KR102122204B1 - Environment-friendly ceiling material and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an eco-friendly ceiling material and a method for manufacturing the same, and more particularly, to an eco-friendly ceiling material and a method for manufacturing the same, using natural-derived materials to provide excellent incombustibility and water resistance.
In the present invention, the first step of preparing a mixture of any one or more of 250 to 350 parts by weight of vermiculite, 150 to 250 parts by weight of mineral wool; Non-combustible resin 300 containing 25 to 35 parts by weight of sodium silicate, 10 to 20 parts by weight of lithium silicate, 5 to 10 parts by weight of water-soluble epoxy, 15 to 20 parts by weight of fumed silica, and 20 to 30 parts by weight of coal based on 100 parts by weight of the mixture A second step of preparing an incombustible composition by mixing ˜400 parts by weight; A third step of manufacturing a ceiling material by mixing and forming 150 to 200 parts by weight of an eco-friendly powder composed of at least one of pine needle powder, rice husk powder, and sawdust powder with respect to 100 parts by weight of the non-combustible composition. The non-combustible resin is an environmentally friendly ceiling material characterized in that it further comprises 20-25 parts by weight of feldspar and a method for manufacturing the same.

Description

Environmental-friendly ceiling material and manufacturing method thereof

The present invention relates to an eco-friendly ceiling material and a method for manufacturing the same, and more particularly, to an eco-friendly ceiling material and a method for manufacturing the same, using natural-derived materials to provide excellent incombustibility and water resistance.

In general, ceiling materials are used to finish the ceiling, and the ceiling materials produced and installed before 2004 contain asbestos harmful to the human body, and were replaced by the Ministry of Environment.

In particular, since large amounts of ceiling materials are inevitably used in large buildings such as schools and public buildings, complete removal of asbestos is not possible even after removal and replacement of ceiling materials containing harmful substances.

In order to solve this situation, the direction of the technology of ceiling materials using materials derived from nature that are harmless to the human body and also have soundproofing and heat preservation functions during installation was prominent.

However, since natural-derived materials are easily burned, it has been difficult to apply them as ceiling materials, so it is desperately required to develop and research new types of ceiling materials that use natural-derived materials to improve the non-combustible performance.

Publication of Korean Patent Publication No. 10-2015-0144519, Dec. 28, 2015.

The present invention was invented in order to solve the above-mentioned problems, and has an object to provide an eco-friendly ceiling material and a method for manufacturing the same, which are made of natural non-combustible materials and excellent water resistance.

The present invention for achieving the above object, the first step of producing a mixture of any one or more of 250 to 350 parts by weight of vermiculite, 150 to 250 parts by weight of mineral wool; Non-flammable resin containing 25 to 35 parts by weight of sodium silicate, 10 to 20 parts by weight of lithium silicate, 5 to 10 parts by weight of water-soluble epoxy, 15 to 20 parts by weight of fumed silica, and 20 to 30 parts by weight of medium carbon based on 100 parts by weight of the mixture A second step of preparing an incombustible composition by mixing 300 to 400 parts by weight; And a third step of manufacturing a ceiling material by mixing and forming 150 to 200 parts by weight of an eco-friendly powder composed of at least one of pine needle powder, rice husk powder and sawdust powder with respect to 100 parts by weight of the non-combustible composition. The non-flammable resin in the second stage is a technical point of the method for manufacturing an eco-friendly ceiling material, which further comprises 20-25 parts by weight of feldspar.

And the present invention for achieving the above object is also made of an environmentally friendly ceiling material characterized in that it is manufactured by the above manufacturing method.

The eco-friendly ceiling material according to the present invention and a method for manufacturing the same according to the present invention by the solving means of the above-described subject can not only express the characteristics inherent to natural-derived materials such as pine needles, chaff, and sawdust, but also have the effect of improving non-combustibility and water resistance. .

1 is a ceiling material according to a first preferred embodiment of the present invention.
2 is a ceiling material according to a second preferred embodiment of the present invention.
3 is a ceiling material according to a third preferred embodiment of the present invention.
4 is a ceiling material according to a fourth preferred embodiment of the present invention.
5 is a ceiling material according to a fifth preferred embodiment of the present invention.
6 is an installation diagram according to a preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

First, the first step is a step of preparing a mixture of any one or more of 250 to 350 parts by weight of vermiculite and 150 to 250 parts by weight of mineral wool. (S1)

That is, the first step is to stably hold the base of the properties of the finished ceiling material, and refers to a step of forming a mixture by mixing any one or more of 250 to 350 parts by weight of vermiculite and 150 to 250 parts by weight of mineral wool.

