JPH07293119A - Joint seal structural body and joint seal construction method - Google Patents

Abstract

PURPOSE:To enhance air-tightness, workability and the like by inserting an elastic body such as silicone rubber and the like which are composed of an addition reaction type adhesion layer in a specified composition, and a reaction catalyst layer, into a joint seal section so as to be hardened, and thereby bonding a bonded body with a joint filler. CONSTITUTION:Addition reaction type adhesive layers 2, each of which is mainly composed of Si-H cross-linking material, and includes additives such as vinyl-siloxane, heat resistant agent and the like, are joined with both sides surfaces of an elastic body such as silicone rubber, foamed material or the like, so as to be formed into a joint filler 1, covered with a release sheet 3. One piece of material 7 is formed, which is provided in its carrier tape 6 with a reaction catalyst layer mainly composed of vinylsiloxane with reinforcing material and reaction catalyst included. When the joint filler 4 is to be inserted into joint gaps, after the catalyst layer 5 has been pressed into contact with the adhesion layer 2 from which a sheet 3 has been removed, the tape 6 is released. The material thus formed is inserted into the joint gaps with pressure, and it is reacted so as to be hardened in such a way that the adhesion layer 2 on which the catalyst layer 5 is bonded, is faced to the surface of each joint. By this constitution, air tightness, water tightness, weather resistance and the like can thereby be enhanced, and workability can also be enhanced by a dry construction method to a great extent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint seal structure and a joint seal construction method used for fixing and finishing to a building such as a window glass, an outer wall of a building, and other similar boards in the construction work of a building such as a high-rise building. Is.

[0002]

2. Description of the Related Art Conventionally, in a glazing method for a window portion of a high-rise building, a wet method using a sealant using a condensation reaction type material such as a silicone resin, a modified silicone, and polysulfide, and a fixed gasket method have been adopted. In general, construction of windows for high-rise buildings requires work at a high place from the outer wall of the building, the construction is affected by the weather and the cost of construction is large, and depending on the structure of the outer wall of the building, work can be done without hanging the gondola. It is often impossible.

[0003]

In the sealant construction method in the construction that must be performed under such external conditions, the wet construction method in which the sealant S is filled by the formwork construction method as shown in FIGS. 12 and 13. Because of this, it takes a long time to cure, and construction may be impossible in the winter depending on the humidity and temperature conditions.
The sealant joint may pollute the wall surface due to dust pollution or secondary pollution. In addition, a gasket construction method in which a fixed gasket is fitted has been tried, but the airtightness and watertightness of the gasket are affected by many factors such as compression set characteristics, weather resistance, heat resistance, ozone resistance, and temperature dependence of hardness. If the performance is expected to decrease and there is basically no watertight function, the isostatic method,
There is a drawback that the inflowing water drainage method is forced and the cost is high, and it is not sufficiently satisfied in terms of airtightness and watertightness. Especially, the fixed gasket is easily displaced due to wind pressure, vibration, and thermal stress, and sticking out easily occurs. There are many problems such as method, dimensional accuracy of standard gasket, aluminum sash, and absorption of dimensional tolerance of glass plate. The present invention eliminates these drawbacks of the conventional sealant construction method and gasket construction method, greatly improves the workability by the dry construction method, and even in the winter season at relatively low temperature and low humidity,
A joint seal structure that can be constructed without being affected by the weather, optimizes the maintenance of the airtightness and watertightness of joints, reduces the construction period and man-hours, does not cause dust pollution, and contributes to the prevention of outer wall pollution. Another object of the present invention is to provide a joint sealing method with a simple structure and at a low cost.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a belt-like elastic gasket is provided on both sides with an additive such as a vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improver, which contains a Si--H crosslinking agent as a main component. A combination of a joint material integrally bonded with an addition reaction type adhesive layer and a reaction material having a material layer containing vinyl siloxane as a main component and containing a reinforcing agent, an adhesion improver and a reaction catalyst on a carrier tape. Is.

