KR102614267B1 - Manufacturing method of nonflammable yellow board - Google Patents

Abstract

The present invention relates to a method of manufacturing a non-flammable yellow board, and specifically, a stirring and reaction step of reacting the raw materials by adding raw materials prepared by measuring them in a preset amount into a stirrer and mixing them with stirring; A forming step of adding a foaming agent to the mixture obtained in the stirring and reaction step to foam it, and then extruding it into a board shape in an extrusion mold of an extruder; A first curing treatment step of curing the molded product in the extrusion mold by heating it with steam; And, a second curing treatment step of demolding the molded product for which the first curing treatment has been completed from the extrusion mold, cleaning the surface, and curing the cleaned molded product by heating it with steam.

Description

{MANUFACTURING METHOD OF NONFLAMMABLE YELLOW BOARD}

The present invention relates to a method of manufacturing a non-combustible yellow board, and specifically includes magnesium sulfate and magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, resin rock and flame retardant as main ingredients, It is related to the manufacturing technology of yellow board with increased incombustibility.

Looking at recent large-scale accidents caused by fires, it is reported that more damage occurs from suffocation due to toxic gases generated by combustion than from direct damage from fire.

This is because the interior and exterior materials of buildings, flooring materials, and exterior materials such as furniture and electronic products are made of non-combustible materials. Exterior materials made of these materials not only burn easily in the event of a fire, but also emit toxic gases, etc. in the process. There is a problem in that it generates a large amount of harmful substances, causing great damage to humans, property, and the environment.

In addition, most of the interior and exterior materials discharged in large quantities during the demolition of buildings cannot be recycled and do not decompose quickly when landfilled, causing environmental pollution.

Accordingly, in an effort to solve the above problem, Korean Registered Utility Model No. 20-0439244 is formed into a flat square box shape by two flat plates facing each other and a wall built between the flat plates, and rice husk is filled inside, while the flat plates and They also proposed a technology for rice husk board, whose technical feature is that the wall is a pressed board made of rice husk.

However, this prior art simply forms a rice husk board by filling the space formed by two flat plates and a wall formed by mixing rice husk and adhesive and forming a rice husk board, so it is not durable, and by using only rice husk, it is non-flammable. There was an unavoidable problem of functional deterioration.

Accordingly, the present invention is to provide a manufacturing technology for a yellow board with increased incombustibility using magnesium sulfate and magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, pine resin, and flame retardant as main ingredients. It has a purpose.

According to an embodiment of the present invention for achieving the above-described object, a method of manufacturing a non-flammable yellow board includes a stirring and reaction step of reacting the raw materials by adding raw materials prepared by measuring them in a preset amount to a stirrer and mixing them with stirring; A forming step of adding a foaming agent to the mixture obtained in the stirring and reaction step to foam it, and then extruding it into a board shape in an extrusion mold of an extruder; A first curing treatment step of curing the molded product in the extrusion mold by heating it with steam; And, a second curing treatment step of demolding the molded product for which the first curing treatment has been completed from the extrusion mold, cleaning the surface, and curing the cleaned molded product by heating it with steam.

In the stirring and reaction step, magnesium sulfate and magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, pine resin, and flame retardant are prepared as the raw materials, and a solidification enhancer is used as an auxiliary component. It is advisable to prepare.

In the stirring and reaction step, based on 100% by weight of the total raw materials, 30.0 to 40.0% by weight of the magnesium sulfate and magnesium oxide, 8.5 to 12.0% by weight of the quartz sand, 12.8 to 18.0% by weight of the vegetable material, and 11.0% by weight of the first recycled material. to 15.6% by weight, 6.8 to 9.6% by weight of the second recycled material, 6.0 to 8.4% by weight of the wood pulp, 3.4 to 4.8% by weight of the pine resin, 4.3 to 6.0% by weight of the flame retardant, and 1.7 to 2.3% by weight of the solidification enhancer. It is preferable to include it as a raw material.

When performing the molding step, the foaming agent is added and mixed in a ratio of 0.9 to 1.2% by weight based on the weight of the mixture obtained in the stirring and reaction step, so that the mixture has a porous structure and has a non-flammable effect. It is preferable to perform extrusion molding.

In the first curing treatment step, the molded product is cured by exposing it to steam rising at 10 to 15 degrees Celsius per unit time, and the maximum rising temperature of the steam is in the temperature range of 70 to 90 degrees Celsius, and the second curing process In the treatment step, the molding is cured by exposing it to steam rising at 10 to 15 degrees Celsius per unit time, and isothermal is preferably maintained at 70 to 90 degrees Celsius, which is the highest temperature range of steam, for 3 to 5 hours. .