First, vermiculite has a non-toxic/odorless property, and is made of porosity, lightweight, and has a low thermal conductivity, so that it can improve the non-combustible and insulating effect.

That is, vermiculite is a fine powder mineral having a similar appearance to mica in its natural state, and has a property of expanding 8 to 30 times when heated to 100 to 1,200°C. The density is 0.07 to 0.30 g/cm 3 and is caused by countless pores. The porous structure has light weight, heat conductivity of 0.06 ㎉/mh℃ or less, and has good heat retention, as well as fire resistance of 1,400±50℃, and insulation.

As described above, vermiculite has optimal insulation, has good absorption and ion exchange ability, is chemically non-toxic and stable.

Since vermiculite used in the first step is a fine powder in the form of fine particles having a hollow structure inside, workability may be improved if it is less than 250 parts by weight, but the ceiling material of desired properties cannot be obtained from non-combustible and insulating surfaces, and 350 parts by weight If exceeded, the non-combustible and insulating effect may be improved, but it is preferable that the vermiculite is added in the range of 250 to 350 parts by weight since there is a possibility that physical properties due to deterioration of workability may be deteriorated due to excessive use of vermiculite.

For reference, the smaller the size of vermiculite, the better the applicability, but is preferably in the range of 0.5 to 1 mm considering various factors. If the size of vermiculite is less than 0.5 mm, there is a problem that the surface condition of the ceiling material becomes somewhat rough, and if it exceeds 1 mm, there is a problem of cracking in the ceiling material installed on the ceiling of the building, so vermiculite is 0.5 to 1 mm (preferably Preferably, it has a size in the range of 0.8 mm).

Second, mineral wool is an inorganic fiber that has excellent heat resistance and excellent sound absorption and flame retardant properties to improve the properties of ceiling materials.

Particularly, the reason why mineral wool is used in the present invention is that it has been discouraged from being used as it has been confirmed that it harms the surrounding environment by emitting gas, which is a fine but volatile organic material, in the case of organic materials such as polyurethane foams. Because it has been taken.

When mixing 250-350 parts by weight of vermiculite and 150-250 parts by weight of mineral wool as in the first step of the present invention, the characteristics of mineral wool with high particle density, high pressure resistance and high resistance to mechanical damage compared to vermiculite By exerting, the density representing the weight is also small, thereby reducing the overall weight of the ceiling material.

In addition, the reason for the process of first mixing the vermiculite and the mineral wool before preparing the non-combustible composition is to obtain an optimal mixing ratio between the vermiculite and the mineral wool so that various properties such as heat resistance, sound absorption and non-combustibility can be stably provided to the ceiling material. It is to do.

At this time, if the mineral wool is less than 150 parts by weight, high pressure resistance and high resistance due to mechanical damage cannot be imparted to the ceiling material. The mineral wool is preferably added in the range of 150 to 250 parts by weight.

However, in the first step, any one of 250 to 350 parts by weight of vermiculite and 150 to 250 parts by weight of mineral wool may be used alone.

Next, the second step is based on 100 parts by weight of the mixture, 25 to 35 parts by weight of sodium silicate, 10 to 20 parts by weight of lithium silicate, 5 to 10 parts by weight of water-soluble epoxy, 15 to 20 parts by weight of fumed silica, 20 to 30 parts of medium carbon This is a step of preparing a non-combustible composition by mixing 300 to 400 parts by weight of a non-combustible resin containing 20 to 25 parts by weight of feldspar and feldspar. (S2)

Specifically, the second step is to obtain a non-combustible composition having stable physical properties by mixing the mixture with the non-combustible resin, 100 parts by weight of the mixture prepared in the first step, 25 to 35 parts by weight of sodium silicate, and 10 to 20 parts of lithium silicate. It can be said to be a step of obtaining an incombustible composition by mixing 300 to 400 parts by weight of an incombustible resin consisting of 5 parts by weight of water, 5 to 10 parts by weight of water-soluble epoxy, 15 to 20 parts by weight of fumed silica, 20 to 30 parts by weight of heavy coal and 20 to 25 parts by weight of feldspar. have.

