JPH05254896A - Sealing method for fire protection glass - Google Patents

Abstract

PURPOSE:To provide a large-sized fire protection glass improved in workability and also the sealability of the inlet and mechanical strength, preventing sealed parts from debonding from a glass base plate or such glass plate from breaking in solution packing. CONSTITUTION:Two glass base plates 4, 4' are placed facing to each other through a corner joint 2-inserted spacer 1, and the space between said base plates is packed with a hydrous gel to accomplish the objective sealing. In this case, the spacer and/or the corner joint are provided with screw hole(s) which is then screwed with a screw 3. In this state, the peripheral part is sealed with a sealant followed by curing and then unscrewing. Thence, the space between the glass base plates 4 and 4' is packed with a solution convertible to a hydrous gel through polymerization and curing followed by screwing again to plug the hole(s).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sealing fireproof glass in which a hydrogel is filled between transparent substrates.

[0002]

2. Description of the Related Art Conventionally, net-cored glass has been used as a fireproof glass, but it has disadvantages such as poor permeability due to the net, low heat insulation, and not necessarily sufficient fire resistance. As a solution to these drawbacks, a fireproof glass in which a foamable refractory material such as hydrous gel or water glass is filled between two plate glasses has been proposed, and partly implemented.

Although such a water-containing gel fireproof glass needs to be sealed at its peripheral portion with a sealing material, no suitable method is disclosed, and in general, a hole is formed in a spacer and the sealing material is sealed. After that, the sealing material is cut out and filled with a water-containing polymer, the water-containing gel is cured after filling, and finally the spacer hole is closed with a screw or the like, and the notched portion of the sealing material is closed with the sealing material. Has been taken.

However, in such a method, a step of cutting out the sealing portion is required, which is time-consuming, and the cutout portion is closed after that. However, the sealing property of this portion is not sufficient, and ultraviolet rays after filling the solution are not provided. There is a risk that the gel will shrink when it is polymerized and cured by irradiating with, and the sealing material at the inlet cannot withstand, so that the outside air is drawn in and air bubbles are generated near this portion.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a fireproof glass having improved workability and improved sealing property and strength of the injection port.

[0006]

According to the present invention, two glass substrates are opposed to each other via a spacer having a corner joint inserted therein, and a fireproof glass filled with a hydrogel is sealed between the glass substrates. In the method, a screw hole is formed in the spacer or the corner joint, the peripheral portion is sealed with a sealing material in a state where a screw is screwed into the screw hole portion, and after curing, the screw is removed and the solution is removed from the portion. After filling the polymerization,
After filling the solution that is hardened into a water-containing gel and screwing it with a screw after filling, the screw hole is closed, or a screw hole is formed in the spacer and the corner joint, and at least one of the spacers is provided in the screw hole portion. The peripheral part is sealed with a sealing material while the screw is screwed so that it protrudes from the glass substrate to the outside.
After curing, the screw is removed, the solution is filled from the portion, the solution is polymerized and filled with a solution to be a water-containing gel, and after filling, the screw hole is screwed to close the screw hole. To do.

[0007]

[Operation] Spacers or corner joints, screw holes are formed in the spacers and corner joints, and while the screws are screwed into the screw holes, the peripheral portion is sealed and cured with a sealing material such as silicone or thiocol. After that, the screw is removed, and after filling from that part, a solution that is polymerized and cured to form a hydrous gel is filled, so there is no need to cut out the injection port as in the conventional case, and the screw hole is screwed into the screw hole after filling. The elastic sealing material is pressed by the screw by closing it, so it has the same effect as the packing, and it has enough strength to withstand gel shrinkage during curing due to UV irradiation, and also has a good sealing property and the inclusion of outside air. Can be completely prevented.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. 1 and 2 are a front view and a vertical sectional side view of a main part of a laminate before filling a solution in Example 1 of the present invention, FIG. 3 is a perspective view at the time of filling, and FIG. 4 is a fireproof glass after the filling. FIG. 5 is a vertical cross-sectional side view of a main part of FIG. 5, and FIG.