In the second curing treatment step, the flame retardant in the molding is changed to a solid state by curing the molding by exposing the molding to steam of 70 to 90 degrees Celsius, which is the highest temperature range, for 3 to 5 hours. It is preferable to have a non-flammable effect. do.

After performing the second curing treatment step, a surface treatment step of polishing the surface of the molded product using a sanding machine; And, it is preferable that a dust removal step of removing dust generated while polishing the molded product using compressed air and a dust collector can be further performed.

According to an embodiment of the present invention, the production of a yellow board with increased incombustibility comprising magnesium sulfate, magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, pine resin, and flame retardant as main ingredients. It has the effect of providing a method.

In addition, according to one embodiment of the present invention, the manufacturing cost is reduced by recycling raw materials such as rice husk, vegetable powder, wood powder, waste fiber and waste paper, which are excellent in flame retardancy and sound absorption but are discarded materials, making it possible to manufacture at a low cost. It is effective in manufacturing yellow boards economically.

In addition, according to an embodiment of the present invention, in addition to the above-mentioned effect of increasing incombustibility, a yellow board with a porous structure is provided by foaming and extruding the yellow board, thereby providing a yellow board with improved thermal insulation and sound absorption properties. It works.

In particular, since this does not require additional processes such as adhering sound absorbing and insulating materials to the conventional yellow board, it has the effect of lowering the overall process cost and supplying multifunctional yellow boards to consumers at a low price.

1 and 2 are flow charts of a method for manufacturing a non-flammable yellow board according to an embodiment of the present invention.
3 and 4 are examples of raw material composition ratios for manufacturing a non-flammable yellow board according to an embodiment of the present invention.
Figure 5 is a photograph of a prototype of a non-flammable yellow board according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that this aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain example aspects of one or more aspects. However, these aspects are illustrative and some of the various methods in the principles of the various aspects may be utilized, and the written description is intended to encompass all such aspects and their equivalents.

As used herein, “embodiment,” “example,” “aspect,” “example,” etc. may not be construed to mean that any aspect or design described is better or advantageous than other aspects or designs. .

Additionally, the terms "comprise" and/or "comprising" mean that the feature and/or element is present, but exclude the presence or addition of one or more other features, elements and/or groups thereof. It should be understood as not doing so.

Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. It has the same meaning. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the embodiments of the present invention, have an ideal or excessively formal meaning. It is not interpreted as

The present invention relates to a method of manufacturing a non-combustible yellow board. This invention relates to a method of producing a non-combustible yellow board, using magnesium sulfate and magnesium oxide, quartz sand, vegetable materials, first recycled material, second recycled material, wood pulp, pine resin, and flame retardants. The aim is to provide a manufacturing technology for this enhanced yellow board.

As a description of the present invention to achieve the above-mentioned object, the present invention will be described in more detail below with reference to the accompanying drawings, and a plurality of drawings are included to explain one or more technical features or components constituting the invention. These can be referenced simultaneously.

Referring to FIG. 1, a flow chart of a method for manufacturing a non-flammable yellow board according to an embodiment of the present invention is shown.

As shown in FIG. 1, in the present invention, a stirring and reaction step (S10) can be performed in which raw materials are first measured and prepared in a preset amount by putting them into a stirrer and mixing them to react.

Specifically, in the above-described step S10, main ingredient raw materials and auxiliary ingredient raw materials can be prepared as raw materials.

More specifically, raw materials containing at least one of magnesium sulfate and magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, resin rock, and flame retardant can be prepared as the above-described main ingredient raw materials. A solidification enhancer can be prepared as the above-described auxiliary ingredient raw material.

At this time, the above-mentioned magnesium sulfate and magnesium oxide have a high melting point of 1185 degrees, magnesium sulfate with flame retardancy, fire resistance, and water resistance, and magnesium sulfate with a high melting point of 2800 degrees, excellent base resistance and electrical insulation at high temperatures, flame retardancy, lightweight function, high strength, It can be understood as a mixture of magnesium oxide, which has excellent heat retention and insulation functions, mixed in a 1:1 ratio.

