KR102304864B1 - Eco-friendly composition with excellent air purification function and antibacterial properties - Google Patents

Abstract

Disclosed in the present invention is an environmentally friendly composition having excellent air purification function and antibacterial properties. The environmentally friendly composition according to the present invention comprises one or more base of a first polymer resin, cement, and asphalt concrete; aluminum silicate; acryl amide; a second polymer resin; titanium dioxide; kaolin; and metallic ions.

Description

An eco-friendly composition with excellent air purification and antibacterial properties {ECO-FRIENDLY COMPOSITION WITH EXCELLENT AIR PURIFICATION FUNCTION AND ANTIBACTERIAL PROPERTIES}

The present invention relates to an eco-friendly composition that can be applied to packaging materials, paints, etc. due to its excellent air purification function and antibacterial properties.

In general, volatile organic compounds called VOCs (Volatile Organic Compounds) are toxic chemicals with carcinogenic properties among air pollutants that cause global warming and cause odors.

These VOCs include 31 substances such as benzene, acetylene, and gasoline, which cause serious problems such as leukemia, various cancers, central nervous system disorders, and abnormalities in human chromosomes. Since VOCs are also contained in building materials such as flooring and moldings, wallpaper and paints, the inclusion of these hazardous substances in buildings such as apartments is inevitable.

Recently, as the perception of the environment, especially the perception of the residential environment, pursues well-being, research on indoor air quality management measures and harmful pollutants is being actively conducted. To create a comfortable indoor environment by manufacturing the building material itself so that it does not contain harmful substances, or by coating the surface of the building material with materials such as paint to remove VOC, as well as removing VOC and securing deodorizing and antibacterial power. Various methods have been proposed.

In this regard, various road paving materials used to protect materials and obtain aesthetics or paints used in buildings/interiors are one of the things that require air purification function and antibacterial properties.

However, there is a limit to exhibiting eco-friendly characteristics with both an air purifying function and antibacterial properties, only adding a photocatalyst to various road pavement materials or paints used in buildings/interiors.

Therefore, there is a need to develop an eco-friendly composition having excellent air purification function and antibacterial properties.

An object of the present invention is to provide an eco-friendly composition having excellent air purification function and antibacterial properties.

It is also an object of the present invention to provide an eco-friendly composition capable of removing and decomposing air pollutants while reducing the calorific value.

It is also an object of the present invention to provide an eco-friendly composition excellent in abrasion resistance and heat insulation.

It is also an object of the present invention to provide an eco-friendly composition that can prevent slipping.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The eco-friendly composition according to the present invention comprises at least one base of the first polymer resin, cement, and asphalt; aluminum silicate; acrylamide; a second polymer resin; titanium dioxide; kaoline; and metal ions.

The first polymer resin includes at least one of an acrylic resin, a polyolefin-based resin, a polyvinyl chloride-based resin, a polyester-based resin, an aromatic vinyl-based resin, a polyurea resin, a urethane resin, a phenolic resin, a urea resin, and a melamine resin And, the second polymer resin may include a silicone-based resin.

Based on 100 parts by weight of at least one base of the first polymer resin, cement and asphalt concrete, 10 to 30 parts by weight of the aluminum silicate, acrylamide, the second polymer resin, titanium dioxide, kaolin, and metal ions may be included.

5 to 30 parts by weight of the aluminum silicate, 1 to 10 parts by weight of acrylamide, 0.1 to 1 parts by weight of the second polymer resin, 5 to 30 parts by weight of titanium dioxide, 0.1 to 10 parts by weight of kaolin, 0.1 to 10 parts by weight of metal ions can do.

The metal ion may include at least one of Ag ²⁺ , Cu ²⁺ , Zn ²⁺ , Ca ²⁺ , Ni ²⁺ , Fe ²⁺ and Fe ³⁺ .

The titanium dioxide may be in an anatase phase.

The eco-friendly composition according to the present invention has an excellent effect of air purification and antibacterial properties.

In addition, the eco-friendly composition according to the present invention can reduce the calorific value and at the same time remove and decompose air pollutants.

In addition, the eco-friendly composition according to the present invention is excellent in abrasion resistance and heat insulation, and has an effect of preventing a slipping phenomenon.

In addition, the eco-friendly composition according to the present invention can be applied to packaging materials, paints, and the like.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Also, when it is described that a component is "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components are "interposed" between each component. It is to be understood that “or, each component may be “connected,” “coupled,” or “connected” through another component.