Here, if less than 300 parts by weight of non-flammable resin is added, it is insignificant to impart non-flammable performance to the ceiling material, and there is a danger of accident in case of fire. When it exceeds 400 parts by weight, the amount of non-flammable resin is excessively large, and Since the appearance is poor, it is preferable that the non-combustible resin is contained in 300 to 400 parts by weight.

First, sodium silicate is a component for increasing the bonding force between the components.

That is, sodium silicate is a type of silicate, and silicate is a substance in which the hydrogen atom of salicylic acid is replaced with a metal atom. In other words, sodium silicate is a substance in which the hydrogen atom of salicylic acid is replaced with sodium.

Here, if the sodium silicate is less than 25 parts by weight, its content is too small to increase the binding strength with other components, and when it exceeds 35 parts by weight, the pH is increased to 9.0 or higher, and alkalinity becomes strong, making it impossible to function as a ceiling material.

Second, lithium silicate is a water-soluble inorganic material having a large molar ratio and permeability, and is a composition that strengthens the rigidity and hardness of the constructed ceiling material by stably maintaining viscosity even with temperature changes.

The reason for using the lithium silicate is that there are no harmful substances, it keeps the nonflammable performance of the ceiling material stably even at high temperature deterioration, and it not only prevents corrosion, but also strengthens the surface strength of the finished ceiling material.

At this time, if the lithium silicate is less than 10 parts by weight, the non-combustible performance of the ceiling material decreases and the bonding strength between components decreases, and the viscosity may decrease. Since peeling of the coating film may occur due to viscosity formation, it is preferably added in a range of 10 to 20 parts by weight.

Third, water-soluble epoxy performs an adhesive function for bonding non-combustible resins to eco-friendly powders, and does not generate harmful substances during construction of ceiling materials, thereby improving the working environment of workers and preventing harmful substances from occurring in the event of fire, thereby promoting stability. It is a configuration to do.

If the water-soluble epoxy is less than 5 parts by weight, there is a problem that the miscibility between the non-combustible composition and the eco-friendly powder is not uniformly achieved. When the water-soluble epoxy exceeds 10 parts by weight, the amount of the water-soluble epoxy is excessively large, so that the non-combustible material exhibits non-combustible performance. Since there are minor problems below, it is preferable to be added in a range of 5 to 10 parts by weight.

Fourth, fumed silica is a structure to prevent the phenomenon of separation from the concrete ceiling after the ceiling material construction in the building, and to improve the adhesion to the ceiling.

In other words, if the fumed silica is less than 15 parts by weight, it is insignificant to prevent the phenomenon of falling off from the ceiling, and if it exceeds 20 parts by weight, the physical properties become too stiff when molded in the form of a ceiling material, resulting in poor product properties. It is desirable to be included in the range.

Fifth, medium coal plays the role of a pigment, and is a structure that can impart color to the ceiling material.

At this time, if the content of the coal is less than 20 parts by weight, there is a concern that the function by the pigment may be insignificant, and if it exceeds 30 parts by weight, the physical properties or appearance of the ceiling material may be poor, so the coal is preferably included in 20 to 30 parts by weight. .

Sixth, feldspar is an important component of the present invention, and is an aluminum silicate mineral, with a Mohs hardening of 6, specific gravity of 2 to 2.7, and a direction of splitting of 90°, showing white, gray, dark brown, etc. It is a configuration that can increase the water resistance by improving the over-strength.

In particular, in the case of ceiling materials that have been used in the past, water resistance is insufficient, and when moisture is generated due to condensation, the ceiling material is not dissolved properly in water, and in many cases, the ceiling material is peeled from the ceiling. In the present invention, by adding feldspar, it is intended to improve the water resistance by improving the water resistance.

As a result of numerous experiments conducted by the inventors of the present invention, it was confirmed that when feldspar was added in an amount of less than 20 parts by weight, the structure of the ceiling material was not dense, and thus water resistance of the ceiling material could not be satisfied, and feldspar exceeded 25 parts by weight. When added, the physical properties may be somewhat enhanced, but it was confirmed that there is a disadvantage in that the workability is poor as wrinkles or cracks are generated after construction, and thus it was found that feldspar is preferably added in an amount of 20 to 25 parts by weight.

