KR20200012305A - Eco-friendly Structural Magnesium Board with Red Clay Pozzolan and Manufacturing Method thereof - Google Patents

Abstract

The present invention relates to an eco-friendly magnesium board for construction containing red clay pozzolan and a manufacturing method thereof. In order to solve an issue that an existing magnesium board used variously for construction can be easily broken and cracked by a shock due to its low hardness and tensile strength, an issue that an existing magnesium board is excessively bent when exposed to a high temperature or sunlight, an issue that smell is disgusting when a cement enhancer is used for increasing hardness, and an issue that a harmful substance causes a skin irritation and respiratory difficulty, the eco-friendly magnesium board is manufactured to have predetermined hardness through natural drying at no more than 70°C, which is a temperature where microorganisms are not eliminated, to maximize advantages of red clay pozzolan, the hardness is enhanced with a magnesia cement reaction without the application of a cement enhancer, flexural strength is enhanced with tempered glass fibers to achieve excellent marketability and workability, various microorganisms and minerals of red clay pozzolan are activated to maximize the microorganism effect and provide various allergy and skin disease relief effects, a sick house syndrome prevention effect, an odor removal effect for other components and so on, the consumption of harmful substances is reduced to improve health. To achieve the purpose, the eco-friendly magnesium board for construction containing red clay pozzolan includes red clay pozzolan, an activated magnesium oxide, a magnesium chloride, a tempered glass fiber mesh and sawdust.

Description

Eco-friendly Structural Magnesium Board with Red Clay Pozzolan and Manufacturing Method

The present invention relates to an eco-friendly magnesium board for construction containing ocher pozolan and a method for manufacturing the same, and more specifically, a conventional magnesium board used in various constructions is weak in tensile strength and hardness, and thus easily broken and cracked. To be able to get the best of ocher pozolan to improve the problems of severe bending when exposed to sunlight or high temperature, to improve the hardness, to improve the hardness, to make the smell very disgusting, to the problem of skin stinging and dyspnea caused by harmful substances. It is manufactured to have a certain hardness by drying at 70 ℃ or less, which does not kill microorganisms, reinforces hardness using magnesia cement reaction without using cement reinforcing agent, and reinforces bending strength by using reinforced glass fiber. It is excellent for various microorganisms and minerals Eco-friendly magnesium board for building that maximizes microbial effect, improves allergic and skin diseases, prevents sick house syndrome, removes bad smell of other components, and improves health by reducing the use of harmful substances. It relates to a manufacturing method.

In general, magnesium board for architecture (flaming magnesium board) has been used a lot because of the advantages such as flame retardant, waterproof, economical and warmth.

However, architectural magnesium board also has the following disadvantages.

Conventional magnesium board has a weak tensile strength and hardness, so it is easily broken and cracked in impact, a problem that a lot of dust is generated during cutting, a problem that allergy occurs when dust is blown due to the glass fiber that is weak in strength, absorption rate Problems such as frequent cracks due to the length change caused by high heights, problems with severe bending when exposed to sunlight or high temperatures, very disgusting smells using cement reinforcement to increase hardness, problems with skin stinging and difficulty breathing due to harmful substances have.

The magnesium board disclosed in Patent Registration No. 10-187237 "Magnesium board and its manufacturing method" is laminated on the upper and lower portions of the magnesium board layer to make a modified ocher layer by laminating the ocher layer, which is beneficial for health. Although it has been disclosed a magnesium board, a separately produced ocher layer has a severe cracking according to the characteristics of the ocher, and the longer the period of use, the more the phenomenon occurs, there has been room for improvement.