Hereinafter, an eco-friendly composition having excellent air purification function and antibacterial properties according to some embodiments of the present invention will be described.

The eco-friendly composition according to the present invention contains the first polymer resin, at least one base of cement and asphalt, aluminum silicate, acrylamide, the second polymer resin, titanium dioxide, kaolin, and metal ions, and has excellent air purification function and antibacterial properties. It works.

In addition, the eco-friendly composition according to the present invention can reduce the calorific value and at the same time remove and decompose atmospheric environmental pollutants, have excellent wear resistance and thermal insulation properties, and have an effect of preventing a slipping phenomenon.

An eco-friendly composition having such an effect can be used for packaging materials, paints, and the like.

The eco-friendly composition has an organic material or/and an inorganic material as the main component, and by mixing aluminum silicate, acrylamide, second polymer resin, titanium dioxide, kaolin and metal ions, air purification function and antibacterial properties can be exhibited.

The base may be selected from an organic material such as the first polymer resin and an inorganic material such as cement and asphalt concrete according to the use of the composition.

The first polymer resin includes at least one of an acrylic resin, a polyolefin-based resin, a polyvinyl chloride-based resin, a polyester-based resin, an aromatic vinyl-based resin, a polyurea resin, a urethane resin, a phenolic resin, a urea resin, and a melamine resin can do.

Preferably, the first polymer resin may include an acrylic resin including methyl methacrylate.

Aluminum silicate has _{a chemical formula of 3Al 2} O ₃ ·2SiO ₂ (FW 426.05), and serves to reduce the calorific value.

Aluminum silicate fine powder has very low heat conduction because there is little contact between solid particles. In addition, since each particle is very dense, the flow of gas is difficult, so heat loss is small, and it is difficult to transmit by scattering radiant heat.

Accordingly, aluminum silicate has excellent heat shielding and heat reflection, and has low thermal conductivity, so it is not only eco-friendly but also can help improve durability.

Aluminum silicate has a hollow powder form, is light, has excellent compressive strength, and has a melting point of about 1500 ° C.

The aluminum silicate may have an average particle diameter of 10 to 100 μm. Preferably, the average particle diameter is 10 to 70 µm, more preferably 10 to 50 µm.

Since aluminum silicate has an average particle diameter of 10 to 100 μm, it not only has better heat shielding performance, but also does not modify the intrinsic properties of the material itself when applied to paints or packaging materials.

When aluminum silicate is completely dried after construction, fine aluminum silicate particles form a very uniform and dense layer in the packaging material, so it is very suitable for the physical properties required for paints or packaging materials.

In addition, the hollow aluminum silicate may have a hollow center, and may have a surface treated with metal ions to be described later.

For example, metal ions are coated on the hollow aluminum silicate surface in the form of a thin film to form a surface treatment layer, thereby having excellent dispersibility and further improving the air purification function and antibacterial properties of the eco-friendly composition.

The metal ion may include at least one of Ag ²⁺ , Cu ²⁺ , Zn ²⁺ , Ca ²⁺ , Ni ²⁺ , Fe ²⁺ and Fe ³⁺ . The surface treatment layer including metal ions may have a thickness of 0.1 to 10 nm. When the thickness of the surface treatment layer satisfies 0.1 to 10 nm, an air purification function and antibacterial property can be exhibited along with excellent dispersibility.

Acrylamide acts as a binder to uniformly adhere each component.

Acrylamide is a colorless crystal with _{the formula CH 2} =CHCONH ₂ obtainable by hydrolysis of acrylonitrile. Acrylamide utilizes a solution having a concentration of 50 to 90% by weight. Due to the uniform presence of acrylamide in the eco-friendly composition of the present invention, durability and mechanical strength can be improved.

The second polymer resin may include a silicone-based resin.

The silicone resin serves to improve physical properties such as durability and weather resistance.

Methods for preparing silicone resins are well known in the art, and many of these resins are commercially available. The silicone resin may be prepared by hydrolyzing a mixture of chlorosilane precursors in an organic solvent such as toluene.

As the silicone resin, a cross-linkable silicone resin and/or a non-cross-linkable silicone resin may be used, and a partially cross-linked silicone resin may also be used.

The silicone resin may have a repeating unit _{of [SiCH 3} CH _{3 O].}

The silicone resin may have a weight average molecular weight in the range of 500 to 100,000.

The silicone resin preferably has a melting point in the range of 50 to 200°C.

