KR20190065493A - Yellow soil antibacterial board composition and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an antibacterial yellow soil board composition comprising 0.9-1.8 kg of a marjoram extract obtained by first distillation of marjoram at 105°C and 1 atm of water vapor for 30 minutes to 4 hours and second distillation of the firstly distilled marjoram at 140°C and 2 atm of water vapor for 30 minutes to 4 hours; 0.9 to 4.5 kg of polypropylene fibers coated with 0.09 to 0.18 kg of an isothiazolin-carbamate based organic antimicrobial agent; 90 kg of yellow soil; and 4.5 kg of wheat flour. The present invention also relates to a method for manufacturing the same.

Description

Technical Field [0001] The present invention relates to a yellow soil antibacterial board composition and a yellow soil antibacterial board composition,

The present invention relates to an indoor pollutant-reduced yellow algae antimicrobial board composition and a method for manufacturing an algae antimicrobial board, which are developed as a high-value-added high-functionality board product imparting antibacterial and antifungal performance to eco-friendly green loam products using only pure natural materials.

The World Health Organization (WHO) surveyed 6 million people who died of air pollution worldwide in 2000 and estimated that about 2.8 million people died from indoor pollutants. In particular, Warned that the probability of being delivered to a human lung is about 1,000 times higher. Therefore, there is a growing interest in the effects of architectural finishing materials such as sick house syndrome on indoor living environment in Korea.

Since January 2005, the Ministry of Environment has enacted the 'Indoor Air Quality Control Act for Multiple Use Facilities' and has been managing the indoor air quality of underground history, terminals, libraries, museums, medical facilities and apartment buildings since January 2005. Therefore, regulations for fine dust, radon, ozone, formaldehyde and volatile organic compounds have been established (see Table 1), and studies have been actively conducted to produce architectural finishing materials as eco-friendly products by conducting environmental certification for various building materials.

Recently, LH Corporation and the dermatology team of Bundang Seoul National University Hospital reported the results of clinical trials that the environment-friendly building materials are actually effective in improving the symptoms of atopic dermatitis through a joint research on "the effect of improving environment-friendly building materials on atopic dermatitis symptoms" Accordingly, the domestic market for eco-friendly finishing materials has attracted much attention.

According to Global Information's 2016 Eco-friendly Building Materials and Construction Market report, the globally green market is estimated at about $ 70 billion, growing to $ 150 billion by 2019 and about $ 294 billion by 2021 . In addition, the domestic eco-friendly market is worth 26.8 trillion won (as of 2016), with the eco-friendly construction materials market accounting for about 11% and the number of related companies from 1600 to 2500, Respectively. (Korea Environment Industry & Technology Institute (KEITI) 2014 Report)

However, interest and research on biological pollutants such as bacteria and fungus are relatively small compared to research and interest in chemical contaminants such as volatile organic compounds in building materials.

Some fungi, especially fungi, are known to release mycotoxin, a toxic substance that is dangerous to humans. More than 60 kinds of fungi are reported to produce allergic rhinitis and asthma-causing antigens. .

Especially, the elderly who have weak immunity can cause serious illness if they are continuously exposed to this environment. In addition, fungal contamination on the surface of building materials greatly reduces the function and efficiency of the material, thereby reducing energy efficiency, promoting corrosion and aging of the material itself, and significantly deteriorating the living environment Which ultimately shortens the durability life of the building.

Recently, due to the lack of parking lot and the lack of parking space, the underground space within the buildings in the urban areas and the dense areas of the buildings is getting wider and larger, and it is expected that the development of large - scale underground spaces will be increased in order to increase the efficiency of the urban land, On the other hand, the indoor living environment in the closed underground space becomes worse and the possibility of contamination of microorganisms (fungi, bacteria, etc.) is increased, posing a serious threat to the health of the residents.

Therefore, development and application of environment friendly antimicrobial building materials for improving indoor environment and air quality are highly demanded from the living behavior of modern people who spend more than 80% of the day in indoor space.

