KR20100107632A - Manufacturing method of interior board - Google Patents

Abstract

PURPOSE: A method for manufacturing an incombustible interior panel using sawdust and wooden chips is provided to prevent poisonous gas when a fire and to improve thermal resistance. CONSTITUTION: A method for manufacturing an incombustible interior panel using sawdust and wooden chips is as follows. An additive is formed by diluting an aluminum sulfate solution with water(S1). A wooden member is formed by mixing sawdust and wooden chips(S2). The wooden member is put into the additive and is deposited for ten minutes(S3). The wooden member with 75~80% moisture content is mixed with cement using a stirrer(S4).

Description

Manufacturing method of non-combustible interior panel using sawdust and wood chips {Manufacturing Method of Interior Board}

The present invention relates to a method for manufacturing a non-flammable interior panel using sawdust and wood chips having high strength, excellent thermal insulation, heat insulation and noise absorption, and excellent flame retardancy and heat resistance.

In general, the manufacturing method of the interior panel, for example, to manufacture a fire-resistant structure in which the 15T fireproof gypsum board and the 9T fiber-reinforced cement board (Vista Board) on both sides of the C-STUD by pressing molding method, The finely ground silica (Sio2) as a raw material and the method of forming integrally with lightweight foam concrete, etc., but the panel manufactured by such a method has good physical properties such as strength and fire resistance, but is weak against moisture, In order to maintain noise absorption, there is a disadvantage in that the thickness of the product is relatively thick, and is mainly used as a partition or interior panel of a building.

Moreover, in the case of the interior panel for interior materials manufactured by the above-described method, the material is limited and thus the aesthetics are deteriorated, and in particular, it is not sufficient to solve the noise pollution and fire in the underground multi-use office or the complex housing type. It can only be used in a limited way, especially in the event of a fire, which has led to the loss of valuable lives.

The present invention is to solve the problems of the above-described interior panel for interior materials, the purpose of which is the strength of the wood material as a main raw material, high strength, excellent insulation, heat insulation, noise absorption, wood materials, cement and additives are chemical After reacting to induce mineralization and flame resistance of wood components to have a function as a flame retardant building material, a coating material that has been developed, for example, Japanese Patent No. 1991554 (Invention: Modifier of Porous Material, Modification Method) And a coating material such as CRYSTAL SEALER (manufacturer: Nikko Co., Ltd.) of the modified material on the surface of the material, so that the surface is formed like Lithia (lithium aluminum mineral) glass at a maximum of 1,300 ℃. By forming a film that does not cause decomposition or dissolution, it is possible to change the properties of a flame retardant material combined with wood and cement into a nonflammable material. The present invention provides a method for manufacturing a non-combustible interior panel using sawdust and wood chips that do not emit toxic gases in case of fire and have excellent heat resistance.

In order to achieve the above object, the present invention comprises the steps of preparing an additive in which the aluminum sulfate aqueous solution diluted in water; Preparing a wood material composed of sawdust and wood chips; Immersing the wood material in an additive for 10 minutes at a temperature of 65 ° C. to 80 ° C .; And a method of manufacturing a non-flammable interior panel using sawdust and wood chips, comprising mixing cement with an agitator in a state where the water content of the wood material is 75 to 80% to form a panel by a vibration and compression method. have.

The present invention is also characterized by a method for producing a non-combustible interior panel using sawdust and wood chips, wherein the additive is obtained by diluting 8% by weight of an aqueous aluminum sulfate solution to 98% by weight of water.

In addition, the present invention is characterized by a method for producing a non-combustible interior panel using sawdust and wood chips in which the mixing ratio of the wood material and cement is 72 to 78% by weight of wood material and 22 to 28% by weight of cement.

In another aspect, the present invention is characterized in the method for producing a non-combustible interior panel using sawdust and wood chips further comprising the step of applying a non-flammable coating material to the surface of the panel formed in the step of forming the panel.

In addition, the present invention is characterized in the method for producing a non-combustible interior panel using sawdust and wood chips the non-flammable coating material is a crystal sealer.

