KR20020026144A - Finishing Material using Ferrite Characteristics and High Energy Product Bond Magnet - Google Patents

Abstract

PURPOSE: A building finishing-material and a high-energy bond magnet utilizing ferrite characteristics are provided to improve the living environment by using the ferromagnetic characteristics of a ferrite. CONSTITUTION: A powder of the ferrite is obtained through a mechanical stabilization process(1). The powder is mixed with a plasticizer and a lubricant through a ball mill in a mixture process(2). In the mixture process(2), a resin is applied to the powder in order to increase the fluidity of the powder. After the mixture process(2), a molded product is provided. The molded product is coated with a glaze in a surface coating process(4) and is sintered by an electric furnace in a sintering process(5). The sintered product is experienced with a magnet-like element adhesion process(6).

Description

Finishing material using ferrite characteristics and high energy product bond magnets

The present invention relates to a building finishing material using ferrite, and more specifically, to a human body by constructing or applying a composite material mixed with a sintered body made of sintered ferrite powder and a synthetic resin or a paint on the interior walls, floors, ceilings and exterior walls when finishing the interior and exterior of the building. Absorption of harmful electromagnetic waves, restoration of reduced geomagnetic strength, development of comprehensive building finishing materials that transform residential spaces into creative spaces by utilizing ferrite ferromagnetic properties, and 3 to 10 MGOe that can support the weight of accessories to be attached to the interior walls of constructions or coatings of these finishing materials. The present invention relates to the development and use of high energy bond magnets at a high level.

In general, ferrite is a ferromagnetic material, which is manufactured by wet or dry method of powder, and sintered in magnetic field atmosphere and magnetized to make permanent magnets, or used in electronic parts using linear / nonlinear magnetization characteristics and Faraday effect. It is used as vibration absorbing structural material and electromagnetic wave absorber of building. The composite material developed as an electromagnetic wave absorber is used as a general electromagnetic wave absorber that does not utilize the ferromagnetic material magnetized in the permanent magnet and the reduction and recovery of geomagnetic strength.However, the absorption phenomenon of the electromagnetic wave cannot be visually confirmed. There is a limit to the commercialization to be used for. In the case of ferrite or rare earth bonded magnets for attaching papers, bond magnets having energy of about 0.5 to 2 MGOe are used, and they are mainly limited to the use for attaching papers to steel furniture, refrigerators, and some toys and office supplies. It is used.

The present invention further extends the application range of the ferrite and bond magnets as described above to improve the living space to benefit the human body by absorbing electromagnetic waves and restoring the natural geomagnetism by using the ferrite building finishing material as the interior and exterior finishing material of the building. It is possible to easily change the living space into a creative space according to personal preferences, creativity, and seasonal changes by utilizing the visual effects.In the case of bond magnets, considering the adsorption power per unit area of 300g / ㎠ or more, more than 3MGOe In order to have energy and to minimize electromagnetic influence on surrounding electronic devices, we developed tape type and disk type rare earth bond magnets with low energy of less than 10MGOe to facilitate the attachment of small parts to the building surface on which the ferrite building finishing material was constructed. Of building finishing materials and rare earth bond magnets To increase the product value to which the object of the present invention.

In order to achieve the above invention, the present invention is characterized in that the ferrite sintered body or the ferrite powder and the composite resin or paint mixed material, and a high-energy tape-type, disk-shaped bond magnet that can support the weight of the accessory.

1 is a perspective view showing the use of ferrite construction finish manufacturing process and ferrite construction finish and bond magnets

Figure 2 is a production process of tile type and plate type building finishing materials sintered ferrite powder

Figure 3 is a roll- and sheet-type building finish production process diagram of mixing ferrite powder with synthetic resin

Figure 4 is a high energy bond magnet production process that can be attached to the ferrite building finishing material

Hereinafter, described in detail by the accompanying drawings as follows.

