant like stainless steel, or by coating a coating layer to have corrosion resistance such as painting, plating and resin coating on the surface of metal products.

However, stainless steel is expensive and difficult to apply to large-scale metal products. In the case of the painting method, the construction is easy, but the durability is weak and the service life is limited, so continuous maintenance is required.

The metal plating method has good durability, but because it is the same metal series, it has limitations on corrosion resistance, weather resistance, surface color expression effect, and costly defects, and resin coating method has good corrosion protection effect, but it is easily broken due to binding property. There was an issue peeled off

Invented in order to solve the above problems, it is not a method of simply adhering to the coating material by a simple powder thermal spray coating, it is a principle of penetration coating into the numerous air bubbles formed on the surface of iron or concrete, patent application No. 10-1999-0044183 describes thermally spraying modified polyethylene after applying an adhesive to a coating, which is an inefficient and thermally deformable or organic adhesive that requires pretreatment such as shot or surface grinding before coating. Since thermal carbonization is a problem, the thermal spray coating has a problem as described above.

In addition, Patent Application No. 10-2010-0038751 is a method of coating by using a simple shell crushing and adhesive, which is a disadvantage that the surface pre-treatment to the coating before the actual coating and the risk of adhesive stripping after coating, cracks, cracks due to UV exposure, There is a problem that may raise concerns about desertion.

In order to improve the above problems, the shell is currently being embedded to develop a more efficient composition.

Currently, about 900,000 tons of fish and shellfish that are discarded in Korea are reported nationwide, and about 10% of them are recycled in various fields as calcium fertilizer, pharmaceutical raw materials, building materials, and cosmetic raw materials.

The remaining 80% of the shells are left in various places or buried in landfills, and simple ocean dumping is common.

The resulting environmental damage is beyond imagination and causes serious sea pollution.

In Korea, where the most shells occur are Tongyeong and Geoje, especially in Oyster Straits in Tongyeong, some of the shells are reclaimed every year with government subsidies for the disposal of oyster shells.

Therefore, by using a shell that is being buried to make powder by modifying the existing ceramic and polyethylene to solve as follows.

The present invention is to solve the above problems, and collected and crushed shells that are buried nationwide causing environmental pollution, and powdered fine ceramics and modified polyethylene, EVA (ethylene vinyl acetate) and PVA (poly) vinyl alcohol), polymer chips and water are mixed to 50μm, and then granulated to 100 mesh (0.149mm) size, and coated on all steel structures and pipes using a thermal spray coating device. In particular, it is intended to waterproof coating concrete used for waterproofing and other purposes.

The present invention for achieving the above object is a hydrochloric acid disinfection step for removing contaminants from the smell and microorganisms in the shell primarily to produce a CPC powder, and the shell and fine ceramics and the hydrochloric acid disinfection step A drying and firing step of drying and sintering the polyethylene for pulverization, a first crushing step formed to remove secondary foreign materials of the shells subjected to the drying and firing step, and pulverizing fine ceramic and modified polyethylene, respectively; 2nd precision vacuum grinding step for precise grinding of the shell and fine ceramic and modified polyethylene which have been pulverized, and the shell powder, fine ceramic powder and modified polyethylene powder which have undergone the second precision vacuum grinding step are EVA (ethylene vinylacetate). Powder and polyvinyl alcohol (PVA) are mixed and dried in the first mixing and drying step, and the first mixing Secondary mixing step in which water is dispersed in the CPC powder, which has been stirred and dried, and mixed with the polymer chip, and vacuum mixing step for atomizing the CPC powder, which has undergone the above steps, into particles of 50 μm into 100 mesh (0.149 mm). Characterized in that configured to include.

In addition, the shell of the hydrochloric acid disinfection step is contained in the CPC powder 40% by weight, the disinfection process is repeated for three days, characterized in that the hydrochloric acid is sprayed by the spray method to be disinfected.

In addition, the shell is dried in the drying and calcining step, and the fine ceramic having a content of 25% by weight and the modified polyethylene having a content of 25% by weight are calcined to be pulverized, respectively.

In addition, the shell and fine ceramic and the modified polyethylene of the second precision vacuum grinding step is pulverized in a vacuum state, characterized in that the particle size is pulverized into particles of 50μm.

In addition, the shell powder, the fine ceramic powder and the modified polyethylene powder of the first mixing and agitation and drying step are coated with EVA and PVA, characterized in that the dried.

In addition, the EVA, PVA, water and the polymer chip in the first mixing and drying step and the second mixing step are characterized by adding a 10% by weight of the CPC powder.

