JPH0842010A - Joint-seal structure and joint-sealing method thereof - Google Patents

Abstract

PURPOSE:To inexpensively provide a joint-sealing method, by transferring a thermo-addition reactive type adhesive layer on a rugged coarse face of an elastic gasket made of a silicone rubber elastic material of which the connection face is formed rugged and coarse unify them as a unit. CONSTITUTION:A joint material 4 in which a belt-form elastic gasket 1 and a thermo-addition reactive type adhesive layer 2 containing a filler, a heat- resistant agent, an adhesion-improving agent, and an excessive curing catalyst, with vinylsiloxane, Si-H bridging agent as chief components is provided on a carrier tape 3 and unified as a unit, is used for joint-sealing. In this case, the carrier tape 3 is removed from the thermo-reactive adhesive layer 2 provided at both sides of the joint material 4. The thermo-addition reactive type adhesive layer 2 is pushed into the joint clearance to face the joint face and interposed on the boundary face between a fixed plate of the applied part of a building and the joint material 4, for the curing reaction.

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 for construction that must be performed under such external conditions, a wet construction method in which the sealant S is filled by the formwork construction method as shown in FIGS. 10 and 11. 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 attempted, 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 is not affected by the weather even in the relatively low temperature and low humidity winter season. Construction can be performed, the airtightness and watertightness of joints can be properly maintained, the construction period and man-hours can be reduced, dust contamination is not caused, and the joint seal structure and joint sealing method that can also contribute to the prevention of outer wall contamination can be constructed easily. It is intended to be provided in an inexpensive form.

[0004]

The present invention is directed to a belt-shaped elastic gasket, vinyl siloxane and Si-H crosslinking agent as main components, a filler, a heat-resistant agent, an adhesion improver and an excess amount of a curing reaction catalyst. And a temperature-added reaction type adhesive layer containing a carrier tape.

[0005]

[Function] When the joint seal is applied, the joint material of the silicone rubber elastic body is inserted together with the temperature addition reaction type adhesive layer between the adherends such as the glass plate, the metal plate or the ceramic plate, for example, the joint seal portion, and the reaction is performed there. The adhesive is solidified and solidified with the adherend and the joint material in a short time after the start of adhesion, and the addition reaction type silicone is suitable and stable without being severely restricted by external conditions. The required airtightness and watertightness can be maintained, the construction period can be shortened, pollution can be prevented, and the construction process can be reduced easily.

In this case, the temperature addition reaction type adhesive layer can be cured and adhered at room temperature because an excess amount of the curing reaction catalyst is added therein, but it cannot be stored for a long time as it is. Can be stored for a long period of time by keeping it at a low temperature of 5 ° C or lower and at the same time put it in a completely sealed container so that the vapor of acetylene alcohol and its derivative, which is an inhibitor of the addition reaction, becomes saturated. is there. When the temperature-added reaction type adhesive layer is at a high temperature, curing and adhesion can be instantaneously performed, but at a temperature of 5 ° C. or higher, practical adhesiveness can be used without any problem.

[0007]

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. An elastic gasket 1, such as silicone rubber or foam, whose elasticity, strength, and hardness can be selected appropriately. Vinyl siloxane, S on the surface
A joint seal structure, which is a joint material 4 in which an i-H cross-linking material as a main component, a filler, a heat-resistant agent, an adhesion improving agent, and a temperature addition reaction type adhesive layer 2 containing an excessive amount of a curing reaction catalyst are integrally joined. Is.