Figure 1 is a perspective view showing the use of ferrite construction finish manufacturing representative process and ferrite construction finish and bond magnets. In the case of the ferrite sintered body, the homogeneous ferrite powder obtained by the particle size control (1), the plasticizer, the lubricant are mixed and subjected to the mixing process (2) using a ball mill or the like. Surface treatment (4) such as glaze is applied to the molded product produced through the molding process (3), and then put into an electric furnace and sintered (5). The magnetization process (6) of the geomagnetic level (≒ 0.5Gauss) is performed with a magnetizer according to the use. After completion. In the case of ferrite composite material and rare earth bond magnet, ferrite composite material is added after surface treatment such as molding process of (3) and resin coating of (4) to add fluid in order to secure fluidity during mixing process of (2). According to (6), the magnetization process is completed, and the bonded magnet is completed by magnetizing it to be a permanent magnet having high energy of 3 to 10 MGOe or more in a high magnetic field atmosphere. In the case of ferrite paint, the ferrite paint is prepared by mixing the ferrite powder during the paint production process and the appropriate coloring material and additives for the coating material. (7) is a tile-type ferrite finishing material that can be used for building exterior walls, floors, interior walls of toilets, and when used as flooring materials, areas with reduced geomagnetism in buildings can be reconstructed and restored to the natural geomagnetism level. (8) is a plate-type ferrite construction finishing material used for building interior wall and finish with paint or paint after construction. (9) is a roll-type ferrite finish material can be used for building floor finishing, such as jangpan and can be magnetized as described above to restore the geomagnetic reduction. (10) is a ferrite paint, which can be utilized for absorption of electromagnetic waves from the outside during construction on the inside and outside walls of buildings. (11) is a tape type rare earth bond magnet, which is attached to the back of exhibition props and the like so that the ferrite finish can be attached freely without nails or adhesives. (12) is a disc type bond magnet, which is characterized by easy attachment of papers and papers to the bulletin board and the inner and outer walls of the building where ferrite finishes are constructed.

Fig. 2 is a process chart of the ferrite sintered body of tile type or plate type. According to the ferrite manufacturing process, additives such as NiO and CaCO ₃ are added to the raw materials, mixed by using a ball mill and a vibration mill, and calcined to facilitate grinding after calcination to separate and remove the generated gas in advance. The temperature is lowered to produce ferrite powder of fine particle size distribution. To achieve uniform shrinkage of the product during molding, the powder is granulated and a sieve is used to control the particle size. Suitable plasticizer to compensate for plasticity and dry strength It is treated by adding and a lubricant such as stearic acid is added to compensate for the low strength and brittleness of the molded body. Tile-type or plate-type molding of ferrite is selected by compression molding, extrusion molding, etc., depending on the application, and if necessary, molding in a magnetic field so that the ferrite powder has an anisotropic arrangement in the direction of the magnetic field. In the case of the tile type, the surface of the compressed or extruded product is coated with various colors of glaze and then sintered at 900 ° C to 1400 ° C in consideration of the components and proportions contained in the ferrite powder. The sintered tiles magnetize to the geomagnetic level if necessary to retain their magnetic properties. In the case of plate type, after sintering at the above temperature range without surface treatment, magnetizing and coating if necessary.

3 is a roll or sheet ferrite building finish production process diagram. Ferrite raw material particle size control and additive mixing are the same as the above method, and roll or sheet type uses nylon 6, 12, 66, etc. as additive resin to secure fluidity during molding, and the amount of resin is maintained at 30 to 40%. Maintain the characteristics of The molding method uses a method such as T-die extrusion molding and molds at about 200 ° C. to 300 ° C., and after coating, magnetizes below the level of geomagnetism. When the coating is used on the inner wall of the building, thin film is coated with a suitable resin, and when used as a building floor finishing material such as a floor covering, the coating resin is selected and treated in consideration of the pattern print and texture of the surface. In addition to the above-described method is a method of producing a paint by mixing the ferrite powder of about 50 to 70% in the production of paint to utilize the electromagnetic wave absorption characteristics of the ferrite. In the case of paint, ferrite powder may be mixed in the paint production process and a vehicle, resin, a solvent, and an additive may be selected according to the use of the paint to produce a paint suitable for the object.

