JPH0123800Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a fire-resistant and heat-insulating panel that strengthens the integration of a noncombustible base material and phenol foam, and suppresses brittleness, cracking, and peeling of the phenol foam. BACKGROUND ART With the spread of energy-saving materials, heat-insulating building materials, particularly composite building materials with fire-retardant and heat-insulating properties, have been proposed. Its main structure is a composite plate in which phenol foam is integrally laminated on a noncombustible base material. However, in this composite plate, the drawbacks of the phenol foam itself directly appear in the physical properties of the composite plate, so there was a disadvantage that it lacked practicality. In order to eliminate these drawbacks, the present invention interposes a special separation layer between the non-combustible base material and the phenol foam, effectively utilizing the fire-resistant and heat-insulating properties of the phenol foam, while also eliminating the weak points of brittleness, cracking, and Low adhesive strength, weak compressibility, acidity,
We propose a fire-resistant and heat-insulating panel that suppresses DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fire-resistant and heat-insulating panel (hereinafter simply referred to as a panel) according to the present invention will be described in detail below with reference to the drawings. Figures 1 and 2 are explanatory diagrams showing typical examples of the above-mentioned panels. 1 is a noncombustible base material made of metal plates (iron, aluminum, copper), and mainly consists of a surface material, a decorative material, and a back surface. Functions as a material. Note that the cross-sectional shape is arbitrary. 2 is a special separation layer that is thinly laminated and integrated on the back surface 1a of the non-combustible base material 1, and mainly serves as a cushion material, an adhesive strengthening material between the non-combustible base material 1 and the phenol foam 6,
It serves as an insulating material, a heat insulating layer that does not undergo dimensional deformation under high heat, does not crack, and as a reinforcing material for the phenolic foam 6. This special separation layer 2 has at least one type of resin component 3 having elasticity, adhesiveness and fire resistance, non-combustible fibers 4 as reinforcing materials, and inorganic porous particles 5 distributed therein. The resin component 3 is an isocyanurate resin, and the nonflammable fiber 4
It consists of short fibrous asbestos fibers, rock wool fibers, glass fibers, etc. The inorganic porous particles 5 include pearlite particles, shirasu balloons,
It is calcined vermiculite, etc., and the particle size is 1 mm to 5 mm.
It is about mm. To explain further, the special separation layer 2 is formed on the back surface of the noncombustible base material 1 with nonflammable fibers 4 and part of the inorganic porous particles 5 protruding from the resin component 3.
It is to be laminated on a. This integrates the phenol foam 6 and the non-flammable base material 1 through the adhesiveness of the resin component 3, and the non-flammable fibers 4 and inorganic porous particles 5 that protrude from the resin component 3 are embedded into the phenol foam 6. This is to increase the adhesion area between the special separation layer 2 and the phenol foam 6, and to strengthen the integration through the anchor effect. Furthermore, since a portion of the noncombustible fibers 4 and the inorganic porous particles 5 are embedded in the phenol foam 6, it also contributes to improving the brittleness of the phenol foam 6.
In addition, the noncombustible fibers 4 and inorganic porous particles 5 serve as a skeleton when the resin component 3 and phenol foam 6 change into a carbonized layer when the panel is exposed to high heat, and serve to prevent cracks and dimensional deformation. It is something. In addition, since the special separation layer 2 separates the phenol foam 6 and the non-flammable base material 1, it prevents the acidic components of the phenol foam 6 from coming into contact with the non-flammable base material 1, thereby preventing corrosion of the non-flammable base material 1. It also has the function of preventing rust. Reference numeral 6 is a phenol foam, which is formed by foaming a resol type liquid resin raw material in an in-situ foaming manner to form a predetermined foam. 7 is a sheet-like material that spreads the phenol foam 6 raw material and also functions as a mold release member. The sheet material 7 is laminated with one or more of metal foil (aluminum, copper, lead, iron), non-flammable nonwoven fabric, asbestos paper, gypsum paper, kraft paper, synthetic resin film, etc. . Next, a method for manufacturing the fireproof and heat-insulating panel will be explained. First, the nonflammable base material 1 is a 0.27 mm colored galvanized iron plate with flat front and back surfaces, and the resin component 3 is a low-foaming polyisocyanurate resin, such as Millionate MR-100 (manufactured by Nippon Polyurethane Co., Ltd.) as the isocyanate component. ) 189 parts by weight, the polyol has a functional group number of 4, a molecular weight of 498, an OHV of 498, and an equivalent ratio of 498. 111 parts by weight of the raw material and an appropriate amount of trimerization catalyst are set to foam approximately 1 to 4 times. be. In addition, the nonflammable fiber 4 is made of glass fiber having a length of 3 mm and contains 10 parts by weight. Furthermore, the raw material for Phenol Form 6 is a resol type resin with a viscosity of 1800 CPS/20°C, non-volatile content 73-85%, free phenol 4.6%, free formalin 0.1%, and moisture 7.
-8%, specific gravity 1.1-1.3 (20°C). In addition, the above-mentioned Phenol Foam 6 raw material contains 2 parts by weight of a silicone type such as Tween 80 (trade name, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) as a foam stabilizer, and Freon 11 and Freon 113 in a 50/50 ratio as foaming agents. 20 parts by weight of the mixture and 25 parts by weight of a mixed aqueous solution of para-toluenesulfonic acid and phosphoric acid as a curing agent were prepared. The sheet-like material 7 is a sheet-like material made by laminating asbestos paper (thickness: 0.1 mm) onto aluminum foil (thickness: 0.1 mm). Therefore, first, the colored galvanized iron plate 1 is heated to 60°C, and the special separation layer 2 raw material mixed with glass fibers and polyisocyanurate resin is uniformly discharged onto the back side 1a of the plate 1, so that the glass fibers are in a random state like flocking. It has a prominent surface,
And the thickness is about 1mm. The foaming ratio of this special separation layer 2 was 2 times, and the density was 100 kg/m ³ . Next, the above-mentioned raw material for the phenol foam 6 is discharged onto the surface of the special separation layer 2 , and the sheet-like material 7 is laminated thereon, and after being spread through a spreading device such as a roller (not shown), the material is placed in a cure oven. (not shown) and was cured for about 2 minutes before being removed. The form density of this panel is 50Kg/m ³ ,
The total thickness was 20mm. Next, the flame retardance of this fire-resistant and heat-insulating panel was determined by JIS-
The surface of A-1321 was tested and compared with a panel without special separation layer 2 . The results were as follows.