Indoor air quality recommendation standards and maintenance standards for multi-use facilities and new apartment buildings Multi-use facility Pollutant item Total volatile organic compounds
(TVOC) Nitrogen dioxide
(NO ₂ ) radon
(Rn) ozone
(O ₃ ) asbestos
(Asbestos) / / ㎥ ppm pCi / L ppm Dogs / cc Recommendation criteria 400-1,000 or less 0.05-0.3 or less 4.0 or less 0.06-0.08 or less 0.01 or less Pollutant item Formaldehyde
(HCHO) fine dust
(PM10) carbon dioxide
(CO ₂ ) carbon monoxide
(CO) Total floating bacteria / / ㎥ / / ㎥ ppm ppm CFU / m3 Recommendation criteria 120 or less Less than 100-200 1,000 or less Less than 10-25 800 or less New apartment house Pollutant item Formaldehyde
(HCHO) benzene
(Benzene) toluene
(Toluene) Ethylbenzene
(Ethyl benzene) Styrene
(Styrene) Xylene
(Xylene) / / ㎥ Recommendation criteria 210 or less 30 or less 1,000 or less Less than 360 300 or less 700 or less

In Korea, building materials mixed with natural materials such as loess, charcoal and diatomaceous earth are being developed in Korea. However, scientific evidence for the improvement of the indoor air quality of these materials is still insufficient.

Recently, Lee Ji-young et al. (2006) studied the emission characteristics and reduction effects of volatile organic compounds and formaldehyde through small chamber and field measurements of diatomaceous earth wall coverings and loess clay materials. The effect of formaldehyde removal on charcoal mortar, charcoal bio - mortar, and water - based charcoal paint, which are building materials made by mixing charcoal, cement, sand, and sericite, which are known to be good in adsorption, as a porous material at a predetermined ratio, were studied. As a result, it was reported that the building material containing 5 ~ 25% of charcoal showed about 3-4 times higher adsorption performance than the sample without charcoal.

In addition, Song Ho-yeon et al. (2007) produced silver nano (5 ~ 10nm, purity 99.9%) with silver nitrate (AgNO3) as a raw material and found Pseudomonas aeruginosa ATCC 10145, Salmonella typhi ATCC 19430, Mycobacterium tuberculosis ATCC35835), and Jang, Gyu - gyu et al. (2007) prepared a silver - hydroxyapatite composite antimicrobial material by adsorbing silver nitrate (AgNO3) on hydroxyapatite using coprecipitation method. The antimicrobial activity of Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 25922 was studied.

Research and development of the function of absorption, damping and adsorption of functional building materials have been actively carried out, but the related products developed in Japan have been directly imported and are being sold and installed in Korea without a separate verification procedure for performance It is true.

On the other hand, due to changes in the times, the soil construction has attracted much attention, and modern utilization methods of soil, which is a representative eco-friendly material, are being studied. In other words, the development of a loam panel and a board in the form of a modularization to meet the shortening of the air and the dry method, which is a feature of modern architecture, are being developed.

However, due to the disadvantages of drying and shrinkage and cracking, the strength of soil (loess) itself is difficult to develop into panel and board form. Therefore, Are mainly developed and applied.

In addition, many eco-friendly loess-related materials applied to the construction site are developed and distributed by small-scale small businesses, so they are used indiscriminately without verifying the main performances (environment friendliness, deodorization performance, antibacterial performance, etc.) There is a need to establish quality standards and guidelines through systematic and academic research (industry-academia cooperation).

In particular, much research has been done on the physical and mechanical (structural) performances of loess products (block, brick, plaster, etc.), but there is no area of indoor air quality that directly affects the health of the residents. This study is very important for the prediction and evaluation of the performance in the future development and application of the loess materials.

Therefore, eco-friendly and high-functional products that can greatly reduce the rate of indoor pollutants and protect the health of the residents. The products are developed with original colors (aesthetic performance), modular specifications, dry methods and low unit prices. It is anticipated that it will have sufficient competitiveness in the domestic and overseas eco-friendly building materials market, which has been greatly expanding recently.

In Europe and the United States, biological pollutants (such as bacteria and fungi) that are floating in indoor air are recognized as very important indoor pollutants together with chemical pollutants (formaldehyde, VOCs, etc.) in building materials. It is an important study subject.

According to a study published in 2000 by the US Department of Energy 10, microbiological contamination with HCHO, TVOC, and CO ₂ appears to be the most common pollutant in school buildings, among which pollutants related to microbes are of particular interest .

In the United States, once the warm and humid Texas region has become so severe that the problem of fungus is evacuated to students, there is a special interest and research to identify correlations between asthma, bronchitis, allergic diseases, And many research results were reported.

In addition, the Georgian Institute of Technology has developed a stochastic performance evaluation index to analyze the risk of fungi in buildings. The National Institute for Research in Canada (NRC) Joint research on the establishment and commercialization of basic physical property DB of biological contamination is under way.

