JP2003292343A - Method for producing modified foam glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide modified foam glass which has good appearance, surface strength and impact strength by spraying a metal on the rough surface of recycled glass which is regenerated by foaming mainly waste glass. <P>SOLUTION: The surface of the foam glass is sprayed with a reinforcing material such as the metal to be coated with the sprayed film. The spraying of the reinforcing material such as the metal on the surface of open-cell foam glass provides the modified foam glass having water absorption or water retention properties. The recycled glass which is regenerated from waste glass is preferably used as the foam glass. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a modified foamed glass in which a metal is sprayed on a rough surface of recycled glass, which is formed by mainly foaming and recycling waste glass.

[0002]

2. Description of the Related Art Conventionally, the present inventor has made efforts to develop a recycled glass obtained by foaming and recycling waste glass. As a result, the waste glass has various glass bottles and various materials and colors such as plate glass. The appearance of recycled glass using various waste glass is also diverse, and it looks bad because the surface condition is rough, which is one of the factors that hinders commercialization. In addition, high-foam glass is not only inferior in surface strength but also in impact strength, cracks during transportation, has poor durability, is not convenient to handle, and has problems such as limited applications. Was desired.

[0003]

As a result of diligent efforts to solve the above problems, the inventor of the present invention sprayed a reinforcing material such as a metal on the surface of the foam glass to change the color and material. Providing a method for producing modified foam glass that has a uniform appearance, improves the surface strength and impact strength of glass, looks good, and is easy to handle, even if waste glass is used The purpose is to do.

[0004]

In order to solve the above-mentioned problems, the present invention is to spray a reinforcing material such as metal on the surface of foam glass to coat the sprayed film on the surface of the foam glass. A method for producing a modified foamed glass characterized by the above (Claim 1).

In order to solve the above-mentioned problems, the present invention is a modification in which a reinforcing material such as a metal is sprayed on the surface of foam glass containing open cells to coat the sprayed film on the surface of foam glass. A method for producing foam glass, characterized in that the foam glass has a water-absorbing property or a water-retaining property as a result of water passing through an opening formed in the process of forming the sprayed film. A method for producing foam glass is defined (claim 2).

In order to solve the above-mentioned problems, it is preferable that the present invention is a method for producing the above modified foam glass, characterized in that the foam glass is made by recycling waste glass ( Claim 3).

In order to solve the above-mentioned problems, the present invention is characterized in that the metal is any one of aluminum, zinc or a metal having a predetermined ratio of aluminum and zinc. It is preferable to use the method for producing a modified foam glass described in (Claim 4).

In order to solve the above-mentioned problems, according to the present invention, the metals are aluminum and zinc, respectively.
It is preferable that the method for producing a modified foam glass according to any one of the above is characterized by comprising a ratio of -60% by volume and 50-40% by volume (claim 5).

In order to solve the above-mentioned problems, the present invention provides a method for producing a modified foam glass in which a reinforcing material such as a metal is sprayed on the surface of the foam glass by arc spraying and the sprayed film is coated. , One of the different kinds of conductive metal wires is connected to the positive electrode side and the other is connected to the negative electrode side, and an arc is generated between both wires to melt them, and according to the ratio of both metals, It is preferable that the method for producing a modified foam glass according to any one of the above is characterized in that the spray speed of the wire is adjusted and the molten metal is sprayed onto the surface of the foam glass that is the adherend. (Claim 6).

[0010]

Since the present invention is constructed as described above, it has the following operation. In the thermal spraying, the thermal spray material is heated by combustion or electric energy, and the melted particles are sprayed onto the substrate to form a thermal spray film, and the thermal spray film is brought into close contact with the substrate. In normal thermal spraying, in order to firmly adhere the thermal spray coating to the substrate, it is necessary to roughen the surface of the substrate before thermal spraying by blasting surface roughening treatment to increase the physical bond degree.

However, since the foamed glass originally has a foamed cell open on the glass surface and the surface of the foamed glass is formed into a rough surface, it is not necessary to purposely roughen the surface, and it is possible to save time and trouble for thermal spraying. Is convenient. Moreover, a part of the sprayed metal film bites into the opening of the foam cell and is physically bonded by the anchor effect, so that the metal film can firmly adhere to the surface of the foam glass. Furthermore, since the metal film bites into the foam cells, the metal film is three-dimensionally configured by the bite into the inside of the foam cell in addition to the planar spread of the glass surface, so not only the surface strength but also the impact strength. Can be improved.