The present invention is devised to solve the conventional problems as described above, the conventional magnesium board used in various constructions are weak in tensile strength and hardness is easy to break and impact cracking, severely exposed to sunlight or high temperature 70 ℃ which does not kill microorganisms so as to get the best of ocher pozolan to improve the problem of bend, very bad disgust by using cement reinforcement to increase hardness, problems of skin stinging and difficulty in breathing due to harmful substances It is manufactured to have a certain hardness by using the following drying, reinforce the hardness using magnesia cement reaction without the use of cement reinforcing agent, excellent product properties and workability by reinforcing the bending strength using the reinforced glass fiber, Maximize microbial effect by activating various microorganisms and minerals It provides various effects of allergy and skin diseases, prevents sick house syndrome, removes bad smell of other components, and provides eco-friendly magnesium board for building and its manufacturing method that can improve health by reducing the use of harmful substances. There is a purpose.

The present invention for achieving the above object is achieved by providing an eco-friendly magnesium board containing ocher opozolan containing ocher pozolan, activated magnesium oxide, magnesium chloride and reinforced glass fiber mesh, sawdust and nonwoven fabric.

In addition, in the construction-friendly magnesium board containing the yellow oxopozolan, the magnesium board, 45 to 55% by weight ocher pozolan, 22 to 32% by weight of active magnesium oxide, 2.5 to 12.5% by weight of magnesium chloride It is preferred to include 0.5 to 1% by weight of reinforced glass fiber mesh, 1 to 5% by weight of sawdust, and 0.5 to 1% by weight of nonwoven fabric.

The present invention for achieving the above object is a mixing step (S100) of mixing 58 ~ 68% by weight of ocher pozzolanic powder, 30 to 40% by weight of active magnesium oxide powder and 2 to 7.5% by weight of sawdust; Stirring and chemical reaction start step (S110) of adding 7-17% by weight of water and 3-13% by weight of magnesium chloride powder and starting a chemical reaction while stirring at a temperature of 10-35 ° C .; A first nonwoven fabric placement step (S120) of laying a first nonwoven fabric of 0.2 to 0.5% by weight on the bottom of a mold for forming a magnesium board; A first tempered glass mesh batching step (S125) of laying the first reinforced glass fiber mesh of 0.2 to 0.5% by weight on the first nonwoven fabric; A board forming step (S130) of forming a board by injecting a mixture of the stirred and chemically reacted into the forming mold in which the first nonwoven fabric and the first reinforced glass fiber mesh are disposed; A second tempered glass mesh batching step (S140) of laying a second reinforced glass fiber mesh of 0.2 to 0.5% by weight on an upper surface of the mixture injected into the mold; A second nonwoven fabric placement step (S145) of laying a second nonwoven fabric of 0.2 to 0.5% by weight on the second reinforced glass fiber mesh; A primary drying and chemical reaction step (S150) of transferring the molding die to a first drying chamber maintaining a temperature of 38 to 43 ° C. and a relative humidity of 50 to 75% for 8 to 12 hours to dry and chemically react; A board separating step of separating the first dried board molding from the molding die (S160); Loess comprising a secondary drying and chemical reaction step (S170) to transfer the board molding to a second drying chamber maintaining a temperature of 38 ~ 43 ℃ and a relative humidity of 30 to 50% and dried for 48 to 72 hours The object is achieved by providing a method for manufacturing environmentally friendly magnesium board containing pozzolanic.

의 제1 화학반응과,

의 제2 화학반응이 일어나는 것이 바람직하다.In addition, in the manufacturing method of the eco-friendly magnesium board for building containing ocher pozolan, the stirring and chemical reaction start step (S110),

The first chemical reaction of

It is preferable that the second chemical reaction of.

In addition, in the manufacturing method of the eco-friendly magnesium board for building containing ocher pozolan, after the secondary drying and chemical reaction step (S170), the temperature of the drying chamber until the temperature of the secondary molded board molding is room temperature Slowly lowering board slow cooling step (S180); It is preferable to further include a; finishing step (S190) for cutting the slow-formed board molding to a certain size and finishing the board by removing dust from the cut surface.

The effects of the present invention are as follows.

