JP2002154848A - Hydrous gel-containing fireproof glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce thermally insulating hydrous gel-containing fireproof glass provided with pipes filled with gas in the hydrous gel of a gel-containing fireproof glass body filled with the gel within the spaces of double-glazing unit-like structure. SOLUTION: The gel-containing fireproof glass body filled with the hydrous gel is provided with the pipes filled with gas within the hydrous gel. The pipes are internally filled with at least one gas among dry air, argon, krypton, xenon and SF6. Further, the pressure of the gas packed in the tubes is regulated to <=10 Pa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire prevention glass used for an opening of a building, a vehicle, or the like, which requires fire prevention.

[0002]

2. Description of the Related Art In the event of a fire in a building, there is a need for a window member which has fire-proofing properties such as protection against the propagation of a flame, a barrier against the diffusion of smoke, and a shield against radiant heat.

[0003] In response to the aforementioned requirements, netted glass is used for windows for fire doors. Recently, besides netted glass,
Gel-containing double-glazed structures or various heat-resistant sheet glasses have been proposed for windows on the outer walls of buildings, partitions in rooms, or windows provided in doors such as passageways.

[0004] For example, Japanese Patent Publication No. 60-24063 discloses a fire-resistant pane in which two or more glass sheets are arranged in parallel with each other and the space of the glass sheets is filled with a gel, wherein at least one kind of the gel is used. And the gel has a high heat of evaporation, such as water 65
To 95% by weight of a substance which is miscible with the gel and capable of forming a thermally insulating foam under a hot wire, for example, a soluble salt 1 to 1 selected from the group consisting of alkali metal salts or ammonium salts.
And 20% by weight.

[0005] For example, Japanese Patent Laid-Open Publication No. Hei 3-286058 discloses a configuration in which water glass is sealed between a pair of transparent heat-resistant crystallized glasses opposed in parallel at a predetermined interval. .

[0006] Further, the applicant of the present invention has disclosed Japanese Utility Model Laid-Open No. 5-63558.
Japanese Patent Application Publication No. JP-A-2005-115122 discloses a configuration of a fire-resistant glass containing a hydrogel in which a hydrogel is filled between two sheet glasses.

[0007]

The fire-resistant glass containing hydrogel has excellent fire-protection properties such as protection against the propagation of a flame, the prevention of the diffusion of smoke, and the shielding against radiant heat during a building fire. .

[0008] However, the heat insulation performance is better than that of a single sheet of glass, but is poorer than that of a double glass in which dry air is filled in a closed space formed by separating two sheets of glass with a spacer.

Therefore, although it is used as a fire door for partitioning a passage or the like, it is not preferable to widely use it for an opening in a wall from the viewpoint of energy saving of a building.

[0010]

According to the present invention, there is provided a fire-resistant glass containing a heat-insulating hydrogel, comprising a gel-filled fire-resistant glass filled with a hydrogel in a space of a multi-layered glass-like structure. It is characterized in that it is provided in a hydrogel. Cross-section of the tube is circular or rectangular, gas filled in the tube is dry air, argon, krypton, xenon, at least one gas of SF _6. Further, the pressure of the filled gas is preferably 10 Pa or less.

The thermal conductivity of a hydrogel is smaller than that of glass and larger than that of air. Therefore, if a gas-filled tube is provided in the hydrogel, heat conduction in the tube is reduced, and the amount of heat flowing through the entire glass is reduced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Two sheets of glass are opposed to each other and separated in parallel via a spacer, and a sealed space formed by the two sheets of glass and the spacer is filled with hydrogel to form a fire-resistant glass. .

The glass sheet is an inorganic transparent glass sheet, which is colorless or colored, and its type or color tone.
The shape and the like are not particularly limited. Further, as well as bent sheet glass, various processed glass such as various strengthened glass and strengthened glass, wire / netted glass, crystallized glass, borosilicate glass or aluminosilicate glass Glass and the like can also be used.

The spacer for separating the plate glass preferably has a U-shaped cross section. The material is preferably a metal such as aluminum or steel in consideration of easiness of processing and thermal stability. Stainless steel is preferable in consideration of corrosion resistance and the like.

The spacer and the plate glass are preferably bonded with a non-water-permeable and tacky adhesive of a synthetic rubber type such as polyisobutylene, polyisobutylene-butyl or butyl. Incidentally, usually, silica as a reinforcing filler in the adhesive,
Unsaturated hydrocarbon resins, chroman resins, terpene resins, rosin derivatives, etc., as tackifiers, and other drying agents can also be added as appropriate, such as white carbon, titanium oxide, magnesium silicate, and aluminum silicate. The adhesive can hold the vitreous plate in a wide temperature range with an adhesive force even if the vitreous plate is bent due to fluctuations in the outside air pressure or expansion and contraction of the hydrogel, and prevents escape of the aqueous medium in the hydrogel. And
It maintains stability for a long time.

Further, the outer peripheral portion of the spacer is made of a synthetic rubber-based sealing material such as silicone-based, polysulfide-based rubber,
Seal with a sealing material such as polyurethane or polybutadiene-polystyrene rubber. A filler such as heat-resistant inorganic material powder and other additives can be appropriately mixed into the sealing material.
The sealing material, of course, has tackiness, but is an important component particularly for firmly holding the sheet glass and the spacer and more completely blocking the hydrogel from the outside.

Hydrous gels include acrylic synthetic polymers such as sodium acrylate vinyl alcohol copolymer, saponified polyacrylonitrile polymer, and polyvinyl alcohol synthetic polymers such as polyvinyl alcohol crosslinked polymer. Water and an inorganic substance such as silica, etc., as appropriate, for example, 50 to 60% by weight of water, 10 to 20% by weight of an acrylic superabsorbent monomer such as sodium polyacrylate %, 20 to 30% by weight of an inorganic substance such as silica.