In addition, in using the CPC powder passed through each step as a raw material of the thermal spray coating apparatus, when spraying 100 mesh (0.149mm) of the particle heating spraying is broken into 50μm particles due to the difference in thermal shock and air pressure do.

In addition, the polymer chip is to form a ring between the particles contained in the CPC, and to form a high strength to permanently prevent cracks due to ultraviolet rays, and to penetrate and coated on the steel pipe and concrete surface to prevent the desertion and cracking of the particles It features.

The present invention provides the following effects.

The present invention is used in the thermal spray coating apparatus by mixing the fine ceramic powder and modified polyethylene powder by powdering the shell to be buried inland or dumped into the ocean, recycling the embedded shell while improving the efficiency of the coating to prevent environmental pollution And reduce the disposal cost.

In addition, the thermal spraying method for all steel structures or all pipe types in the form of shell, fine ceramic and modified polyethylene powder mixed with EVA (ethylene vinyl acetate), PVA (poly vinyl alcohol), polymer chip and water. It is coated by using to realize corrosion resistance, heat resistance, gas resistance and chemical resistance, and when applied to the area where moisture or corrosive gas is present, its characteristics and color remain unchanged and can be maintained for a long time.

In addition, the polymer chip contained in the CPC serves to form the surface of the coating layer with higher strength, which serves to form a ring with each other.

In addition, the ring role of the polymer chip permanently prevents cracks caused by ultraviolet rays, and provides an effect of reinforcing the formation of cracks and cracks of particles coated on the iron or concrete surface by penetration.

In addition, since spray coating is possible regardless of the corrosion layer generated on the surface of the metal, there is an effect of eliminating the pretreatment process of the surface of the metal. That is, it provides an effect that can be applied to the surface coatings and concrete structures such as water pipes, gas pipes, coating, steel pipe piles, oil pipes.

In addition, due to the omission of the pretreatment work process it is easy to work on-site coating provides an effect that can be coated while moving regardless of the region, zone when using a mobile thermal spray.

1 is a block diagram of a method for producing a composition of ceramic plastic ceramics used for coating the metal surface and concrete surface of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

The present invention is a composition of ceramic plastic ceramics (CPC), as shown in Figure 1, consisting of various shells, fine ceramics and modified polyethylene, each of the components is 40% by weight shell, 25% by weight fine ceramic, modified It is composed of 25% polyethylene and other 10% by weight of EVA (ethylene vinyl acetate), polymer chips, water and PVA (poly vinyl alcohol).

Ceramic plastic ceramics (CPC) consisting of the above components are used as raw materials for thermal spray coating apparatus.

In the thermal spray coating apparatus, the main raw material of the CPC is composed of each step of the manufacturing method as follows, the prepared CPC is used as an embodiment of the thermal spray coating apparatus.

Each step for preparing the CPC powder will be described in detail with reference to Figure 1 the manufacturing method through the components as follows.

As shown in FIG. 1, the shell, the fine ceramic, and the modified polyethylene that have undergone hydrochloric acid sterilization are dried and calcined, the first milling step, the second precision vacuum milling step, the first mixed stirring and drying step, respectively. And, through the secondary mixing step, and vacuum mixing step to prepare a CPC (Ceramic Plastic Ceramics) powder.

The shell subjected to the hydrochloric acid sterilization step to prepare the CPC is added to 40% by weight of the CPC raw material, and is primarily made of a spray disinfection step to remove foreign substances in the shell.

The disinfection process is carried out for three days, to remove the smell of shells and contaminants from the microorganisms.

After the first disinfection of the hydrochloric acid disinfection step, the shell is calcined through a drying and firing step for the pulverization process to granulate the weight of the shell, the fine ceramic 25% of the CPC and 25% of the modified polyethylene weight 25%.

The dried and calcined shells, fine ceramics and modified polyethylenes are made of primary grinding separately, and foreign matters are separated secondarily in removing contaminants when primary shells are crushed.

Each shell, fine ceramic, and modified polyethylene in which the primary grinding is completed are subjected to a second precision vacuum grinding step, and when the second precision grinding is performed, each powder particle size is pulverized into particles having a size of 50 μm.

The powder formed of the particles of 50 μm is precisely ground in a vacuum state.

CPC formed as a complete powder with the particles of 50μm is subjected to the first mixing and agitation and drying step, the shell powder of the CPC powder powdered into particles of 50μm through a mill in the second precision vacuum grinding step, and fine ceramic powder The modified polyethylene powder is mixed with EVA (ethylene vinyl acetate) powder and polyvinyl alcohol (PVA), dried, and the shell powder, fine ceramic powder and modified polyethylene powder contained in the CPC powder are coated with EVA powder and PVA. will be.