The temperature addition reaction type adhesive layer 2 can be cured and adhered at room temperature because an excess amount of the curing reaction catalyst is added therein, but it cannot be stored for a long time as it is, so the storage is not possible. It is kept at a low temperature of 5 ° C. or lower, and at the same time, placed in a completely sealed packaging bag or container so that the vapor of acetylene alcohol and its derivative which is an inhibitor of the addition reaction becomes saturated. Therefore, the temperature addition reaction type adhesive layer 2 is capable of instantly curing and adhering at a high temperature, but at a temperature of 5 ° C. or higher, a practical adhering reaction can be used without any problem, and the curing reaction to be added thereto The platinum catalyst, which is a catalyst, can be cured even at a low temperature by adjusting the amount to about 1.5 to 50 times the usual amount. (The reaction starts when the reaction inhibitor volatilizes and scatters.) For example, the temperature addition reaction type adhesive layer 2 is mainly composed of a Si—H crosslinking agent of the following chemical formula 1 and a vinyl siloxane of the following chemical formula 2, The molar ratio is Si-H / vinyl siloxane = 1.2 to 5.0, and fillers such as silica, quartz powder, alumina [5 to 30
(Wt%)] and additives such as an adhesion improver, a heat-resistant agent, and a flow regulator [3 to 20 (wt%)], which are extruded, sheeted by a calendar or the like, or formed into a tape, Carrier tape 3 at the same time or later
It is possible to attach a sticking type temperature-added reaction type adhesive layer.

[0009]

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[0010]

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Thus, when the joint seal 4 is compressed and inserted into the joint gap 9, a temperature addition reaction type adhesive layer containing vinyl siloxane and Si—H cross-linking agent, which are provided on both sides of the joint filler 4, as main components. Remove the carrier tape 3 from 2,
The fixing plate 8 for the adherend in the building 7, which is compressed and inserted into the joint space so that the temperature-added reaction type adhesive layer 2 faces the joint surface.
It is preferable to interpose it on the boundary surface between the joint material 4 and the joint material 4 and carry out reaction hardening.

Both side surfaces of the elastic gasket 1 of the joint material 4 may be flat surfaces, but as shown in FIG. 3, a silicone rubber elastic body whose joint surface is formed into a rough uneven surface is used, and the rough surface has uneven temperature. The addition reaction type adhesive layer 2 may be transferred and integrated. According to this, it is possible to hold the adhesive layer stably even when the adhesive layer bites into the uneven surface well. In this case, at the time of construction, for example, an addition reaction type adhesive tape enclosed in an airtight packaging bag (not shown) is transferred and integrated onto the rough surface having irregularities,
After inserting into the joint gap 9 between the fixing plates 8, the carrier tape 3 may be pulled out.

The temperature addition reaction type adhesive layer 2 may be in the form of a narrow sheet, but as shown in FIGS. 4 and 5, one side of the carrier tape 3 is heated to a predetermined width along both longitudinal directions. A reactive adhesive layer 2 is laminated in parallel with a space between the carrier tape 3 and a pair of folding curves 5.
It is also possible to use one having a locking hole 6 for pulling out the carrier tape between the folding lines 5 and 5.

As shown in FIG. 6, the temperature-added reaction type adhesive layer 2 is bonded to the joint material 4 and the carrier tape 3 is bent along the outer side of the joint material in a U-shape from the bending line 5 (the carrier tape is the outer side). After covering both sides of the joint material 4 by compressing and inserting it into the joint gap, the carrier tape 3 is pulled outward and pulled out from the joint gap, and the adherend and the joining member are adhesively cured to seal the joint. This is also a useful method, and this method facilitates insertion between the joining members due to the low friction of the carrier tape.

Further, in the example applied to the glass window of aluminum sash, as shown in FIGS. 7 to 8, the temperature addition reaction type adhesive layers 2 are provided on both surfaces of the joint material 4, the carrier tape 3 is peeled off, and the aluminum sash frame 11 is removed. , The glass plate 10 is placed on the setting block 12 in the aluminum sash, the backer material 13 is inserted between the aluminum sashes on the inner surface of the glass plate, and the joint material 14 similar to the above is retrofitted. It can be inserted by compression as a gasket, and the temperature-added reaction type adhesive layer 2 of the joint material 14 can be reactively cured to complete the adhesive fixing to the aluminum sash frame 11.

In FIG. 8, a joint material 14 having the temperature-added reaction type adhesive layer 2 attached is fitted to the outer surface of the glass plate 10,
Instead of the joint material to be fitted on the inner surface, a silicone sealant is cast on the backer material 13.