This mixture of magnesium sulfate and magnesium oxide has excellent antibacterial properties that inhibit the growth of bacteria and mold, and exhibits moisture-resistant properties. In the present invention, it may preferably contain 30.0 to 40.0% by weight based on 100% by weight of the total raw materials. there is.

In addition, the above-mentioned quartz sand is sand composed of small grains of quartz, and can usually be obtained from granite, rhyolite, metamorphic rock, and sedimentary rock. It has a hexagonal crystalline form and is made of network-shaped silicon dioxide. The Mohs hardness is 7, the specific gravity is 2.65, and colorless, transparent or milky white quartz sand can be used.

Preferably, the above-described quartz sand may be included in an amount of 8.5 to 12.0% by weight based on 100% by weight of the total raw material.

In addition, the above-mentioned raw materials may include vegetable substances as described above, and it is preferable to understand that the above-mentioned vegetable substances are substances containing at least one of rice husk, vegetable powder, and wood flour.

At this time, the above-mentioned rice husk can be used as a substitute for wood, saving wood resources, and contains silicon, so it has excellent far-infrared radiation function, insulation, flame retardancy, and incombustibility, and is flammable in the event of a fire. It has no odor and has the characteristic of not emitting toxic gas even if ignited.

At this time, according to an embodiment of the present invention, the above-described rice husk may be used in a pulverized state through grinding processing, or whole rice husk that has not undergone grinding processing may be used, and the present invention is not limited thereto.

In addition, the above-mentioned vegetable powder has a porous structure, so it has excellent heat and sound insulation properties, and is light in weight and easy to handle. It will be possible to grind vegetable materials such as rice straw, cork, etc. and process them into powder form for use. In addition to materials, various recyclable plant materials may be used, and the present invention is not limited thereto.

In addition, the above-mentioned wood flour can be understood as recycled wood flour formed by crushing wood chips or sawdust, which are by-products generated when processing raw wood, and the above-mentioned wood flour can be used as a substitute for wood, saving wood resources. This has the effect of reducing raw material costs by recycling by-products generated during wood processing rather than disposing of them.

Meanwhile, plant material containing at least one of the above-mentioned rice husk, vegetable powder, and wood flour may be included in 12.8 to 18.0% by weight of 100% by weight of the total raw materials.

Additionally, the raw materials described above may include the first recycled material as described above. Specifically, the first recycled material described above is a recycled material excluding metal, and is preferably used including at least one of waste fiber and waste paper.

At this time, the above-mentioned waste fiber may be obtained by grinding and processing waste fiber containing at least one of vegetable fibers such as cotton, ramie, hemp (hemp), mineral fibers such as glass fiber and rock wool, and the above-mentioned waste paper may be newspaper or white paper. It may be obtained by grinding and processing waste paper containing at least one of , vellum paper, and corrugated cardboard.

On the other hand, waste fiber containing fabric components exhibits excellent sound absorption, heat retention, sound insulation, and flame retardancy properties, and the above-described waste paper exhibits excellent sound insulation, heat retention, and moisture absorption properties.

Preferably, the first recycled material containing at least one of the above-described waste fiber and waste paper may be included in 11.0 to 15.6% by weight of 100% by weight of the total raw material.

In addition, the above-mentioned raw materials may include second recycled materials as described above. The above-mentioned second recycled materials are recycled materials excluding metals, and all of the recycled materials that can be crushed and processed except for the above-mentioned waste fiber and waste paper. It can be understood as a recycled material.

At this time, the above-mentioned second recycled material includes at least one of waste glass powder and stone powder, and it is preferable to use it after grinding and processing, and the above-mentioned second recycled material is 6.8 to 9.6% by weight based on 100% by weight of the total raw materials. It can be included as a %.

Additionally, according to an embodiment of the present invention, any recycled material that can be pulverized, such as waste gypsum, waste concrete, or silica sand, may be used as the above-described second recycled material, but the present invention is not limited thereto.

Meanwhile, a light yellow board can be produced according to the natural color of the raw materials of the above-mentioned vegetable material, first recycled material, and second recycled material, and vegetable materials that were conventionally discarded by treating them as manure or waste. , by recycling the first and second recycled materials, there is an effect of upcycling and the manufacturing cost is reduced by using recycled raw materials, making it possible to produce a yellow board economically.

In addition, the color of the yellow board can be realized as light yellow or dark yellow depending on the raw material components of the vegetable material, first recycled material, and second recycled material itself used in the production of the non-combustible yellow board, and the present invention It is not limited to this.

