JPS5856848A - Fireproof laminate and its manufacture - 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 laminate and a method for manufacturing the same. This article relates to a 9-layer body formed with a fire-retardant property and a method for manufacturing the same.

Laminated products with hard plastic foam as the core material are generally called T/P inch panels or laminate zede, and have excellent heat insulation and light structural properties.

Due to its design properties, it is widely used as insulation materials, building materials, structural materials, etc.

BACKGROUND ART In recent years, as residential buildings have become higher and more densely packed, demands have increased for building materials to be lightweight, easy to construct, and fireproof.

In order to achieve these objectives, efforts have been made to improve the fire retardancy and heat resistance of the hard Zo2stex foam itself used as the core material. Also, as a laminate, there is a method using a metal shell as a face material as in Japanese Patent Application Laid-Open No. 47-16585, a method using a glass fiber core as in U.S. Pat. There are methods such as dispersing it in materials. This method of manufacturing a composite by dispersing mineral fibers (inorganic fibers) such as glass fibers in a foam is a well-known technique disclosed in Kosho 35-13226. It is certainly possible to some extent to improve the performance of the laminate, such as its structural strength, by reinforcing the core material with inorganic fibers, but this can lead to complex manufacturing, lack of product reproducibility, and poor product uniformity. It has not been put into practical use due to problems such as shortages and rising prices.

The present invention solves these problems and provides a 1T round product.

Ru. The present invention was completed as a result of extensive research into the glass fiber used to reinforce the core material and the method for mixing it into the core material. That is, in the present invention, in a fireproof laminate consisting of two parallel face materials and a core material, the core material is made of heat-resistant hard plastic with a resistance of 7 ohms, and the reinforcing material of the core material is made of glass fiber filament. A glass fiber mantle is formed by depositing a plurality of struts 2/d in a loop shape in a dam, and the struts 27 of the reinforcing material are distributed approximately evenly over the entire area of the core material. The present invention relates to a fire-retardant laminate characterized in that the strands are dispersed in a core material and are arranged three-dimensionally in a core material and intersect with each other at an arbitrary three-dimensional angle f, and a method for manufacturing the same.

The present invention will be explained in detail with reference to the drawings showing examples.

Two parallel facing materials (2), (3) to the core material (1)
A glass fiber mat (4) is supplied, which is made by depositing a plurality of strands of glass fiber filaments as a reinforcing material in a loop shape on the lower surface material (2). The heat-resistant hard plastic foam stock solution is discharged onto the glass fiber mat (4) by a stock discharge device (5) supplied from a supply device (not shown). The above hard plastic foam stock solution
is expanded and foamed, adhered to the upper surface material (3), hardened and cured by a double conveyor (6), and then transferred to a cutting device (7).
The product is then cut into predetermined dimensions. The glass fiber mat (4) supplied here is produced by two pairs of stretching rolls (8
) and (9), the fibers 27F (45) are stretched and opened in the length direction according to a predetermined stretching ratio.

In addition to this method, manual defibration may also be used, and there are no limitations. At this time, the surface speed of the stretching roll (9) must match the surface speed of the double conveyor (6).The speed of the double conveyor (6) is usually 2 to 100 m/m, preferably 5. ~20 m/Ilj 1, which should be determined in relation to the foam curing speed of the rigid plastics foam. Stretch roll (8), (9) company, 7 Ricoh/, polyurethane on the surface.