Further, one of the characteristics of the open-cell foam glass is that it absorbs water by a capillary phenomenon and retains the absorbed water. On the other hand, the sprayed film formed by spraying the metal or the like has a structure in which, in the process of forming the sprayed film, the compressed particles cause the molten particles of the sprayed material flying at a high speed to collide with the base material to be flattened at a high speed. Solidify and deposit. At that time, voids (opening holes) are formed between the particles. When water propagates through this opening due to the capillary phenomenon and reaches the foam glass of the communicating bubbles, the water penetrates inside due to the characteristics of the foam glass, and thus the water absorption or water retention characteristic of the communicating glass foam glass is achieved. Can be maintained. Such a phenomenon is an action peculiar to the modified foam glass according to the present invention, which cannot be obtained by coating other than thermal spraying such as dipping or spray coating.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. The foamed glass according to the present invention is not particularly limited, but it is preferable that the foamed cell has an opening on the surface of the glass and the surface is roughened. As an example of such foamed glass, an example of recycled glass made from waste glass will be described below.

First, the recovered glass bottle and the recovered plate glass are subjected to a crushing process. The crushing process includes primary crushing with a crusher, secondary crushing, and fine crushing with a ball mill. The roughly crushed glass is sieved to remove dust, and crushed with a fine crusher to 30 to 60μ, and then a foaming agent. For example, silicon carbide and calcium carbonate are added and mixed with stirring. Next, the glass powder is adjusted to a uniform thickness on a mesh belt, placed on the mesh belt, sent to a furnace set at 850 to 900 ° C., and fired for a predetermined time to simultaneously foam. Depending on the type of foaming agent and foaming conditions, it is possible to manufacture foam cells that are rich in open cells, rich in closed cells, or in between. After firing, it is gradually cooled to prevent cracking due to spalling, and then cut into a predetermined shape. It is also possible to manufacture the bead-shaped foamed glass by using a muffle furnace of the type that is heated from the outside of the rotary kiln. Any of these foam glasses can be the subject of the modified foam glass of the present invention.

Next, a modified foamed glass is obtained through a step of spraying a metal or the like on the surface of the foamed glass manufactured by the above steps. Thermal spraying (Thermal Sprayin
According to JIS, according to JIS, combustion or electric energy is used to heat the thermal spray material, and particles that are in a state of being melted or close to that are sprayed onto the base material to form a film. Thermal spraying includes gas spraying with gas (oxygen and combustible gas), arc spraying with electric arc, plasma spraying, wire spraying, and so on. Depending on the spraying material, spray wire flame spraying, melt bar flame spraying, powder flame spraying , High speed flame spraying,
There are explosive spraying and the like, and in the case of the present invention, the arc spraying is about 60 although it is not limited to any type of spraying.
A high temperature of 00 ° C. is obtained, the spraying ability is very large, and the adhesion to the substrate is excellent, which is preferable.

As the thermal spray material, a metal generally used for rust prevention of an iron plate or for overlaying can be used. For example,
Zinc, aluminum, zinc-aluminum alloy, carbon steel, chromium, nickel, manganese, alloys thereof, stainless steel and the like are used. In addition, cermets and synthetic resins containing metals and ceramics as components can be widely used. Among these metals, zinc is preferable because it has an antibacterial action. Further, the surface can be colored by spraying a coloring material such as aluminum bronze or by color coating.

Among the above-mentioned thermal spray materials, zinc and aluminum wires, for example, aluminum is connected to the positive electrode and zinc is connected to the negative electrode side, an arc is generated between both wires to melt them, and It is preferable to adjust the thermal spraying rate so that aluminum and zinc have a ratio of 50 to 60% by volume and 50 to 40% by volume, respectively, and perform thermal spraying. Particularly, aluminum and zinc adjusted to 55% by volume and 45% by volume, respectively, prevent zinc from leaching to the outside and are excellent in potential rust prevention / corrosion prevention. Further, the thickness of the metal film after thermal spraying is in the range of about 50 to 300 μm, and sufficient strength and appearance can be obtained.

The metal coating formed by metal spraying as described above has fine pores formed during the coating formation process, and the opening pores therein propagate moisture to the interface of the foam glass by the capillary phenomenon as described above. Play a role to do. However, when water absorption or water retention is not required, it is possible to seal the pores by a sealing treatment. As an example of the pore-sealing treatment, it is preferable to treat with a pore-sealing agent such as one-liquid type or two-liquid type synthetic resin listed in JIS (H9301) or sodium silicate. Further, coating may be applied on the entire surface after the sealing treatment with a sealing treatment agent.

[0019]

EXAMPLES Examples will be described below with reference to the drawings. FIG. 1 is an enlarged cross-sectional view illustrating a modified foam glass according to Example 1 of the present invention. In FIG. 1, 1 is a modified foam glass, 11 is a sprayed film, 12a is a closed-cell foam glass, 13 is a flat particle, 14 is an anchor part, and 15a is a closed cell. , 16 are bottom surface open air bubbles, 17 are interface open air bubbles, and 18 are open holes in the sprayed film.