Conventional magnesium boards used for various constructions have weak tensile strength and hardness, so they are easily broken and cracked due to impact, severely bent when exposed to sunlight or high temperature, and odor is very disgusting by using cement reinforcement to increase hardness. In order to improve skin stinging and respiratory distress caused by harmful substances, it is manufactured to have a certain hardness by drying below 70 ℃ so that microorganisms are not killed so as to get the best of ocher pozolan. Reinforced hardness by using magnesia cement reaction, and excellent product quality and workability by reinforcing flexural strength by using reinforced glass fiber, maximizing microbial effect by activating various microorganisms and minerals of ocherpozolan and various allergic and skin diseases Improvement effect, prevention of sick house syndrome, other components And a service such as deodorizing effect, is very useful inventions to provide a hazardous substance by reducing the use of environment-friendly construction magnesium board that can promote health and a method of manufacturing the same.

1 is a photograph showing the ocher pozzolanic powder used in the present invention
Figure 2 is a schematic diagram showing the configuration of an eco-friendly magnesium board to which the present invention is applied
Figure 3 is a flow chart of the manufacturing process of eco-friendly magnesium board to which the present invention is applied
4 and 5 is a front and back of the environment-friendly magnesium board to which the present invention is applied
6 is a drying chamber for drying the environment-friendly magnesium board to which the present invention is applied
7 is a photograph experimenting the strength of the eco-friendly magnesium board to which the present invention is applied
8 is a photograph experimenting the density of the eco-friendly magnesium board to which the present invention is applied
Figure 9 is a photo experiment experimenting the anion of the eco-friendly magnesium board to which the present invention is applied

Hereinafter, the present invention will be described in detail through preferred embodiments. However, the present embodiments should be understood to explain the present invention so that the present invention can be better understood, and the terminology or words used should not be construed as being limited to the common or dictionary meanings, and the inventors should consider their best inventions. Based on the principle that the concept of the term can be properly defined in order to explain the method, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention, and should not be understood as limiting the present invention.

The eco-friendly magnesium board 1 for construction of the present invention comprises ocher pozzolan, activated magnesium oxide, magnesium chloride, reinforced glass fiber mesh and sawdust.

First, look at the efficacy of natural ocherpozolan as follows.

a) Far-infrared emission effect of natural ocherpozolan powder

Collecting and pulverizing natural ocherocozolane mineral widely produced on the west coast of the Korean peninsula to produce natural ocherotzozolan powder having a particle size of 80 ~ 200mesh. The natural ocherocozolane powder prepared above was analyzed for component analysis and far infrared emission results. The components of natural ocherocozolane powder are calcium oxide 3-5%, silicon oxide 61-64%, aluminum oxide 12-18%, titanium oxide 0.5-0.7%, potassium 3.2-3.8%, sodium oxide 1-3%, iron oxide 4 ~ 5.5%, manganese oxide 0.01 ~ 0.07%, magnesium oxide 1.3 ~ 2%, phosphorus oxide 0.04 ~ 0.3%, germanium 0.000002% and the like.

In addition, the far infrared rays emitted from the natural ocherpozolan powder was measured by an FT-IR spectrophotometer at 40 ℃.

Far Infrared Emissivity (5 ~ 20㎛) Radiation energy (W / ㎡ ㎛, 40 ℃) Experiment 1 0.93

3.74 x

Experiment 2 0.92 3.73 x

The natural ocheropozolan powder emits a large amount of far-infrared wavelengths of 94-97%, which is beneficial to human health, and far-infrared rays are effective in fatigue recovery, blood circulation, circulatory system activation, capillary expansion, and odor removal.

For reference, far-infrared light is a far-infrared ray of 6 ~ 15 micron wavelength among the electromagnetic waves in the range of 0.76 ~ 1.00 micron, and maintains the proper body temperature of 36.5 ℃. There are three characteristics of far-infrared wavelengths: radiation, penetration, and resonance. The blood circulation is accelerated, heated, promoted growth, ionic, wet and dry, neutralizing and resonance. Among domestic natural minerals, silica, diatomaceous earth, alumina, biotite, and kaolin are known to emit far infrared rays.

b) effect of anion release from natural ocherpozolan

The amount of anion released from the natural ocherocozolane powder was tested by KICM-FIR-1042 method. As a result, the average amount of anions released from natural yellow oxopozolan powder was 972 / cc.