A roll coated with a flexible male rubber material such as synthetic tsum, with a diameter of 50 to 5005 m, preferably a thickness of 100 to 350 m.
It is preferable that the outer diameters of the two pairs of rolls are the same. A pair of rolls (for example, the upper and lower rolls in (8)) Fi should rotate at the same speed, and each should be equipped with a decelerator and an accelerator so that the rotational speed can be changed. In order to draw the fiber mat with these two pairs of rolls, the surface speed of roll (9) is made higher than that of roll (8), and the two pairs of rolls (8) and (9) are drawn. Allow the fiberglass mat (4) to be stretched during the passage. That is, for the surface speed of roll (8), roll 9
Increase the II surface speed by 3 to 1001, preferably Fi10.
By increasing ~5096, the glass fiber mat (
4) As shown in Figures 4 and 5, the strands (the chrysanthemums are unraveled in the length direction and uniformly dispersed in the core material (1). You can see that the interval is getting longer #! In figure 5. Arrow #
i indicates the direction of stretching. In this way, the stretching roll (8),
The glass fiber mantle (4) drawn by +9) is supplied onto the lower side material (2), and the ejection device 1 (
5) The hard plastic foam stock solution is discharged. As this stock solution foams and expands, 111 strands are formed into 9 strands/d (4 strands are IIgk and fixed in the above foam by curing of the above foam 45a, core material (1) is dispersed approximately evenly over the entire area, and three-dimensional K (no horizontal one) in the core material (1).
This means that they are arranged and intersect with each other at an arbitrary solid angle. An example of what was obtained in this way is shown in the second
Figure 1 shows the cross-sectional view. Also, A-Alli in Figure 2
The surface is shown in Figure 3. These a! ! As can be seen from 1riji, the strands (45) are almost evenly distributed throughout the core material (1), and are arranged three-dimensionally in the core material so that they are mutually separated at an arbitrary solid angle. It can be seen that they intersect. Also, as shown in Fig. 3, it can be seen that the strands (4) deposited in a loop shape are dispersed in a dam/dam.

As a glass fiber mat used as a reinforcing material, there is a glass 7-INO mat shown in Japanese Utility Model Publication No. 43-234, which is functionally and structurally satisfactory. That is, in the present invention, the glass fiber mat refers to a glass fiber mat in which a plurality of struts/P made of bundled glass fiber filaments are deposited in two random loop shapes, and is generally a continuous strand mat (C, 8 ,M)
This is called a filament, and is essential when concentrating filaments and depositing them into a cloak-like shape. ! Depending on the requirements, thermoplastic or thermosetting resins can be used.

It is desirable that the amount used be as long as possible and as little as 1%.・For the total weight of the glass fiber used, it must be 103G or less, preferably Fi5 or less! ! There is one. Specific materials for /R in/- include polyester resin, phenol resin, epoxy resin, urethane resin, melami/resin, and the like. In addition, if you use glass fibers that have been subjected to surface treatments such as 7-coat treatment, chromium treatment, and heat deoiling treatment, the binding effect of the glue will increase. As a result, the amount used can be reduced by 94//-, and the compatibility with the core material is improved, resulting in a good dispersion state of glass fibers in the core material. The basis weight of glass fiber varies depending on the final thickness of the laminate and its purpose, but when using a glass fiber with a thickness of 20 to 100 meters as a building material,
50-600g/ba, preferably 100-3001ii
1/rrX is good. The weight of glass fiber to core material is 3
-20, preferably 5-101. 1 less than 3 inches,
It is difficult to impart sufficient fire-retardant structural strength f to the laminate.If f exceeds 20%, it is preferable in terms of fire-retardant performance, but it increases the amount of glass fiber used and makes the laminate stronger. to increase prices.

As the amount of Norx fiber used increases, the apparent density of the core material increases, which leads to an increase in the amount of hard Zo2 Stex foam used, leading to an increase in the price of the laminate, which is not desirable. Considering these points, the weight of the glass fiber is preferably 3 to 20%, preferably 5 to 10%.

The heat-resistant hard plastic 7 ohm used as the core material is liquid at room temperature, but can be used if it is foamed and hardened when mixed.

Specifically, there are hard urethane foam, urethane/modified ink annulate 7 ohm, ink annulate foam, cal-diimide foam, polyamide-imide foam, phenol foam, etc., but there are not 1% of them that are motivated by these examples. . The apparent density of these hard Zo2 Snax foams is 20 to 9/i or more, preferably 25 to 9/II, taking into account fireproofing performance, *structural strength, dimensional stability, etc.
I! It is desirable that the value be 1 or more.9 Considering the price, it is natural that the lower the value f, the more advantageous it is.

The parallel surface material is metal plate 1 and asbestos paper.

A material made of a layer of metal foil and asbestos paper can be used. Considering economy and workability, metal foils, especially aluminum foils, iron foils, steel foils, etc. are preferred, and if necessary, rust-proofing, corrosion-proofing, etc. 15! You can also apply surface processing. If necessary, a slight uneven pattern (embossed pattern) can be added to give a design effect. Considering the fire retardant performance of the heavily laminated body of metal foil, 10Rn or more, preferably 2
0Rn or more is desirable.