By satisfying the weight average molecular weight and melting point of the silicone resin in the above ranges, it is possible to maintain characteristics such as durability and weather resistance of the eco-friendly composition.

Additionally, the silicone resin may include silicone nanofibers. Nanofibers represent microfibers having a diameter of several nanometers to several hundreds of nanometers, and for example, silicon nanofibers have a diameter of about 5 to 100 nm and a structure having a fiber shape as silicon crystals grow in one direction.

By including the silicone nanofibers in the silicone resin, there is an effect of improving the strength characteristics as well as the durability of the composition.

For example, based on 100 parts by weight of the silicone resin, 1 to 10 parts by weight of silicon nanofibers may be included, and preferably 3 to 8 parts by weight.

Titanium dioxide has a function as a photocatalyst in the eco-friendly composition of the present invention. Titanium dioxide is photooxidatively decomposable, so when light is absorbed by titanium dioxide, two electron and hole carriers are created. Oxidation of holes generates hydroxy radicals with high oxidative decomposition power in water present in the atmosphere. The electrons react with oxygen to form superoxide radicals and then hydroxyl radicals. The generated hydroxyl radical oxidizes and decomposes organic compounds or viruses _{of CO, NO x} , SO _{x , and VOCs.}

As such, titanium dioxide _{not only reduces the concentration of harmful substances such as SO x} , NO _x , CO and VOC indoors or outdoors, but also improves abrasion resistance and antibacterial activity along with aluminum silicate. In addition, since titanium dioxide also has a micro size, as in the case of aluminum silicate, the particles are dense, making it difficult to flow the gas, thereby reducing the calorific value.

In addition, titanium dioxide-added paints and road paving materials become super hydrophilic when in contact with water, and water on the surface goes well with titanium dioxide, so that the contact angle with water spreads to less than 5 degrees. Accordingly, since it is possible to prevent slipping of cars, bicycles, in-line, etc. on the road, it is possible to exhibit a function of preventing safety accidents.

Titanium dioxide may be either rutile or anatase, but preferably an anatase phase.

Titanium dioxide may have an average particle diameter of 0.1 to 80 μm. Preferably, the average particle diameter is 0.1 to 70 m, more preferably 0.1 to 50 m.

Kaolin (kaolin) is _{mainly composed of kaolinite (kaolinite Al 2} O ₃ ·2SiO ₂ ·2H ₂ O) and halloysite (Al ₂ O ₃ ·SiO ₂ ·4H ₂ O), and feldspar is chemically weathered by carbonic acid and water. generated through action. Kaolin (kaolin) is one of the best soils. It is pure white or slightly gray, and is used as a raw material for ceramics.

Kaolin contains a large amount of minerals, silica, alumina, magnesium, organic compounds, germanium, and the like. Kaolin is excellent in emitting negative ions and far infrared rays by ultraviolet rays and has excellent air purification effect.

When kaolin is included in the eco-friendly composition, antibacterial properties are more excellent than the composition including loess and mud.

Kaolin may be particles having a size of 1 ~ 20㎛. When the particle size of kaolin satisfies 1 to 20 μm, it exhibits excellent hardness, as well as excellent dispersibility and stirrability with aluminum silicate.

Metal ions directly bind strongly to functional groups of bacteria to destroy bacterial cell membranes, or oxygen is converted into active oxygen that sterilizes by catalysis by metal ions, and exhibits antibacterial properties by the sterilization mechanism by active oxygen.

Therefore, metal ions are included in the eco-friendly composition to prevent the spread of pathogenic infectious bacteria including mold, prevent the inhabitation of various fungi, and block the generation of harmful toxins.

Metal ions may be included in the environment-friendly composition in a solution state dissolved in distilled water or an organic solvent.

That is, the eco-friendly composition includes a metal ion solution, and the metal ion solution may have a metal ion concentration of 10 to 2000 ppm (weight/weight), preferably 100 to 800 ppm.

When the concentration of metal ions satisfies 10 to 2000 ppm, the eco-friendly composition can exhibit more excellent antibacterial properties.

The metal ion may include at least one of Ag ²⁺ , Cu ²⁺ , Zn ²⁺ , Ca ²⁺ , Ni ²⁺ , Fe ²⁺ and Fe ³⁺ .