It emits a large amount of negative ions in natural minerals, and it is excellent for decomposition of volatile organic solvents generated in new buildings due to effects such as decomposition of harmful substances, oxygen supply, sterilization, and deodorization. It was able to feel refreshing during weather by removing carbon dioxide and odor generated at bedtime in a closed space. Negative ions generated through the negative ion generator has side effects on the human body when a large amount of contact, but the negative ions generated in nature have no side effects at all.

c) bactericidal effect of natural ocherpozolan powder

The natural ocherocozolane powder has a number of pores with porosity and has 99.9% sterilization effect of bacteria and bacteria in the air while in contact with air, and has an effect such as deodorization, mold killing, mite avoidance, and aphid avoidance.

d) Germanium Effect of Natural Ocherocozolane Powder

The natural ocherpozolan powder contains 2.0 ppm of germanium, which is 198 times higher in jade. (September 7, 2000, Korea Institute of Construction Materials, results from ICP analysis) Germanium is due to its semiconducting properties. Upon contact with the skin, germanium ions enter the body and are released outside the body within 20 to 30 hours with harmful substances to purify our body. In the Lourdes holy water, famous for its healing miracles, it has been shown that the germanium content in the water is effective in treating the disease.

In addition, due to the excellent antioxidant activity can be seen to increase the immunity when used in the living space of children or elderly people with weak immunity.

e) Wet and Dry Effect of Natural Ocherocozolane Powder

Natural ocherocozolane powder of the present invention has a wet and dry effect of maintaining the optimum humidity by absorbing or discharging moisture in accordance with the humidity in the air. This is also an effect on ocher, but natural ocherpozolan powder has a large number of pores due to its porosity, which is superior to ocher.

In addition, the moisture is absorbed due to the high humidity of the air, the low humidity in the air when released, the discharged air will discharge the sterilized air

Example 1

Eco-friendly magnesium board (1) for construction of the present invention is manufactured through the following method.

First, 58 to 68% by weight of ocher pozzolanic powder, 30 to 40% by weight of active magnesium oxide powder and 2 to 7.5% by weight of sawdust are mixed. [Mixing step (S100)]

As described above, the natural ocherocozolane powder, the active magnesium oxide powder, and the sawdust which have excellent efficacy are mixed well.

When the yellow oxopozolan enters less than 58% by weight, it is difficult to express the efficacy of ocheropozolan, and when the amount exceeds 68% by weight, the cost is too high to determine the proper component ratio to obtain the efficacy.

When the active magnesium oxide powder is less than 30% by weight, the tensile strength and hardness is lowered and weakened. When the magnesium oxide powder is more than 40% by weight, the weight becomes excessively heavy to obtain an appropriate strength ratio while obtaining the tensile strength and hardness.

In addition, the sawdust is a material for lowering the density and ductility of the board, if less than 2% by weight of the board is too hard and if the weight exceeds 7.5% by weight so that the board may be too low to determine the proper component ratio.

Next, 7 to 17% by weight of water and 3 to 13% by weight of magnesium chloride powder are added to the mixture mixed in the mixing step (S100), and the chemical reaction is started while stirring at a temperature of 10 to 35 ° C. And chemical reaction start step (S110)]

Since the water and the magnesium chloride powder should be chemically reacted with the active magnesium oxide in proportion, the component ratio is determined according to the ratio of the active magnesium oxide.

Therefore, water should not be less than 7% by weight or exceed 17% by weight, and the magnesium chloride powder was determined to have an appropriate component ratio within a range not to be less than 3% by weight or more than 13% by weight.

의 제1 화학반응과,

의 제2 화학반응이 일어나게 된다.The stirring and chemical reaction start step (S110),

The first chemical reaction of

The second chemical reaction of.