【table】

[Table] The difference between (a) and (b) is that the additive material of special separation layer 2 is (a)
are glass fibers, (b) are pearlite grains with a diameter of 3 mm, and the distribution amount is the same as (a). Note that (c) passed the test, but when the colored galvanized iron plate 1 was peeled off after the test and the phenol foam 6 was observed, it was found that many large cracks were irregularly formed. In addition,
This crack is not observed in the judgment of the above test because the surface material (colored galvanized iron plate) is present in the upper layer of the phenol foam 6. On the other hand, in Examples 1 and 2, although the resin portion 3 of the special separation layer 2 and the phenol foam 6 near the special separation layer 2 were carbonized,
The glass fiber used as the noncombustible fiber 4 and the pearlite grains as the inorganic porous grains 5 were embedded in both carbonized layers and formed a skeleton, with no large cracks and only a few small cracks. In addition, when the adhesive strength of the colored galvanized iron plate, which is the noncombustible base material 1, and the phenol foam 6 was measured, it was found that Example 1,
In No. 2, the adhesive strength between special separation layer 2 and phenol foam 6 was 2100 g and 1900 g. On the other hand, the weight of the comparative example was 1000g. In addition, as a measurement method, before discharging the raw material of phenol foam 6, 5
A through hole of mmφ is drilled, the hole is sealed with tape on the surface, and the foam material is discharged. After the product is manufactured, the fireproof and heat insulating panel is fixed horizontally and the hook of the spring scale is pulled. The strength is defined as the value when the colored galvanized iron plate is peeled off from the phenol foam 6 by stretching it vertically. What has been described above is only one embodiment of the fire-resistant and heat-insulating panel according to the present invention. For example, as shown in FIG. You can also do it. As described above, the fire-resistant and heat-insulating panel according to the present invention has the feature of fully exhibiting the fire-resistant and heat-resistant properties of phenol foam. In addition, the weak adhesive strength of phenol foam,
It has the characteristics of being able to significantly suppress weak compressibility, rusting due to acidity, and cracking under high heat.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory diagrams showing one embodiment of the fireproof and heat-insulating panel according to the present invention, and FIG. 3 is an explanatory diagram showing another embodiment. 1...Nonflammable base material, 2 ...Special separation layer, 5...
Inorganic porous grain, 6...phenol form.

Claims (1)

[Scope of utility model registration request] In a fire-resistant, heat-insulating panel in which a special separation layer is interposed between a non-combustible base material and phenol foam, one or more of non-combustible fibers and inorganic porous particles are added and mixed with isocyanurate resin as the special separation layer, and A fire-resistant and heat-insulating panel characterized by having noncombustible fibers and inorganic porous particles partially protruding from an isocyanurate resin.