JPS6252187A - Composition for construction material and formed body - 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 (Field of Industrial Application) The present invention relates to a composition for building materials, particularly to a composition for building materials and a molded building material having excellent fire resistance, heat insulation, sound insulation, impact resistance, etc.

(Prior Art) In recent years, various improved compositions for building materials have been developed in response to the needs for building weight reduction, earthquake resistance, fire resistance, etc.

Although traditional wood is relatively lightweight, it is flammable;
Concrete has a high strength (non-combustibility), but is heavy, brittle (11°), and has a flexibility of 11 degrees. are organic foam adhesives, non-silicon foam materials (e.g. Foam Conc 17-), Nor<-Lite, Vermicelli)),
For flame resistance, non-refractory powders or inorganic binders are used, and for flexibility, organic soft polymer resins and flexible fibers are mixed and used. We are trying to achieve this.

(Problems to be Solved by the Invention) As mentioned above, although efforts have been made to improve materials in accordance with various purposes of use, materials that satisfy many of the characteristics desired as building materials have not yet been manufactured. The reason for this is, for example, the fundamental difference in the physical properties of inorganic and organic materials, and if inorganic materials are selected to increase fire resistance or strength, weight reduction and flexibility cannot be expected; If an organic material is selected to improve fire resistance or flexibility, it cannot be expected to increase fire resistance or strength, which is a contradiction in terms of common technical knowledge.

However, as a result of many studies, it has been found that even inorganic materials are not sufficient, such as making them lightweight by foaming them or adding visibility by adding flexible inorganic fibers such as asbestos. Compositions for building materials that are of excellent quality are being provided.

(Means for Solving the Problems) The present invention has been made in view of the above problems, and aims to provide a composition for building materials that has many properties desired as a composition for building materials. . That is, the inventor has 12. As a result of thorough research, it is lightweight, fireproof, heat insulating,
We have developed a composition for building materials that is excellent in many necessary properties such as flexibility, sound insulation, impact resistance, earthquake resistance, chemical resistance, and durability. , scaly mica, borax, and an organic adhesive in a specific ratio, or in addition to these, various glazes are blended and filled in a specific amount or in a specific layered structure and then molded.

The present invention comprises: (1) 20 to 65 parts by weight of cement and 8 parts by weight of aggregate;
4.5 to 14 parts by weight of raw coke, 4.5 to 9 parts by weight of scaly mica, 5 to 15 parts by weight of borax, and 20 to 15 parts by weight of organic adhesive per 100 parts by weight of the mixture consisting of 0 to 35 parts by weight. (2) a total of 100 parts by weight of a mixture consisting of 20 to 65 parts by weight of cement and 80 to 35 parts by weight of aggregate; 4.5 to 14 parts by weight, scaly mica 4
5 to 9 parts by weight, 5 to 15 parts by weight of borax, 5 to 30 parts by weight of an organic adhesive, and a total amount of 5 to 30 parts by weight of a glaze consisting of a low melting point glaze, a medium melting point glaze, and a high melting point glaze. and (3) 4.5 parts by weight of raw coke per 100 parts by weight of the mixture consisting of 20 to 65 parts by weight of cement and 80 to 35 parts by weight of aggregate.
~14 parts by weight, 4.5 to 9 parts by weight of scaly mica, 5 to 15 parts by weight of borax, and 5 to 14 parts by weight of an organic adhesive, and a glaze consisting of a low melting point glaze, a medium melting point glaze, and a high melting point glaze. A building material molded body formed from a building material composition blended with a total amount of 5 to 30 parts by weight, and these glazes are sequentially applied from the outer layer to the inner layer: a low melting point glaze, a medium melting point glaze, a high melting point glaze, and a wall. This is a building material molded article characterized in that it is arranged in a shape (e) and layered (C).