Additionally, it is recommended to use feldspar having a size of 100 to 200 mesh. If the particles have a particle size of less than 100 mesh, the particles are too large to support moldability, and also have the disadvantage of not contributing to the improvement of water resistance. This is because having a particle exceeding the rather small particle has a disadvantage that the loss rate of feldspar increases during the working process.

Finally, the third step is a step of manufacturing a ceiling material by mixing and molding 150 to 200 parts by weight of an eco-friendly powder composed of at least one of pine needle powder, rice husk powder and sawdust powder with respect to 100 parts by weight of the non-combustible composition. (S3)

That is, the third step refers to a step of manufacturing in a plate-like shape attached to the ceiling by inserting 150 to 200 parts by weight of the eco-friendly powder into 100 parts by weight of the non-combustible composition and then compressing the mixture into a mold or the like.

First, since pine needles have an inner epidermis inside the epidermis as well as the epidermis and the epidermis, moisture evaporation is suppressed, and pine needles contain a resin called pine resin, which further reduces moisture evaporation and protects wounds and pathogens. It acts to prevent intrusion.

These pine needles contain most of the main ingredient of phytoncide, terten, which acts as a sterilizer and antiseptic. In addition, it stimulates the central nervous system of the body to make you feel good and to remove the depressed mind.

In other words, phytoncide refers to a variety of volatile substances emitted by plants to chase bacteria, fungi, insects, and pests and prevent other plants from growing right next to them. And the fragrance is good.

Moreover, the structure of the pine needles is composed of the epidermis and the inner epidermis, which is resistant to drying and does not freeze in sub-zero weather, and is filled with an oil component called rosin, which accelerates hardening when mixed with non-combustible compositions, thus accelerating the curing speed according to the mixed amount of the pine needle powder. In addition to being able to control, it is naturally achieved with non-combustibility. Accordingly, the fragrance of pine needles is maintained as it is, and it helps to prevent harmful diseases of the human body, and improves the special role of interior and exterior materials.

For the above-described reason, in the third step of the present invention, it is preferable that pine needle powder is added in a range of 150 to 250 parts by weight (preferably, 200 parts by weight). If it is less than 150 parts by weight, the phytoncide content is insufficient and natural ingredients are added to the ceiling material. This is because it is difficult to supply sufficiently, and if it exceeds 250 parts by weight, too much pine needle powder is added, so that physical properties are not good.

For reference, if the pine needle powder has a size of less than 100 µm, the particles themselves are too fine, so there is a high risk of leaking to the outside due to the blowing phenomenon when mixing, and if the size exceeds 200 µm, the particles are too large and the mixing ability is good. Since it is not possible, it is preferable that the particles of pine needle powder have a size in the range of 100 to 200 μm (more preferably 150 μm).

Second, rice husks are formed in the outer and endothelial structures and contain porous silica between them to protect them from viruses, pests and bacteria.

In particular, the more the rice is cooked, the more it moves to the chaff. The chaff has the following characteristics. First, rice husk is made of a porous structure, has good heat insulation and sound absorption, has a low specific gravity, and has excellent thermal insulation efficiency with a thermal conductivity of 0.048w/mk. Second, rice husk is uniquely combined with silica and cellulose, so water penetration and mold decomposition are not good. Third, the chaff's silica releases negative ions and far infrared rays to promote blood circulation and to relieve fatigue, as well as to activate endorphin secretion. It also serves to moisturize the skin. Fourth, chaff is not well-burned, and corruption is not good.

Here, if less than 100 parts by weight of rice husk powder is added, the miscibility with pine needle powder and sawdust powder is not good. On the other hand, when it is added in excess of 200 parts by weight, the amount of pine needle powder and sawdust powder added is relatively small, so the properties of the ceiling material Since it is not satisfactory, the chaff powder is preferably added in a range of 100 to 200 parts by weight (preferably, 150 parts by weight).

Additionally, if the chaff is crushed to a size of less than 100 μm, the loss rate is high because the particles are too fine. Since the surface is not smooth, it is preferable that the chaff powder is crushed to a size of 100 to 200 μm (most preferably 150 μm).