The eco-friendly composition of the present invention contains 10 to 30 parts by weight of the aluminum silicate, acrylamide, the second polymer resin, titanium dioxide, kaolin and metal ions, based on 100 parts by weight of the first polymer resin, at least one base of cement and asphalt concrete. may include

The eco-friendly composition contains 10 to 30 parts by weight of aluminum silicate, acrylamide, second polymer resin, titanium dioxide, kaolin, and metal ions in a total content of 10 to 30 parts by weight, thereby primarily exhibiting an excellent effect of air purification and antibacterial properties, and secondarily It shows the effect of reducing the calorific value and at the same time removing and decomposing air pollutants.

In addition, the eco-friendly composition exhibits excellent abrasion resistance and heat insulation, and exhibits an effect of preventing slipping.

Specifically, 5 to 30 parts by weight of the aluminum silicate, 1 to 10 parts by weight of acrylamide, 0.1 to 1 parts by weight of the second polymer resin, 5 to 30 parts by weight of titanium dioxide, 0.1 to 10 parts by weight of kaolin, 0.1 to 10 parts by weight of metal ions may include wealth.

More specifically, 10 to 25 parts by weight of the aluminum silicate, 1.5 to 5 parts by weight of acrylamide, 0.3 to 0.8 parts by weight of the second polymer resin, 10 to 25 parts by weight of titanium dioxide, 1 to 5 parts by weight of kaolin, 1 to 5 parts by weight of metal ions It may contain parts by weight.

When the content of aluminum silicate is out of 5 to 30 parts by weight, the physical properties of the material itself may be modified, and low heat generation may not be obtained.

When the content of acrylamide is out of 1 to 10 parts by weight, the physical properties of the material itself may be deformed, and cracks may occur.

When the content of the second polymer resin is out of 0.1 to 1 part by weight, the physical properties of the material may be modified, and durability or weather resistance may be deteriorated.

If the content of titanium dioxide is out of 5 to 30 parts by weight, the physical properties of the material itself may be modified, and low heat generation or air pollution decomposition properties cannot be obtained.

When the content of kaolin is out of 0.1 to 10 parts by weight, it is difficult to exhibit air purification function and antibacterial properties. In addition, when the content of metal ions is out of 0.1 to 10 parts by weight, it is difficult to exhibit air purifying function and antibacterial properties as well.

The eco-friendly composition of the present invention can be prepared by mixing and stirring each component at 25 ± 30 ℃.

As described above, specific examples of the eco-friendly composition having excellent air purifying function and antibacterial properties are as follows.

1. Manufacture of eco-friendly composition

Example 1

Based on 100 parts by weight of the methyl methacrylate resin as the first polymer resin, 10 parts by weight of aluminum silicate having an average size of 40 μm, 1 part by weight of acrylamide having a concentration of 80% (weight/weight), and silicone as the second polymer resin 0.1 parts by weight of resin, 5 parts by weight of titanium dioxide (anatase) having an average size of 50 µm, 0.1 parts by weight of kaolin having an average particle size of 20 µm, and metal ions (Ag ²⁺ , Cu ²⁺ , Zn ² ) having a concentration of 700 ppm 1 After mixing parts by weight, the composition was prepared by stirring.

Using an air gun, the prepared composition was evenly sprayed twice on an asphalt concrete plate of 100 × 200 × 2 mm and dried for 48 hours to prepare a sample.

Example 2

A composition was prepared under the same conditions as in Example 1, except that 14 parts by weight of aluminum silicate, 2 parts by weight of acrylamide, 1 part by weight of silicone resin, 10 parts by weight of titanium dioxide, 1.5 parts by weight of kaolin, and 1.5 parts by weight of metal ions were used. .

Example 3

A composition was prepared under the same conditions as in Example 1, except that kaolin having an average particle diameter of 10 μm and metal ions having a concentration of 400 ppm (Ag ²⁺ , Cu ²⁺ , Zn ^{2 ) were mixed.}

Example 4

A composition was prepared under the same conditions as in Example 1, except that a surface treatment layer containing metal ions (Ag ²⁺ , Cu ²⁺ , Zn ^{2 ) was formed to a thickness of 5 nm on aluminum silicate.}

Example 5

3 parts by weight of silicon nanofibers (diameter 5 nm) in a silicon resin as a second polymer resin as a point, and a second polymer resin as a surface treatment layer containing metal ions (Ag ²⁺ , Cu ²⁺ , Zn ^{2 ) on aluminum silicate is formed to a thickness of 5 nm} A composition was prepared under the same conditions as in Example 1, except that the composition was included.