The first embodiment of the present invention mainly comprises closed cells 1.
Using an arc spray gun on the upper surface of the plate-shaped foam glass 12a made of 5a, a wire of aluminum and zinc having a wire diameter of 1.6 mm is sprayed at a speed of 20 m / min each,
The sprayed film 11 which is sprayed at a rate of 15 m / min is composed of a layer of metal flat particles 13, and an opening hole 18 is formed in the boundary surface of the flat particles 13. Interface open air bubble 17
Part of the flat particles 13 on the interface side is bitten into the inside of the to form the anchor portion 14 to firmly bond the sprayed film 11 to the foam glass 12a and improve the strength.

Next, FIG. 2 is an enlarged sectional view illustrating a modified foam glass according to a second embodiment of the present invention. The second embodiment of the present invention is mainly composed of continuous cells 15 instead of the plate-shaped foam glass 12a composed of the closed cells 15a in the first embodiment.
The same as Example 1 except that the plate-shaped foam glass 12b made of b was used. However, by using the plate-shaped foamed glass 12b composed of the open cells 15b, moisture due to the capillary phenomenon is generated between the opening hole 18 formed in the thermal spray film 11 and the continuous cells 15b of the foamed glass 12b continuous with the opening hole 18. The characteristics different from those of Example 1 in that water absorption or water retention are provided by promoting the propagation of water.

The modified foamed glass obtained in Examples 1 and 2 both have a calm appearance and a slight metallic luster, are very good-looking, and have improved surface strength. It has been confirmed that scratches are less likely to occur even when scratched by a needle or the tip of a sharp blade, and that the impact strength is sufficiently improved to withstand practical use, and that there is almost no cracking due to transportation in normal packaging. .

[0023]

EFFECTS OF THE INVENTION The modified foamed glass according to the present invention has an appearance obtained by the manufacturing method according to the present invention even if it is foamed glass that is foamed and recycled without selecting waste glass of various materials and colors such as glass bottles and plate glass. Is very attractive, and has surface strength and impact strength that can withstand practical use.
It is easy to handle and has an extremely high commercial value compared to conventional foamed glass. Furthermore, since it is possible to maintain the water-absorbing property or water-retaining property of the open-cell foam glass without impeding the properties, it is expected to be widely used in fields such as landscaping and construction materials, and it is extremely economically effective.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view illustrating a modified foam glass according to Example 1 of the present invention.

FIG. 2 is an enlarged sectional view illustrating a modified foam glass according to Example 2 of the present invention.

[Explanation of symbols]

1: Modified foamed glass, 11: Thermal sprayed film, 12a: Closed-cell foamed glass, 12b: Open-celled foamed glass, 13: Flat particles, 14: Anchor part, 15a: Closed cell, 15b: Open cell, 16: Bottom open bubbles, 17: Interface open bubbles, 1
8: Opening hole

Continued front page    (72) Inventor Takayuki Maruyama             4-6-7 Higashi Ueno, Taito-ku, Tokyo Stocks             Company Yamasho (72) Inventor Kazuki Mizuno             13 of 1562, Hita, Hita-cho, Toki City, Gifu Prefecture             Limited company Isu Touen (72) Inventor Isao Hoshino             1-14-Dankei-dori, Showa-ku, Nagoya-shi, Aichi             2 IC Building 3F SK Mining Co., Ltd.             Within F-term (reference) 4G059 AA16 AB01 AC08 AC16 DA05                       DA09

Claims (6)

[Claims] 1. A method for producing a modified foamed glass, which comprises spraying a reinforcing material such as a metal on the surface of the foamed glass and coating the sprayed film on the surface of the foamed glass. 2. A method for producing modified foamed glass, which comprises spraying a reinforcing material such as a metal onto the surface of foamed glass containing communicating cells to coat the surface of the foamed glass with the sprayed film. A method for producing a modified foamed glass, wherein the foamed glass has a water absorbing property or a water retaining property due to water passing through an opening formed in a film forming process. 3. The method for producing a modified foam glass according to claim 1, wherein the foam glass is formed by recycling waste glass. 4. The modified foam glass according to claim 1, wherein the metal is any one of aluminum, zinc, and a metal having a predetermined ratio of aluminum and zinc. Method. 5. The modified foam glass according to claim 1, wherein the metal comprises aluminum and zinc in a ratio of 50 to 60% by volume and 50 to 40% by volume, respectively. Production method. 6. A method for producing a modified foam glass in which a reinforcing material such as a metal is sprayed on the surface of the foam glass by arc spraying to coat the sprayed film, and one of different kinds of conductive metal wires is used. Connect the other side to the positive electrode side and the other side to the negative electrode side to generate an arc between both wires to melt and adjust the spray rate of each wire according to the ratio of both metals to It sprays on the surface of the said foam glass which is an adherend, The manufacturing method of the modified foam glass in any one of the Claims 1-5 characterized by the above-mentioned.