[0005]

[Function] When performing joint sealing, between the adherends such as glass plate, metal plate or ceramic plate, for example, in the joint seal portion,
A joint material of a silicone rubber elastic body is inserted by being bonded and transferred by transferring an addition reaction type adhesive layer containing a Si—H crosslinking agent as a main component and a reaction catalyst layer containing a vinylsiloxane as a main component. The reaction of the bonding layer starts and it hardens in a short time,
The adherend and joint material are bonded and solidified to be integrated, and the dry construction method using this addition reaction type silicone ensures accurate and stable required airtightness and watertightness without being severely restricted by external conditions. In addition to shortening the construction period, it is possible to easily prevent pollution and reduce the construction process.

[0006]

EXAMPLE An example of the present invention will be described with reference to an example of an outer wall of a high-rise building in FIGS. 1 and 2. Elastic gaskets such as silicone rubber or foam whose elasticity, strength and hardness can be appropriately selected, and both side surfaces of other elastic bodies. And an addition reaction type adhesive layer 2 containing a Si-H cross-linking material as a main component and containing additives such as vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improver, are integrally joined, and the addition reaction type adhesive layer 2 is formed on the addition reaction type adhesive layer 2. Release sheet 3 if necessary
And a reaction material 7 in which a carrier catalyst 6 is provided on the addition reaction type adhesive layer 3 with a reaction catalyst layer 5 containing vinyl siloxane as a main component and containing a reinforcing agent, an adhesion improver and a reaction catalyst. The joint seal structure is a combination of the above.

The addition reaction type adhesive layer 2 has room temperature or 6
It has a low temperature curing reaction of 0 ° C. or less, preferably 5 ° C. to 40 ° C., and it reacts with vinyl silane to be transferred and a platinum catalyst. The elastic gasket surface has a high cross-linking density and is covered with glass, aluminum or the like. On the attachment surface, the structure of the gradient addition reaction having a low crosslink density improves the adhesive force with the elastic gasket and prevents the occurrence of internal strain with the adherend. For example, as the addition reaction type adhesive layer 2,
Si-H cross-linking agent of the following chemical formula 1 as a main component, Si-H /
Vinylsilane having a molar ratio of 1.2 to 2.5, a reinforcing agent such as silica, quartz powder, and alumina [5 to 30 (wt%)], and an additive such as an adhesion improver, a heat resistance agent, and a flow control agent [3. .About.20 (wt%)] and is formed on the side surface of the silicone rubber elastic gasket 1 by coating, impregnation, extrusion, or the like.

[0008]

[Chemical 1]

[0009]

[Chemical 2]

The reaction catalyst layer 5 is composed mainly of vinyl siloxane of Chemical formula 2, a reinforcing agent (5 to 30% by weight) such as silica, quartz powder and alumina, and a platinum catalyst (0.1 to 0.1% by weight).
1.0% by weight) and additives (5 to 50% by weight) such as an adhesion improver, a heat-resistant agent, and a flow control agent, and formed on the carrier tape 6 by coating, impregnation, extrusion, calendering, etc. In addition, the reaction catalyst layer 5 is pressed and integrated with the addition reaction type adhesive layer 2 at the time of use, and is cured by reaction to be adhered.

Both side surfaces of the elastic gasket 1 of the joint material 4 may be flat surfaces, but as shown in FIG. 3, the joint surface is a silicone rubber elastic body having a rough uneven surface and is added to the rough uneven surface. The reaction catalyst layer 5 of the reaction material 7 is attached to the one obtained by transferring and integrating the reactive adhesive layer 2, and the carrier tape 6 is peeled off for use. In this case, the reaction material 4 is, for example, a package sealed in an airtight packaging bag (not shown) or a vacuum package vacuum-sealed, and the reaction catalyst layer 5 is peeled off from the carrier tape 6 by opening at the time of construction. What makes them convenient.

The reaction material 4 may be in the form of a narrow sheet, but as shown in FIGS. 4 and 5, the reaction catalyst layers 5 are formed on one surface of the carrier tape along the longitudinal direction of both sides to a predetermined width.
5 are bonded in parallel at intervals, and a pair of curves is provided on a carrier tape 6 between the reaction catalyst layers 5 and 5, and a supporting hole 9 for pulling out the carrier tape is provided between the folding curves. It is also possible to use the one.