In the above composition, various types of cement such as commercially available alumina cement and Boltland cement are used as the cement, silica sand, calcite, marble, 7. Pinch coke, tar pitch, straight-run residual oil, etc., which undergo thermal decomposition polycondensation to produce an optically anisotropic liquid crystal membrane, are used for scaly mica, and flat mica such as biotite and muscovite are used for scaly mica. Strangely, I use crystalline powders such as pentahydrate and decahydrate, organic foaming adhesives such as incyanate and urethane (self-foaming ones are better), and glazes. A glaze with a relatively high melting point, a glaze with a normal melting point, and a glaze with a low melting temperature such as a lead halide type, a thallium lead borate type, or a phosphate type are used.

In order to use the above composition as a building material, an appropriate amount of water is added and kneaded to form a product into an appropriate shape, followed by a drying process.The amount of water added depends on the form of use of the building material, for example. When used for filling, it is selected in relatively large amounts to ensure good plasticity, and when producing panel materials in factories, it is selected and adjusted to the minimum amount in order to improve density and drying properties. , usually 16 to 3 parts by weight per 100 parts by weight of the above composition.
Add 0 parts by weight.

Cement not only contributes to high strength as a binding material for product building materials, but also acts as a fireproofing material when heated by flame6.In particular, when alumina cement is used as cement, it helps to create uniform and fine foaming of the cast molded product. is promoted,
A flexible and strong product building material is obtained, and the fire resistance of the product building material is increased. Furthermore, raw coke (pitch coke) produces a carbonaceous substance with a membrane crystal structure that is fire-resistant and has high high-temperature strength in a non-oxidizing atmosphere of 250°C or higher, and penetrates into the structure of the composition, making the entire composition fire-resistant. It has a high-strength laxative effect.

Since scaly mica has low heat conductivity in the thickness direction, even if it is rapidly heated from the outside of the building material surface, the scaly mica arranged in a layer along the building material surface in the building material composition will remain intact. The heat is not transferred to the inside of the building material, and it protects the inside of the building material.

The addition of borax is important because borax forms penta- or decahydrates and contains a large amount of crystal water.
When the temperature exceeds 0°C, the combustion of the building material composition is inhibited by an endothermic reaction and released water due to the release of crystallized water, and when the temperature rises further, Kuroiso Ffl components such as alumina, silica, lime, and scaly mica are released. Reacts to form a positive composition, forming a binder or high heat barrier.

When limestone is used as an aggregate, when placed in an environment with elevated temperatures, it thermally decomposes and generates CO2w, which lowers the 02 content in the bubbles and remains in the building material composition, making it flame retardant. It contributes to improvement and also helps raw coke to become meso 7 ace.

Isocyanate-based, urethane-based, and epoxy-based adhesives are used as organic foamable adhesives, and play a role in making building material products porous and lightweight. These act as adhesion between the components of the composition, as a shape-retaining agent, and as a visualization agent for the product during the production of the building material composition and in the building material product at normal temperatures. Further, as a foaming agent, for example, a self-foaming foaming agent such as polysilosane may be used.

Specific examples of the incyanate used in the present invention include tolylene diisocyanate,
Twin cyanate compounds such as nophenyl diisocyanate, phenylene noisocyanate, nophenylmethane diisocyanate, water-added tolylene diisocyanate, water-added nophenylmethane noisocyanate, hexamethylene diisocyanate, xylylene noisocyanate, and the above-mentioned twin cyanate compounds and polyester polyols, NC○ polyols such as polyether polyols, acrylic polyols, epoxy polyols, and castor oil
It is a polyisocyanate compound having NGO groups at the terminals obtained by reacting the groups in excess of the OH groups.

Rather than using a single type of glaze, several types of glazes are used in combination, such as those with a relatively high melting point, those with a normal melting point, and those with a low melting point. . Examples of low melting point radish include P bo
B xo x system, B-0-I'h〇-T bo system, N
ao-P20s system, p2o s-p b.