In Europe, much research has been done on the occurrence of fungi in buildings and environmental conditions of building materials (surface temperature, humidity, exposure time, etc.), and grading of building materials according to bio-degrade And provide practical help to related practitioners.

In Japan, much research has been carried out on antibacterial agents, especially inorganic antibacterial agents, and the development of antibacterial building materials using these has progressed actively and hundreds of patents have been registered.

With the revitalization of the eco-friendly building material market, about 1,332 patents related to the Hwangto board are currently registered. Most of them are mixed with a small amount of binders such as lime, cement, resin (emulsion) These are technologies that are manufactured by mixing and firing a variety of minerals such as elvan, germanium, silver, and charcoal.

(Ecocarat, MOISS, Sararra, Breath-board, etc.) and technologies that have absorption / desorption performance capable of properly controlling indoor humidity and adsorption / decomposition performance of harmful chemical substances It is registered as a patent, and various natural materials such as diatomaceous earth, volcanic sediments and natural zeolite have been used.

As interest in indoor air quality such as sick building syndrome has recently increased, interest in the influence of building materials on indoor living environment has been increasing, and modern people have more than 80% of the total living time in the indoor environment of artificial environment. If you can not get rid of it and it is stored in the room for a long time, you will be directly affected by the health of the occupant.

Recently, the Ministry of Environment has enacted the 'indoor air quality management law for multi-use facilities' and has been managing the indoor air quality of underground history, terminals, libraries, museums, medical facilities and apartment buildings since January 2005. As a result, regulations have been established for fine dust, radon, ozone, formaldehyde and volatile organic compounds, and studies are being actively carried out to produce architectural finishing materials as eco-friendly products by conducting eco-friendly certification for various building materials.

However, studies on chemical pollutants such as formaldehyde and volatile organic compounds in building materials have been conducted, but research on biological pollutants such as bacteria and fungi has been relatively limited.

Various eco-friendly architectural finishing materials have been developed and applied from recent times and environmental backgrounds. Among them, the demand for yellow clay materials such as loess boards has been greatly increased.

In the Korean Registered Patent Publication No. 1014182310000 (Apr. 23, 2014), natural loess is used as a main raw material, and water, rice straw and white sack sawdust are mixed with each other until the mixture is evenly mixed using a stirrer to form a mixture. Dried, and the water, seaweed adhesive, sodium silicate and salt were mixed with the above-mentioned primary-dried mixture, and the resulting mixture was subjected to secondary stirring using a stirrer. The mixture was then poured into molds by a predetermined amount, A second step of drying, a step of removing the molding frame, and a third drying step of drying at a high temperature.

In Korean Patent Laid-Open Publication No. 1020100122536 (Nov. 23, 2010), 100 parts by weight of a base solution in which potassium silicate or sodium silicate solution is used alone or in combination, 1 to 30 parts by weight of phase change materials (PCM) 2 to 40 parts by weight of loess, 1 to 40 parts by weight of an organic or inorganic flame retardant, 0.1 to 10 parts by weight of a thermoplastic resin, 0.1 to 3 parts by weight of an organic or inorganic antimicrobial agent and 1 to 20 parts by weight of an oil- And having a density of 1.2 to 1.8 g / cm < 3 > and a building material using the same,

Korean Patent Registration No. 1008461050000 (Jul. 2008) discloses that 100 parts by weight of a base solution in which potassium silicate or sodium silicate solution is used alone or in combination, 10 to 120 parts by weight of loess, 0.5 to 30 parts by weight of an organic or inorganic flame retardant 0.1 to 20 parts by weight of a thermosetting polymeric resin, 0.5 to 20 parts by weight of an organic or inorganic filler, and 0.1 to 20 parts by weight of a pigment, and having a viscosity of 200 to 5000 cps, It is open,

In Korean Patent Laid-Open Publication No. 1020080047225 (May 28, 2008), the characteristics of binding, nonflammable, far infrared ray, antimicrobial function, charcoal odor absorption function, polymer insulation, sound insulation and light weight A sound insulating board for well-being is disclosed in which a combination of an organic matter such as yellow soil, ceramic, organic polymer, charcoal, and straw is used,

Korean Patent Registration No. 1012664780000 (2013.05.15.) Discloses a method of using far-infrared radiation effect, odor deodorization effect and antimicrobial effect provided by using natural pozzolan minerals, loess, kaolin, wood powder, The charcoal board is open,

