JPH0596675A - Sandwiched board - Google Patents

Abstract

PURPOSE:To obtain inexpensively a light sandwiched bard having long-sized sandwich panel structure where fire resistance, sound insulating properties and vibration-damping properties are improved drastically. CONSTITUTION:A core material 6 having specific structure is stuck inbetween an incombustible base 1 and a clad steel sheet 2 through an adhesive agent, made into a composite board, the core material 6 is formed of a fire-resistant resol type phenolic foam 8 and inorganic light aggregate 7, and the incombustible base 1 and core material 6 are integrated with the adhesive agent by making use of heat-resistant nonwoven fabric having various functions for a separation layer 9. Then since the same becomes structure where a resin component and adhesive agent component forming the subject of the core material 6 react with each other, this is light sandwiched board where strong adhesion and a cost reduction are contrived and moreover this can be accepted for fire resistance for one hour and possesses heat insulating properties, sound insulating properties and vibration damping properties.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sandwich plate which is useful as a fireproof inner / outer wall material for buildings and structures, a fireproof partitioning material, a fireproof soundproofing material, and is lightweight, fireproof and mechanically strong.

[0002]

2. Description of the Related Art Generally, heat-resistant inner and outer wall composite plates are disclosed in Japanese Utility Model Publication Nos. 57-185535, 58-1538, 63-15444, and JP-B-2. No. 18230, etc. are known.

[0003]

However, these composite plates have major drawbacks in the following points. That is, in the above composite plate, the non-woven fabric is a thin non-woven fabric such as glass fiber, and the phenol foam leaks to the opposite surface, that is, the surface that adheres to the so-called non-combustible base material to form a brittle plate-shaped adhesive surface. It is necessary, and there is a disadvantage that the structure cannot fully exhibit the strength of the adhesive force.

In the above composite board, a lightweight aggregate is laid finely and is integrated with a non-combustible base material by phenol foam,
Although it has a structure that improves fire resistance, it has a drawback that the phenol foam itself, which is the core material, does not have a very strong adhesive force and the phenol foam, which is the core material, is peeled from the non-combustible base material.

The above-mentioned composite plate is a building in which a non-combustible sheet impregnated with sodium borate and a phenol foam are integrally fixed, and a non-combustible impermeable layer is integrally fixed on the non-combustible sheet via an adhesive. It is a plate. At this time, however, impregnation of the raw material of the phenol foam into the non-woven fabric is likely to occur only on the surface, and the reaction system of alkali and acid hinders the foam formation, resulting in a decrease in adhesive strength.

Further, since the composite plate has a structure in which a face material and an aggregate-containing phenol foam are integrated and fusion is used to integrate the face material and the core material, the adhesive strength is uncertain. was there. Further, the above-mentioned composite plates (1) to (3) were lacking in adhesive strength for integrating the phenol foam and the face material, and had higher heat resistance, for example, a weakness that they could not pass a fireproof test for 1 hour of fire resistance.

[0007]

In order to eliminate such drawbacks and to enhance sound insulation, the present invention has at least a clad steel plate having a lead foil, a separation layer having special performance, and a core material having fire resistance and heat resistance. And fire resistance, heat insulation, which is integrally fixed between the separation layer and the non-combustible base material through an adhesive that chemically reacts with one component of the core material,
We propose a sandwich plate that has sound insulation and excellent strength.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the sandwich plate according to the present invention will be described in detail below with reference to the drawings. That is,
FIG. 1 is a sectional view showing a typical example of a sandwich plate A according to the present invention, in which 1 is a non-combustible base material, 2 is a clad steel plate,
6 is a core material, 7 is an inorganic lightweight aggregate, 9 is a separation layer, and 10 is an adhesive layer.

To explain further, as the non-combustible base material 1,
For example, a surface-treated steel plate, a stainless steel plate, a galvalume steel plate, a galfan, an aluminum plate, a titanium plate, a enamel steel plate, a fluororesin coated steel plate, a copper plate or the like is press-formed, roll-formed, extruded or the like. Reference numeral 2 is a clad steel plate, which has a structure in which a thin metal plate 3 having rigidity, a resin layer 4, and a lead foil 5 of about 30 to 100 microns, which is the inner side, are integrally formed, and mainly the sound insulation and the vibration isolation are enhanced. It was done.

The core material 6 is formed of an inorganic lightweight aggregate 7 and a phenolic foam 8 filling a space between the inorganic lightweight aggregates 7 at about 10 to 100 mm. The aggregate 7 is densely packed, dispersed, or unevenly distributed in one side.

To further explain, the inorganic lightweight aggregate 7 is useful for enhancing the compressive strength, the fire resistance and the soundproofing. Specific examples thereof include pearlite grains,
Glass beads, shirasu balloon, calcium silicate particles,
It consists of one or more kinds of talc grains, etc.
It is about 20 mmφ.

Phenol foam 8 is of the resol type and adheres together the inorganic lightweight aggregate 7 and the separation layer 9 by their reaction, self-adhesiveness at the time of foaming, and strengthens the heat insulating property and the fireproofing property and the adhesive described later. The condensed water effectively acts on the chemical reaction of, and the adhesive strength is further strengthened. In particular,
Phenol foam 8 has a composition in which fire resistance is significantly improved by adding flame retardants, inorganic particles, and the like.

As shown in the enlarged view of FIG. 2, the separation layer 9 is mainly composed of condensed water produced by a chemical reaction in the formation of phenol foam, water absorption of water vapor, a diffusion function by absorbing moisture and a control function of the above reaction system (reaction). It is composed of a non-woven fabric having a function of delaying the state), a releasing function, a water absorbing function, a reinforcing function, a face material function, a fireproof layer reinforcing function and an anchor function.