It is possible to select and use materials such as those based on the Na〇-P205SIO□ system, and those having various melting points having a Soedel cone composition.

This low melting point glaze, when a building material molded product is heated due to a fire or the like, first releases its crystallized water at 100 to 200 degrees Celsius, and then exhibits a fireproof (protective) effect.
It becomes fireproof when the temperature exceeds 200°C. Note that some of the other ingredients can also act as a glaze; for example, borax is anhydrous and melts to glass at around 740°C, so it can act as a fireproofing agent at that temperature. be able to.

The Azusatsu melting point and high melting point glazes may be appropriately selected and used from well-known enamel glazes, ceramic glazes, and the like.

The use of glazes includes glaze powders of various melting points, e.g.
．． 600 and 800°C are prepared, and these are simultaneously mixed into a composition for building materials. In this case, in response to external heating, for example, when heated to about 400°C, the glaze with a melting point of 400'C melts and forms a glass film, and when heated to about 600°C, the glaze melts and forms a glass film. Melting point 600°C
The glaze forms a glass film that protects the interior from external heat.

As another example, as shown in FIG. 2 (1), the temperature from the outer layer (heating surface) to the inner layer of the product is 400'C (illustrated symbol Δ), 600'C (illustrated symbol B), and 800'C (illustrated symbol B). It is formed by aligning and layering with the one shown in symbol C). By doing this, when the temperature of the heating surface increases, each melting point axis is melted at each stage temperature to generate a molten glass film layer, thereby providing multiple layers of glass film barriers. This insulates the interior of the building material composition from high heat.

Therefore, the composition for building materials has a very strong effect of protecting the interior from external high-temperature heat (it can provide a product with excellent fire resistance and heat insulation properties).

In addition, as shown in Figure 2 (2), it is also possible to arrange and layer the building material from the surface of the product toward the center of the inner layer so that the center has a high melting point. , which is suitable for use as a partition wall.

Next, the reasons for limiting the composition ratio of the composition in the present invention will be explained.

Regarding cement and aggregate, if Cement F is outside the range of 20 to 65 parts by weight out of 100 parts by weight of both, 2
If it is less than 0 weight part, the strength of the sapwood product will be weak and it will burn easily, and if it is more than 65 parts by weight, the product will have a sufficient chordal wave, but no further increase in strength can be expected, and uniform foaming will not be possible. It becomes difficult to get caught.

If the aggregate is less than 35 parts by weight (then it becomes more flammable and
If the amount is more than 0 parts by weight, not only will foaming be insufficient, but the product strength will be insufficient.

If the raw coke is less than 4.5 parts by weight with respect to the total amount of cement and aggregate of 100 parts by weight, the meso-7 ace crystals will not be sufficiently developed and the heat resistance will deteriorate. If it exceeds 20 parts by weight, the strength of the product will decrease.

600 when the amount of scaly mica is less than 4.5 parts by weight
The heat resistance from °C deteriorates, and if it exceeds 9 parts by weight, the product strength decreases.

If the amount of borax is less than 51 parts by weight, the initial heat resistance will decrease and it will become more flammable. If it exceeds 18 parts by weight, the product strength at high temperatures will decrease and the fire resistance will deteriorate.

In a composition in which the organic foamable adhesive does not contain a glaze, 2
If it is outside the range of 0 to 45 parts by weight, if it is less than 20 parts by weight (liL parts), foaming will be insufficient or will not occur, and if it is more than 45 parts by weight, the molded product will be easily flammable and its strength will be low. If included, at least less than 20 parts by weight, 5 to 5 parts by weight
Satisfactory foaming occurs at 30 parts by weight.