In Korean Patent Registration No. 1016393710000 (Jul. 2017.07), 40 to 60% by weight of loess powder, 10 to 20% by weight of clay powder and 20 to 50% by weight of wood chips are mixed, and water is added and kneaded A step of shaping the dough mixed with the loess powder, the clay powder, and the wood chip into a ball having a predetermined diameter, shading the shaved ball, and burning the shaved ball so that the wood chip on the ball surface is burned to form a cavity, A step of forming a loess pelletized ball having charcoal in a wood chip and a step of forming a pelletized green ball containing 30 to 50 wt% of green tea powder, 20 to 30 wt% of loess powder and 30 to 50 wt% of water, The green loess impregnated ball is immersed in the pores of the surface so that the green tea loess solution is impregnated on the surface of the loess loose ball, And 30 to 40% by weight of a thermoplastic resin, And a step of mixing and heating the mixture to a predetermined temperature to produce a synthetic wood board by extrusion molding, and a manufacturing method thereof,

Korean Patent Laid-Open Publication No. 1020160074445 (June 26, 2016) discloses a lightweight, excellent durability and processability by mixing yellow clay, pine bark, rice ginseng, Korean paper and seaweed grass. The effect of far infrared rays emitted from yellow clay, Green algae, and ocher flooring, which are made from nature-friendly natural materials that do not contain waste, such as yellowtail boards and ocher flooring, are publicly released. .

1. Registered Patent Registration No. 1014182310000 (Apr. 23, 2014) 2. Published Korean Patent Application Publication No. 1020100122536 (Nov. 23, 2010) 3. Korean Patent Registration No. 1008461050000 (2008.07.08.) 4. Domestic Published Patent Publication No. 1020080047225 (May 28, 2008) 5. Registered patent registration No. 1016393710000 (July 2016.07.07) 6. Korean Patent Laid-Open Publication No. 1020160074445 (June 26, 2018)

Conventional ocher boards and similar products are not truly eco-friendly products by incorporating lime or gypsum into the loess, or by incorporating rice straw into the loess for the purpose of crack control and toughness enhancement, Price), and there is a problem that it can not be actively used as interior finishing materials for architectural purposes.

The present invention relates to a method for reducing antioxidant and antifungal properties by using synthetic fibers instead of rice straw used for reducing cracks and toughness for reducing the unit price of yellow earth boards and improving the production process, It is a polypropylene fiber (antibacterial and antifungal performance, improvement of crack control and embrittlement, improvement of insulation performance, reduction of density, etc.) and a flour (natural adhesive) which are coated with extract of vegetable antibacterial substance and organic antibacterial agent in loess The present invention is a solution to the problem of the present invention to provide a room soil pollution reduction type yellow soil antimicrobial board composition and a method for producing a yellow soil antibacterial board in which a paper (easiness of forming a plate product) is attached to the back side after mixing and compression molding with a screw compressor.

The present invention is an eco-friendly product that uses only pure natural materials to minimize pollutant emissions. It has antimicrobial and antifungal properties corresponding to bacteria and fungi, which are indoor pollutants, and has been improved in crack reduction and toughness in order to reduce the unit cost and improve the production process And can be manufactured and constructed (dry method) with the same specifications as existing products (such as gypsum board). Therefore, it is possible to extend the entire market of building finishing materials from walls, ceilings, floors, The effect is expected to be great.

1 is a view showing a manufacturing process of the yellow soil antibacterial board of the present invention
Fig. 2: Antifungal performance test results of the yellow soil antibacterial board containing the natural antibacterial substance of the present invention
Containing natural antimicrobial material Yellow soil board (1A) Synthetic fiber coated with natural antimicrobial material Yellow soil antibacterial board (1B)
Figure 3 Mineralogical properties of loess
Figure 4 Particle survey of loess and cement
Yellow loess (4A), cement (4B)
Fig. 5 Distribution of characteristics of the pore size distribution of loess and cement
Figure 6 Surface porosity analysis photograph of the yellow soil antibacterial board
Fig. 7 Humidity control characteristic according to thickness of yellow soil antibacterial board
Fig. 8 Deodorization characteristic of ammonia gas according to the thickness of the yellow soil antibacterial board
Figure 9 VOC adsorption characteristics according to the thickness of the yellow soil antibacterial board

The present invention relates to a method for producing marjoram, which comprises primary distillation of marjoram at 105 DEG C and 1 atm of water vapor for 30 minutes to 4 hours; 0.9-1.8 kg of a marjoram extract obtained by first distilling the first distilled marjoram with a secondary distillation at 140 ° C and a steam of 2 atm for 30 minutes to 4 hours; 0. 9 to 4.5 kg of polypropylene fiber coated with 0.09 to 0.18 kg of an organic antimicrobial agent based on isothiazoline-cabamate series; 90 kg of loess; Flour 4.5kg; And a method for producing the same.