The first mixed stirred and dried CPC powder is subjected to a second mixing step, and water is dispersed in the first mixed CPC powder and mixed with the polymer chip.

The polymer chip can be prevented semi-permanently to prevent cracks caused by ultraviolet rays, and will be described in more detail to reinforce the particles coated with the iron or concrete surface to avoid the deserting and cracking.

EVA, PVA, polymer chips, and water constituted in the first mixing step and the second mixing step are contained in the CPC powder in a proportion of 10% by weight.

The primary and secondary mixed CPC powder has a particle size of 50 μm, and is subjected to a vacuum mixing step to atomize it into particles of 100 mesh (0.149 mm).

The CPC powder granulated to 100 mesh (0.149 mm) in the vacuum mixer is stored in the powder container of the thermal spray coating apparatus or stored in an external container.

Accordingly, the powder having a particle size of 100 mesh (0.149 mm) is used as a main raw material of the thermal spray coating apparatus, and 100 mesh (0.149 mm) particles are broken and sprayed by the difference in thermal shock and air pressure during thermal spray coating. In this case, particles of 100 mesh (0.149 mm) are deformed into particles of 50 µm and sprayed by the spraying process.

Accordingly, the CPC powder is thermally sprayed together and coated on a metal surface or a concrete surface.

Claims

Hydrochloric acid disinfection step to remove contaminants from odor and contaminants from the shell to prepare CPC powder;

A drying and firing step of drying and calcining the shell, the fine ceramic and the modified polyethylene which have undergone the hydrochloric acid disinfection step;

A primary crushing step formed to remove the secondary foreign matters of the shells subjected to the drying and firing steps, and to grind the fine ceramic and the modified polyethylene, respectively;

A second precision vacuum grinding step for precisely grinding the shell, the fine ceramic and the modified polyethylene which have undergone the first grinding step;

A first mixing stirring and drying step in which the shell powder, the fine ceramic powder, and the modified polyethylene powder which have undergone the second precision vacuum grinding step are mixed with EVA (ethylene vinyl acetate) powder and PVA (poly vinyl alcohol), and dried;

A second mixing step of dispersing water in the CPC powder which has undergone the first mixing stirring and drying step and mixing it with the polymer chip;

A vacuum mixing step of converting the CPC powder passed through each step into particles of 50 μm into 100 mesh (0.149 mm);

Method for producing a composition of ceramic plastic ceramics used for metal surface and concrete surface coating, characterized in that comprising a.
The method of claim 1,

The shell of the hydrochloric acid disinfection step contains 40% by weight in the CPC powder, the disinfection process is repeated for 3 days, the ceramic plastic used for coating the metal surface and concrete surface, characterized in that the hydrochloric acid is sprayed and disinfected by a spray method Method for producing a composition of ceramics.
The method of claim 1,

In the drying and firing step, the shell is dried, and the ceramic used for coating the metal surface and the concrete surface, characterized in that the fine ceramic having a content of 25% by weight and the modified polyethylene having a content of 25% by weight is fired for pulverization. Method for producing a composition of plastic ceramics.
The method of claim 1,

The shell and fine ceramic and the modified polyethylene of the second precision vacuum grinding step are pulverized in a vacuum state, the composition of the ceramic plastic ceramics used for coating the metal surface and concrete surface, characterized in that the particle size is pulverized to 50μm particles Way.
The method of claim 1,

The shell powder, the fine ceramic powder and the modified polyethylene powder in the first mixing and drying step are coated with EVA and PVA, and dried, and the method of manufacturing a composition of ceramic plastic ceramics used for coating metal surfaces and concrete surfaces. .
The method of claim 1,

EVA, PVA, water and polymer chips in the first mixing and drying step and the second mixing step are added in a content of 10% by weight of the CPC powder of the ceramic plastic ceramics used for metal surface and concrete surface coating Method for preparing the composition.
The method of claim 1,

In using the CPC powder, which has undergone the above steps, as a raw material of the thermal spray coating apparatus, the surface of the metal and the concrete are characterized in that 100 mesh (0.149mm) particles are broken and sprayed into 50μm particles by heat and air during thermal spraying. A method for producing a composition of ceramic plastic ceramics used for coating.
The method of claim 1,

The polymer chip forms a ring between particles contained in the CPC, semi-permanently prevents the problem of cracking caused by ultraviolet rays by forming a high strength, and penetrates the steel pipe and concrete surface to prevent the desertion and cracking of the particles A method for producing a composition of ceramic plastic ceramics used for coating metal surfaces and concrete surfaces.