KR20140001349A - Method for producing metal coated glass fiber - Google Patents
Method for producing metal coated glass fiber Download PDFInfo
- Publication number
- KR20140001349A KR20140001349A KR1020120068595A KR20120068595A KR20140001349A KR 20140001349 A KR20140001349 A KR 20140001349A KR 1020120068595 A KR1020120068595 A KR 1020120068595A KR 20120068595 A KR20120068595 A KR 20120068595A KR 20140001349 A KR20140001349 A KR 20140001349A
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- Prior art keywords
- glass fiber
- metal
- coating
- producing
- coated glass
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/011—Manufacture of glass fibres or filaments starting from a liquid phase reaction process, e.g. through a gel phase
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/106—Single coatings
- C03C25/1061—Inorganic coatings
- C03C25/1063—Metals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Fibers (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
Abstract
The present invention relates to a method for manufacturing metal-coated glass fibers, using a low melting glass fiber and bushings made of Inconel or stainless steel to reduce the manufacturing cost, metal coating that can increase the productivity by using a melt coating It provides a method for producing glass fibers.
Description
The present invention relates to a method of manufacturing metal-coated glass fibers, and more particularly, low-melting-point glass fibers and bushings made of Inconel or stainless steel can be used to reduce manufacturing costs, and to increase productivity using melt coating. It relates to a method for producing a metal coated glass fiber.
Industrial inorganic fibers, including glass fibers or basalt fibers, are used as basic reinforcements for industrial materials replacing metals, wood, etc., and are used as main raw materials for making glass fiber reinforced plastics by mixing with thermoplastic and thermosetting resins. For example, when injection molding or extrusion molding is carried out by injection molding or extrusion molding by adding an appropriate amount of glass fiber or the like, the dimensional stability of the injection molding or the extruded product is excellent and the strength is improved compared with the case where only the resin is used.
However, since the inorganic fibers are electrically insulating, they cannot be used where antistatic or electromagnetic shielding properties are required, and their application parts have been much limited. For example, when manufacturing a plane or automobile parts made of metal, it is effective for electromagnetic shielding, but the weight is heavy, there are various problems. On the other hand, when making parts using glass fibers (non-conductors), it is advantageous in terms of weight reduction, but electromagnetic wave shielding is not made, causing malfunction of the device.
In this regard, in order to manufacture an antistatic or electromagnetic interference (EMI) shielding material, a method of imparting conductivity to the resin itself, a method of adding a piece of metal or a metal wire to the resin, and the like have been used. In addition, as disclosed in Korean Patent Laid-Open Publication No. 2010-11171, a method of manufacturing an electromagnetic wave shielding fiber by depositing a metal atom in a yarn in a vacuum chamber is disclosed.
On the other hand, bushings made of platinum (Pt) and rhodium (Rh) are generally used for glass fiber production. Platinum / rhodium bushings are expensive and expensive to manufacture.
In addition, a method of coating the surface of the fiber with a metal includes chemical vapor deposition (CVD), vacuum deposition, sputtering or impregnation. Coating by chemical vapor deposition, vacuum deposition or sputtering is possible to coat one by one of the fiber filament, but the coating speed is slow and expensive equipment is required, it is difficult to mass production, it is uneconomical. And the impregnation method is difficult to uniformly coat each of the filaments.
It is an object of the present invention to provide a method for producing a metal coated glass fiber that can be usefully used as an electromagnetic wave shielding fiber.
Another object of the present invention is to provide a method for producing metal-coated glass fibers that can reduce manufacturing costs and increase productivity.
The present invention to achieve the above object, spinning step of spinning a glass fiber; And it provides a method for producing a metal-coated glass fiber comprising a coating step of coating the spun glass fiber with a metal.
In the manufacturing method of the present invention, it is preferable to use a bushing made of inconel or stainless steel in the spinning step, thereby remarkably reducing the manufacturing cost of the glass fiber.
In the present invention, the glass fiber is preferably a low-melting glass fiber having a glass transition temperature of 750 DEG C or lower, and the manufacturing cost can be drastically reduced by using low-melting glass fiber at low cost.
In the present invention, the glass fiber preferably has a tensile strength of 25 g or more and a diameter of 20 탆 or more, which can remarkably increase the productivity of the metal-coated glass fiber.
In the present invention, as the metal for coating glass fiber, one or more alloys selected from aluminum (Al), zinc (Zn) and lead (Pb) can be used.
In the present invention, the coating is preferably a molten coating using a molten metal, and in particular, it is preferable to coat the glass fiber by passing the glass fiber in the molten metal contained in the container. At this time, it is preferable to use a container made of boron nitride (BN) or graphite (graphite).