The non-combustible interior panel manufactured by the method of the present invention is a material in which sawdust, wood chips and cement are combined, and is excellent in heat insulation and sound absorption peculiar to wood components, and is easily cut or surface treated as a wood processing tool such as saws and planes. . In addition, it is easy to glue only the mortar coating on the inner wall adhesive surface when adhering the non-combustible interior panel of the present invention to the inner wall formed by the existing bricks, blocks, etc. There is an effect that can produce an indoor atmosphere.

In addition, the present invention is to produce a panel having flame resistance and flame retardancy by depositing wood material in an aqueous solution of aluminum sulfate, after the non-flammable coating material, such as crystal sealer on the surface of the panel including a non-flammable material from the flame retardant material as the material properties are induced By combining the original porous wood material with cement, it forms a film on the surface and maintains the appearance with self-hardening property that is cured with drying.It is a non-flammable material that does not emit toxic gas in the event of fire and decomposes up to 1,300 ℃. It is possible to manufacture with non-combustible building interior and exterior materials and partitions because it does not cause melting, and has an effect of improving product value according to the surface treatment technique.

In addition, the crystal sealer applied as a coating material in the present invention is a liquefied by applying a suitable temperature and pressure after crushing the quartz of natural stone into particles of 5 ~ 7㎛ using nano and bio technology, the glass component containing SiO ₂ as a main component It is an inorganic material that forms a glass film at room temperature, and uses the property of glass as a coating material. Therefore, the main raw material is quartz, an inorganic eco-friendly paint containing alcohol and 30 kinds of enzymes. It is recognized as a photocatalytic effect by the sun and has a stain-resistant function. Therefore, when applied to a panel with wood and cement, it has an aesthetic effect. It is excellent, and it is characterized by its excellent fire retardant effect by blocking the initial explosion phenomenon in case of fire just by applying the surface.

Wood materials, in particular, have a high specific heat, small thermal conductivity, and no clear melting point. On the other hand, wood fires form a carbonized layer, which slows flame-burning and suppresses heat transfer into the material. Material. Therefore, it uses the properties such as blocking the supply of heat and oxygen by compounding or coating with various materials that do not burn well such as cement and crystal sealer and causing chemical reaction with drugs such as phosphorus, fluorine, boron, and alkali metals. The fire protection performance is further improved.

The non-combustible interior panel pursued by the present invention has a low heat transfer rate and a large volume specific heat ratio than any building material including concrete, so that it has excellent thermal insulation and thermal insulation, and moisture control function that other materials do not have is human. It is the best building material for. It is composed of cellulose and hemicellulose, which occupy more than 70% of the wood cell wall, at which water molecules can come and go at any time. When the surrounding air dries, the water molecules come off to increase relative humidity. This is because when it gets wet, it absorbs water molecules up to 30% of the weight of the wood to lower the relative humidity.

BEST MODE Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram showing a method for manufacturing a non-flammable interior panel using sawdust and wood chips according to the present invention, the step (S1) of preparing an additive diluted in aluminum sulfate aqueous solution, and made of sawdust and wood chips Preparing a wood material (S2), the step of depositing the wood material in the additive (S3), and the wood material deposited in the additive is mixed with cement to form a panel (S4).

First, the step of preparing an additive (S1) is made by mixing and diluting 8% by weight of an aqueous aluminum sulfate solution and 98% by weight of water, and the aluminum sulfate is a material that is also used as a foam fire extinguisher, It is used to induce flame resistance in manufacturing.

Subsequently, the step of preparing the wood material (S2), the sawdust and wood chips are crushed to a size of 5 ~ 25mm is made by mixing the sawdust and wood chips 2: 2.

Subsequently, the step (S3) of immersing the wood material in the additive is achieved by immersing the wood material in the additive and depositing it for 10 minutes at 65 to 80 ° C. with a relatively high penetration of the additive.

