KR20150131437A - Humidity controllable elastic board and method for preparing humidity controllable elastic board - Google Patents

Abstract

Provided is a humidity controllable elastic board comprising: foamed resin foam having an opened air hole structure; and a fine porosity ceramic particle placed in an internal surface of the opened air hole.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an elastic board for humidity control,

To an elastic board for humidity control, and to a method for manufacturing an elastic board for humidity control.

Insulation was used to prevent condensation in the room. In other words, this is a method in which the temperature of the indoor air is prevented from being lowered by installing the heat insulating material on the inside and the outside of the wall, thereby causing less condensation. However, it is difficult to expect a perfect heat insulation performance. Even if the room temperature is maintained higher than the outdoor temperature through the relatively heating, when the supply amount of water to the room is high, there is a problem that condensation easily occurs due to high absolute humidity.

An embodiment of the present invention provides a moisture-resilient elastic board as a functional building material exhibiting humidity control performance.

Another embodiment of the present invention provides a method of manufacturing the elastic board for humidity control.

In one embodiment of the present invention, there is provided a moisture-resistant elastic board comprising a foamed resin foam including an open pore structure and a microporous ceramic particle supported on the inner surface of the open pore.

The open pores formed in the foamed resin foam may be structured such that pores having an average diameter of 1500 mu m or less are connected to each other to communicate with each other.

The porosity of the foamed resin foam may be 10 to 95% by volume.

The open porosity of the foamed resin foam may be 10 to 95% by volume.

The foamed resin foam may be at least one selected from the group consisting of a urethane resin, a polyvinyl chloride resin, an acrylic resin, a phenol resin, an acrylonitrile-butadiene-styrene copolymer resin, a polyethylene resin, a polypropylene resin, a polystyrene resin, . ≪ / RTI >

The microporous ceramic particles may include pores having an average diameter of 1 nm to 100 nm.

The microporous ceramic particles may have an average particle diameter of 1 탆 to 100 탆.

The microporous ceramic particles may include at least one selected from the group consisting of zeolite, volcanic clay, diatomaceous earth, gamma alumina, silica gel, fumed silica, and combinations thereof.

100 parts by weight of the foamed resin foam and 10 to 80% by weight of the microporous ceramic particles.

The foamed resin foam may be a foam formed of a soft resin, and the elastic board for humidity control may be formed as a flexible film.

The thickness of the film may be 1 mm to 20 mm.

In another embodiment of the present invention,

Preparing a sol solution by mixing a foaming resin, microporous ceramic particles and a foaming agent;

Injecting the sol solution into a molding mold, foaming and molding the solution; And

Removing the foamed and molded foam formed body and drying the foamed molded body to produce a moisture-resistant elastic board;

The present invention also provides a method of manufacturing an elastic board for humidity control.

The foaming resin can be foamed while forming open pores by the foaming step.

The foaming agent is blown up by bringing the foaming temperature of the foaming step to a temperature higher than the temperature range at which the expansion ratio of the foaming agent is maximized, thereby to form the opened pores.

The additive of the sol solution may include at least one selected from the group consisting of a thickener, a plasticizer, a flame retardant, an antibacterial agent, an antifungal agent, a heat stabilizer, a lubricant, and combinations thereof.

As described above, the above-described elastic board for humidity control can exhibit the humidity control performance to keep the indoor humidity constant, effectively prevent and suppress condensation in the room, and effectively suppress microbial propagation such as indoor mold.

FIG. 1 is a cross-sectional view illustrating a construction of a residential building according to an embodiment of the present invention.
2 is a schematic process flow diagram of a method of manufacturing an elastic board for humidity control according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

In one embodiment of the present invention, there is provided a moisture-resistant elastic board comprising a foamed resin foam including an open pore structure and a microporous ceramic particle supported on the inner surface of the open pore.

The elastic board for humidity control is a building material having a humidity control function and can be easily attached to an indoor wall surface of a building to control indoor humidity.

The elastic board for humidity control is formed of a foamed resin foam having an open pore structure and absorbs moisture when the humidity is high and emits moisture when the humidity is low while room air communicates with the inside of the open pores.

If the foamed resin foam has a high content of moisture, moisture may flow back to the surface of the foamed resin foam, thereby creating an environment capable of breeding microorganisms such as fungi. The elastic board for humidification may also have an inner surface It is possible to obtain an effect of double-absorbing moisture, so that moisture can be re-discharged to the surface of the elastic board for humidification, that is, condensation can be effectively suppressed.

