JP2008088747A - Indoor building material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multifunctional indoor building material emitting negative ions and increasing antibacterial and deodorizing actions by using far infrared rays radiated at the same time and by a photocatalyst function material. <P>SOLUTION: This indoor building material is constituted by applying a resin composition to a part or the whole surface, by mixing the photocatalyst function material with a composition including any one of mineral including a high molecular compound and rare earth elements hardly electrified by static electricity and tourmaline or far infrared radiation ceramics in a woody material. Thus, the effect capable of increasing and improving the antibacterial and deodorizing action is performed by the photocatalyst function material, by using the far infrared radiation for emitting-increasing and radiating the negative ion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a building material for indoor use, and relates to a multifunctional building material for indoor use in which antibacterial and deodorizing actions are increased by using far infrared rays to be emitted and simultaneously adding and mixing a photocatalytic functional material.

  Architecture forms the human environment according to each application, and when designing, planning, and constructing architecture, careful consideration is required for its residential environment or performance. In particular, social awareness of so-called environmental problems is increasing in Japan, and planning technology for environmental functional aspects of architecture is closely related as a fundamental element that is indispensable for us to live a comfortable and healthy life. Have

  In recent years, interest in the air environment has increased, and it has become an era in which it is indispensable to eliminate odors and bacteria in the living space of human beings, especially in paints and adhesives for current chemical building materials, etc. In the field of interior building materials, the onset of sick house syndrome due to formaldehyde, which is a volatile organic compound or causative substance, has been regulated, for example, at a low concentration of VOC substances. In particular, in the residential environment closest to people's living, or in the facility environment such as workplaces and workplaces, the effects and increase of harmful substances contained in building materials, especially in urban areas such as residential buildings and offices Importance of clean atmosphere and control of and prevention of harmful substances, including social trends up to smoking aversion or limited smoking ban in transportation, along with the environmental cleanup in the building room as the density of the space increases. Is growing.

  As a method for removing malodor and obtaining an antibacterial effect, many products using a photocatalytic functional material and a product having a negative ion effect have come to be seen in the market. Compositions having both antibacterial and deodorant properties, and prior art photocatalytic functional materials are being patented, filed, or marketed. The following are four typical examples.

Patent No. 3035279 A resin composition that emits far-infrared rays at the same time as releasing negative ions containing a high-molecular compound that is not easily charged with static electricity, a rare element, and at least one of tourmaline or far-infrared ceramics. Patent No. 3494407 A coating member formed by coating a mineral containing rare elements and a coating material that emits negative ions containing at least one of tourmaline or far-infrared ceramic as an extender pigment. An anion generating powder composition is contained in an architectural sand wall coating material comprising an acrylic resin emulsion, a flame retardant imparting material, an inorganic filler, and water. This is a sand wall-like coating material for building construction, and the negative ion generating powder composition to be contained is a mixture of tourmaline powder and zirconium compound powder excluding fusing stabilized zirconium oxide or fusing stabilized zirconium oxide powder. A certain negative ion generating sand wall coating material for construction. When titanium oxide with a particle diameter of several to several hundreds of nanometers called photocatalyst is exposed to ultraviolet rays such as sunlight, electrons are excited by the photoelectric effect. Electrons and holes are generated. Electrons reduce oxygen in the air to superoxide ions, and holes oxidize surface moisture to hydroxyl radicals. This superoxide and hydroxyl radical show strong oxidizing power, and when organic matter adheres to the surface of titania in this state, superoxide decomposes by desorbing organic carbon and hydroxyl radical taking hydrogen. Such a self-cleaning action is a mechanism that becomes an antibacterial action and a deodorizing action.

  The problem to be solved is that the antibacterial effect and the deodorizing effect are mainly aimed, the multifunctional building materials for indoor use and the photocatalyst have a moderate antibacterial performance in the antibacterial effect, while the deodorizing effect Then, deodorizing ability is obtained at a low concentration, but deodorizing performance is difficult to obtain at a high concentration. As recent background on sterilization, nosocomial infections in hospitals, food poisoning in the food industry, and infectious diseases in the livestock industry have become social problems. If it is not level, it cannot be manufactured and used.

  In addition, titanium oxide as a photocatalyst has the following major problems. (1) There is no effect at night or in dark places where sunlight such as sunlight does not strike. (2) Since the reaction of the photocatalytic functional material is a surface reaction for both the deodorizing action and the antibacterial action, it has not been effective in a large volume of indoor space. (3) When mixed with or brought into contact with a resin, the organic resin is decomposed and deteriorated, so its use is limited. It has become necessary to solve the above-mentioned problems such as the antibacterial effect and the improvement in deodorizing performance and the above-mentioned major drawbacks of the photocatalyst.