If the glaze is outside the range of 5 to 39 parts by weight, or if it is less than 5 parts by weight, when the product building material is heated by flame etc., the glaze will heat and melt and form a glass fall inside the building material, preventing the outside world from entering. It is impossible to achieve the purpose of the second invention, which is to shut down the heating of the C.
Due to insufficient O2 generation, a uniform foam cannot be obtained.
If the amount exceeds 30 parts by weight, there is a risk that when the product building material is exposed to flame heating from the outside world, a large amount of glaze will melt and the entire product will become soft and deformed, and the product foam will not develop its strength after hardening. It will be enough.

Based on the above, the present invention specifies the composition ratio within the above range.

(Example 1) Alumina cement 200Kg, crushed limestone 400Kg
.

Raw coke (softening point approx. 430°C1 fixed carbon 88.8%)
, volatile content 10.7%, ash content 0.5%) 25 kg, scaly mica 25 kg, borax (decahydrate) 90 kg, incyanate foam adhesive (water-soluble urethane prepolymer) 250 kg, and A rice cake-like product obtained by adding and mixing 250 kg of water to a powder mixture of , Sa40Io+
No. 6 building material composition panels were manufactured. The physical properties of this panel are as follows.

Transverse bending strength: 2Z, 5Kg/Cm', compressive strength: 28.4
Kg/cm2, bulk specific gravity: 1.09, sound insulation: 1a passed ("Architectural Institute of Japan", sound insulation performance standards for buildings, class 1 D5)
0) Next, a panel with a thickness of 100+ntn was manufactured as described above, and within it, as shown in FIG.
1st point), a position at a depth of 32.5m+n (2nd point),
Depth 50.0+ua position (1'S3 point), depth 67
．． 5IaI11 position (fourth point) and depth 85. Om
A temperature sensor was buried at the position m (fifth point), and the fire resistance and heat insulation properties were measured by exposing the surface of each sample to a flame.

The results are shown in Figure 1, where line 1 is the first point and line 2
is the time-temperature curve at the f:1IJ2 point, line 3 at the third point, line 4 at the fourth point, line 5 at the fifth point, and line P
is the panel surface temperature curve, line J is the Japanese Industrial Standard (JIS)
This is the heating temperature curve for the panel fire resistance test specified in .

From this graph, even if the heating surface reaches about 1000℃,
The temperature of the building material product of the present invention at the fifth point near the opposite side hardly rises, indicating that the product has excellent fire resistance and heat insulation properties.

(Example 2) Portland cement 240KFi, limestone powder 90K
g, raw coke (softening point 430' C1 fixed carbon 88
．． 8%, volatile content 10.7%, ash content 0.5%) 35Kg,
29 kg of scaly mica, 40 kg of borax (decahydrate),
Incyanate foam adhesive (water-soluble urethane prepolymer) 90Kg, melting point 300°Cf) B 202
P b OT l z O-based glaze 45Kg, melting point 480°C (7) P bo -B 20 v-8io
Add 250K of water to a powder mixture consisting of 40Kg of 2-type glaze.
The mochi-shaped radish obtained by adding and mixing g was dried at room temperature for 24 hours, and the length was 1.8 +++, the width was 0.9 mm, and the thickness was 40 mm.
91 1113 building material composition panels were constructed. The physical properties of this panel are as follows.

Transverse bending strength: 21. OKE/ClO2, compressive strength: 27.
OKH/c+o2, bulk specific gravity: 1.10, sound insulation = 1
(Architecture Institute of Japan), Sound insulation performance standards for buildings, 1
As described above, the products obtained from the composition for building materials of the present invention have excellent fire resistance and heat insulation properties, and meet the JIS standard product (Japanese Industrial Standard A1304, (2-hour fire resistance)). It far exceeds that, has sufficient bending strength, and has sound insulation properties of frequencies 12511z to 4K I.
The average sound transmission loss in the Iz region is about 57.4d13 (grade 1 pass), which is good, and the specific gravity is low.

In terms of earthquake resistance, it can withstand deformation of 1/125.

Furthermore, the composition product for building materials of the present invention has a heavy and beautiful appearance and is suitable for use as an exterior wall member, etc.