The microporous ceramic particle contains micropores therein and has absorption capability of absorbing moisture when the humidity is high due to micropores and releasing moisture when the humidity is low.

The elastic board for humidity control can further improve the humidity control performance of the indoor air by supporting the microporous ceramic particles on the inner surface of the open pores of the foamed resin foam.

The above-described elastic board for humidity control exhibits the humidity control performance as described above, so that the indoor humidity can be kept constant, effectively preventing and suppressing indoor condensation, and effectively suppressing microbial propagation such as mold inside.

The difficulty in effectively solving the problem of condensation on the interior wall of a building using the heat insulating material is as described above. The elastic board for humidity control can be effectively applied as a building material for solving such a condensation problem. In addition, since the properties of the heat insulating material are mainly composed of various layers for completing the insulation and adhesion, many materials are used, and the manufacturing process is complicated and expensive. On the other hand, Can be easily carried out, and thus it is possible to solve the problem of condensation simply.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a cross section of the elastic board (b) for humidity control.

The elastic board 20 for humidity control can be attached to the concrete wall surface 10 through the adhesive layer 30 as shown in FIG. The microporous ceramic particles (2) are supported in the open pores in a part of the opened pores (5) of the foamed resin foam (1) In the enlarged view of the ceramic particles 2, fine pores 6 are formed inside and the water 3 is absorbed and discharged in accordance with the ambient humidity by the fine pores 6.

By applying the elastic board for humidity control to an indoor wall of a building, condensation is generated on the indoor wall to effectively prevent the occurrence of mold. In addition, since the elastic board is used as a base material of a foamed resin foam, an adiabatic effect can also be obtained incidentally. Condensation has been a problem since insulation usually has a closed pore structure. Therefore, the elastic board for humidity control can also be used as a heat insulating material for preventing condensation.

The foamed resin foam may be produced by foaming using a known foamed resin material, wherein pores formed by foaming are connected to each other to form open pores. Since the foamed resin foam forms an open pore structure, it can communicate according to external humidity conditions and exhibit humidity control performance.

The pore structure of the foamed resin foam may include a closed cell formed by closing the wall surfaces of the pores and not connected to the other pores, a pore structure formed by partially or entirely opening at least one of the pore walls, And an open cell associated with the cell.

Pores are formed in the course of foaming or extrusion foaming of the resin composition for foaming to form the foamed resin foam, and as the pores are grown, the pore wall surface separating the adjacent two pores becomes thinner. As such, the thinned pore wall surface ruptures or tears and tears to form open pores. The degree and the rate at which the wall surface between adjacent bubbles become thinner due to the growth of the bubbles may vary depending on the melt strength and viscosity of the raw resin contained in the resin composition for blowing. For example, as the melt strength and viscosity of the raw material resin are increased in the course of foaming the resin composition for foaming, it is difficult for the wall surface between neighboring bubbles to be thin, so that the growth of bubbles may be difficult to occur. The lower the viscosity, the more easily these walls become thinner and the growth of bubbles can occur quickly. If the melt strength and viscosity of the raw material resin are too low, the bubble structure may not be stably maintained due to collapse or breakage of the foam structure during the foaming curing or extrusion foaming. As described above, the foamed resin foam may be prepared so as to include an open pore structure by appropriately adjusting the melt strength and viscosity of the resin composition for foam.

The porosity of the foamed resin foam may be about 10% to about 95% by volume. By having the porosity in the above numerical range, it is possible to impart a desired level of humidity control performance.

As described above, indoor air can be communicated through the open pores, and when room air of high humidity is introduced into the open pores, moisture is absorbed into the foamed resin foam through the wall surface of the open pores, The supported microporous ceramic particles also absorb moisture. When the room air having a low humidity is introduced into the open pores, water is released from the foamed resin foam through the wall surface of the open pores and the microporous ceramic particles carried in the open pores also release moisture.

Therefore, the open porosity can be a direct factor in imparting humidity control performance. The open porosity of the foamed resin foam may be from about 10% to about 95% by volume. As described above, the foamed resin foam has an open porosity in the above-mentioned numerical range, so that a desired level of humidity control performance can be imparted.