  In view of the above problems, wood materials, soil materials, paper materials, cork materials, mortar materials, resin sheets, high molecular compounds that are not easily charged with static electricity, and minerals containing rare elements, and at least tourmaline or distant Provided is a building material for indoor use in which a resin composition obtained by mixing a composition containing either one of infrared ceramics with a photocatalytic functional material is applied partially or entirely.

  In the present invention, the resin composition can be applied to flooring materials, wall materials or wallpaper, ceiling materials, or spray materials as plate materials, wallpaper, tiles, adhesives, joint materials, and the like as indoor building materials. The application of the resin composition works to improve the deodorizing action and antibacterial action together with the negative ion effect and the far-infrared effect, and to further exert the antibacterial and deodorizing effects.

  In the present invention, acrylic resin emulsion, acrylic resin emulsion, acrylic / urethane copolymer emulsion, acrylic / vinyl acetate copolymer emulsion and vinyl acetate emulsion as vinyl acetate resin emulsion, vinyl acetate / vinyl chloride copolymer emulsion and urethane. As the resin emulsion, urethane resin emulsion, urethane / acrylic / vinyl acetate copolymer emulsion and silicon resin emulsion can use any of silicone resin emulsion, silicone / acrylic copolymer emulsion, silicone / urethane copolymer resin emulsion. It is possible to use a mixture of two or more of the above.

  In the present invention, the minerals containing rare elements include fergusonite, monazite, xenotime stone, columbite, betajolite, samarski stone, tantalum stone, uranium stone, thorium stone, rubber stone, gadolinite and the like. Among these minerals, monazite is most preferable as a mineral that emits extremely weak radiation and does not adversely affect the human body. As the particle size of the natural mineral, those pulverized to 1 mm or less can be used. Most preferably, those ground to 30 microns or less are beneficial in that they do not reduce the aesthetics of the surface of the building material and the production of negative ions. As said compounding part number, 100 weight part or less can be mix | blended with respect to 100 weight part of resin emulsion (solid content).

  In the present invention, any of anatase type titanium dioxide, brookite type titanium dioxide, apatite-coated titanium oxide and the like can be used as the photocatalytic functional material. As the particle diameter, those pulverized to 5 to 200 nm can be used. Most preferably, 6-30 nm is more beneficial for exciting electrons. A specific surface area of 50 square meters / g or more is also advantageous in promoting excitation of electrons. 2-50 weight part can be mix | blended as said mixing | blending part number. Most preferably, 30 parts by weight or less is advantageous in that it does not reduce the production of negative ions.

  In the present invention, as the far-infrared ceramic, silica-based and alumina-based ceramics and ceramics containing silica, alumina, iron oxide, magnesium oxide, sodium oxide, and magnesium oxide can be used. Most preferably, among the ceramics of the above components, use of a ceramic that emits far-infrared rays having a wavelength of 2 to 50 microns at a normal temperature and a temperature range of 50% emissivity increases amplification of negative ions. Is beneficial. Commercially available far-infrared ceramics containing the above-mentioned components are “trade name Serajit, manufactured by OK Trading, which is useful for amplifying negative ions and simultaneously emitting far-infrared rays. An average particle size of 30 microns or less is most useful for aesthetics of building materials and high radiation of far infrared rays.

In the present invention, as tourmaline, shoal tourmaline, lithium tourmaline, dramaticite tourmaline, rubellite tourmaline, pink tourmaline, indecolite, baraiba tourmaline, watermelon and the like can be used. As the particle size of the tourmaline, those crushed to 1 mm or less can be used. Most preferably, an average particle size of 30 microns or less is beneficial for the aesthetics of the building material and high radiation of far infrared rays. As said compounding part number, 100 weight part or less can be mix | blended with respect to 100 weight part of resin emulsion (solid content).

  According to the present invention, since the resin composition is applied to interior building materials such as indoor wooden materials, positive ions are greatly reduced even in the behavior of the number of ions in the room, and negative ions are particularly sustained. Produced in large quantities and at the same time amplifies and emits far-infrared rays, and amplifies and generates photocatalytic superoxide ions and hydroxyl radicals by the photocatalytic functional material mixed and added in the interaction, greatly improving antibacterial and deodorizing effects Therefore, it has excellent effects as a multifunctional indoor building material that can improve the indoor air environment including air purification and deodorizing action such as cigarettes that are close and familiar as the living environment of people.

  Hereinafter, examples of the present invention will be described in detail.

Preparation of sample As a compounding material shown in Table 1 and Table 2, as the acrylic resin emulsion, trade name V Free Sealer, manufactured by Toube Co., Ltd. was used. As the silicone resin emulsion, SE-1980 manufactured by Toray Dow Corning Silicon Co., Ltd. was used. As the far-infrared ceramic, trade name Serajit ALF9, manufactured by OK Trading Co., Ltd. was used.

