JPH034658Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a siding board (hereinafter simply referred to as a board) useful as an exterior material for architecture and structures. In particular, the present invention relates to a board made of a heat insulating material having fireproof properties that can pass as a quasi-noncombustible material. Recently, additional tests for polymer composite fireproof materials are being announced in order to strengthen fireproofing properties. Of the above tests, the box test is severe for boards made of polymeric materials. Therefore, it was essential to have a board with a core material of phenol foam (about 40 g/m ³ ), and a laminate of aluminum and asbestos paper as the back material. However, in this board, the phenol foam is brittle and
In addition, since it lacks adhesive properties, adhesives or fibrous materials (non-woven fabrics,
It was necessary to interpose fibers (long and short fibers). Moreover, the phenol foam cracks due to external forces, resulting in significant deterioration of heat insulation and fire protection over the long term. Further, when a simple polyisocyanurate foam is interposed between the surface material and the phenol foam, there is a drawback that the surface material is corroded by the flame retardant of the polyisocyanurate foam and the residual oxidizing agent of the phenol foam. In order to eliminate these drawbacks, the present invention interposes a polyisocyanurate foam containing silicate between the surface material and the back material, thereby improving the fire retardancy of the board and preventing the phenol foam from cracking. This paper proposes a board that strengthens the integration and further integrates the phenol foam and the surface material through the self-adhesive properties of the polyisocyanurate foam without using adhesives, and can fully pass the quasi-noncombustible material test. be. An embodiment of the board according to the present invention will be described in detail below with reference to the drawings. FIGS. 1a to 1f are perspective views showing a typical example of the board. In the figure, reference numeral 1 denotes a surface material, which is formed by molding a thin metal plate as shown in FIGS. 5, a male connecting portion 7 having an insertion edge 6 projecting outward from the lower edge of the side wall 3, and a U-shaped connecting portion 7 formed by bending the middle of the other side wall inward and protruding outward again. A female connecting part 11 consisting of an engaging groove 8 and an extension part 10 whose lower edge 9 protrudes outward; a protrusion 12 formed as necessary; and a tongue piece 1.
3 and 14. This material is made of one type of galvanized iron plate, colored steel plate, PVC steel plate, copper plate, aluminum plate, galvanized steel plate, galvalume steel plate, enameled steel plate, etc., and at least the lower edge 9 and the back surface 10a of the extension part 10.
The rust prevention treatment 15 has been applied to the plate. The antirust treatment 15 is, for example, as shown in FIGS. 3a to 3g. That is, Fig. a shows a case where an acid-resistant, alkali-resistant, or flame-retardant corrosion-resistant coating 16 is provided on the back surface 10a, and Fig. b shows a case where a film 17 having the above-mentioned properties is adhered or heat-sealed. Figure c shows the case where the end of the waterproof sheet, which will be described later, is extended to the back surface 10a, and figure d shows the case where the adhesive 18 having the above performance is applied. Figure e shows a case where the sheet-like material 19 is adhered onto the adhesive 18 in Figure d. In addition, figure f shows a case where a thin corrosion-resistant and acid-resistant foam 20 is formed on the back surface 10a, and figure g shows a case where the surface of the material of the main body 1 is bent to form a double female connecting part 11a. It is. 21 is a silicate-containing polyisocyanurate foam (hereinafter simply referred to as foam), which mainly functions as a heat insulating material, a lining material, a cushion material, a waterproof material, a moisture proof material, a fireproof material, and an adhesive. This is done by filling the concave portion 5 using various methods. To explain further, silicate is added in an amount of 3 to 20% by weight based on 100 parts by weight of the polyisocyanurate foam raw material, and mainly contributes to suppressing smoke generation and improving fire resistance. In other words, silicate is form 2
1 or the condensed water during the reaction of phenol foam 25, which will be described later, is absorbed and released in the event of a fire, thereby suppressing smoke generation and improving fire protection. Moreover, since it also absorbs the reaction condensation water of phenol form 25, form 21
There is no reaction failure at the interface between the phenol foam 25 and the phenol foam 25, and the original performance can be exhibited. Types of the silicates include organosilicate, tetramethylsilicate, tetraethylsilicate, tetra(β-phenel)silicate, trimethylethylsilicate, dimethyldiisoaluminumsilicate, and the like. That is, FIG. 1a shows a structure in which the raw material of the foam 21 is discharged into the concave portion 5, reacted, foamed, bonded, and hardened.
Figure b shows a case in which the recessed portion 5 is filled with the foam 21 and one end of a backing material to be described later is interposed between the clamping protrusion 3a of the male connector and the back surface 21a of the foam 21. In addition, unlike the foam 21 when the foam 21 is molded into a predetermined shape or hardened as shown in a and b above, Figure c shows the back side of the foam 21 in a free foaming state, or when the raw material of the foam 21 is in the middle of foaming. This is a case where the phenol foam raw materials in the middle of reaction and foaming are laminated. In FIG. 1d, the foam 21 is filled into the concave portion 5, the back surface thereof is covered with a perforated painting material 22, the molded phenol foam is adhered with polyisocyanurate foam, and the back surface is covered with the painting material 22. Figure e shows the case where one end edge of the material 26 is fixed via the adhesive 24, Figure e shows the case where the surface material 1 shown in Figure 3g is filled with the foam 21 in the same manner as Figure A, and Figure f shows the case where the foam 21 is filled in the same manner as Figure A. This shows the case of a board in which the art material 22 is pushed into the phenol foam 25 side in a blind hole shape, and the polyisocyanurate foam 21 and the phenol foam 25 are integrated using this. Note that 23 and 24 in figures c and d are adhesives, for example, foam 2
This also includes a structure in which a part of 1 flows out and the flowed foam also functions in the same way as the adhesive described above. Of course, the distribution of the adhesives 23 and 24 is not limited to the case where they are uniformly distributed over the entire surface of the back surface 10a, but may also be present partially, and the adhesives 23 and 24 may be provided on the back surface 6a of the insertion edge 6 as necessary. be. 2
5 is a phenol foam that functions as a bulge, mainly on the back side of the foam 21,
In particular, it is integrally laminated to a thickness H over the entire surface excluding the vicinity of the male connecting portion 7 within a range of ΔW, the lower edge 10, and the back surface of the extension portion 10. This form 25
improves the fire and heat resistance of the board and reduces smoke generation.