In the present invention, the glass fiber can be produced at low cost by using a bushing made of Inconel metal or stainless steel (SUS).
In addition, in the present invention, by using the low-melting glass fiber (one of the plate glass) it can significantly reduce the manufacturing cost.
In addition, in the present invention, the productivity of the metal-coated glass fiber can be significantly increased by using a method of melt coating a metal such as aluminum on the glass fiber.
1 is a cross-sectional view of a bushing according to an embodiment of the invention.
2 is a view of a molten coating process according to one embodiment of the present invention.
Hereinafter, the present invention will be described in detail.
The present invention relates to a method for producing a metal-coated glass fiber, the manufacturing method according to the invention is a spinning step of spinning a glass fiber; And a coating step of coating the spun glass fibers with a metal.
Generally, the production of glass fibers is accomplished by melting a mixture of silica and minerals containing specific component oxides, followed by a spinning process, referred to as fiberization. Viscosities of glass melts suitable for the fiberization of continuous fibers are suitably between 100 and 1000 poise.
The glass melt can be drawn into a filament after passing through a nozzle orifice in the bottom of a bushing made of metal. And then cooled with water to be sprayed. The glass fiber filaments are subjected to a silane surface treatment (sizing) for the purpose of reducing surface friction and static electricity, or for the purpose of imparting a coupling agent for a future composite manufacturing process, then wound on a bobbin, .
In the spinning step, it is preferable to use a bushing made of inconel or stainless steel, which can drastically reduce the manufacturing cost of the glass fiber.
A bushing is needed to wind a glass melt flowing through a nozzle in a hot glass melt state to a rotating machine. As a material of the bushing, generally, a metal which does not react even at a high temperature and does not melt itself is used. In particular, since the strength should be maintained even at a high temperature without reacting with oxygen in the air, And rhodium (Rh) alloy, the weight ratio of Pt: Rh being about 90:10 to 80:20 is generally used. In particular, Pt / Rh bushing is essential for the production of E-glass glass fiber. However, the price of 1 kg of platinum / rhodium is very high at 80 million won.
In the present invention, by replacing the expensive Pt / Rh bushing with a bushing made of inconel or stainless steel, the manufacturing cost of the glass fiber can be drastically reduced. The price of 1 kg of inconel or stainless steel is about 10,000 won, which is very low compared to platinum / rhodium bushings.
Inconel is a Ni-Cr-Fe-based alloy that has been released by Henry wiggins in the UK, specifically 15% chromium, 6-7% iron, 2.5% titanium, 1% or less, mainly nickel. It is a heat resistant alloy containing aluminum, manganese and silicon. It is good in heat resistance and does not oxidize even in an oxidizing air stream of 900 占 폚 or more, and is not immersed in an atmosphere containing sulfur. Many properties such as elongation, tensile strength and yield point do not change much to about 600 ° C. They are excellent in mechanical properties and do not corrode organic or salt solutions. Inconel X, to which 1% of niobium is added, is representative of the above-mentioned composition.
Stainless steel (SUS) is a generic term for corrosion resistant steels intended to improve the lack of corrosion resistance, the greatest deficiency of iron. Today, ferritic stainless steels and iron-nickel-chromium austenitic stainless steels are widely used.
The reason why the bushings made of Inconel or stainless steel can be used in place of the expensive Pt / Rh bushing in the present invention is that low melting point glass fibers are used. That is, in the present invention, a low-cost inconel / SUS bushing can be used by using a low melting point glass fiber having a glass transition temperature of 750 캜 or less. The manufacturing cost can be reduced by using the low melting point glass fiber and the manufacturing cost can be further reduced by using the low cost Inconel / SUS bushing, so that the manufacturing cost can be drastically reduced.
Expensive Pt / Rh bushings do not need to be used for the manufacture of low melting point glass fibers with a glass transition temperature of 750 ° C. or lower according to the present invention. Spinning can be done. Therefore, Inconel or SUS bushings can be used as platinum / rhodium substitute bushings for producing low melting point glass fibers.
In other words, all glass fibers having a low melting point glass fiber, that is, a glass fiber composition having a glass transition temperature of 750 ° C. or lower, have a melting point lower than that of Inconel or SUS (above 1300 ° C.), so that Inconel or SUS bushing can be used. In fact, you could replace it with a good bushing.
Especially, since the glass transition temperature is 750 ℃ or less when fiberglass is fiberized, it can be used semi-permanently if it can block oxygen in the air when bushing is made with Inconel or SUS metal. Even if it is used in the air, it can be used for more than 10 days when the heating operation is continued for 24 hours.