Third, sawdust acts to create a subtle wood scent that spreads phytoncide from the trees throughout the building.

Here, sawdust has excellent humidity control ability, excellent insulation, and does not easily access insects. In particular, sawdust purifies the indoor air to make fresh air, which improves the air quality, helping patients with atopy, asthma, and insomnia. Additionally, sawdust is also excellent in sound insulation, reducing ambient noise.

Sawdust powder having this feature may be included in the range of 100 to 200 parts by weight. If the sawdust powder is less than 100 parts by weight, there is a risk of moisture condensation due to insufficient humidity control ability, and if it exceeds 200 parts by weight or less Since it is confirmed that the more excellent effect is not expressed compared to the amount of added, it is preferable to add 100 to 200 parts by weight (preferably, 150 parts by weight).

Sawdust powder, like pine needle powder and rice husk powder, has a size of less than 200㎛, causing a phenomenon of flying, which results in a large loss of sample and poor productivity. If it has a size exceeding 300㎛, it does not spread smoothly on the wall surface during spraying of wallpaper. , It is preferably crushed to have a particle size in the range of 200 ~ 300㎛ (more preferably 250㎛).

However, in the third step, any one of 150-250 parts by weight of pine needle powder, 100-200 parts by weight of rice husk powder, and 100-200 parts by weight of sawdust powder may be used alone.

Hereinafter, the embodiment of the ceiling material manufactured according to the preferred embodiment of the present invention can be variously changed as follows.

1 is a ceiling material according to a first preferred embodiment of the present invention. Referring to FIG. 1, it can be seen that the contents of the second and third steps proceed in the same manner, but the ceiling material specimens manufactured using only vermiculite in the first step are shown.

2 is a ceiling material according to a second preferred embodiment of the present invention. Referring to FIG. 2, it can be seen that the contents of the second and third steps proceed in the same way, but the ceiling material specimens produced by using vermiculite and mineral wool together in the first step are shown.

3 is a ceiling material according to a third preferred embodiment of the present invention. Referring to FIG. 3, it can be seen that the contents of the first and second steps are the same, but the ceiling material specimens manufactured using only the pine needle powder in the third step are shown.

4 is a ceiling material according to a fourth preferred embodiment of the present invention. Referring to Figure 4, it can be seen that the contents of the first step and the second step are the same, but the third stage shows the specimen of the ceiling material manufactured using only sawdust powder.

5 is a ceiling material according to a fifth preferred embodiment of the present invention. Referring to FIG. 5, it can be seen that the contents of the first step and the second step are the same, but the third step shows the specimen of the ceiling material manufactured using only rice husk powder.

6 is an installation diagram according to a preferred embodiment of the present invention. Referring to FIG. 6, the ceiling material shows that it can be installed on the ceiling in various ways, such as a screw fixing type or an adhesive fixing method.

Based on these FIGS. 1 to 6, as a result of performing a water resistance test according to the boiling water resistance test, it was confirmed that no wrinkles or cracks were generated in the ceiling material.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be capable of various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the claims, and all technical ideas within the equivalent range should be interpreted as being included in the scope of the present invention.

Claims (2)

A first step of preparing a mixture of any one or more of vermiculite 250-350 parts by weight and mineral wool 150-250 parts by weight;
Non-flammable resin containing 25 to 35 parts by weight of sodium silicate, 10 to 20 parts by weight of lithium silicate, 5 to 10 parts by weight of water-soluble epoxy, 15 to 20 parts by weight of fumed silica, and 20 to 30 parts by weight of medium carbon based on 100 parts by weight of the mixture A second step of preparing an incombustible composition by mixing 300 to 400 parts by weight; And
The third step of manufacturing a ceiling material by mixing and molding 150 to 200 parts by weight of an eco-friendly powder made of at least one of pine needle powder, rice husk powder and sawdust powder with respect to 100 parts by weight of the non-combustible composition;
The non-combustible resin in the second step,
Method of manufacturing an eco-friendly ceiling material, characterized in that it further comprises 20-25 parts by weight of feldspar. Eco-friendly ceiling material,
Eco-friendly ceiling material, characterized in that manufactured by the manufacturing method of claim 1.

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