Subsequently, the step of forming the panel by mixing the wood material with cement (S4), after mixing the cement and the stirrer in the state that the water content of the wood material deposited in the additive is 75 ~ 80%, and molding by vibration and compression method In this case, it is preferable to mix at a ratio of 72 to 78% by weight of wood material, 22 to 28% by weight of cement, and if more wood material is mixed than the mixing ratio, the sound absorbing properties of the panel are improved, but the strength is lowered. On the contrary, when a large amount of cement is mixed, the strength is improved, but the sound absorption becomes low.

In addition, the present invention further comprises the step of applying a non-flammable coating material to the surface of the panel prepared as described above.

It is preferable that a coating material is inorganic crystal sealer (CRYSTAL SEALER) (manufacturer: Nikko Japan Patent No. 1991554). By impregnating the surface with a non-flammable coating material, it is possible to form a film that does not cause decomposition or dissolution even at up to 1,300 ℃, thereby causing a change in the properties of the flame-retardant material combined with a wood material and cement into a non-combustible material, In case of fire, it does not emit toxic gas and can produce non-combustible interior panel with excellent heat resistance.

≪ Example 1 >

8 wt% of aluminum sulfate solution was diluted with 98 wt% of water to prepare an additive. The sawdust and wood chips were shredded into a size of 15 mm, and the wood material mixed at a ratio of 2: 8 was added to the additive. After immersion for 10 minutes at 75% by weight of 75% cement and 25% cement was mixed in the water content of the wood material 77.5% panel was formed by the vibration and compression method 3.5cm thick, the surface of the panel A panel was prepared by applying a crystal sealer which is a non-flammable coating material.

<Example 2>

In Example 1, only the mixing ratio of wood material and cement was changed to 72% by weight of wood material and 28% by weight of cement, and the remainder was the same to prepare a panel having a thickness of 3.5 cm.

<Example 3>

In Example 1, only the mixing ratio of wood material and cement was changed to 78% by weight of wood material and 22% by weight of cement, and the remainder was the same to prepare a panel having a thickness of 3.5 cm.

Comparative Example 1

In Example 1, only the mixing ratio of wood material and cement was changed to 70% by weight of wood material and 30% by weight of cement, and the remainder was the same to prepare a panel having a thickness of 3.5 cm.

Comparative Example 2

In Example 1, only the mixing ratio of wood material and cement was changed to 80% by weight of wood material and 20% by weight of cement, and a panel having a thickness of 3.5 cm was prepared in the same manner.

<Table> (Panel thickness 3.5cm)

Item Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Conventional Example 1 Conventional Example 2 importance
kg / ㎥ 522 548 483 561 470 610 500 Thermal conductivity
㎡ K / W 2.14 2.08 2.20 1.87 2.46 0.069 0.33 Thermal conductivity
W / (㎡ / K) 0.467 0.486 0.449 0.492 0.426 - - Thermal conductivity
W / (MK) 0.144 0.148 0.138 0.152 0.121 0.25 0.15 Compressive strength
KN / ㎡ 90 92 82 62 93 59 91 The tensile strength
KN / ㎡ 90 93 85 63 95 61 92 Breaking strength
KN / M 700 720 560 750 500 650 600 Sound absorption
(Center frequency
1000 Hz) 55 dB
(Nighttime
40 dB) 60 dB
(Nighttime
45 dB) 53 dB
(Nighttime
42 dB) 63 dB
(Nighttime
47 dB) 48 dB
(Nighttime
35 dB) 58 dB
(Nighttime
43 dB) 65 dB
(Nighttime
56 dB)

The above table shows the characteristics of the panels prepared according to Examples 1, 2, 3 and Comparative Examples 1 and 2 of the present invention, and the panels prepared according to Conventional Examples 1 and 2, respectively. (C-STUD) is a panel manufactured by pressing-molding a fire resistant structure in which 15T fireproof gypsum board and 9T fiber-reinforced cement board (Vista Board) are installed on both sides of the (C-STUD), and the conventional example 2 is finely ground silica (Sio2) As a raw material, it is a panel manufactured by integrally molding with lightweight foam concrete.