【table】

[Table] ○A was a reference value.
What has been described above is only one embodiment of the board according to the present invention, and includes foam 21, phenol foam 25, pearlite grains, shirasu balloons, micro balloons, glass balloons, styrene beads, etc.
The foam 21 and phenol foam 25 may have a structure in which one or more types of aggregate such as silica sand are added, or a fire retardant such as borax or sodium metaborate is added. As mentioned above, according to the board according to the present invention,
Since ferrous materials can be mainly used, phenol foam has fire resistance, heat resistance, and low smoke emission, and polyisocyanurate foam has self-adhesive properties.
It has the characteristics of being able to effectively utilize fire resistance, heat resistance, and low smoke emission. Furthermore, since polyisocyanurate foam is used to bond the surface material and phenol foam in the board, there is an advantage of low cost. Furthermore, the insulation and fireproofing properties of the joints between the boards have been significantly improved. Furthermore, the brittleness of phenol foam is greatly reduced by the cushioning properties of polyisocyanurate foam, which has the characteristic of maintaining heat insulation and fire retardant properties over a long period of time. Furthermore, the surface material has a feature that there is no risk of corrosion by polyisocyanurate foam or phenol foam.

[Brief explanation of drawings]

Figures 1 a to f are perspective views showing one embodiment of the siding board according to the present invention, Figures 2 a and b are perspective views showing an example of the main body of the board, and Figures 3 a to g.
FIG. 2 is an explanatory view showing a state in which predetermined portions of the main body according to the present invention have been subjected to acid-proofing treatment and rust-proofing treatment. DESCRIPTION OF SYMBOLS 1... Main body, 15... Rust prevention treatment, 21... Polyisocyanurate foam, 25... Phenol foam, 26... Back material.

Claims (1)

[Scope of utility model registration request] A male connecting part having a rectangular decorative surface and both ends of the decorative surface bent downward to form two side walls with a concave cross section, one end edge of the side wall protruding outwardly and having an insertion edge. The other side wall is bent inward in the middle and protrudes outward again to form an engagement groove having a U-shaped cross section, and the lower edge of the engagement groove has an extension portion protruding outward. A metal surface material consisting of a rust-treated female connecting portion, a polyisocyanurate foam containing silicate filled in the concave portion of the surface material, and a portion near the male connecting portion on the back side of the polyisocyanurate foam. Excluding the lower edge of the engagement groove, the bulge made of phenol foam laminated on the back surface of the extension, the entire back surface in the longitudinal direction of the bulge, and the back surface near the male connecting portion of the polyisocyanurate foam. A siding board characterized by being coated and integrally formed.