  As the photocatalyst, a product name PC-101, titanium oxide having an average particle diameter of 20 microns manufactured by Titanium Industry was used. Apatite-coated titanium oxide having an average particle diameter of 20 nm was used. As a tourmaline, a shawl tourmaline having an average particle size of 10 microns was used.

表１に示す実施例１〜８の所定量を配合した混合物を、３Ｌ真空攪拌機ダルトンにて、１時間攪拌混合した実施例の時油脂組成物を得た。その実施例の樹脂組成物を、塩化ビニール製壁紙に、ローラー刷毛で、ｗｅｔ塗布量５０ｇ／ｍ² で均一に塗布し、乾燥させた実施例１〜８の建材を得た。

The oil-and-fat composition of the Example which mixed the mixture which mix | blended the predetermined quantity of Examples 1-8 shown in Table 1 with 3 L vacuum stirrer Dalton for 1 hour was obtained. The building materials of Examples 1 to 8 were obtained by uniformly applying the resin composition of the example to a vinyl chloride wallpaper with a roller brush at a wet coating amount of 50 g / m ² and drying.

イオン測定と遠赤外線測定
上記実施例１〜８の試料のイオン測定と遠赤外線測定を行った。イオン測定方法は、小イオン測定として、イオンテスターＫＳＴ−９００ 神戸電波製を使用し、室温２５℃、湿度６０％、試料２０ｃｍ角で、マイナスイオンとプラスイオンを３分間の平均生成数／ｃｃを測定した。総イオン測定は、空気イオンテスターＩＴＣ−２０１Ａ アンデス電気製を使用し、同じ雰囲気で、マイナスイオンとプラスイオンを３分間の平均生成数／ｃｃを測定した。遠赤外線測定は、ＦＴＩＲ測定機、ＪＩＲ−Ｅ５００を使用し、試料温度
３５℃の遠赤外線放射率を測定した。その結果を表３に示した。

Ion measurement and far infrared measurement Ion measurement and far infrared measurement of the samples of Examples 1 to 8 were performed. The ion measurement method uses an ion tester KST-900 manufactured by Kobe Denki as a small ion measurement. The average number of produced negative ions and positive ions / cc for 3 minutes at room temperature 25 ° C, humidity 60%, sample 20 cm square. It was measured. For the total ion measurement, an air ion tester ITC-201A manufactured by Andes Electric was used, and the average number of produced negative ions and positive ions per 3 minutes / cc was measured in the same atmosphere. The far-infrared measurement used the FTIR measuring machine and JIR-E500, and measured the far-infrared emissivity with a sample temperature of 35 degreeC. The results are shown in Table 3.

実施例１〜８の小イオン測定及び総イオン測定の結果、実施例１〜８の樹脂組成物に光触媒及びアパタイト被覆酸化チタン配合が、プラスイオンを大幅に減少させて、マイナスイオンを大量に生成させていた。遠赤外線の放射においても、いずれの実施例１〜８も高放射していた。

As a result of small ion measurement and total ion measurement of Examples 1-8, the photocatalyst and apatite-coated titanium oxide compounded in the resin compositions of Examples 1-8 significantly reduced positive ions and produced large amounts of negative ions. I was letting. Also in the far infrared radiation, any of Examples 1 to 8 was highly radiated.

Comparative example

  As sample preparation methods, the resin compositions of Comparative Examples 1 to 8 were prepared in the same manner as in Examples with the formulation shown in Tables 4 and 5. The resin composition was applied to a wallpaper made of vinyl chloride in the same manner as in the examples to prepare samples of Comparative Examples 1-8.

比較例のイオン測定と遠赤外線測定を、実施例と同じ方法で行った。その結果を表６に示した。

The ion measurement and far-infrared measurement of the comparative example were performed in the same manner as in the examples. The results are shown in Table 6.

実施例と比較例の小イオン測定結果及び総イオン測定結果から明らかなように、樹脂組成物に光触媒酸化チタンを加えることで、プラスイオンが大幅に減少することになり、よりマイナスイオン効果を発揮できるものとなった。また、遠赤外線放射では、実施例１〜８及び比較例１，２，５，６は殆ど変らず高放射を維持していたが、比較例３，７，８は殆ど放射していないものであった。

As is clear from the small ion measurement results and the total ion measurement results of the examples and the comparative examples, the addition of photocatalytic titanium oxide to the resin composition significantly reduces the positive ions and exhibits a more negative ion effect. It became possible. Moreover, in far-infrared radiation, Examples 1 to 8 and Comparative Examples 1, 2, 5, and 6 remained almost unchanged, but Comparative Examples 3, 7, and 8 hardly emitted. there were.