[0013] Thus, at the time of performing a joint seal for compressing and inserting the elastic joint material 4 into the joint gap 12, the addition reaction type adhesive layer 2 having Si—H crosslinking agent as a main component, which is provided on both sides of the joint material 4, When the reaction catalyst layer 5 containing vinyl siloxane as a main component is bonded and cured by reaction, the release sheet 3 is removed from the addition reaction type adhesive layer 2 of the joint material 4 as shown in FIGS. After the reaction catalyst layer 5 of the carrier tape 6 is pressure-bonded to the reaction type adhesive layer 2, the carrier tape 6 is peeled from the reaction catalyst layer 5, and the addition reaction type adhesive layer 2 to which the reaction catalyst layer 5 is bonded is attached. So that it faces the eye ground,
It is preferable to compress and insert it into the joint gap, and to intervene at the boundary surface between the fixing plate 11 of the adherend in the building 10 and the joint material 4 to carry out reaction hardening. In this case, when the fixed plate members 11 of the adherend are pressed against each other, the structure is as shown in FIG.

In addition, the fixed plate members 11 and 11 arranged opposite to each other are connected to each other by pressing and fixing the reaction catalyst layer 5 on the facing joint surface of each fixed plate member 11 and peeling the carrier tape 6. The release sheet 3 is removed from one of the addition reaction type adhesive layers 2 of the joint material 4, and the addition reaction type adhesive layer 2 is pressed and fixed to the reaction catalyst layer 5 of the one fixing plate 11 before the joint material 4
The release sheet 3 is removed from the other addition reaction type adhesive layer 2, and the reaction catalyst layer 5 of the other fixed plate body 11 is pressed and integrated with the addition reaction type adhesive layer 2 together with the fixed plate body 11 on both sides of the joint material 4. The addition reaction type adhesive layers 2 and 2 can also be reactively cured. (Figure 7)

Further, as shown in FIG. 8, the release sheet is removed from the addition reaction type adhesive layer 2 of the joint material 4 (FIG. 8a),
The carrier tape 6 is bent along the outer side of the joint material into a U-shape from a folding curve 8 so that the reaction catalyst layer 5 of the carrier tape 6 is bonded onto the addition reaction type adhesive layer 2, and both sides of the joint material 4 are bent. (FIG. 8b), and then the addition reaction type adhesive layer 2 to which the reaction catalyst layer 5 is attached faces the joint surface,
The carrier tape 6 is compressed and inserted into the joint gap so that the carrier tape 6 is on the outside (FIG. 8c), and then the carrier tape 6 is pulled outward and pulled out from the joint gap to separate the addition reaction method adhesive layer and the reaction catalyst layer. It is also effective as a construction method to interpose on the boundary surface between the adherend and the bonding member in the state of being pressed and to cure and react to seal the joint (FIG. 8d).

Further, in an example of application to an aluminum sash glass window, as shown in FIGS. 9 to 11, the reaction catalyst layer 5 is pressed and fixed on both surfaces of the glass plate 13 and the facing surface of the aluminum sash 14, respectively, to thereby form a carrier tape. 6 is peeled off, and the joint material 4 is joined to at least one of the joint surfaces via the one additional reaction adhesive layer 2 of the joint material 4 so as to be preliminarily attached to the outer surface of the glass plate or the sash. The other addition reaction type adhesive layer 2 is attached to the glass plate 13 or the aluminum sash 14
And the glass plate 13 is placed on the setting block 15 in the aluminum sash, the backer material 16 is inserted between the aluminum sashes on the inner surface of the glass plate, and the same as above. A conventional wet sealant construction method (FIGS. 12 and 13) in which the joint material 17 is compression-charged as a post-installed gasket and the addition reaction type adhesive layers on both sides of the joint material 17 are reactively cured by the joined reaction catalyst layers Compared to), there is less influence of humidity, less influence of temperature, curing time (construction period) takes 3 to 4 weeks, it takes only 1 to 4 days, and the bonding strength can be increased 3 to 5 times. Helps prevent dust pollution and oligomers.

In FIG. 10, the outer surface of the glass plate 13 is
The joint material 4 to which the reaction catalyst layer is attached or applied is fitted, and a silicone sealant 18 is driven in place of the joint material 17 to be fitted on the inner surface.

In the example of FIG. 11, the glass plate 13 is placed on the setting block 15 of the aluminum sash 14 in advance, and then the joint material 4, the backer material 16 and the joint material 17 are fitted and reaction-cured. , The joint material 4 in advance the glass plate 1
It is also possible to pre-populate 3 and install.

