KR101177085B1 - incombustible architecture panel using straw and method of manufacturing the same - Google Patents

Abstract

The present invention relates to a method for manufacturing a non-combustible building panel made of straw as a main raw material.
The present invention further relates to a building panel manufactured by the above method.
Rice straw, which is usually harvested and destroyed, is a pollution-free natural resource, but is only used for mushroom cultivation, partial feed, or compost.
The present invention was cut and washed with rice straw and then coated with a pollution-free adhesive to which the inorganic flame retardant of the present inventors were applied to form a predetermined shape to prepare a building panel. The panel manufactured in this way can be used as an excellent material for indoor and outdoor decoration due to the pollution-free, porous, moisture controllability, sound absorption according to the characteristics of the rice straw itself.
In addition, the indoor and outdoor decorative materials using the conventional straw straw has a bad property by treating the flame retardant harmful to the human body, while the flame retardant of the present invention used a natural inorganic mineral, in particular, the inorganic material itself is not ignited at all, even if a fire occurs is stable However, it can be used as a building panel that is harmless to human body.

Description

Inconbustible architecture panel using straw and method of manufacturing the same}

The present invention relates to a method for manufacturing a non-combustible building panel made of straw as a main raw material.

The present invention further relates to a building panel manufactured by the above method.

Various boards using organic or inorganic materials are used mainly for gypsum boards used as interior and exterior materials for building, in particular, interior materials. Boards using these artificial materials are harmful to health and cause pollution by radioactive emission, fine dust fat release, and VOD component release by adhesives due to the characteristics of raw materials themselves.

In order to be used as sound insulation or nonflammable or flame retardant for building interior materials, additional flame retardant components are added, and various organic adhesive components and additives are used to enhance the mixing of these components with organic inorganic materials and to enhance strength. Inevitably has a number of adverse effects.

In recent years, as a material to replace such interior materials, new materials using eco-friendly ingredients such as ocher, rice husk, rice straw, and the like are emerging. For example, Patent No. 186715 (registered Dec. 29, 1998) discloses a composition for preparing a heat insulating material containing chaff or rice straw, comprising 35 to 80% by weight of chaff, rice straw or a mixture thereof, polyvinyl chloride, polyvinylacetate, A composition consisting of 20 to 60% by weight of a binder selected from polyacrylamide and the like has been disclosed, which shows superior bending strength and compressive strength than conventional expanded polystyrene. In addition, Korean Patent Publication No. 2000-44964 (published on July 15, 2000) discloses rice hulls which are crushed to a certain size, mixed with an adhesive, stirred, filled with a mold, and heated and compression-molded at a constant pressure. The manufacturing method is disclosed, and Utility Model Registration No. 325933 (registered on August 28, 2003) discloses a heat insulating material composed of chaff, mother-of-pearl, loess or kaolin, and a water-soluble binder. To get the effect of health.

The above-mentioned boards are basically flame retardant materials which are widely used in order to give the characteristics of flame retardant, mainly halogen-based organic flame retardants, mainly bromine or chlorine, and these may be said to be effective in terms of the generation of harmful gases such as dioxins. As a result of serious environmental and human safety problems, improvement of conventional flame retardant materials as well as the development of alternative materials are required.

Therefore, the present invention was made in view of the above-described conventional problems, by adding a mixture of straw, methyl cellulose and ocher or ceramic powder, mixed, and then injected into a mold under high pressure, aged in a drying furnace, and then demolded to complete the conventional gypsum. While boards and other mineral boards are harmful to health and cause pollution, the aim is to provide soundproof and non-combustible built-in boards with chaff and straw in a new shape that can lead to an environment-friendly, healthier and safer life.

The present invention is to provide a non-combustible built-in board using a straw remaining after the harvest of rice widely cultivated in Asia, including Korea.

The present invention also provides a flame retardant board harmless to the human body by using natural inorganic minerals and inorganic chemicals as a flame retardant of the board manufactured using straw.

While the product of the present invention is conventional gypsum board or other inorganic boards are harmful to health and cause pollution, the present invention is easy to decompose in water when discarded after use, and does not form sediment and is fermented like compost and is harmful to soil. It is expected to be used and applied in related fields because it can lead to eco-friendly, healthier and safer life.

In particular, the product of the present invention is a mineral flame retardant of the mineral system, even if a fire occurs, even if a fire is harmless to the human body has greatly improved the stability.

The present invention is to provide a natural flame retardant building board harmless to the human body by using the straw remaining after the rice farming as a main raw material, using an inorganic flame retardant and a natural organic adhesive.

Specific embodiments of the present invention will be described.

1.Preparation step of raw straw

After the rice is grown, the remaining straw is cut to a size of 0.1 to 10 mm, washed with water, and dried to less than 10% moisture content.

2.Preparation step of adhesive

As the adhesive used in the present invention, a non-polluting organic adhesive having almost no discharge of VOD among the adhesives of the synthetic resin system widely used is basically used. In addition, inorganic adhesives such as water glass may also be used.