The present invention relates to polypropylene fibers (antimicrobial and antifungal performance, improvement of crack control and embrittlement, improvement of heat insulation performance, reduction of density and the like) and flour (Easy to form plate products) on the back side after mixing and compression molding with a screw compressor, and a method for manufacturing the ocher antimicrobial board.

More specifically,

The surface of 0.9 to 4.5 kg of polypropylene fiber (∮ 0.1 mm, L = 19 mm) was coated with a mixture of 0.9 to 1.8 kg of Marjoram extract and 0.09 to 0.18 kg of organic antimicrobial agent, and the coated polypropylene fiber 0.1 mm, L = 19 mm). 90 kg of loess and 4.5 kg of starch were mixed to prepare a yellowish antimicrobial board composition. The yellowish antimicrobial board composition was charged into a screw compressor, mixed and compression-molded, and then paper (easiness of plate product molding) And then transferred to a microwave and dried at 150 to 180 ° C for 1 hour.

In order to maximize humidity control capability, toxic gas deodorization performance, VOC adsorption performance, and antibacterial performance, it is necessary to determine the influence factors (composition and composition ratio of materials used, molding conditions, thickness and surface condition of the board, (Greenhouse effect), which is a high-functional eco-friendly ocher antimicrobial board that significantly improves the rate of reduction of indoor pollutants and imparts antibacterial and antifungal properties to existing products (boards).

In the present invention, 0.9 to 1.8 kg of Marjoram extract and 0.09 to 0.18 kg of organic antibacterial agent are coated and mixed with 0.9 to 4.5 kg of polypropylene fiber in a mixture of 90 kg of loess and 4.5 kg of wheat flour, and the above mixture is mixed and compressed by a screw compressor (150-180 占 폚) by applying a paper (easiness of forming a plate product) to the rear surface of the substrate and then microwaving it.

· Hwangto: Humidity control and indoor pollutant adsorption performance with eco-friendly material

· Wheat flour: It plays natural adhesive together with raw loess

· Marjoram Extract

: Antibacterial and antifungal performance

· Polypropylene fiber: Crack control and embrittlement improvement of Hwangto mortar

Marzam (Hyssopus officinalis L) is a herb that has been used as a spice and herb for 2,000 years. It is a perennial herbaceous plant with a large stem and a square cross section. It grows up to 1cm in the main stem. Marjoram is also called hyssop or hyssop, and it looks like a knee because it is thicker. Leaves are oval, hairy, 5 ~ 15cm long, and flowers are formed at the end of leaf and main stem from summer to autumn, and consist of 5 stamens and 1 pistil. The origin of marzam is known as France, Germany, the Netherlands, Hungary and Bulgaria. Historically, Israelites have also bundled marjoram and used it in rites to wash away leprosy. Hippocrates used marjoram to treat mesenteric inflammation.

The main ingredients of marjoram are known as sabinene, a-terpineol and terpinene as shown in Table 1 below. They are used for improvement of poor circulation, treatment of folliculitis, rheumatism, arthritis It is known that it is effective for relieving pain, viral infections, relieving the painful mind, eczema, relieving emotional pain, wound, dermatitis. The leaves of marjoram are not only a cooking flavor for fish with a lot of fat, meat, but also play a role in promoting digestion. In addition, leaves made of tea is used as a treatment for hysteria and rheumatism, and it is known to be good for diseases of the respiratory system such as bronchitis and cold because it has gout function and geodam function. Oils extracted from leaves, flowers, and stems are called fragrance, so they are used as fragrance, raw materials for Odekolon and oriental ingredients. Marjoram has long been used as a plant that contains many physiologically active substances with excellent perfumes. Marazoram is a natural ingredient used as an oral solution, and drinking three teaspoons a day 3-4 times a day is said to help encourage cheer up. In addition, nutritional deficiency skin, burns, abrasions, rhinitis, laryngeal infections are also effective.

The marjoram extract used in the present invention was prepared by steam distillation.

In the steam distillation method, when a plant material (marjoram) is put into a vessel and steam is passed through it, the oil is evaporated from the raw material, and when the water vapor mixed with the essential oil passes through the condenser (condenser and cooler), it is cooled to become a liquid. Thus, an extract of each raw material can be obtained. The steam distillation method is an economical herb extraction method capable of extracting a large amount of essential oil in a short period of time. Since it extracts the essential oil component with steam, it has little toxicity and can express the herb of the raw material as it is.