Example 1 A screw hole is formed in a spacer and a corner joint,
The case where the inlet is formed near the corner will be exemplified. As shown in FIGS. 1 and 2, a spacer 1 and a corner joint 2 in which screw holes are preliminarily formed as a solution injection port are prepared, the corner joint 2 is inserted into and connected to the spacer 1, and a screw 3 is inserted into the screw hole. Screw on.

Next, the glass substrates 4 and 4'of 6 mm thick such as soda lime glass are attached to the corner joints 2.
Is inserted, and the space is maintained at, for example, 10 mm by the spacer 1 coated with butyl rubber (not shown) on the side,
In the temporarily attached state, the peripheral portion is sealed with the silicone sealing material 5.

After the screw 3 is removed from the screw hole, the injection pipe 6 is inserted into the injection hole as shown in FIG. The angle α formed by the side A where the inlet is formed and the horizontal plane H is 10 ° to
The injection port is inclined at an angle β of 10 ° to 30 ° between the side B adjacent to the side A on which the injection port is formed and the horizontal plane H at 30 °. Injection tube 6
50 to 60% by weight of water and acrylic superabsorbent monomer 1 such as sodium polyacrylate.
0-20% by weight, inorganic substances such as silica 20-30% by weight
The mixed solution 7 is filled to the full, and then both the angles α and β are further tilted by 5 ° to 10 ° and tilted to fill a small remaining amount until the full. After that, the injection pipe 6 is pulled out, and in some cases, the central portion is pressed to discharge the excess solution, and the injection port is quickly screwed as shown in FIG.
Then, the threaded portion is sealed with the same silicone-based sealing material 9.

Then, by irradiating this laminated body with ultraviolet rays, the solution is polymerized and gelled to become a foamable refractory substance (hydrous gel) to complete a fireproof glass. The fire-proof glass obtained in this way has no residual air, and is particularly excellent in sealing properties. As for the fire-proof performance, the result of a test based on the Ministry of International Trade and Industry Notification No. 1125 shows that the fire-resistant glass has a performance that can sufficiently pass a Class A fire door I confirmed that I had it.

Example 2 A case will be exemplified in which the spacers 1 and 1 adjacent to the corner joint are provided with screw holes to form injection holes at the corners. As shown in FIG. 5, the spacers 1 and 1 adjacent to the corner joints 2 which are preliminarily carved with holes for solution injection are also prepared.
The corner joint 2 is inserted and connected to, and the screw 3 is screwed into the screw hole.

Then, in the same manner as in Example 1, a glass substrate 4 such as soda lime glass having a thickness of 6 mm,
4 ′, the corner joint 2 is inserted, and the space is maintained at a distance of, for example, 10 mm by the spacer 1 coated with butyl rubber (not shown) on the side, and the peripheral portion is sealed with the silicone-based sealing material 5 in a temporarily attached state. To wear.

After the screw 3 is removed from the screw hole, an injection pipe is inserted into the injection port, and the glass substrate is inclined from this pipe with 50 to 60% by weight of water and an acrylic resin such as sodium polyacrylate. Fill a solution containing 10 to 20% by weight of a water-absorbing monomer and 20 to 30% by weight of an inorganic substance such as silica until it is full, then pull out the injection pipe 5 and press the central part in some cases to remove the excess solution. After discharging, the injection port is quickly closed with a screw, and the screw portion is sealed with the same silicone-based sealing material as the shape of the substrate.

Next, by irradiating this laminated body with ultraviolet rays, the solution is polymerized and gelled to become a foamable refractory substance (hydrous gel) to complete a fireproof glass. The preferred embodiments have been described above, but the present invention is not limited to these, and various applications are possible.