The flame retardant prepared by the following method is added to the adhesive thus prepared.

Inorganic flame retardant materials include inorganic nano materials, germanium, ocher, natural polymer compounds, ceramics, plants, silica, etc. 60 to 70% by weight of the mineral component, 10-30% by weight of dolomite and 10 to 30% by weight of natural silicate, the high-temperature heat treatment and then powder-treated primary mineral component,

Sodium nitrate 5-15 wt%, silica 10-30 wt%, alumina 10-20 wt%, silicon dioxide 10-20 wt%, borax 20-40 wt%, silicate 5-10 wt% and the rest filled with distilled water Inorganic chemicals solubilized by high temperature heat treatment,

It consists of a process of mixing the primary mineral component and the inorganic drug in a ratio of 1: 1 to 1: 5 based on the weight.

The primary mineral component is metamorphic rock or cyanite (AL2-, whose physical properties change depending on the inorganic nanomaterials, germanium, ocher, natural polymer compounds, ceramics, plants, silica, and soil sulfate (AL2 (so4) 3) Sio6) consists of alumina (AL2SiO5), fluorite tourmaline, pneumatolytic minerals and extracts of minerals stable at high temperatures, etc. These minerals are polymerized and subjected to high temperature heat treatment, extraction from synthesis and aging. It is transformed into flame retardant material based on compound and some plants It is a raw material obtained by chemical change through the aging process of materials extracted by melting process at high temperature and high pressure state, and it is a new material developed with strong non-flammability and eco-friendly.

In the above process, the dolomite is heated and melted at 2,500-2,800 ° C. for 3 hours and then polymerized into powder material. When dolomite is heat-treated at the high temperature, the majority of the mineral components are melted at high temperature, and polymerization or unusual chemical modification occurs with other mineral components in the vicinity.

In the above process, natural silica is heat treated at 1,700 ° C. and then powder processed. Natural quartzite also has a new mineral structure due to the high temperature heat treatment and melting of the mineral constituents due to chemical bonding or denaturation with the surrounding components.

In the above process, natural silica is also prepared by heating at 1,500 ° C. for 2 hours and at least 24 hours.

In the above process, inorganic nitrates such as sodium nitrate, silica, alumina, silicon dioxide, and borax are aged by stirring in 50% of distilled water at 80 ° C.

The silicate is separately heated and stirred at 900 ° C. and mixed with the above-mentioned first-treated chemicals. This mixture is cooled to 80 ℃ within 1 hour and then prepared by adjusting 23% by weight of distilled water to 40 ℃ or less.

The addition amount of the inorganic flame retardant to the adhesive is suitably 1 to 10% by weight. If it is less than 1%, the flame retardant property is difficult to be exhibited. If it is more than 10%, the flame retardant property is improved, but there is no economic feasibility.

3. forming step

The straw prepared in step 1 and the flame retardant adhesive prepared above are uniformly mixed. 1 to 10% of the flame retardant adhesive is uniformly mixed based on the total volume of the raw straw so as to be applied to the surface of the straw. When the coating is completed, the mold is filled into a mold to be molded and then pressurized with a high pressure press to produce a panel having a desired thickness. Once molded, the thermosetting adhesive was cured at room temperature for 24 hours at room temperature in a heating furnace to obtain a desired panel.

4. surface treatment step,

The product obtained by the molding process is required for a variety of uses, such as indoor decoration or outdoor decoration, so that a separate sheet of paper or a color coated on the surface to produce a product of the desired form.

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Claims (4)

After preparing rice, the remaining straw is cut to a size of 0.1 to 10 mm, and then washed with water, and preparing a raw straw which is dried to less than 10% moisture content,
Adhesive preparation step of adding 1 to 10% by weight of inorganic flame retardant to the adhesive,
1 to 10% by volume of the flame retardant adhesive uniformly mixed with the raw material straw, and filled in a mold and then pressurized with a high-pressure press to produce a panel of the desired thickness and then consists of a molding step of curing.
The inorganic flame retardant material is 60 to 70% by weight of mineral components selected from inorganic nanomaterials, germanium, ocher, natural polymer compounds, ceramics, plants and silica, 10 to 30% by weight dolomite and 10 to 30% by weight natural silica Primary mineral component which is heat-treated and then powder-treated; And
Sodium nitrate 5-15 wt%, silica 10-30 wt%, alumina 10-20 wt%, silicon dioxide 10-20 wt%, borax 20-40 wt%, silicate 5-10 wt% and the rest filled with distilled water A method of manufacturing a non-combustible building panel using a straw, characterized in that the mixture is prepared by the high-temperature heat-treated inorganic chemicals;
delete The method of claim 1,
The method of manufacturing a non-combustible building panel using a straw, characterized in that further comprising the step of coloring the surface of the panel is completed in the molding step.
Non-combustible building panel using a straw, characterized in that the manufacturing method of claim 1 or 3.