In a steam distillation method for separating essential oil from marjoram, the step of primary distillation of marjoram at 105 DEG C and 1 atm of water vapor for 30 minutes to 4 hours; And then subjecting the first distilled marjoram to secondary distillation at 140 ° C and a steam of 2 atm for 30 minutes to 4 hours.

In other words, marjoram extract is prepared by steam distillation method, and its extract is composed of marjoram extract and essential oil, among which 40 ~ 50 wt.% Essential oil is contained.

Organic antimicrobial agents are isothiazoline-cabamate type, and are mainly used in the field of architectural paints (paint) for antimicrobial or sterilizing purposes, as shown in Table 1 below, with isothiazoline and carbamate components being main components . In the present invention, it was found that the optimum amount of the organic antimicrobial agent tested in the experiment was about 0.1 to 0.2% by weight of the used loess.

 Composition and Properties of Marjoram and Organic Antimicrobial Agents Type Components Appearance Efficacy Application fields Marjoram extract
(Marjoram extract) Sabinene,
a-terpineol, terpinene Extract
(liquid state) Antivirus, sterilization Fiber, food & phamacon industry Organic antimicrobial agent Isothiazoline-cabamate beyaz aqueous solution Antibacterial & antifungal Painting & interior finishing materials

Hereinafter, the present invention will be described in detail with reference to examples.

Example 1

Primary distillation of marjoram at 105 DEG C and 1 atm of water vapor for 30 minutes to 4 hours; 0.9 liters of a marjoram extract for secondary distillation at 140 占 폚 and 2 atmospheric steam for 30 minutes to 4 hours, and 0.09 kg of an isothiazoline-cabamate-based organic antimicrobial agent , 0.9 kg of polypropylene fiber (∮ 0.1 mm, L = 19 mm) was coated on the surface, and then 90 kg of loess and 4.5 kg of starch were mixed with 0.9 kg of coated polypropylene fiber (∮ 0.1 mm, L = 19 mm) After the mixture was compressed and formed into a screw compressor, the paper was attached to the back surface of the paper (ease of forming a sheet product), transferred by microwave, and dried at 150 to 180 ° C for 1 hour to produce an ocher antimicrobial board.

Example 2

Primary distillation of marjoram at 105 DEG C and 1 atm of water vapor for 30 minutes to 4 hours; The first distilled marjoram was mixed with 1.8 kg of a marjoram extract which had been subjected to secondary distillation at 140 ° C and a steam of 2 atm for 30 minutes to 4 hours and 0.18 kg of an organic antibacterial agent of the isothiazoline-cabamate series , 4.5 kg of a polypropylene fiber (∮ 0.1 mm, L = 19 mm) was coated,

After 4.5 kg of polypropylene fiber (∮ 0.1 mm, L = 19 mm) was mixed with 90 kg of loess and 4.5 kg of starch, the mixture was compressed and screwed into a screw compressor, and then paper (easiness of molding of plate products) Transferred to a microwave, and dried at 150 to 180 ° C for 1 hour to prepare an ocher antimicrobial board.

The present invention has been studied for a long time for natural antimicrobial and antifungal substances, and as shown in FIG. 2, natural antimicrobial materials are coated on yellow or synthetic fibers to confirm the antifungal performance of yellow mud mortar mixed with yellow mud.

Therefore, FIG. 2 is a photograph of the antifungal performance test of the yellow soil antibacterial board containing the natural antimicrobial material after 6 months (24 weeks) of the fungus resistance test (ASTM G-21)

FIG. 2A shows a yellow soil antibacterial board incorporating a natural antimicrobial material. FIG. 2B shows a yellow antibacterial board mixed with a synthetic fiber coated with a natural antimicrobial material.

Experimental Example 1 (Investigation of compositional components, particle shape and pore characteristics of loess)

X-ray fluorescence (XRF) analysis, X-ray diffraction (XRD) analysis, electron microscope (SEM) observation and BET method were used to analyze the chemical composition and mineralogical characteristics, particle shape, And the results are shown in Table 2, FIG. 3, FIG. 4, Table 3 and FIG. 5, respectively.

As shown in Table 2, the major components of the loess were 60.27% SiO ₂ , 21.07% Al ₂ O, and 6.27% Fe ₂ O _3. SiO ₂ has a large porosity and SiO ₂ and Al ₂ O have a large amount of far- And Fe ₂ O ₃ determines the color of the loess.