FIG. 1 is a cross-sectional view of a bushing according to an embodiment of the present invention. Inconel or SUS metal plate can be processed as shown in FIG. 1 and electrically heated to be inserted into an electric circuit diagram like a general platinum / rhodium bushing. In the figure, 198 holes are formed in six rows of 33 holes each having a diameter of 1.95 mm. The thickness may be between 1 and 1.4 mm. However, the dimensions shown in the drawings are only exemplary, and the specifications of the bushing are not limited thereto and can be variously changed.
Glass fibers have a very wide composition, and glass fibers having various compositions can be developed depending on the application. There are 6 to 7 kinds of glass fibers, and the glass fibers, which account for more than 90%, are called E-glass. This glass fiber is excellent in electrical insulation, and it is called E in the electric insulation part, and the melting temperature is quite high. Since the spinning temperature of E-glass is 1200 ~ 1300 ℃, Pt / Rh bushings are used to manufacture these glass fibers.
Low-melting glass fiber as the plate glass used in the present invention is the first easy to recycle, the second price is low, the third has a low melting energy (1150 ℃ spinning temperature), the fourth electrical conductivity has the advantage over E-glass. Therefore, it can be very usefully used in the product of the present invention which is used for electromagnetic shielding by imparting electrical conductivity.
The melting point of the low melting point glass fiber is low, and it is possible to use inconet or SUS metal as a material of the bushing, and the result of lowering the manufacturing cost can be widely used. The reason for not being able to use carbon nanotubes (CNTs) or carbon fibers in automotive electromagnetic compatibility (EMC) shielding is high price. The metal coated glass fiber according to the present invention can be manufactured at low cost, Can be usefully used.
Although the strength of low-melting point glass fiber made of glass fiberglass is lower than that of E-glass fiber, it is very useful for electromagnetic wave shielding material as the role of electric conductor because it has little influence on strength unless low melting point glass fiber is used as a structural material have. Therefore, it can be used for BMC (Bulk Molding Compound), SMC (Sheet Molding Compound), PP (Polypropylene), PE (Polyethylene) and engineering plastics.
FIG. 2 is a view of a molten coating process according to an embodiment of the present invention. In the present invention, it is preferable to perform coating by passing a glass fiber through molten coating using a molten metal, that is, molten metal contained in the container. The productivity of the metal-coated glass fiber can be remarkably increased.
The method of partially coating monofilaments (one strand of fibers) with molten metal to coat them is extremely low in productivity. As a result, fabrics with monofilaments cannot be made when making EMC shielding fibers or fabrics for industrial use. Accordingly, in the present invention, in order to increase the productivity, a method of coating glass fibers in a molten metal in the form of a yarn is adopted.
2, the
At this time, the tensile strength of the
The container 6 is supported with
The coating rolls 5, 8 serve to facilitate movement and coating while guiding the
The container 6 is preferably made of boron nitride (BN) or graphite (graphite). As the material of the container 6, a molten metal and a material having a low wettability are the best materials. BN or graphite ceramic is the best material for this material. Boron nitride (BN) has a heat resistance temperature of 2000 ° C. or higher, high chemical stability, and excellent electrical insulation, thermal conductivity, machinability, and lubrication characteristics. Materials with high wettability (SUS or iron plate) react quickly with molten metal and accumulate sludge or scale, making them impossible to use for a long time.
The container 6 may have its own heat source to directly melt the metal. Alternatively, the container 6 may be melted in an external electric furnace or the like and then injected into the container 6.
In the present invention, one or more kinds of alloys selected from among aluminum (Al), zinc (Zn) and lead (Pb) can be used as the glass fiber coating metal. In particular, aluminum which is low in melting point and light in weight can be used . In addition to the molten Al metal, various kinds of molten metals may be used to increase conductivity, and metals having a melting point at low temperatures may be advantageously coated, and may also be advantageous in consideration of safety in production.
To prevent oxidation of the molten metal, the melt coating equipment comprising the vessel 6 can be made in a chamber filled with argon or nitrogen gas, which is an inert gas.
Passing through the
The electrical resistance of the produced metal coated glass fiber is preferably 10 -4 Ω or less in order to be suitable for electromagnetic wave shielding applications.
The thickness of the metal coating layer may be 0.1 to 100%, preferably 1 to 50%, based on the diameter of the glass fiber.
By coating the fiberglass yarns into fabrics, EMC shielding fabrics can be made more easily. The melt coating method according to the present invention is much cheaper than conventional vacuum deposition or sputtering, and mass production is possible. In the case of fibers (chemical fibers) other than glass fibers, fibers having a higher melting point than the metal melting temperature may be coated.