It also has extremely high chemical resistance, so it can be injected with chemicals for controlling cockroaches, rats, etc., and it can also be left with a mold-inhibiting agent attached to it.

(Effects of the Invention) As detailed above, the composition for building materials and the molded article for building materials of the present invention exhibit many excellent physical and chemical properties necessary for building materials, and are suitable for application as building materials. The scope is wide.

That is, it is suitable for use as building materials, injection materials, door boundary walls, balconies, handrails, fillers, partition materials, flooring materials, exterior walls, fire doors, and composite panel materials.

Characteristics include fire resistance (JIS 2 hour fire resistance) and heat insulation (
(3,0K cal/ +o2・b・'C), thermal conductivity 0.03-0.035ha, rock wool 0.027
, 0.021 of Turethane foam and 0.09 of ALC) is particularly advantageous for fire doors and partition walls, and has good impact resistance (flexibility). (3Kg-
It is advantageous as a wall material for skyscrapers, as it does not cause dents or cracks, and is especially advantageous as a wall material for skyscrapers.In terms of sound insulation, it is especially advantageous as a partition material.
The light weight (specific gravity of 0.3 to 1.6) is especially advantageous for exterior wall and construction work.

Furthermore, it has good adhesive properties, making it advantageous for joining and assembling building materials together and for laying decorative bricks. ! It has many advantages and uses, such as easy field installation and removal due to its small size, and no condensation build-up.

Furthermore, the building material composition product of the present invention has properties close to that of artificial wood, and can be planed, sawed, tacked, nailed, etc., and can also be anchored, which is impossible with ALC.

Cuttings and cutting waste can also be used as a filler for adhesives or as filler for fire doors, etc.
! + Can be reused and does not generate so-called industrial waste.

[Brief explanation of drawings]

Fig. 1 is a graph of the fire resistance and heat insulation test of the building material panel according to the example of the present invention, Fig. 2 (1) and (2) represent the presence of glazes with various melting points in the building material panel, and Fig. 3 is the same. This shows the embedded state of temperature sensors during panel fire resistance and insulation tests. Δ, B, C: Various melting point glazes

Claims (5)

[Claims] (1) For a total of 100 parts by weight of a mixture consisting of 20 to 65 parts by weight of cement and 80 to 35 parts by weight of aggregate, 4.5 to 14 parts by weight of raw coke, 4.5 to 9 parts by weight of scaly mica, 5-15 parts by weight of sand and 20-20 parts by weight of organic foam adhesive
45 parts by weight of a composition for building materials. (2) For a total of 100 parts by weight of a mixture consisting of 20-65 parts by weight of cement and 80-35 parts by weight of aggregate, 4.5-14 parts by weight of raw coke, 4.5-9 parts by weight of scaly mica, 5-15 parts by weight of sand and 5-3 parts by weight of organic foam adhesive
A composition for building materials, characterized in that it contains 0 parts by weight of a glaze, and a total of 5 to 30 parts by weight of a glaze consisting of a low melting point glaze, a medium melting point glaze, and a high melting point glaze. (3) For a total of 100 parts by weight of a mixture consisting of 20-65 parts by weight of cement and 80-35 parts by weight of aggregate, 4.5-14 parts by weight of raw coke, 4.5-9 parts by weight of scaly mica, 5-15 parts by weight of sand and 5-3 parts by weight of organic foam adhesive
A building material molded article formed from a building material composition blended with 5 to 30 parts by weight of a glaze consisting of a low melting point glaze, a medium melting point glaze, and a high melting point glaze. A building material molded article characterized in that a low melting point glaze, a medium melting point glaze, and a high melting point glaze are arranged and layered in a wall shape in order from the outer layer to the inner layer. (4) The building material molded article according to claim 2 or 3, wherein the cement is alumina cement. (5) The building material molded article according to claim 2 or 3, wherein the cement is Boltland cement.