The first chemical reaction is a reaction of magnesium oxide and water to meet the magnesium hydroxide, the second chemical reaction is magnesium hydroxide obtained by the first chemical reaction, magnesium chloride and water meet the magnesium oxide reaction (Magnesium Oxychloride Cement) Is a chemical reaction.

Here, the magnesia cement reaction can be cured at a relatively high speed at room temperature to form a very high-margin artificial marble, which is a solidified gel type that can be processed into various building materials and high-grade decorative materials. .

Through the stirring and chemical reaction step 110, the mixture can be produced as an environmentally friendly magnesium board (1) for building having excellent tensile strength and hardness.

Next, lay 0.2 to 0.5% by weight of the first nonwoven fabric 21 on the bottom of the mold 10 for manufacturing the environment-friendly magnesium board. [First nonwoven fabric placement step (S120)]

The first nonwoven fabric 21 serves to flatten the surface of the board.

Next, 0.2 to 0.5% by weight of the first reinforced glass fiber mesh 22 is laid on the first nonwoven fabric 21. [First reinforced glass mesh batch step (S125)]

Reinforced fiberglass mesh greatly improves the flexural strength of the board.

Next, the mixture 30, which is stirred and chemically reacted, is injected into the molding die 10 in which the first nonwoven fabric 21 and the first reinforced glass fiber mesh 22 are arranged. [Board forming step (S130) )]

Next, 0.2 to 0.5% by weight of the second reinforced glass fiber mesh 42 is disposed on the upper surface of the mixture 30 injected into the molding die 10. [Second reinforced glass mesh batch step (S140)]

Next, 0.2 to 0.5% by weight of the second nonwoven fabric 41 is disposed on the second reinforced glass fiber mesh 42. [Second nonwoven fabric placement step (S145)]

Next, the mold 10 is transferred to a first drying chamber maintaining a temperature of 38 to 43 ° C. and a relative humidity of 50 to 75%, and dried for 8 to 12 hours. [Primary drying step (S150)]

As shown in FIG. 6, chemical reactions continue to occur in the composition while drying while maintaining the temperature and relative humidity in the first drying chamber, in which a fan, a heater and a plurality of ventilators are installed and carefully controlled. The temperature of 38 ~ 43 ℃ is the temperature at which chemical reactions can occur actively and should be dried while maintaining the relative humidity of 50 ~ 75% so that the chemical reaction occurs well with drying. Through this chemical reaction, the mixture is cured.

Next, the first dried board molding is separated from the molding die 10. [Board separation step (S160)]

Next, transfer the board molding to a second drying chamber maintaining a temperature of 38 ~ 43 ℃ and a relative humidity of 30 to 50% and dried for 48 to 72 hours. [Second drying step (S170)]

The temperature is the same as that of the first drying chamber, but the temperature is dried by lowering the relative humidity slightly. Similarly, chemical reactions that cure at the same time as drying continue.

Next, slowly lower the temperature of the drying chamber until the temperature of the secondary dried board molding reaches room temperature. [Board slow cooling step (S180)]

When the board molded product dried in a state higher than the normal temperature is directly contacted with a low room temperature, cracks are generated, and thus the temperature is gradually lowered in the second drying chamber until the board molded product reaches room temperature.

Next, the board is cooled to the same size at room temperature, cut into a saw to a certain size to remove the dust on the cutting surface to finish the board. [Finishing step (S190)]

The eco-friendly magnesium board for construction of the present invention produced through such a manufacturing process is manufactured to have a certain hardness by using 70 ° C. or less that does not kill microorganisms so as to obtain the advantages of ocher pozolan to the maximum, and magnesia without using cement reinforcing agent. Reinforced hardness by using cement reaction, and excellent product quality and workability by reinforcing bending strength by using reinforced glass fiber, and maximize various microorganisms and minerals by activating various microorganisms and minerals of ocher pozzolan and improving allergic and skin diseases It provides effects, prevention of sick house syndrome, and odor removal effect of other components, and it is to provide eco-friendly magnesium board for building which can improve health by reducing the use of harmful substances.