As can be seen from the XRD analysis in FIG. 3, peaks of SiO ₂ can be confirmed in a large amount, and kaolinite and halloysite, which are homogeneous abnormalities of the kaolin group, were confirmed.

As shown in Fig. 4, yellow clay has rounded particles as compared with a cementitious plate-like cement, and thus it has been reported that bonding strength and adhesion between particles are somewhat lowered.

As shown in Table 3, the specific surface area of loess is 35.2 m 2 / g, which is about 17 times higher than that of cement, and the porosity is 0.073 cm ³ / g, which is 20 times higher than that of cement.

 Analysis of chemical composition of loess and cement (unit: wt.%) division SiO ₂ Al ₂ O ₃ Fe ₂ O ₃ TiO ₂ MgO CaO K ₂ O MnO P ₂ O ₅ SO ₃ ocher 60.27 21.07 6.27 1.01 0.81 0.13 2.55 0.05 0.09 - cement 21.57 4.49 4.33 0.37 3.12 60.43 1.27 0.18 0.18 3.82

 Pore characteristics of loess and cement division Specific surface area
(m ² / g) Major pole
(cm < 3 > / g) Average pore size
(nm) ocher 35.20 0.073 8.32 cement 2.10 0.003 6.84

As shown in FIG. 5, the pore volume determining the amount of adsorption was much higher than that of cement. In particular, the meso-pore volume of 2 to 50 nm was large in the loess, It is a result showing well that it is a substance.

Experimental Example 2 (Surface pore analysis of yellow soil antibacterial board)

As shown in FIG. 6, a large amount of voids were observed on the surface of the yellow soil antibacterial board (FIG. 6A) compared with the cement mortar (FIG. 6B), and it was found that a honeycomb-shaped special structure was formed inside. This structure is known to have excellent air permeability and excellent characteristics for adsorbing contaminants.

Experimental Example 3 (Investigation of humidity control characteristics of yellow soil antibacterial board)

(Mo: cement mortar, Lo: 10 cm of yellow mud mortar, P11: 1 cm of yellow mud mortar, P12: 2 cm of yellow mud mortar, P13 : 3cm yellow mortar)

In particular, the 3cm yellow soil antibacterial board exhibited a hygroscopic behavior similar to that of 10cm yellow mortar. As the time elapsed, the increase of the moisture absorption was decreased, and the maximum moisture absorption time was 10 days. The maximum moisture absorption was 0.424 g / cm ² and 0.399 g / cm ² in 10 cm and 3 cm Hwangto mortar, respectively.

As the thickness of the yellow soil antimicrobial board increases, the humidity increase rate is higher. The moisture permeability of the 10cm and 3cm soil antimicrobial boards was about 1/2 of the moisture absorption rate and the moisture permeability was more than 7 times higher than that of the cement mortar.

Experimental Example 4 (Investigation of deodorizing characteristics of harmful gas (ammonia, VOC) of yellow soil antibacterial board)

8 is a graph showing the deodorization characteristics of ammonia gas according to the thickness of the yellow soil antibacterial board, wherein (Mo: cement mortar, Lo: 10 cm of ocher mortar, P11: 1 cm of ocher mortar, P12: 2 cm of ocher mortar, P13: mortar)

As shown in FIG. 8, the yellow soil antibacterial board shows an excellent amount of ammonia gas deodorization compared to cement mortar, and the amount of deodorization increased with time. Especially, the deodorization value of the yellow soil antibacterial board at 6 hours and 12 hours of exposure time was similar, and the deodorization effect of ammonia in the yellow mortar at the exposure time of 12 hours was found to be deodorizing most of the ammonia generated at 97%. There was no significant change according to the thickness of the yellow soil antimicrobial board. Even with 1 cm of the yellow soil antimicrobial board, the ammonia gas deodorization characteristic of about 3 times that of the cement mortar was exhibited.