A surface material (not shown) such as a metal foil, an Al foil, or a gas barrier layer may be attached to the outer surface of the elastic gasket 1 of the joint material 4.

Table 1 is a comparison of the function and construction method between the method of the present invention and the conventional method.

[0021]

[Table 1]

[0022]

INDUSTRIAL APPLICABILITY According to the present invention, an addition reaction type adhesive containing Si-H cross-linking agent as a main component and additives such as vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improver on both sides of a belt-like elastic gasket. Airtightness is achieved by combining the joint material with the layers joined together and the reaction material that has a reaction catalyst layer containing vinyl siloxane as a main component, a reinforcing agent, an adhesion improver, and a reaction catalyst on the carrier tape. ， The watertightness is greatly improved, and the vibration resistance can be properly secured, and the dimensional accuracy is easy and the weather resistance, heat resistance, and ozone resistance are maintained, and the stable sealing effect is obtained, and the construction is also possible. It is simple and easy to work in high places, shortens the curing time, helps prevent pollution, and realizes significant reduction in construction costs and labor saving.
In addition, the joint seal construction method of the present invention eliminates various drawbacks of the conventional sealant construction method and gasket construction method, and greatly improves the workability by the dry construction method. It is possible to carry out the construction without any damage, to properly maintain the airtightness and watertightness of joints, reduce the construction period and the number of man-hours, and prevent dust pollution, which also contributes to the prevention of outer wall pollution.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the present invention, in which (a) shows a state before construction, (b) shows a release sheet removed state, and (c) shows a bonding and joining state.

2 is a vertical cross-sectional view showing a construction state in a joint between high-rise outer walls in the example of FIG. 1, (a) before insertion, (b) after insertion, (c).
Indicates a fixed and integrated state.

FIG. 3 is a vertical cross-sectional view showing another embodiment of the present invention, (a)
Shows the state before bonding and (b) shows the state after bonding.

FIG. 4 is a vertical sectional view of still another embodiment of the present invention.

5 is a bottom view taken along line I-I of FIG.

FIG. 6 is a vertical cross-sectional view showing construction steps (a) and (b) according to another embodiment of the present invention.

FIG. 7 is a construction process (a) of still another embodiment of the present invention.
It is a longitudinal cross-sectional view showing (b).

8 is a vertical cross-sectional view showing construction steps (a) to (d) of the example of FIG.

FIG. 9 is a partial vertical cross-sectional view showing steps (a) to (d) for constructing a glass window.

FIG. 10 is a partial vertical cross-sectional view showing other construction steps (a) to (d) of the glass window.

FIG. 11 is still another construction step (a) of the glass window.
It is a part longitudinal cross-sectional view which shows (d).

FIG. 12 is a vertical cross-sectional view of a part of a conventional sealant method.

FIG. 13 is a partial vertical cross-sectional view showing a process of a sealant method for a conventional glass window.

[Explanation of symbols]

 1 Elastic Gasket 2 Addition Type Adhesive Layer 3 Release Sheet 4 Joint Material 5 Reaction Catalyst Layer 6 Carrier Tape 7 Reaction Material 10 Building 11 Fixing Plate Material 12 Joint Recess 13 Glass Plate 14 Aluminum Sash 15 Setting Block 16 Backer Material 17 Joint Material

Claims (10)