As a result of experiments with various environmentally friendly magnesium boards manufactured by the manufacturing method of the present invention, as shown in FIG. 7, excellent strength of 187N 19.5 mPa was shown, and lighter than 0.97 g / cm 3 of water as shown in FIG. 8. It was confirmed that the workability, such as transport and installation is very useful with the density, and as shown in FIG. 9, the anion value is 18 / cc at room temperature, and the anion value is released about 3 times as much as 6 / cc at low temperature. It was confirmed to be beneficial to health.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

<Description of the symbols for the main parts of the drawings>
1: Eco-friendly magnesium board for building construction of the present invention
10: forming mold
21, 41: first and second nonwoven fabric
22, 42: first and second reinforced glass fiber mesh
30: mixture of the present invention

Claims (5)

Eco-friendly magnesium board for construction containing ocher pozzolan, comprising ocher pozzolan, activated magnesium oxide, magnesium chloride, reinforced glass fiber mesh, sawdust and nonwoven fabric. The method of claim 1, wherein the magnesium board,
45-55% by weight ocher pozzolan, 22-32% by weight active magnesium oxide, 2.5-12.5% by weight magnesium chloride, 0.5-1% by weight reinforced glass fiber mesh, 1-5% by weight sawdust And, eco-friendly magnesium board for building containing ocher-pozolan, characterized in that it comprises 0.5 to 1% by weight of nonwoven fabric. Mixing step (S100) of mixing 58 to 68 wt% of ocher pozzolanic powder, 30 to 40 wt% of active magnesium oxide powder, and 2 to 7.5 wt% of sawdust;
Stirring and chemical reaction start step (S110) of adding 7-17% by weight of water and 3-13% by weight of magnesium chloride powder and starting a chemical reaction while stirring at a temperature of 10-35 ° C .;
A first nonwoven fabric placement step (S120) of laying a first nonwoven fabric of 0.2 to 0.5% by weight on the bottom of a mold for forming a magnesium board;
A first tempered glass mesh batching step (S125) of laying the first reinforced glass fiber mesh of 0.2 to 0.5% by weight on the first nonwoven fabric;
A board forming step (S130) of forming a board by injecting a mixture of the stirred and chemically reacted into the forming mold in which the first nonwoven fabric and the first reinforced glass fiber mesh are disposed;
A second tempered glass mesh batching step (S140) of laying a second reinforced glass fiber mesh of 0.2 to 0.5% by weight on the upper surface of the mixture injected into the mold;
A second nonwoven fabric placement step (S145) of laying a second nonwoven fabric of 0.2 to 0.5% by weight on the second reinforced glass fiber mesh;
A primary drying and chemical reaction step (S150) of transferring the molding die to a first drying chamber maintaining a temperature of 38 to 43 ° C. and a relative humidity of 50 to 75% for 8 to 12 hours to dry and chemically react;
A board separating step of separating the first dried board molding from the molding die (S160);
A second drying and chemical reaction step (S170), which transfers a board molding to a second drying chamber maintaining a temperature of 38 to 43 ° C. and a relative humidity of 30 to 50%, and dries for 48 to 72 hours. Method for manufacturing eco-friendly magnesium board containing pozzolan. The method of claim 3, wherein
The stirring and chemical reaction start step (S110),

The first chemical reaction of

The manufacturing method of eco-friendly magnesium board for building containing ocher-pozolan, characterized in that the second chemical reaction takes place. The method of claim 4, wherein
After the second drying and chemical reaction step (S170),
A board slow cooling step (S180) of slowly lowering the temperature of the drying chamber until the temperature of the secondary dried board molding reaches room temperature;
Cutting the slow cooled board molding to a certain size to the saw and finishing the step of finishing the board by removing the dust of the cutting surface (S190); manufacturing method of eco-friendly magnesium board for building containing ocher topozolan further comprising .

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