Temporary laminated body manufacturing device that can be used in the present invention (2-laminate device)
GAX fiber is added to the normal hard urethane foam L-de manufacturing equipment! If you add a sheet stretching device, it will be even better in advance.
It is also possible to stretch the glass fiber mat in a separate stretching device and supply it to the above-mentioned hard urethane/foam I-r manufacturing device. In this case, the defibrated glass fiber mat is used.

Care must be taken to insert craft paper, etc., while wrapping the pieces so that they do not get tangled with each other.

Therefore, according to the present invention, a fireproof laminate having the following effects can be obtained. That is, ■ excellent fire prevention performance. Passed the JI8A-1321 exam at Sea Fuel Level 2. The glass fiber mats are evenly distributed over the entire area of the core material and are arranged in a three-dimensional manner, so that the laminate is destroyed by flame! ! ! It prevents cracks in the carbonized layer even when the surface is heated, and this crack-preventing effect can prevent the spread of flames. ■High structural strength. 1. Glass fiber mats are arranged three-dimensionally. It acts strongly against forces from any angle and has no directionality of strength. ■The core material has a low density of 7 ohm and is economical. Since the glass fiber mat is almost evenly distributed over the entire area of the core material, the reinforcing effect has good optical properties.
They are intertwined at arbitrary solid angles in a dam and loop shape and dispersed approximately evenly over the entire area of the core material, resulting in good one-dimensional stability. %J, t=150'CX24 hours, 70 DEG C., 951 RH/48 hours, -30 DEG C.X48 hours 1 also has good dimensional stability. (2) Since it prevents cracking as mentioned above, it has excellent flame resistance, and the through holes will not close even when exposed to a 1000°C flame. (2) Furthermore, the above-mentioned effectiveness can be achieved without impairing the heat insulation properties.

According to the method of the present invention, the reproducibility and uniformity during the production of a laminate are excellent, and it is effective in contributing to cost reduction. That is, by using a certain amount of nine-gas fiber mat that is stretched and defibrated at a stretching rate of -1, the resistance of the entangled fibers is reduced;
Impregnation with 7 ohm stock solution 1. Easy to control foam expansion and curing, with good reproducibility. Also available as a glass fiber mat! ? Since pine is used, there is less loss due to scattering during handling, and it is possible to mix exactly the right amount into the core material.

Thus, one fire-retardant laminate of the present invention has JI8A-13
It passes 21g flammability class 2 (quasi-nonflammable material) and is widely used as a building material. Due to its high structural strength and high dimensional stability, it can be used as a high-I heat insulating material, for example, as a heat insulating material for a solar water heater collector, a heat insulating material for a hot water storage tank, etc. Of course, it can also be used in fields in which conventional laminates are used, such as insulation materials (cold insulation materials) for refrigerated warehouses and frozen warehouses, and insulation materials for ships.

Next, one embodiment of the present invention will be described with reference to examples. Of course, the present invention is not limited to this example.

Example 1-3 Using urethane modified isocyanurate foam with the following formulation, Viking 13ngilye@r*ing
Co, produced $1 horizontal 2minator 1 laminate (
Conveyor speed 5 groups/1lk11f'l) I Liol* 100 parts by weight Silicone oil 3N Potassium acetate 4.51) Li I Roromono each Lorometa y120 #crude MDI**
507 1 fist 1,2 Zorobire/glycol as initiator to add Ete V/Okiku P40 mole, Zorozeshi/Okikudo 60 mole ether polyol't%
Primary hydroxyfur group content: 7 to 1-hydroxypropoxyl value: 350
Of things.

Bottle/polymethylene stream Crude product of phenylene polyincanate! , with 31 free isocutinates.

The glass fiber mat used was one made of Co/Teinua Sut 2 Tomanut and given a stretching roll of 1.25 mm. 30 micro/meter aluminum foil was used for both the top and bottom surfaces. The thickness of the obtained laminate is 35
All of them would probably pass the semi-flammability test.

Comparative Example 1 A similar test was conducted except that no f5I fiber mat was used. The laminate was manufactured in the same way as in Example 1.