The metal coated glass fiber according to the present invention can be used not only as an electromagnetic wave shielding material for blocking electromagnetic interference but also as an electrically conductive functional fiber. These characteristics can also be applied to a chaff for radar disturbance or a blackout bomb for disabling the power grid.
[Example]
Low melting point glass fibers having a glass transition temperature of 700 DEG C were spun using an Inconel bushing of the same size as in Fig. Thereafter, Al was coated on the glass fiber yarn having a diameter of 50 mu m using the coating equipment as shown in Fig. At this time, BN was used as a container for containing molten Al.
[Test Example]
The electrical resistance of the Al-coated glass fiber fabricated by the example was measured by a four-point probe measurement method and was found to be about 5 × 10 -3 Ω.
In addition, as a result of scanning electron microscope (SEM) observation, Al was uniformly and smoothly coated on the glass fiber surface.
As described above, those skilled in the art will understand that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, all the above-described embodiments are to be understood as illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention without departing from the scope of the present invention.
1: Bobbin
2: Glass fiber
3, 4, 10, 11: feed roll
5, 8: coating roll
6. Container
7: molten metal
9: Metal coated glass fiber
12: coiling roll
Claims (8)
A coating step of coating the spun glass fibers with a metal
Method for producing metal coated glass fibers.
Method for producing a metal-coated glass fiber, characterized in that for the spinning step using an bushing made of Inconel or stainless steel.
Glass fiber is a low melting point glass fiber having a glass transition temperature of 750 ℃ or less method for producing a metal-coated glass fiber.
Method for producing a metal-coated glass fiber, characterized in that the diameter of the glass fiber is 20 ㎛ or more.
Metal is a method for producing a metal-coated glass fiber, characterized in that at least one selected from aluminum (Al), zinc (Zn), lead (Pb).
Coating is a method of producing a metal coated glass fiber, characterized in that the molten coating using a molten metal.
A method for producing a metal-coated glass fiber, characterized in that the coating by passing the glass fiber in the form of thread in the molten metal contained in the container.
Method for producing a metal-coated glass fiber, characterized in that the container is made of boron nitride (BN) or graphite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120068595A KR101608246B1 (en) | 2012-06-26 | 2012-06-26 | Method for producing metal coated glass fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120068595A KR101608246B1 (en) | 2012-06-26 | 2012-06-26 | Method for producing metal coated glass fiber |
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| KR20140001349A true KR20140001349A (en) | 2014-01-07 |
| KR101608246B1 KR101608246B1 (en) | 2016-04-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017039032A1 (en) * | 2015-09-02 | 2017-03-09 | 윈엔윈(주) | Electromagnetic wave shielding material sheet and manufacturing method therefor |
| WO2017077980A1 (en) * | 2015-11-02 | 2017-05-11 | セントラル硝子株式会社 | Electromagnetic shielding metal-coated glass fiber filler, method for manufacturing electromagnetic shielding metal-coated glass fiber filler, and electromagnetic shielding resin article |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010065366A (en) | 2008-08-11 | 2010-03-25 | Jfe Chemical Corp | Fiber-producing apparatus and method for producing fiber |
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- 2012-06-26 KR KR1020120068595A patent/KR101608246B1/en active IP Right Grant
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017039032A1 (en) * | 2015-09-02 | 2017-03-09 | 윈엔윈(주) | Electromagnetic wave shielding material sheet and manufacturing method therefor |
| WO2017077980A1 (en) * | 2015-11-02 | 2017-05-11 | セントラル硝子株式会社 | Electromagnetic shielding metal-coated glass fiber filler, method for manufacturing electromagnetic shielding metal-coated glass fiber filler, and electromagnetic shielding resin article |
| CN108349796A (en) * | 2015-11-02 | 2018-07-31 | 中央硝子株式会社 | The fiber glass packing of electromagnetic wave shielding coating metal, the manufacturing method of electromagnetic wave shielding coating metal fiber glass packing and electromagnetic wave shielding resin article |
| JPWO2017077980A1 (en) * | 2015-11-02 | 2018-08-23 | セントラル硝子株式会社 | Electromagnetic shielding metal-coated glass fiber filler, method for producing electromagnetic shielding metal-coated glass fiber filler, and electromagnetic shielding resin article |
| US20180305252A1 (en) * | 2015-11-02 | 2018-10-25 | Central Glass Company, Limited | Electromagnetic shielding metal-coated glass fiber filler, method for manufacturing electromagnetic shielding metal-coated glass fiber filler, and electromagnetic shielding resin article |
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| KR101608246B1 (en) | 2016-04-01 |
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