In the example shown in FIG. 9, after the glass plate 10 is placed on the setting block 12 of the aluminum sash frame 11 in advance, the joint material 17 is fitted to the backer material 13 and the joint material 4.
The joint material 14 can be preliminarily attached to the glass plate 10 in advance and incorporated therein. In addition, on the outer surface of the elastic gasket of the joint material 17, a metal foil,
For example, a surface material (not shown) such as a foil of SUS, Ni, Ti, nickel silver, A1 or the like, or a gas barrier layer may be attached. Further, the functions and construction methods of the construction method of the present invention and the construction method of the conventional example are shown in Table 1, and the construction method of the present invention is a dry construction method of the conventional wet sealant construction method (FIGS. 10 and 11). It has the advantages of being less affected by humidity, shorter in curing time and higher in joint strength.

[0018]

[Table 1]

[0019]

Industrial Applicability According to the present invention, vinyl siloxane and Si-H crosslinking agent are contained as main components on both sides of a belt-shaped elastic gasket, and a filler, a heat-resistant agent, an adhesion improver and an excessive amount of a curing reaction catalyst are included. By using joint material with temperature-added reaction type adhesive layer integrally bonded, airtightness and watertightness can be greatly improved, seismic resistance can be properly ensured, dimensional accuracy is stable, weather resistance, Heat resistance and ozone resistance are maintained, and a stable sealing effect is obtained. In addition, the construction is easy and the work at high places can be done easily, and the curing time can be shortened, which helps prevent pollution, and can realize a significant reduction in construction cost 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 and (b) shows a state in which an adhesive layer is transferred to a gasket and a carrier tape is peeled off.

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

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

FIG. 7 is a partial vertical cross-sectional view showing the steps (a) to (d) for constructing a glass window.

FIG. 8 is a partial vertical cross-sectional view showing another construction step (a) to (d) of the glass window.

FIG. 9 is still another construction process (a) to (d) for the glass window.
FIG. 3 is a partial vertical cross-sectional view showing

FIG. 10 is a vertical cross-sectional view of a part of a conventional sealant method.

FIG. 11 is a partial vertical cross-sectional view showing a process of a sealant method in a conventional glass window.

[Explanation of symbols]

 1 Elastic Gasket 2 Temperature-Reactive Adhesive Layer 3 Carrier Tape 4 Joint Material 5 Folding Curve 6 Locking Hole 7 Building 8 Fixing Plate Material 9 Joint Recess 10 Glass Plate 11 Aluminum Sash 12 Setting Block 13 Backer Material 14 Joint Material

Claims (5)

[Claims] 1. A belt-shaped elastic gasket is provided on both sides of the gasket.
A joint seal which is composed mainly of vinyl siloxane and Si-H cross-linking agent, a filler, a heat-resistant agent, an adhesion improver and a temperature addition reaction type adhesive layer containing an excessive amount of a curing reaction catalyst. Structure. 2. The elastic gasket is a silicone rubber elastic body whose joint surface is formed with a roughened surface, and a temperature addition reaction type adhesive layer is transferred and integrated on the roughened surface. Joint seal structure. 3. The temperature-addition-reactive adhesive layer is provided on one side of a carrier tape at intervals of a predetermined width along both longitudinal directions, and a pair of folding curves are provided on the carrier tape, and a supporting hole is provided between the folding curves. The joint seal structure according to claim 1 or 2, further comprising: 4. The temperature addition reaction type adhesive is enclosed in an airtight packaging bag together with a volatile reaction inhibitor, which is opened at the time of application, peeled from a carrier tape, and transferred to a joint material. The joint seal structure according to item 2 or 3. 5. When a joint seal is formed by compressing and inserting an elastic joint material into a joint gap, a temperature addition reaction type adhesive layer on a carrier tape is provided on both sides of the joint material so that the carrier tape is on the outside along the joint material outside. After bending it into a U shape and covering it over both sides of the joint material, insert it into the joint gap by compression, and then pull the carrier tape outward to pull it out of the joint gap. A joint sealing method characterized by reacting and curing layers in joint gaps.