Regarding the position of the screw hole, that is, the position inside the solution injection, it is formed close to one of the glass substrates, and the solution is tilted at the time of injection to fill the solution with 400 mm × 6.
When the stack is filled vertically with a large size such as 00 mm, the central part swells greatly during filling, the sealing part peels off from the glass substrate, liquid leakage occurs, and in some cases the glass substrate is damaged. However, it is preferable because it is possible to eliminate such drawbacks, but in the case of a relatively small size, it may be provided in the substantially central portion between the two substrates. Further, in plan view, a portion close to a corner as shown in the embodiment, or a corner (in this case,
Generally, since spacers are connected by corner joints in contact with each other, together with the corner joints,
Although the screw holes are also formed in the adjacent spacers, depending on the shape of the corner joints, the adjacent spacers may be connected slightly apart from each other. In this case, the screw holes may be formed only in the corner joints. ) Is preferable because residual air can be reduced, but it may be formed in the central portion of the side A (in this case, a screw hole is formed only in the spacer). In addition to the short side A, it may be formed at the corner of the long side B or in the vicinity of the corner.

Regarding the screw, a sealing screw as shown in FIG. 4 is preferable because the flat head screw can be flush with the glass substrate, and thus, a normal screw as shown in FIG. Can be used. Further, as the screw 3 for securing the injection hole shown in FIGS. 1, 2 and 5, a countersunk screw as shown in FIG. 4 can be used. Therefore, the screw used to secure the injection hole can also be used as the sealing screw. Further, when the corner joint is used as the inlet, it is aesthetically preferable that the screw for securing the inlet and the screw for sealing do not protrude from the glass substrate as shown in Example 2, but it is practical. There is no problem even if you let it protrude.

Further, regarding the hydrogel which is polymerized and cured by ultraviolet rays, the superabsorbent polymer of the examples is a synthetic acrylic polymer such as sodium acrylate vinyl alcohol copolymer, saponified polyacrylonitrile polymer, Various foamable refractory gels can be used, such as polyvinyl alcohol cross-linked polymers and other polyvinyl alcohol-based synthetic polymers.

As the glass substrate, other than soda lime glass, crystallized glass, low expansion glass or the like can be adopted, and in this case, the fire protection performance is further improved.

[0021]

EFFECTS OF THE INVENTION The fireproof glass of the present invention uses screw holes skillfully at the time of solution filling and sealing, so that the injection port does not need to be cut out as in the conventional case and the working life is good, and it can be cured by ultraviolet irradiation. It has sufficient strength to withstand gel shrinkage, and has good sealing properties, and can completely prevent entry of outside air.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a laminated body before solution filling in Example 1 of the present invention.

FIG. 2 is a vertical cross-sectional side view of essential parts showing a laminated body before solution filling in Example 1 of the present invention.

FIG. 3 is a perspective view at the time of solution filling in Example 1 of the present invention.

FIG. 4 is a vertical cross-sectional side view of essential parts showing the fireproof glass after solution filling in Example 1 of the present invention.

FIG. 5 is a front view of a main part of a laminate before solution filling in Example 2.

[Explanation of symbols]

 1 spacer 2 corner joint 3, 8 screw 4, 4'glass substrate 5, 9 sealing material 7 solution

Claims (2)

[Claims] 1. A method for sealing fireproof glass in which two glass substrates are opposed to each other through a spacer having a corner joint inserted therein, and a water-containing gel is filled between the glass substrates. After engraving a screw hole and sealing the peripheral part with a sealing material in a state where a screw is screwed into the screw hole part and curing it, remove the screw and fill the solution from the part, polymerize, cure and hydrous A method for sealing fire-resistant glass, characterized in that a solution that becomes a gel is filled, and after the filling, a screw is screwed to close the screw hole. 2. A method for sealing fireproof glass in which two glass substrates are opposed to each other via a spacer having a corner joint inserted therein, and a water-containing gel is filled between the glass substrates. After engraving a screw hole and sealing the peripheral part with a sealing material in a state where a screw is screwed into the screw hole part and curing it, remove the screw and fill the solution from the part, polymerize, cure and hydrous A method for sealing fire-resistant glass, characterized in that a solution that becomes a gel is filled, and after the filling, a screw is screwed to close the screw hole.