The open porosity can be measured according to a variety of known methods, and an exemplary measurement method can be measured based on a standard on the absorption rate of KS M ISO 7214: 2013. Specifically, the thermostatic chamber is filled with distilled water, and the foamed foam specimens 10 cm, 10 cm, and 1 cm in length, height, and height are immersed sufficiently so as not to come out of the distilled water, and then kept for 24 hours. The specimen taken from the water is immersed in ethanol (95% by weight or more) for about 5 minutes, and then the surface is dried and weighed (W _w ). After drying for 24 hours at 60 ° C for 24 hours, the mass of the specimen is again measured (W _i )

The open porosity (P _o ) as the porosity calculated using the water content is determined by the following equation.

[Equation 1]

Open porosity _{(P o) = 100 X [} (W w - W i) (g) X 1 / distilled water density ^{(g / cm 3)] /} [ test piece volume (cm ^3)]

The open pores formed in the foamed resin foam may have a structure in which pores with an average diameter of about 1500 mu m or less, specifically about 700 mu m to about 100 mu m, are connected to each other to communicate with each other. If the size of the unit cell of the open pore is excessively large, moisture may be condensed by gravity in a state of absorbing moisture in a high content, and may be discharged again as condensation water.

The foamed resin foam may be formed of a resin such as a urethane resin, a polyvinyl chloride (PVC) resin, an acrylic resin, a phenol resin, an acrylonitrile-butadiene-styrene copolymer (ABS) resin, a polyethylene (PE) resin, PP) resin, polystyrene (PS) resin, and the like, and known resins capable of forming a foaming resin may be used without limitation, and may also include combinations thereof.

The elastic board for humidification absorbs and releases moisture into the micropores of the microporous ceramic particles to more effectively impart the humidity control performance.

The microporous ceramic particles contain fine pores and can exhibit humidity control performance more effectively by capillary phenomenon.

The microporous ceramic particles also have water absorbing ability, and when the foamed resin foam contains moisture in a high content, moisture is condensed by gravity and water is re-released again, and condensation water flowing to the surface of the moisture- It is possible to suppress the phenomenon that occurs.

The microporous ceramic particles may be carried in the open pores as particles having an average particle diameter of about 1 탆 to about 100 탆. If the size of the microporous ceramic particles is too small or less than the above range, the price rises. If the size is excessively larger than the above range, the pores of the formed foam may be blocked, have.

The microporous ceramic particles may include pores having an average diameter of about 1 nm to about 100 nm. By using the porous ceramic particles including fine micropores of the above-mentioned size, the humidity control performance can be further improved. If the size of the fine pores in the microporous ceramic particles is too small, the moisture absorption may occur, but the moisture permeation may not be smoothly performed, so that reuse after ventilation may be difficult. If the size of the micropores is larger than the above range, the number of the micropores and the surface area may decrease, and the moisture absorption and moisture absorption may be sharply reduced as a whole.

The microporous ceramic particles may include materials capable of exhibiting humidity control performance while including fine pores, such as zeolite, volcanic clay, diatomaceous earth, gamma alumina, silica gel, fumed silica, etc., May be used.

The elastic board for humidity control may include about 10 to about 80 wt% of the microporous ceramic particles in the whole. If the content of the microporous ceramic particles is less than the content range of the elastic board for humidity control, the moisture absorptive and desorptive property of the elastic board for humidity control is insignificant, and the performance of sucking and dewing moisture may be weak. Also, if the content of the microporous ceramic particles exceeds the above content range and the content of the microporous ceramic particles becomes too high, the softness of the board is lowered, and the elasticity may be lost and peeled off from the resin.

When the foamed resin foam is made of a foam formed of a soft resin, the elastic board for humidity control is formed as a film having ductility, which is advantageous in that the construction is more convenient.

For example, it is convenient to keep the elastic board for humidity control as a film and then to keep it in a roll shape, and it can be directly attached to the wall of the concrete after being cut to a proper size.

For example, the moisture-resistant elastic board can be manufactured as a flexible film having a thickness of about 1 mm to about 20 mm.

In another embodiment of the present invention, there is provided a method for producing a foamed article, comprising: preparing a sol solution by mixing a foaming resin, microporous ceramic particles and a foaming agent; Injecting the sol solution into a molding mold, foaming and molding the solution; And a step of demolding and drying the foamed and molded foam formed body to produce an elastic board for humidity conditioning.

The above-described elastic board for humidity control can be manufactured by the above manufacturing method.

2 is a schematic process flow diagram of a method of manufacturing an elastic board for humidity control according to another embodiment of the present invention.