The nonwoven fabric has a thickness of 0.3 to 5 mm.
The unit and basis weight are 40 to 300 g / m ² , and the material is one type such as polyester type, nylon type, carbon fiber and aramid fiber. In particular, among the functions of the voids and the thickness of the non-woven fabric described above, the phenol foam 8 is optimally controlled by escaping the condensed water to the outside during the phenol foam reaction, preventing the adhesive water from lowering the adhesiveness, and controlling the reaction state. It can be controlled while the adhesive penetrates the non-woven fabric, and serves to integrate the non-combustible substrate 1 and the separation layer 9.

The adhesive layer 10 bonds the incombustible base material 1, the clad steel plate 2 and the separation layer 9 together and by a physical and chemical reaction. Examples of the adhesive include a resin containing a component that reacts with water, a resin containing a component that reacts with a phenol component, and an adhesive effective.

Specific examples of the adhesive include one or more of an elastomer type epoxy resin, urethane resin, phenol resin, polyester resin, emulsion type such as isocyanate, hot melt type and the like.

An example of the method for manufacturing a sandwich plate according to the present invention will be briefly described below. Assuming that the sandwich plate A shown in FIG. 1 is manufactured, a color steel plate having a thickness of 0.5 mm is formed as a non-combustible base material 1 by a molding machine. To form a gutter shape, apply an adhesive to the inner surface of the bottom surface, and then laminate the separation layer 9 and a nonwoven fabric of polyester fiber on it, then laminate the perlite particles and the phenol foam raw material, and then the same nonwoven fabric as above. Stack the
An adhesive, a 60-micron lead foil, a resin, and a clad steel plate 2 having a structure of a steel plate having a thickness of 0.35 mm were laminated in this order and cured to be integrally formed. The density of this sandwich plate A is 10
0 kg / m ³ , the fire resistance passed the JIS-A-1304 fire resistance 1 hour test, and the sound insulation was improved by about 5 to 30 dB as compared with the sandwich plate having only the foam as the core material. ..

The above description is merely one embodiment of the sandwich plate according to the present invention, and a sandwich plate A using both sides of the clad steel plates 2 as shown in FIG. 3 can be used. Further, the sandwich plate A may have the shape shown in FIGS. 4, 5, 6, 7 and 8. The separation layer 9, the inorganic lightweight aggregate 7, and the adhesive layer 10 are omitted. Further, a is a packing material.

[0019]

As described above, according to the sandwich plate of the present invention, (1) a heat-resistant, impregnating and reinforcing separating layer is interposed between the main body of the non-combustible base material clad steel plate and the core material, In addition, the mechanical strength and economical efficiency (cost) can be improved by strengthening the separation layer by the impregnation of the adhesive and the above main body. (2) Since the separation layer is a heat-resistant non-woven fabric, both the adhesive and the undiluted solution of the main body are impregnated together, and the anchor effect and the water-absorption function and the water-sprinkling function due to the chemical condensation caused by the reaction of the isocyanate with the water generated during the reaction By strengthening the adhesive force, the integration of the non-combustible base material and the core material can be promoted. (3) The separation layer can control the thickness of the main reaction system and the time during passage between fibers at the timing when the adhesive force is further improved. (4) Since the inorganic lightweight aggregate of pearlite grains is closely packed and the space of the aggregate is filled with and integrated with a phenolic foam having fire resistance, the fireproof 1-hour test of JIS-A-1304 can be passed. (5) Adiabatic property is 4 times or more that of ALC, and specific gravity is 0.
It is as light as 3 to 0.5. (6) The clad steel plate greatly contributes to the improvement of vibration isolation and sound insulation, and also contributes to the improvement of strength. There are features and effects.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a sandwich plate according to the present invention.

FIG. 2 is an explanatory view showing a part of the sandwich plate used in FIG. 1 by extracting and enlarging it.

FIG. 3 is a sectional view showing another embodiment of the sandwich plate according to the present invention.

FIG. 4 is a schematic view of another embodiment of the sandwich plate according to the present invention.

FIG. 5 is a schematic view of another embodiment of the sandwich plate according to the present invention.

FIG. 6 is a schematic view of another embodiment of the sandwich plate according to the present invention.

FIG. 7 is a schematic view of another embodiment of the sandwich plate according to the present invention.

FIG. 8 is a schematic view of another embodiment of the sandwich plate according to the present invention.

[Explanation of symbols]

 A Sandwich plate 1 Non-combustible base material 2 Clad steel plate 3 Metal thin plate 4 Resin layer 5 Lead foil 6 Core material 7 Inorganic lightweight aggregate 8 Phenol foam 9 Separation layer 10 Adhesive layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B32B 27/42 101 7016-4F E04B 1/94 R 2118-2E

Claims (1)

[Claims] 1. A sandwich plate in which a separation layer is interposed between a non-combustible base material and a phenol foam as a core material, wherein the separation layer is made of heat-resistant synthetic fiber and has a thickness of 0.1 m.
m or more non-woven fabric, an adhesive layer of a component that reacts with water is interposed between the non-woven fabric and the non-combustible base material, and the non-woven fabric is impregnated with an adhesive to be integrated, and the non-woven fabric and the phenol foam are integrated. At least one of the non-combustible base material that becomes the front and back materials by forming the core material with inorganic lightweight aggregate and phenol foam with enhanced fire resistance A sandwich plate characterized by being formed by a clad steel plate using lead foil inside.