Comparative Example 1

A composition was prepared under the same conditions as in Example 1, except that 13 parts by weight of kaolin and 11 parts by weight of metal ions (Ag ²⁺ , Cu ²⁺ , Zn ^{2 ) were mixed.}

Comparative Example 2

A composition was prepared under the same conditions as in Example 1, except that kaolin having an average particle diameter of 32 μm and metal ions having a concentration of 2100 ppm (Ag ²⁺ , Cu ²⁺ , Zn ^{2 ) were mixed.}

2. Methods for evaluating physical properties and their results

1) Antimicrobial evaluation (E. coli, Staphylococcus aureus)

E. coli (Escherichia coil ATCC 25922) and Staphylococcus (Staphylococcus aureus ATCC 6538) were cultured for 16 to 20 hours in a general incubator at 35 ° C. The culture solution was diluted 20,000 times with sterile phosphate buffer, and then 1 ml was added dropwise to the resin-treated specimen 25 Store at ℃ for 24 hours and then take it out.

After that, it is cultured again on sterilized agar medium for 48 hours, and the number of viable cells is measured by irradiating it with the stone plate culture method (35°C, culture for 2 days).

Thereafter, the sterilization rate (%) was calculated according to Equation 1 below.

99.9% or more ◎, less than 99.9% to 99% or more ○, less than 99% to 80% or more △, and less than 80% □.

[Equation 1]

Sterilization rate (%) = [(Number of viable cells in the diluted solution - the number of viable cells after storage for 24 hours)/Number of viable cells in the diluted solution] X 100

[Table 1]

2) Air purification performance

The air purification performance was evaluated based on the deodorization performance, and for this purpose, the ammonia removal rate was tested. Specifically, the composition according to the Examples and Comparative Examples was applied to a stainless steel plate (100 mm X 100 mm), placed in a container, and ammonia gas was injected, and then the ammonia removal rate was measured after 2 hours using a gas detection tube (test Specification: KFIA-FI-1004), and the ammonia removal rate (%) is shown in the table below.

[Table 2]

3) Measurement of calorific value

of the prepared composition sample In order to measure the calorific value, an infrared lamp having a temperature of 140° C. of the light source was installed at an interval of 20 cm from the sample, and then the temperature change of the sample was measured with an infrared thermometer at intervals of 5 minutes for 1 hour.

[Table 3]

4) Air pollutant decomposition performance test

After it was applied to the floor in a size of 10m ² and completely dried, the concentration of CO in the area was measured for 5 hours every 10 minutes, and the average concentration (ppm(v/v)) was calculated for 5 hours.

[Table 4]

As described above, the present invention has been described with reference to the illustrated embodiments, but the present invention is not limited by the embodiments disclosed herein, and various modifications can be made by those skilled in the art within the scope of the technical spirit of the present invention. It is obvious that this can be done. In addition, although the effects according to the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

Claims (6)

Based on 100 parts by weight of the base of at least one of the first polymer resin, cement and asphalt,
10 to 25 parts by weight of aluminum silicate including a surface treatment layer;
1 to 10 parts by weight of acrylamide;
0.1 to 1 part by weight of the second polymer resin;
5 to 30 parts by weight of titanium dioxide;
0.1 to 1.5 parts by weight of kaolin; and
Including; 1 to 1.5 parts by weight of metal ions having a concentration of 100 to 800 ppm;
The surface treatment layer contains metal ions and has a thickness of 0.1 to 10 nm,
The second polymer resin includes a silicone-based resin, and further includes 3 to 8 parts by weight of silicon nanofibers based on 100 parts by weight of the silicone-based resin, and the diameter of the silicon nanofibers is 5 to 100 nm,
The particle size of the kaolin is 10 ~ 20㎛ eco-friendly composition.
According to claim 1,
The first polymer resin includes at least one of an acrylic resin, a polyolefin-based resin, a polyvinyl chloride-based resin, a polyester-based resin, an aromatic vinyl-based resin, a polyurea resin, a urethane resin, a phenolic resin, a urea resin, and a melamine resin eco-friendly composition.
delete delete According to claim 1,
The metal ions are Ag ²⁺ , Cu ²⁺ , Zn ²⁺ , Ca ²⁺ , Ni ²⁺ , Fe ²⁺ and Fe ³⁺ Eco-friendly composition comprising at least one of 3+ .
According to claim 1,
The titanium dioxide is an anatase phase eco-friendly composition.