The above-mentioned hydrogel solution is filled in a closed space formed by two plate glasses and a spacer, and irradiated with ultraviolet rays to be crosslinked and hardened.

In the hydrogel, a gas-filled tube is provided across the opposite side of the fire-resistant glass containing the hydrogel, and the end of the tube is fixed to the spacer using an adhesive margin. As the adhesive, an adhesive used for bonding the plate glass and the spacer can be used.

The tube may be made of a transparent or opaque resin or glass, but is preferably made of glass in consideration of the thermal expansion against temperature change. It is preferable that both ends of the tube are sealed with metal or the like, and that the cross section of the tube be circular or rectangular.

The tube is made of dry air, argon, krypton,
It is desirable that the gas is filled with at least one gas of xenon and SF ₆ , and it is more preferable that the gas has a pressure of 10 Pa or less, since the heat insulating performance is enhanced.

The sheet glass and the hydrogel may be appropriately changed in thickness and the like into a plurality of layers, and a transparent organic plate such as polycarbonate or an acrylic plate may be used instead of the sheet glass.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. Example 1 FIG. 1 is a plan view of a fire-resistant glass containing a hydrogel produced according to the present invention. 2 and 3 correspond to FIG.
It is sectional drawing of aa 'and bb' of the fire protection glass containing a hydrogel shown in FIG.

Two clear float glass sheets 7 having a thickness of 6 mm, a short side of 1000 mm and a long side of 1000 mm,
7 is a U-shaped spacer 6 having a width of 19 mm.
And a butyl rubber-based adhesive 4 was used to form a space having a thickness of about 19 mm.

The spacer 6 on the long side has a spacer 6
A plurality of circular holes (not shown) were formed on the surface not bonded to the plate glass 7. This hole, as shown in FIG.
This is for inserting the glass tube into the space through the glass tube 3.

The glass tube 3 has an inner diameter of 6 mm and an outer diameter of 7 mm. The pressure of the gas 8 in the tube is set to 5 Pa, and both ends are sealed with aluminum end sealing lids 9. After passing the glass tube 3 through the spacer 6, the glass tube 3
Was fixed to the spacer 6 using a butyl rubber-based adhesive 4 '.

An injection hole (not shown) for injecting a hydrogel solution is provided at an appropriate position of the spacer 6 for communicating the space between the two glass sheets 7 and 7 with the outside air. In this case, the outer periphery of the spacer 6 and the end faces of the glass sheets 7 and 7 are sealed with a silicone-based sealing material 5 except for the injection hole, and 50-60% by weight of water is injected into the space from the injection hole.
10-20% by weight of an acrylic superabsorbent monomer such as sodium polyacrylate;
After the completion of the injection of the solution of the hydrogel 2 mixed with the weight%, the injection hole was sealed with the same silicone-based material as the sealing material 5.

After sealing, using a 120 W ultraviolet lamp,
The hydrogel 2 was cured by irradiating ultraviolet rays from outside the glass sheet 7. Comparative Example 1 A fire-resistant glass containing hydrogel was produced in the same manner as in Example 1 except that a hole for providing a tube was not formed in the spacer and the tube was not provided in the gel. Comparative Example 2 Two glass sheets having the same size as the glass sheet used in Example 1 were used, and a double glazing was produced using a spacer having an air layer thickness of 6 mm. The same material as in Example 1 was used for the adhesive and the sealing material. Example 1, Comparative Example 1
A heat insulation performance test based on JIS A 4710 was performed for Comparative Example 2 and Comparative Example 2. Table 1 shows the values of the heat transmission coefficient of Example 1, Comparative Example 1 and Comparative Example 2 obtained as a result of the test.

[0029]

[Table 1]

From the values of the heat transmission coefficient shown in Table 1, it was confirmed that the fireproof glass containing the heat-insulating hydrogel of the present invention can achieve the same heat-insulating performance as the double-glazing.

[0031]

The fire-resistant glass containing a heat-insulating hydrogel according to the present invention has the same heat-insulating performance as the double-glazed glass, and uses the fire-prevention glass containing the water-containing gel on a wide part of the building wall without impairing the energy-saving performance of the building. Made it possible.

[Brief description of the drawings]

FIG. 1 is a plan view of a fire-resistant glass containing a heat-insulating hydrogel according to a first embodiment.

FIG. 2 is a sectional view taken along line a-a 'of FIG.

FIG. 3 is a sectional view taken along the line b-b 'of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Peripheral sealing part 2 Hydrogel 3 Glass tube 4 Adhesive material 5 Sealing material 6 Spacer 7 Plate glass 8 Gas 9 End sealing lid

Continuation of the front page (72) Inventor Kazuya Kobayashi 1510 Oguchicho, Matsusaka-shi, Mie Central Glass Co., Ltd. Glass Research Laboratory F-term (reference) 4G061 AA09 AA28 BA01 BA02 CA02 CB02 CB06 CB12 CB13 CD02 CD22 CD24 DA22

Claims (4)

[Claims] 1. A fire-resistant glass body containing a gel filled with a hydrogel in a space of a multi-layered glass-like structure, wherein a gas-filled tube is provided in the gel. Fire protection glass. 2. The fireproof glass according to claim 1, wherein the cross section of the tube is circular or rectangular. 3. The method of claim 2, wherein the gas is dry air, argon, krypton,
Xenon, adiabatic hydrogel containing fire retardant glass according to claim 1 or claim 2, characterized in that at least one gas SF _6. 4. The fire-resistant glass containing a heat-insulating hydrogel according to claim 1, wherein the gas pressure is a pressure of 10 Pa or less.