First, as a resin composition for foaming, a resin for foaming, microporous ceramic particles, a foaming agent, a dispersant, and an additive are mixed to prepare a sol solution.

Details of the foamable resin and the microporous ceramic particles are as described above. For example, the microporous ceramic particles include pores having an average diameter of about 1 nm to about 100 nm.

The foaming agent may be any known material capable of causing the foamed resin foam to have a predetermined degree of porosity. For example, a blowing agent of chlorofluorocarbon series, hydrogenated chlorofluorocarbon series, or hydrocarbon series may be used as the foaming agent, and an inert gas such as carbon dioxide, nitrogen, helium, argon, neon or the like may be used. It is not.

And the foaming resin is foamed by forming the open pores by the foaming step.

The sol solution is prepared by adjusting the content and viscosity so as to form open pores.

A method of forming open pores will be exemplarily described. By blowing the foaming agent at a temperature higher than the temperature range at which the expansion ratio of the foaming agent is maximized, the foaming agent can be opened to form open pores.

The sol solution may further include at least one selected from the group consisting of a thickener, a plasticizer, a flame retardant, an antibacterial agent, an antifungal agent, a heat stabilizer, a lubricant, and the like.

The sol solution may further contain an additive suitably known in accordance with the purpose. For example, it is possible to add a pigment of a desired color to impart color to the elastic board for humidity control. In addition, a dispersant can be used to evenly disperse the microporous ceramic particles on the inner surface of the open pores of the foamed resin foam.

And the open porosity of the foamed and formed foam formed article is (10) to (95) volume%.

Hereinafter, examples and comparative examples of the present invention will be described. The following embodiments are only examples of the present invention, and the present invention is not limited to the following embodiments.

( Example )

Example  One

 , 63 parts by weight of an acrylic resin Poly 240N (manufactured by NP Chemical), 20 parts by weight of gamma alumina as microporous ceramic particles, 15 parts by weight of MS-140DS (manufactured by Dongjin Semiconductor) and 2 parts by weight of dispersant BYK-154 To prepare a sol solution.

The sol solution was thoroughly mixed with stirring, then charged into a molding mold, and foamed at 150 ° C. The molded article was demolded and dried to prepare a moisture-resistant elastic board. The foaming agent has a temperature range of 115 ° C to 130 ° C at which the foaming magnification is maximized. When the foaming agent is foamed at a higher temperature, the foaming agent is blown to form open pores.

Comparative Example  One

In the examples, a resilient board for humidity conditioning was manufactured in the same way except that a sol solution containing no microporous ceramic particles was prepared and used.

Comparative Example  2

, 63 parts by weight of an acrylic resin Poly 240N (manufactured by NP Chemical), 20 parts by weight of gamma alumina as microporous ceramic particles, 15 parts by weight of MS-140DS (manufactured by Dongjin Semiconductor) and 2 parts by weight of dispersant BYK-154 To prepare a sol solution.

The sol solution was stirred and mixed well, then charged into a molding mold, foamed at 130 DEG C, the molded article was demoulded and dried to produce a moisture-resistant elastic board. Since the foaming temperature is in the range of 115-130 ° C, which is the temperature range where the foaming agent does not break, closed pores are formed.

evaluation

Experimental Example  One

First, in order to confirm that the open pores are formed in Example 1 and Comparative Example 1-2, the open porosity was measured according to the standard of absorption rate of KS M ISO 7214: 2013.

Specifically, the thermostatic chamber is filled with distilled water, and the foamed foam specimens 10 cm, 10 cm, and 1 cm in length, height, and height are immersed sufficiently so as not to come out of the distilled water, and then kept for 24 hours. The specimen taken from the water is immersed in ethanol (95% by weight or more) for about 5 minutes, and then the surface is dried and weighed (W _w ). After drying for 24 hours at 60 ° C for 24 hours, the mass of the specimen is again measured (W _i )

The open porosity (P _o ) as the porosity calculated using the water content was measured by the following equation, and it is shown in Table 1 below.