Examples 4 to 6 Laminated bodies were manufactured in the same manner as in Example 1, except that 30 micrometer D iron foil (galvanized) was used for both the upper and lower layers. The IL difference of the laminate is 50.65 *
There are 80 m'l'.

Example 1 Example 2 Example 3 Comparative Example 1 Example 1 Overall thickness of body structure (■) 35 35 35
35 50 side material 30pjA 30tOJ
, 30xA130μA130tt Gacus fiber makto weight (Ii/m) 150 100 50
None 100 glass content (112B
9.7 4.9 0 7゜7 Om Density (Y/Z) 2&J3 28.7 29.1 2
8.1 28 Semi-flammability test 39(-〇(: 10((na1) Judgment Pass Pass Pass Fail Go4 Moxibustion penetration time (flame resistance) (minutes) 30
or more 30 or more 30 or more 20 30J3ψ method stability J l l 231- profit 4! ii! Example 5 Example 6 Remarks (Test Method) 6
5 80 Iron foil 304 30μ iron foil 100 100 1 5.6 4.5 2 27.5 27.3 JISA-9
514JISA-1321 15) 42 (48) 55 (57) 29) 1
2 (45) 28 (53) () (Additional test (drilling)) 23 (17) 26 (15) Test results ``Yes'' None None Each Pass Pass 30 or above 30 or above U.S. Bureau of Mines Law (OK
OK (OK OK (OK OK) From the core of the laminate obtained in Example 6, 40x40x4
Three test pieces of No. 0 parrot were taken, and the compressive strength was measured in accordance with JI8A-9514. The result is the next pass 1? be.

1 direction, 1.5 o'clock/i (1,8 o'clock Zj yl axis 1.3 # (1,01) 7.1 fist pot 1゜4IC
1,01) Thickness direction of the pot*** Width direction of the product/Length direction of the product on the pot skewer (direction in which the conveyor advances at # speed) Similar Km layered body without using the Kaken*Hadaga2S fiber makto Shows the compressive strength when manufactured. (Form Secret Jacques 27
．． 1 kll/vt).

This shows that there is no particular difference in strength in the three directions.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of carrying out the method of the present invention, Fig. 2 is a cross-sectional view showing an embodiment of the laminate according to the present invention, Fig. 3 is a cross-sectional view along line AA of Fig. 2 of Fig. 3, and Fig. 4 is a cross-sectional view of the laminate according to the present invention. 1. An enlarged partial view of the glass fiber mat used (before stretching), FIG. 5 shows the same as above (stretched bale). (1)...Core material, (2)...Face material (lower side), (
3)...- material (upper II), (4)... reinforcing material (glass fiber mat), (41-... strand, (5
)...-Discharge device, (6)...Dazorco/Bear, (7
)... Cutting device, (8)... Stretching roll, (9)...
...Extended patent applicant Kokoku Chemical Industry Co., Ltd. Representative Patent Attorney Tadashi Yasuhara 2 Masaru Asano Mido An Bong Masayoshi Brother-in-law 1
Figure 2, Figure 2, Figure 3, Figure 4, Figure 5.

Claims (1)

[Claims] (l) In a fire-retardant laminate consisting of two parallel face materials and a core material, the core material is a heat-resistant hard resin foam 1.
The reinforcing material for the skeleton core material is formed from a glass fiber mat made by stacking a plurality of strands of glass fiber filaments together in a croup shape, and the strands P of the reinforcing material are A fire-retardant laminate characterized in that the s)9/l' are distributed substantially uniformly over the entire area of the core material, and are arranged three-dimensionally in the core material and intersect with each other at arbitrary three-dimensional angles. body. (2) In a method for producing a fire-retardant laminate consisting of two parallel face plates and a core material, a plurality of struts made of bundled glass fiber filaments that serve as reinforcing materials for the core material are placed on the lower face plate. A glass fiber mat strand P, which is made by depositing /P in a loop shape, is pre-stretched in the length direction and defibrated before being supplied, and then a stock solution of hard plastenx foam, which will become the core material, is supplied. As the stock solution expands, the defibrated strands P are dispersed almost uniformly over the entire area of the core material, and the skeleton strands P are arranged three-dimensionally in the core material to form an arbitrary shape. A method for producing a fireproof laminate characterized by intersecting each other at a solid angle