Practical application test Using the samples prepared in Examples and Comparative Examples, an antibacterial test and a deodorization test are conducted to clarify the present invention.

Antibacterial test An antibacterial test was conducted at the Japan Spinning Association, a public testing organization. The antibacterial test method was based on the JIS-L1902 quantitative test method, and the environmental conditions were (1) black light illumination and (2) darkness without illumination. MRSA (resistant Staphylococcus aureus) was used as a test strain. The test results are shown below.

ｌｏｇＢ−ｌｏｇＡ＝２．７ 有効
殺菌活性値＝ｌｏｇＡ−ｌｏｇＣ
静菌活性値＝ｌｏｇＢ−ｌｏｇＣ Test results (1) During black light irradiation

logB-logA = 2.7 effective bactericidal activity value = logA-logC
Bacteriostatic activity value = log B-log C

試験結果 （２）光無し（暗闇）

Test results (2) No light (darkness)

上記の抗菌試験から明らかなように、実施例と比較例を対比すると、樹脂組成物よりも相当高い抗菌性を示し、殺菌レベルの性能を有するものとなった。また、光の無い環境でも、余り低下することなく抗菌性を維持していた。それに対し、光無しの環境では、比較例３，４の光触媒のみの試料では、全く効果がみられなかった。これらの効果は、樹脂組成物のマイナスイオン増幅をする電子と遠赤外線と、光触媒の相互作用が働き、抗菌効果を大幅に向上させたことは明らかである。

As is clear from the above antibacterial test, when the example and the comparative example were compared, the antibacterial property considerably higher than that of the resin composition was exhibited, and the sterilization level performance was obtained. Further, even in an environment without light, the antibacterial property was maintained without much deterioration. On the other hand, in the environment without light, the sample of Comparative Examples 3 and 4 only had no effect at all. It is clear that these effects greatly improved the antibacterial effect due to the interaction between the negative ion-amplifying electrons of the resin composition, far-infrared rays, and the photocatalyst.

Deodorization test The detector tube method was used as the deodorization test. As a test method, 5 cm squares of samples of Examples and Comparative Examples and gas were injected into a 5-liter tetra bag, and the gas concentrations after 30 minutes and 1 hour were measured using a detector tube. Deodorization rate (%) was converted. As environmental conditions, two methods were used: (1) black light irradiation and (2) dark without illumination.

Ammonia was used as the type of gas. The control is a blank with no sample. Ammonia gas initial concentration 200 ppm, gas amount 600 ml, deodorization rate% = {(control gas concentration−sample gas concentration) / control gas concentration} × 100
(1) At the time of black light irradiation As a result, the control gas concentration after 30 minutes 190 ppm
Control gas concentration 170ppm after 1 hour

（２）照明無し暗黒
その結果、３０分後のコントロールガス濃度 １９０ｐｐｍ
１時間後のコントロールガス濃度 １７０ｐｐｍ

(2) Darkness without illumination As a result, the control gas concentration after 30 minutes 190ppm
Control gas concentration 170ppm after 1 hour

上記の消臭結果から明らかなように、実施例及び比較例と対比して、高濃度のアンモニアガス濃度でも、実施例では、効率よく分解消臭したことが明らかとなった。また光無しの環境条件では、大差なく効率よく分解消臭したことが明らかとなった。比較例３，４，７，８の光触媒だけでは、全く消臭しなかった。

As is clear from the above deodorization results, it was revealed that, in contrast to the examples and comparative examples, even in the case of a high concentration of ammonia gas, the odor was efficiently eliminated in the examples. In addition, it became clear that the odor was eliminated efficiently under the environmental conditions without light. Only the photocatalysts of Comparative Examples 3, 4, 7, and 8 did not deodorize at all.

Claims (4)

Wood material, soil material, paper material, cork material, mortar material, resin sheet, high molecular compound that is not easily charged with static electricity, minerals containing rare elements, and at least one of tourmaline or far infrared ceramics A room characterized by increasing the antibacterial and deodorizing effects as well as emitting far-infrared rays as well as releasing negative ions when a resin composition obtained by adding and mixing a photocatalytic functional material to the composition is mixed. Building materials. The indoor building material according to claim 1, wherein the polymer compound is an acrylic resin emulsion, a vinyl acetate resin emulsion, a urethane resin emulsion, or a silicon resin emulsion. The indoor building material according to any one of claims 1 and 2, wherein the photocatalytic functional material is photocatalytic titanium oxide. The indoor building material according to claim 1, wherein the photocatalytic functional material is apatite-coated titanium dioxide.