[Equation 1]

Open porosity _{(P o) = 100 X [} (W w - W i) (g) X 1 / distilled water density ^{(g / cm 3)] /} [ test piece volume (cm ^3)]

division Open porosity (volume%) Example 1 20 Comparative Example 1 18.5 Comparative Example 2 1.2

Experimental Example  2

The humidity control capability of the elastic board for humidification manufactured in Example 1 and Comparative Example 1-2 was evaluated according to ISO-24353

Specifically, a specimen (size 10 cm × 10 cm × 0.5 cm) was prepared in a chamber capable of keeping the temperature and humidity constant, and was allowed to stand at 23 ° C. and 50% relative humidity for 72 hours and then moved to a chamber at 23 ° C. and 90% After 12 hours of standing, the weight is measured, and the amount of weight change due to moisture absorption is measured. The sample is allowed to stand in a chamber at 23 ° C and 50% for 12 hours again, and the weight change due to moisture absorption is measured. Then, the moisture absorption amount and the moisture absorption amount were added and divided by 2 and multiplied by 100 to calculate the moisture absorptive and desorptive amount per unit area (m ² ) of the specimen.

The evaluation results are shown in Table 2 below.

division Moisture absorption (g / m ² ) Moisture content Absorption and desorption amount Example 1 44.9 39.9 42.4 Comparative Example 1 4.1 4.3 4.2 Comparative Example 2 5.2 5.7 5.45

From the above results, in Example 1, excellent water absorption ability was confirmed in an environment with high humidity, but in Comparative Example 1-2, water absorption ability was insignificant.

In addition, when the humidity is low, it emits the absorbed moisture, so that it can be fully reused, and the humidity control function is confirmed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

1: foamed resin foam
2: microporous ceramic particles
3: Moisture
5: Open pore
6: Microstructure
10: Concrete wall
20: Elastic board for humidity control
30: Adhesive layer

Claims (15)

1. A moisture-resisting elastic board comprising a foamed resin foam including an open pore structure and a microporous ceramic particle supported on an inner surface of the open pore.
The method according to claim 1,
The open pores formed in the foamed resin foam have a structure in which pores having an average diameter of 1500 mu m or less are connected to each other to communicate with each other
Elastic board for humidity.
The method according to claim 1,
The foamed resin foam has a porosity of 10 to 95% by volume
Elastic board for humidity.
The method according to claim 1,
Wherein the foamed resin foam has an open porosity of 10 to 95% by volume
Elastic board for humidity.
The method according to claim 1,
The foamed resin foam may be at least one selected from the group consisting of a urethane resin, a polyvinyl chloride resin, an acrylic resin, a phenol resin, an acrylonitrile-butadiene-styrene copolymer resin, a polyethylene resin, a polypropylene resin, a polystyrene resin, Containing
Elastic board for humidity.
The method according to claim 1,
Wherein the microporous ceramic particles comprise pores having an average diameter of 1 nm to 100 nm
Elastic board for humidity.
The method according to claim 1,
The microporous ceramic particle has an average particle diameter of 1 to 100 mu m
Elastic board for humidity.
The method according to claim 1,
Wherein the microporous ceramic particles comprise at least one selected from the group consisting of zeolite, volcanic clay, diatomaceous earth, gamma alumina, silica gel, fumed silica, and combinations thereof
Elastic board for humidity.
The method according to claim 1,
100 parts by weight of the foamed resin foam and 10 to 80% by weight of the microporous ceramic particles
Elastic board for humidity.
The method according to claim 1,
The foamed resin foam is a foam formed of a soft resin, and the elastic board for humidity control is formed into a flexible film
Elastic board for humidity.
11. The method of claim 10,
Wherein the film has a thickness of 1 mm to 20 mm
Elastic board for humidity.
Preparing a sol solution by mixing a foaming resin, microporous ceramic particles and a foaming agent;
Injecting the sol solution into a molding mold, foaming and molding the solution; And
Removing the foamed and molded foam formed body and drying the foamed molded body to produce a moisture-resistant elastic board;
Wherein the elastic board is made of an elastic material.
13. The method of claim 12,
And the foaming resin is foamed while forming open pores by the foaming step
A method of manufacturing an elastic board for humidity control.
14. The method of claim 13,
The foaming agent is foamed by bringing the foaming temperature of the foaming step to a temperature higher than the temperature range at which the expansion ratio of the foaming agent is maximized, thereby to open the foaming agent to form open pores
A method of manufacturing an elastic board for humidity control.
13. The method of claim 12,
The additive of the sol solution includes at least one selected from the group consisting of a thickener, a plasticizer, a flame retardant, an antibacterial agent, an antifungal agent, a heat stabilizer, a lubricant,
A method of manufacturing an elastic board for humidity control.

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