9 is a graph showing the VOC adsorption characteristics according to the thickness of the yellow soil antibacterial board,

Mo: cement mortar of Fig. 9A, Lo: 10 cm of ocher mortar, P11: 1 cm of ocher mortar, P12: 2 cm of ocher mortar, P13: 3 cm of ocher mortar

9B, Mo-H: cement mortar + Hanji, Lo-H: 10 cm of ocher mortar + paper, P11 + H: 1 cm of ocher mortar + paper, P12 + H: 2 cm of ocher mortar + paper, P13 + H: Of Hwangto Mortar + Hanji,

As shown in FIG. 9A, the VOC adsorption characteristics of the yellow soil antibacterial board were not changed by the thickness, and all the adsorption amounts were similar to those of the cement mortar. However, as shown in FIG. 9B, the amount of VOC adsorption was higher than that of the case where the ceiling was applied to the yellow soil antibacterial board and the case where the yellowish antibacterial boards and the cement mortar were not finished with Hanji, There was no significant difference. That is, the ammonia gas adsorption rate of the yellow soil antibacterial board was higher than 90%, but the adsorption rate of toluene in VOC was as low as about 40%. This is attributed to the adsorption characteristics due to the molecular weight difference between ammonia (17.03) and toluene (92.14), and toluene having a relatively high molecular weight is blocked by blocking the pores in the antimicrobial board during the adsorption process.

Experimental Example 5 (Investigation of Antifungal Performance of Marjoram and Phytoncide as Plant Extracts)

As shown in Table 4, marjoram inhibited the germination and growth of all fungi, showing excellent antifungal performance.

Phytoncide was found to be generally resistant to fungi, but not to fungi (Gliocladium virens).

The antifungal performance of chitosan (oligosaccharide, polymer), wormwood (extract), time (hydrosol, extract) increases with increasing the mixing ratio (especially 5% or more) And phytoncide was significantly lower than that of phytoncide.

Therefore, we would like to conduct experiments on the yellow soil antibacterial board only for marjoram and phytoncide.

The results of self-antifungal performance according to the type and the amount of the plant extracts (results after 4 weeks of fungal test) Type and amount of antimicrobial agent Type of fungus Chaetomium globosum Aspergillus niger Aureobasidium pullulans Gliocladium virens Penicillium pinophilum Chitosan
(oligosaccharide) One% 4 ^* 4 4 4 4 2% 4 4 4 4 4 3% 4 4 4 4 4 5% 0 4 0 4 2 10% 0 4 0 4 2 Chitosan
(Polymer) One% 4 4 4 4 4 2% 4 4 4 4 3 3% 4 4 4 4 One 5% One 4 One 4 One 10% One 4 One 4 0 Mugwort
(Extract) One% 4 4 4 4 4 2% 4 4 4 4 4 3% 4 4 2 4 3 5% 2 4 2 4 One 10% One 4 0 4 One Marjoram
(Extract) One% 0 0 0 0 0 2% 0 0 0 0 0 3% 0 0 0 0 0 time
(Hydrosol) One% 4 4 4 4 4 2% 4 4 4 4 4 3% 4 4 4 4 4 5% 0 3 0 4 2 10% 0 2 0 4 2 time
(Extract) One% 4 4 4 4 4 2% 4 4 4 4 4 3% 4 4 4 4 3 5% 0 3 0 4 3 10% 0 3 0 4 One Phytoncide
(Extract) One% 0 0 4 4 2 2% 0 0 2 4 0 3% 0 0 0 4 0

See Mold index

Claims (2)

In the yellow soil antimicrobial board composition, the step of primary distillation of marjoram at 105 DEG C and 1 atm of water vapor for 30 minutes to 4 hours; 0.9-1.8 kg of a marjoram extract obtained by first distilling the first distilled marjoram with a secondary distillation at 140 ° C and a steam of 2 atm for 30 minutes to 4 hours; 0.9 to 4.5 kg of polypropylene fibers coated with 0.09 to 0.18 kg of an organic antimicrobial agent of the isothiazoline-cabamate series; 90 kg of loess; Flour 4.5kg; The composition of the yellow soil antibacterial board In the composition of the yellow soil antibacterial board, the step of primary distillation of marjoram at 105 DEG C and 1 atm of water vapor for 30 minutes to 4 hours; 0.9-1.8 kg of a marjoram extract obtained by first distilling the first distilled marjoram with a secondary distillation at 140 ° C and a steam of 2 atm for 30 minutes to 4 hours; 0.09 to 0.18 kg of an organic antimicrobial agent of the isothiazoline-cabamate series was coated with a surface of 0. 9 to 4.5 kg of polypropylene fiber (∮ 0.1 mm, L = 19 mm) Polypropylene fiber (∮0.1mm, L = 19mm) 0. 90kg of loess and 4.5kg of starch are mixed in 9 ~ 4.5kg, then put into a screw compressor, mixed and compression molded, and then paper is attached to the backside and transferred by microwave and dried at 150 ~ 180 ℃ for 1 hour Wherein said method comprises the steps of:

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