Meanwhile, according to another embodiment of the present invention, a non-flammable yellow board may be manufactured including only one raw material among the vegetable material, the first recycled material, and the second recycled material, and in this case, 100% by weight of the total raw material. Among them, it is preferable to include 30.6 to 43.2% by weight.

Additionally, the above-mentioned raw materials may include wood pulp. Specifically, wood pulp is made of cellulose fibers obtained from vegetable materials or vegetable waste fibers, and includes pine, spruce, poplar, aspen, beech, chestnut, bamboo, and eucalyptus. It may be obtained by processing wood containing at least one of the following. However, while wood pulp may be white without any additional processing, there may be wood pulp that may be brown. In the case of brown color, it can be bleached using a common bleach used in wood pulp processing. You might as well use it.

In addition, the wood pulp described above may be included in an amount of 6.0 to 8.4% by weight based on 100% by weight of the total raw materials.

Meanwhile, according to one embodiment of the present invention, when the color of the wood pulp contained in the above-described raw material is white, the color of the non-combustible yellow board will be light yellow, and the color of the wood pulp will be brown. In this case, the color of the non-combustible yellow board is dark yellow, and the color of the yellow board may be realized depending on the color of the wood pulp itself, but the present invention is not limited thereto.

In addition, the above-mentioned raw materials may include pitchstone, which is also called pitchstone and is produced by rapid cooling of acidic lava and has the characteristic of being glassy with almost no phenocrysts, which are relatively large crystals, and is preferably used as a whole. It may be added in an amount of 3.4 to 4.8% by weight based on 100% by weight of raw materials.

In addition, the above-mentioned raw materials may include a flame retardant. Specifically, the above-mentioned flame retardant can be understood as a treatment agent to prevent continued combustion or spread when the manufactured yellow board is ignited and the flame is removed.

For example, the above-mentioned flame retardants include at least one of the phosphorus-based compounds ammonium phosphate, phosphonate, phosphate, phosphine oxide, phosphazene, or , it is preferable to use at least one of the inorganic metal compounds aluminum hydroxide and magnesium hydroxide.

In addition, the above-mentioned flame retardant is added in an amount of 4.3 to 6.0% by weight based on 100% by weight of the total raw material, but since flame retardant performance can be maximized when two or more components are used in combination compared to when it consists of just one component, It would be desirable to selectively use two or more components in combination.

Meanwhile, it would be possible to use a flame retardant containing at least one of carbon black, zinc oxide, and titanium dioxide as the above-mentioned flame retardant, but the present invention is not limited thereto.

Additionally, the raw materials described above may contain a solidification enhancer as described above as an auxiliary ingredient.

Specifically, the solidification enhancer described above can be understood as a concept of an additive to harden a liquid material, and is also commonly used as a hardener or hardening accelerator.

As an example, the solidification enhancer described above may be potassium thiocyanate in an amount of 1.7 to 2.3% by weight based on 100% by weight of the total raw materials. At this time, other solidification enhancers other than the above-mentioned potassium thiocyanate may be used, but the above-mentioned addition range is maintained so as not to harm the composition ratio of the entire raw material.

That is, in step S10 of FIG. 1, a process of stirring and mixing magnesium sulfate, magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, pine resin, flame retardant, and solidification enhancer is added to the stirrer. It can be understood that this is the case.

At this time, the rotation speed of the stirrer may be maintained at 300 rpm to 2,500 rpm, and the stirring time may be 3 to 10 minutes.

Meanwhile, after performing the above-described step S10, an extrusion molding step (S20) is included in which a foaming agent is added to the mixture obtained in the above-described step S10 to foam the mixture, and then the mixture is extruded into a preset board shape in an extrusion mold of an extruder.

At this time, the above-mentioned foaming agent may be added at a ratio of 0.9 to 1.2% by weight based on 100% by weight of the total raw materials of the mixture obtained in step S10. For example, hydrogenated chlorofluorocarbon is used as the foaming agent to make the mixture porous. It is extruded as a molded product with a structure.

This foaming treatment using a foaming agent processes the yellow board to be manufactured into a foam, which improves the insulation and sound insulation properties of the yellow board itself, unlike the conventional method of attaching separate insulation and sound absorption materials in a sandwich panel manner to improve insulation and sound insulation properties. It is possible to manufacture yellow boards with increased functionality and without adding complex process steps.