As shown in the table, wood material was deposited on an additive diluted by 8% by weight of an aqueous aluminum sulfate solution to 98% by weight of water, and 72-78% by weight of wood material having a water content of 77.5% and 22-28% by weight of cement were mixed. Examples 1 to 3 of the present invention, the compressive strength, tensile strength and fracture strength is superior to the conventional example 1 and appeared to be comparable to the conventional example 2, sound absorption is shown to be superior to the conventional example 2 and comparable to the conventional example 1 In general, both strength and sound absorption were found to have good characteristics, and in Examples 1 to 3, the characteristics of Example 1 set to 75% by weight of wood and 25% by weight of cement were found to be the best overall.

On the other hand, the panel manufactured by the manufacturing method of Comparative Example 1, which is set to 70% by weight of wood material and 30% by weight of cement, has good strength but lower sound absorption as the amount of cement is increased as compared with Examples 1 to 3. In the case of Comparative Example 2, which is set to 80% by weight of wood material and 20% by weight of cement, the sound absorption is good but the strength is weak as the mixing amount of the wood material is increased from Examples 1 to 3.

In addition, the panel manufactured in the manufacturing method of Examples 1 to 3 of the present invention is a crystal sealer, which is a non-flammable coating material, is applied to the surface, and an additive containing an aqueous solution of aluminum sulfate is added when the wood material and cement are blended. By applying a crystal sealer on the surface of the panel to which the flame resistance is added by inducing flame resistance, the interior panel of building wood cement can be used as a noncombustible material by converting the flame retardant material into a nonflammable material.

Item Crystal sealer Hypercoat Exterior transparent Transparent gloss Mohs Hardness 5.2 - flash point No combustibility Inflammables Poison castle None, no skin disorders - Immersion Figures 0.93 x 10-9 cm / sec 4.96 x 10-9 cm / sec Heat-resistant temperature 1000 ~ 1300 ℃ 300 ~ 700 ℃ At the time of application
Material preheat not needed 40 ~ 60 ℃ Hardening Room temperature natural hardening Heat curing
(150 ℃ -30min, 250 ℃ -15min)

In other words, in the comparison of the crystal sealer and the hypercoat, which is a heat-resistant ceramic nano-coating material, as shown in the above characteristic comparison table, the crystal sealer is more than twice as high in the heat resistance temperature, so that the flame resistance is added in case of fire. Crystal sealer does not require material preheating during application and it is natural curing at room temperature, whereas hypercoat requires material preheating at 40-60 ℃ when applied and heats 150 ℃ -30 minutes and 250 ℃ -15 minutes after application. Since the hardening process requires a lot of construction costs, there is a disadvantage that the economy is poor.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the present invention and not to be construed as limiting the scope of the present invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1 is a block diagram showing a manufacturing process of a non-combustible interior panel using sawdust and wood chips according to the present invention.

Claims (5)

Preparing an additive obtained by diluting an aqueous aluminum sulfate solution with water; Preparing a wood material composed of sawdust and wood chips; Immersing the wood material in an additive for 10 minutes at a temperature of 65 ° C. to 80 ° C .; And The method of manufacturing a non-combustible interior panel using sawdust and wood chips, characterized in that the step of forming a panel by a vibration and compression method by mixing cement with a stirrer in the state that the water content of the wood material is 75 ~ 80%. . The method of claim 1, wherein the additive A method for producing a non-combustible interior panel using sawdust and wood chips, characterized by diluting 8% by weight of an aqueous aluminum sulfate solution to 98% by weight of water. The method for manufacturing a non-combustible interior panel using sawdust and wood chips according to claim 2, wherein the mixing ratio of the wood material and the cement is 72 to 78% by weight of the wood material and 22 to 28% by weight of the cement. The non-combustible interior using sawdust and wood chips according to any one of claims 1 to 3, further comprising applying a non-flammable coating material to the surface of the panel formed in the step of forming the panel. Method of manufacturing panel. The method of manufacturing a non-combustible interior panel using sawdust and wood chips according to claim 4, wherein the non-flammable coating material is a crystal sealer.

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