[Claims] 1. A belt-shaped elastic gasket is provided on both sides of the gasket.
A joint material containing a Si-H crosslinking agent as a main component and an addition reaction type adhesive layer integrally including additives such as vinyl siloxane, a reinforcing agent, a heat-resistant agent, and an adhesion improving agent, and a vinyl siloxane as a main component, and reinforced. A joint seal structure comprising a combination of a reaction catalyst layer containing an agent, an adhesion improver, and a reaction catalyst on a carrier tape. 2. The addition reaction type adhesive layer is at room temperature or 6
It has a high crosslink density on the elastic gasket surface and a low crosslink density on the adherend such as glass or aluminum due to the structure of the gradient addition reaction that is reactively cured at a low temperature of 0 ° C. or lower.
The joint seal structure according to claim 1, wherein the joint strength is improved with the elastic gasket and internal strain with the adherend is prevented. 3. The joint material of the joint material is a silicon rubber elastic body, the joint surface of which is formed into an uneven rough surface, and an addition reaction type adhesive layer is transferred and integrated on the rough uneven surface. Joint seal structure. 4. The reaction material is obtained by laminating a reaction catalyst layer on one surface of a carrier tape along a longitudinal direction of both sides with a predetermined width in parallel and at intervals. The joint seal structure according to claim 1, wherein the joint seal structure comprises a pair of folding curves and a supporting hole between the folding curves. 5. The reaction material is a package sealed in an airtight packaging bag or a vacuum package sealed in vacuum, which is opened at the time of construction to peel the reaction catalyst layer from the carrier tape and transfer it to a joint material. The joint seal structure according to claim 2, 3 or 4. 6. An addition reaction type adhesive layer containing a Si—H cross-linking agent as a main component, which is provided on both sides of the joint material, and a vinyl siloxane main component when a joint seal is formed by compressing and inserting an elastic joint material into the joint gap. When the reaction catalyst layer and the reaction catalyst layer to be cured by reaction, after pressure-bonding the reaction catalyst layer of the carrier tape on the addition reaction type adhesive layer of the joint material, peel the carrier tape from the reaction catalyst layer, Addition reaction type adhesive layer with reaction catalyst layer is compressed and inserted into the joint space so that it faces the joint surface, or the adherends are pressed against each other, and the reaction is cured at the interface between the adherend and the joint material. A joint seal construction method that is characterized by 7. An addition reaction type adhesive layer containing a Si—H cross-linking agent as a main component, which is provided on both sides of the joint material, and a vinyl siloxane main component when a joint seal is formed by compressing and inserting an elastic joint material into the joint gap. When the reaction catalyst layer and the reaction catalyst layer are to be cured by reaction, the reaction catalyst layer is pressed and fixed on the opposing joint surfaces of the adherend to be opposed and the carrier tape is peeled off. The addition reaction type adhesive layer is pressed and fixed to the reaction catalyst layer of one adherend, and then the reaction catalyst layer of the other adherend is pressed and integrated with the other addition reaction type adhesive layer of the joint material together with the adherend. The joint sealing method is characterized in that the addition reaction type adhesive layers on both sides of the joint material are cured by reaction. 8. An addition reaction type adhesive layer containing a Si—H crosslinking agent as a main component, which is provided on both sides of the joint material, and a vinyl siloxane main component at the time of performing a joint seal in which an elastic joint material is compressed and inserted into a joint gap. The carrier tape is U-shaped along the outside of the joint material so that the reaction catalyst layer of the carrier tape is attached to the addition reaction type adhesive layer of the joint material when the reaction catalyst layer is bonded and cured by reaction. After bending over, covering both sides of the joint material, the adhesive layer facing the reaction catalyst layer is facing the joint ground, and the carrier tape is compressed and inserted into the joint gap so that it is on the outside, The carrier tape is pulled outward and pulled out from the joint gap, and the additional reaction adhesive layer and the reaction catalyst layer are pressure-contacted, and the reaction tape is interposed at the boundary surface between the adherend and the joint material for reaction curing. The joint seal construction method. 9. The joint seal construction method according to claim 8, wherein the carrier tape is pulled out from the joint gap by inserting and supporting a jig into a through hole formed in the carrier tape. 10. Si-H provided on both sides of the joint material at the time of joint seal construction in which the elastic joint material is compressed and inserted into the joint gap.
When the addition reaction type adhesive layer containing a cross-linking agent as a main component and the reaction catalyst layer containing a vinyl siloxane as a main component are bonded and cured by reaction, a reaction catalyst layer is formed on each side of the glass plate and the facing surface of the aluminum sash. The carrier tape is peeled off by pressing and fixing, and the joint material is joined to at least one of the joint surfaces via one of the addition reaction type adhesive layers of the joint material to be a pre-attached state on the outer surface of the glass plate or the sash surface, Join the other addition reaction type adhesive layer of the joint material to the glass plate surface or the reaction catalyst layer of the aluminum sash, place the glass plate on the setting block in the aluminum sash, and insert the aluminum plate between the aluminum sashes on the inner surface of the glass plate. After the backer material was charged into the above, a joint material similar to the above was compression-inserted as a post-installed gasket, and the reaction-curing layers bonded with the addition reaction type adhesive layers on both sides of the joint material were subjected to reaction hardening. Joint sealing method which is characterized in that.