JPS6277931A - Refractory heat-insulating panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fireproof heat insulating panel (hereinafter simply referred to as "panel") used as a fire prevention material for building materials and the like.

More specifically, the present invention relates to a panel in which heat-expandable inorganic particles that foam at high temperatures are arranged between two films and individually encapsulated sheets are arranged within the structure of a synthetic resin molded product.

Conventionally, various methods have been published to protect building materials from fire, but the applicant previously proposed an "improved sheet and a fire-resistant insulation panel using the same" (Japanese Patent Application No. 5L
-66724) invented a fire-resistant heat insulating panel containing an improved sheet in which heat-expandable particles that foam at high temperatures are adhered to the sheet at appropriate intervals in the form of drops or lines in a synthetic resin foam. However, it was later discovered that this method had the following drawbacks in its implementation.

In other words, a sheet in which foamable particles that foam at high temperatures are adhered in a droplet or linear shape is protected by a protective layer, but the foamable particles are highly corrosive, so if the protective layer is not even slightly pinned. If there are holes or cracks, a component of the particles will leak out through them, causing corrosion of the surface material.Also, even if there are no pinholes or cracks, the coating of the protective layer will be damaged. It is technically difficult to make the coating uniform, and over many years, uneven coatings expand and contract due to temperature changes, causing small cracks and causing similar problems.

The present invention eliminates the above-mentioned drawbacks and provides a panel that is free from deterioration in fire resistance and fire protection performance due to heat-expandable inorganic particles and corrosion of the surface material over a long period of time.

The panel according to the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an embodiment of a panel A according to the present invention, in which 1 is a surface material, 2 is a synthetic resin molded product, 3 is a liner material, and 4 is a sheet.

To explain further, the surface material 1 is a thin metal plate, such as a colored steel plate, an aluminum plate, a stainless steel plate, a copper plate, etc., and is formed into a predetermined shape as shown in FIG. be. The synthetic resin molded product 2 is filled and laminated on the back side of the surface material 1, and is made of synthetic resin foam, such as polyurethane foam, polyisocyanurate foam, phenol foam, urea foam, etc., or various additives thereto. It functions as a core material of panel A and also functions as a heat insulating layer. The liner material 3 constitutes the back surface of the panel A, and is made of existing sheet materials such as kraft paper, gypsum paper, synthetic resin film, metal foil, and nonwoven fabric. Furthermore, as shown in FIG. 2, the sheets 4 are arranged in an appropriate number of rows and at appropriate intervals (usually 10 to 20 mm) encapsulated heat-expandable inorganic particles (hereinafter simply referred to as inorganic particles)
4c are evenly scattered and enclosed. To further explain, the inorganic particles 4C are borates such as borax and sodium metaborate, silicates such as sodium silicate and sodium metasilicate, or phosphates such as dibasic sodium phosphate and sodium metaphosphate. one type alone or two
It is made by molding a mixture of two or more seeds into granules, or it is made by impregnating pearlite particles with this chemical, and when heated to high temperatures, it begins to expand and forms a dense foam layer with strong fire resistance. It has the property of forming a As shown in FIG. 2, these inorganic particles 4C are
Even if the sheet 4 is placed in the panel A, it is possible to distribute it uniformly by being enclosed and held by the films 4a and 4b. Therefore, when the panel A is heated from the outside during a fire, etc., the inorganic particles 4C start foaming and fill the voids in the surrounding burned and carbonized synthetic resin molded product 2, and eventually The foams interlock to form a uniformly dense ceramic-like foam layer with strong fire resistance, so this foam layer can prevent the heat of the fire from reaching the back side of Panel A, creating a fire-resistant insulation. It can fully demonstrate its function as a panel. In addition, since the inorganic particles 4c are encapsulated by the film 4as4b, there is no contact with the outside air, and the performance can be maintained for a long period of time. It's nothing. As shown in FIG. 3, the sheet 4 has small holes 4d of an appropriate size between the inorganic particles 4c individually sealed in the sheet 4.
You can also use a punched one. In this case, when manufacturing panel A, the raw material for the synthetic resin molded product 2 can pass through this small hole 4d and fully reach the back surface of the facing material 1, making it easier to integrally mold panel A. It can be done.

As mentioned above, according to the panel of the present invention, inorganic particles are evenly distributed in a planar manner within the structure of the synthetic resin molded product, so in the event of a fire, a uniform fire-resistant foam layer is formed inside the panel. This can prevent the intrusion of fire heat.

Furthermore, since the inorganic particles are encapsulated between the films, there is no possibility that the inorganic particles will be produced unevenly distributed in some parts of the panel. Moreover, since the inorganic particles are isolated from the outside world by the film, their performance can be maintained over a long period of time, and the surface material and synthetic resin molded product will not deteriorate due to corrosion. It has the following characteristics and effects.

[Brief Description of the Drawings] Fig. 1 is an explanatory diagram showing a fireproof insulation panel according to the present invention, Fig. 2 is an explanatory diagram illustrating a sheet, which is one of the constituent materials, and Fig. 3 is an explanatory diagram showing other implementations of the sheet. It is a perspective view showing an example. DESCRIPTION OF SYMBOLS 1...Surface material, 2...Synthetic resin molded product, 3...Liner material, 4...Sheet, 4C...Heat-foamable inorganic particles, A...Fireproof insulation panel.

Claims (1)

[Claims] (1) A surface material made of a thin metal plate etc. and a synthetic resin molded product,
In a panel formed by laminating liner materials, a sheet in which heat-expandable inorganic particles that foam at high temperatures are arranged and encapsulated with a gap between two upper and lower films is used to form a synthetic resin molded product of the panel. A fireproof insulation panel characterized by being installed within an organization.