Meanwhile, in the extrusion molding in step S20, the mixture obtained in step S10 is put into the cylinder of the extruder equipped with a screw, and the mixture is crushed and mixed in the cylinder by the action of the screw, and then into the extrusion mold mounted at the cylinder outlet. This is achieved by carrying out the process of transferring, and when extrusion molding is performed in step S20, a first curing treatment step (S30) is performed in which the molded product being cured in the extrusion mold is cured by heating.

Specifically, in the above-described step S30, the molded product is cured by exposing it to steam rising at 10 to 15 degrees Celsius per unit time, and the maximum rising temperature of the steam is preferably in the range of 70 to 90 degrees Celsius.

The curing treatment conditions of the S30 stage are effective in minimizing curing cracks and securing long-term strength by maintaining thermal stability by gradually increasing the temperature of the steam curing, and the molding at the S30 stage has a gradual temperature increase rate. By having , the effect of being able to secure the required compressive strength when removing the extrusion mold can also be expected.

At this time, in order to minimize heat loss of steam when performing the above-described step S30, the curing treatment may be performed in a closed boiler room, etc.; however, such boiler room is equipped with air conditioning equipment to induce air circulation. It is desirable to prevent deterioration of curing quality.

In addition, after performing the above-described step S30, a second curing treatment step is performed in which the molded product for which the first curing treatment has been completed is demolded from the extrusion mold, the surface of the molded product is washed, and the cleaned molded product is cured by heating it with steam. (S40) is performed.

Specifically, in the above-described step S40, the molded product is cured by exposing it to steam rising at 10 to 15 degrees Celsius per unit time, and isothermal is maintained for 3 to 5 hours at 70 to 90 degrees Celsius, which is the highest temperature range of the steam. ensure that it is carried out.

On the other hand, this second curing treatment condition prevents cracks from occurring at the curing temperature by not setting the temperature higher than necessary, but prevents the occurrence of dry shrinkage cracks in the molded product or delays the drop in the internal temperature of the molded product, thereby delaying the curing period. It provides the effect of solving this problem of excessive length.

In addition, in the above-described second curing treatment step, the molded product is cured by exposing it to steam of 70 to 90 degrees Celsius, which is the highest temperature range, for 3 to 5 hours, so that the flame retardant in the molded product described above is changed to a solid state, thereby providing a non-flammable effect. to provide.

Meanwhile, referring to FIG. 2 as another preferred embodiment of the present invention, in the present invention, after performing the second curing treatment step (S40), a surface treatment step (S50) of polishing the surface of the molded product using a sanding machine and, S50 A dust removal step (S60) in which dust generated while polishing the molded product is removed by means including at least one of compressed air and a dust collector may be further performed.

In addition, although not explicitly shown in FIGS. 1 and 2, a quality inspection step (not shown) may be further included to inspect the quality of the yellow board that has been finally manufactured after performing steps S10 to S40 or S10 to S60. These quality inspection items can be understood as examining the degree of crack occurrence, shape defects, etc.

Of course, once the above-mentioned quality inspection step is completed, the packaging and shipping step (not shown) of packaging and shipping the inspected yellow board as a finished product may be performed.

Meanwhile, at 200 and 210 in Figure 5, photos of a prototype of a yellow board that has been manufactured according to the method for manufacturing a non-combustible yellow board of the present invention are attached, and at 200 and 210 in Figure 5, vegetable substances and agents added to the yellow board are attached. 1 You can check the yellowness and the rough shape of the yellow board depending on the components of the recycled material and the second recycled material.

Also, referring to FIG. 3, it can be seen that at 100 in FIG. 3, the added weight relative to the raw material composition ratio of the non-combustible yellow board is indicated by the minimum weight and maximum weight for each raw material.

In addition, at 110 in FIG. 4, as the most preferred example of a non-flammable yellow board, the composition ratio relative to the added weight of each raw material is more clearly indicated.

That is, the non-flammable yellow board of the present invention is based on 100% by weight of raw materials, 35% by weight of magnesium sulfate and magnesium oxide, 10% by weight of quartz sand, 15% by weight of vegetable matter, 13% by weight of first recycled material, and 2% by weight of second recycled material. When containing 8% by weight of materials, 7% by weight of wood pulp, 4% by weight of resin, 5% by weight of flame retardant, 2% by weight of solidification enhancer, and 1% by weight of foaming agent, a yellow board with the best incombustibility, durability, sound absorption and insulation properties is manufactured. It can be understood as something that can be done.