4 shows a process chart for producing bonded magnets in a rare earth magnet powder into a tape or sheet form. The raw material is an isotropic or anisotropic magnet powder such as SmCo or NdFe-based, and has a high coercive force of several μm or less to control particle size. According to the molding method, the compound is manufactured by mixing with resin such as epoxy and nylon, and powder lubricant is added to reduce molding pressure and coefficient of friction between molds, and high density is obtained by optimizing resin amount and particle size distribution. Molding can be performed by compression molding, injection molding, extrusion molding, etc., depending on the application. If necessary, the molding is performed in a magnetic field so that the ferrite powder has an anisotropic arrangement in the direction of the magnetic field. Compression molding is a molding method that presses a mixture of 80 to 90% of magnetic powder and 10 to 20% of synthetic resin to obtain a high density. Can be utilized for Injection molding uses a resin with low viscosity and good thermal reversibility, and injects the resin in an atmosphere of 200 to 300 ° C. by mixing an appropriate amount of 30 to 40% in order to secure fluidity. Extrusion molding adjusts the temperature gradient during melt heating to make fluidity, adjusts the particle size distribution to increase the filling rate, suppresses the viscosity increase by using additives such as antioxidants, and extrudes from the die to cool and solidify. The molded bond magnet is magnetized to a level of 3 to 10 MGOe through a coating to make a permanent magnet. Disc-type bond magnets can be used as a substitute for existing tacks on the inner wall of a building finished with ferrite building construction materials. Tape-type bond magnets can be processed in a tape shape by adjusting width and length, It is coated and rolled into a roll type, processed into a tape form, and can be cut and used according to the purpose.

As described above, the present invention relates to a ferromagnetic material of a ferrite, a building finishing material and a rare earth bond magnet using an electromagnetic wave absorption property, and a method of dramatically changing a living environment and a living space by using a ferrite property in combination. will be. Tile-type ferrite finishing materials can be used for building interior and exterior walls, floors, interior walls of bathrooms, and can be converted into spaces to absorb electromagnetic waves or attach accessories. It can be used as accessory attachment and electromagnetic wave absorber as above to improve living environment and change into creative living space. Ferrite paint can be used as a thick film of the thickness of the object to be painted to form a coating film to absorb electromagnetic waves, light prop attachment. Using high energy rare earth bond magnet that can support the weight of the prop on the surface where ferrite building material is applied, bond the magnet on the back of small frame, watch, souvenir, etc. The inner wall of the building can be used for small exhibitions. In addition, the bulletin board constructed as a ferrite building finishing material can display or display documents and papers with disc type small rare earth bond magnets, so that all living spaces can be improved to creative spaces, and props, toys, etc. using rare earth bond magnets It is expected to greatly increase development.

Claims (7)

By using ferromagnetic and electromagnetic wave absorbing properties of ferrite, a small amount of plasticizer and lubricant are mixed with ferrite powder to form a tile or plate type so that it can be used as an accessory parent and harmful electromagnetic wave absorber. Ferrite sintered body used as interior and exterior wall and floor finishing materials 30-40% synthetic resin and a small amount of lubricant are added to ferrite powder to form a roll or sheet, and then used as a coating material for the interior walls and floors of buildings. Ferrite Composites Used The ferrite sintered body according to claim 1, wherein after the molding is completed, the glaze may be coated and treated during the surface treatment to be used as a building interior, exterior material, and floor finishing material. The ferrite sintered body and composite material according to claim 1 or 2, wherein the magnet is magnetized to restore the living space to a natural geomagnetic level (≒ 0.5 Gauss). Ferrite material paint that is used for attaching electromagnetic wave absorber and light accessory by forming paint film on small parts of building, exterior wall and furniture by mixing ferrite powder of 50 ~ 70% in paint production process Forming and surface by mixing 30 ~ 40% synthetic resin and trace lubricant in rare earth magnet powder so that the small parts can be attached to the wall and ceiling of the building without nails, tacks, and fixing wires on the surface where the ferrite building material is constructed. After the process and the magnetization process to 3 ~ 10MGOe level, compression molding, surface by mixing about 10 ~ 20% synthetic resin and trace lubricant to tape type high energy bond magnet and rare earth magnet powder Disc-type high energy bond magnet that has been processed and magnetized to 3 ~ 10MGOe level The ferrite building finishing material produced by the method of claim 1 or 2 is applied to the surface of the building and used as an absorber of electromagnetic waves harmful to the human body, while the high-energy bond magnet produced by the method of claim 6 is used as a souvenir, Attached to the back of small items such as picture frames and ornaments, and used in various forms for decoration and decoration.