Meanwhile, water, which is a solvent added for mixing these raw materials, may be understood to contain 0.3 to 0.7 parts by weight, based on 1 part by weight of the total raw materials shown at 110 in FIG. 4.

Overall, according to one embodiment of the present invention, a yellow color with increased incombustibility is produced, including magnesium sulfate and magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, pine resin, and flame retardant as main ingredients. It has the effect of providing a board manufacturing method.

In addition, according to one embodiment of the present invention, the manufacturing cost is reduced by recycling raw materials such as rice husk, vegetable powder, wood powder, waste fiber, and waste paper, which are excellent in flame retardancy and sound absorption but are discarded materials, making it possible to manufacture at a low cost. It is effective in manufacturing yellow boards economically.

In addition, according to an embodiment of the present invention, in addition to the above-mentioned effect of increasing incombustibility, a yellow board with a porous structure is provided by foaming and extruding the yellow board, thereby providing a yellow board with improved thermal insulation and sound absorption properties. It works.

In particular, since this does not require additional processes such as adhering sound absorbing and insulating materials to the conventional yellow board, it has the effect of lowering the overall process cost and supplying multifunctional yellow boards to consumers at a low price.

As described above, although the embodiments have been described with limited examples and drawings, those skilled in the art will understand that various modifications and variations can be made from the above description. Terms such as “include,” “comprise,” or “have” described above mean that components that are not specifically stated to the contrary may be included, and therefore do not exclude other components, but rather include other components. It should be interpreted to include more. In addition, the scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

Claims (7)

In the method of manufacturing a non-flammable yellow board,
A stirring and reaction step of reacting the raw materials by putting the prepared raw materials in a preset amount into a stirrer and stirring and mixing them;
A forming step of adding a foaming agent to the mixture obtained in the stirring and reaction step to foam it, and then extruding it into a board shape in an extrusion mold of an extruder;
A first curing treatment step of curing the molded product in the extrusion mold by heating it with steam; and,
A second curing treatment step of demolding the molded product for which the first curing treatment has been completed from the extrusion mold, washing the surface, and curing the cleaned molded product by heating it with steam;
The stirring and reaction steps are,
As the raw materials, magnesium sulfate, magnesium oxide, quartz sand, vegetable material, first recycled material, second recycled material, wood pulp, pine resin, and flame retardant are prepared as main ingredients,
Prepare a solidification enhancer as an auxiliary ingredient,
The stirring and reaction steps are,
Based on 100% by weight of total raw materials, 30.0 to 40.0% by weight of the magnesium sulfate and magnesium oxide, 8.5 to 12.0% by weight of the quartz sand, 12.8 to 18.0% by weight of the vegetable material, 11.0 to 15.6% by weight of the first recycled material, and the second It is characterized by comprising 6.8 to 9.6% by weight of recycled material, 6.0 to 8.4% by weight of wood pulp, 3.4 to 4.8% by weight of resin, 4.3 to 6.0% by weight of flame retardant, and 1.7 to 2.3% by weight of solidification enhancer. A method of manufacturing a yellow board with non-combustibility.
delete delete According to paragraph 1,
When performing the forming step,
By adding and mixing the foaming agent at a ratio of 0.9 to 1.2% by weight based on the weight of the mixture obtained in the stirring and reaction step, the mixture is extruded into a molded product that has a porous structure and has a non-flammable effect. A method of manufacturing a yellow board with non-combustibility.
According to paragraph 1,
The first curing treatment step is,
The molding is cured by exposing it to steam rising at 10 to 15 degrees Celsius per unit time, and the maximum rising temperature of the steam is in the temperature range of 70 to 90 degrees Celsius,
The second curing treatment step is,
The molding is cured by exposing it to steam rising at 10 to 15 degrees Celsius per unit time, and isothermal is maintained for 3 to 5 hours at 70 to 90 degrees Celsius, which is the highest temperature range of steam rise. How to make yellow board.
According to clause 5,
The second curing treatment step is,
Manufacturing of a non-flammable yellow board, characterized in that the flame retardant in the molding is changed to a solid state and has a non-flammable effect by exposing the molding to steam of 70 to 90 degrees Celsius, which is the highest temperature range, and curing the molding for 3 to 5 hours. method.
According to paragraph 1,
After performing the second curing treatment step,
A surface treatment step of polishing the surface of the molded product using a sanding machine; and,
A method of manufacturing a non-flammable yellow board, characterized in that a dust removal step of removing dust generated while grinding the molded product through compressed air and a dust collector can be further performed.