JP2019094728A - Additive for interior material, lime plaster, aqueous adhesive and aqueous coating agent - Google Patents
Additive for interior material, lime plaster, aqueous adhesive and aqueous coating agent Download PDFInfo
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Abstract
Description
本発明は、内装材用添加剤及びそれを用いた漆喰、水性接着剤及び水性コーティング剤に関する。 The present invention relates to an additive for interior material and a stucco, an aqueous adhesive and an aqueous coating agent using the same.
これからの新築住宅政策の一環として、２０２０年には、各地域の省エネ基準の適合が義務化され、２０３０年には、新築住宅物の平均でネット・ゼロ・エネルギー・ハウスの実現を目指すとされている。そのために、住宅は、省エネ基準又はそれ以上に断熱性を向上させること、気密性を向上させること、省エネ設備機器を向上させること等が要求されている。 As a part of the new housing policy from now on, it will be obliged to meet the energy saving standard of each area in 2020, and in 2030, it will be aimed at realization of net zero energy house on average of new housing. ing. In order to do so, it is required that the house be improved in heat insulation to an energy saving standard or higher, improved in airtightness, improved in energy saving equipment and the like.
他方、住宅はシックハウス対策が重要である。シックハウス症候群の原因の一部は、建材や家具、 日用品などから発散するホルムアルデヒドやＶＯＣ（トルエン、キシレンその他）などの揮発性の有機化合物と考えられている。これらの有機化合物が住宅の合板・断熱材・ビニールクロス・塗装材・新建材等に使用されていて、断熱性能や気密性が良い省エネ住宅では、住宅の密閉度が高くなり勝ちであるため、シックハウス対策がこれまで以上に重要になる。 On the other hand, it is important for houses to take measures against sick houses. Some of the causes of sick house syndrome are thought to be volatile organic compounds such as formaldehyde and VOCs (toluene, xylene and others) emanating from building materials, furniture and daily necessities. These organic compounds are used in plywood, heat insulation, vinyl cloth, paint materials, new construction materials, etc. of a house, and in an energy saving house with good insulation performance and air tightness, the degree of sealing of the house tends to be high. Sick house countermeasures become more important than ever.
現在のシックハウス対策は、建築基準法により内装仕上げに使用する建材にホルムアルデヒドが制限され、かつ、２４時間換気システムなどにより、住宅の居室体積の空気を１時間で０．５回以上を機械換気設備で換気することが義務付けられ、かつ、天井裏等から居室へのホルムアルデヒドの流入を防ぐ措置が必要とされている。そして、上記の内装仕上げに使用する建材に関して、ＪＩＳ製品にＦ☆☆☆☆（フォースター）と表示される、ホルムアルデヒド濃度０．０８ｐｐｍ以下の材料を用いることが標準となっている。 In the current Sick House measures, formaldehyde is limited to building materials used for interior finishing according to the Building Standard Law, and a 24-hour ventilation system etc., air ventilating the living room volume 0.5 times or more in 1 hour. It is necessary to ventilate the area, and measures are required to prevent the influx of formaldehyde from the roof to the living room. And as for the building materials used for the above-mentioned interior finish, it is standard to use a material having a formaldehyde concentration of 0.08 ppm or less, which is displayed as F ☆ ☆ ☆ ☆ (Foster) in JIS products.
しかしながら、建築基準法では上記のホルムアルデヒド及びシロアリ駆除剤のクロルピリホス以外の化学物質は制限されていない。また、家具から揮発する有機化合物量が多い場合があり得る。特に新築からそれほど経過していない期間は。建材や家具から揮発する有機化合物量が多量である場合が考えられ、法律で定められた基準以上のシックハウス対策が望まれる。 However, the Building Standards Act does not limit chemical substances other than the above-mentioned formaldehyde and the termiticide chlorpyrifos. Also, there may be a large amount of organic compounds volatilized from the furniture. Especially when it has not been a long time since new construction. There are cases where the amount of organic compounds volatilizing from building materials and furniture is considered to be large, and it is desirable to take measures against sick houses that exceed the standards set by the law.
シックハウス対策の一つに、窓ガラスにコーティングする酸化チタン系の光触媒材があり、住宅内部ガラスにコーティングし、窓を通過する紫外線で触媒し、住宅内部の化学物質を分解するとされている。しかし、窓ガラスに限定されているので、部屋の隅々まで化学物質を十分に分解し難いことが考えられる。また、夜間や日光の照射角が低く紫外線量が少ない冬期間は機能低下が考えられるし、価格も安くはない。 One of the measures against the sick house is a titanium oxide-based photocatalytic material coated on window glass, which is coated on the interior glass of the house, catalyzed by UV light passing through the window, and decomposed chemicals in the house. However, since it is limited to window glass, it is considered that it is difficult to sufficiently decompose chemical substances in every corner of the room. In addition, the function may be considered to decrease at night or during winter when the irradiation angle of sunlight is low and the amount of ultraviolet rays is small, and the price is not cheap.
白金の主触媒とし、光触媒物質である二酸化チタンを補助触媒として、これらをバインダーと共に基体に塗布することで、有機化合物を分解し除去させる方法がある（特許文献１）。しかし、特許文献１に記載の方法は白金を主触媒としているので極めて高価である。 There is a method of decomposing and removing an organic compound by applying platinum as a main catalyst and titanium dioxide which is a photocatalytic substance as an auxiliary catalyst to a base together with a binder (Patent Document 1). However, the method described in Patent Document 1 is extremely expensive because it uses platinum as a main catalyst.
本発明は、上記の問題を有利に解決するものであり、シックハウス対策のために揮発性有機化合物を分解して低減することができる内装材用添加剤と、当該内装材用添加剤を用いた漆喰、水性接着剤及び水性コーティング剤を提供することを目的とする。 The present invention advantageously solves the above-mentioned problems, and an additive for an interior material capable of decomposing and reducing a volatile organic compound for preventing a sick house, and the additive for the interior material are used. It is intended to provide stucco, water-based adhesives and water-based coatings.
本発明者らは、シックハウス対策のために鋭意研究を重ねた結果、焦電体粉末及び圧電体粉末から選ばれる少なくとも一種と、金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種とを含むものを見出し、本発明に至った。 The inventors of the present invention have intensively studied to prevent the sick house and as a result, they contain at least one selected from pyroelectric powder and piezoelectric powder and at least one selected from metal complex, metal powder and metal ion. The present invention has been achieved.
上記知見に基づく本発明の内装材用添加剤は、焦電体粉末及び圧電体粉末から選ばれる少なくとも一種と、金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種とを、水に含むことを特徴とする。 The additive for an interior material of the present invention based on the above findings contains, in water, at least one selected from pyroelectric powder and piezoelectric powder, and at least one selected from metal complex, metal powder, and metal ion. It features.
本発明の漆喰、水性接着剤又は水性コーティング剤は、上記の内装材用添加剤を含むことを特徴とする。 The plaster, the aqueous adhesive or the aqueous coating agent of the present invention is characterized by containing the above-mentioned interior material additive.
本発明の内装材用添加剤によれば、居室の揮発性有機化合物を分解して低減することができ、ひいてはシックハウス対策に有利な効果を奏する。 ADVANTAGE OF THE INVENTION According to the additive for interior materials of this invention, the volatile organic compound of a room can be decomposed | disassembled and it reduces, and also it is effective in the sick house measures by extension.
以下、本発明の内装材用添加剤（以下、「添加剤」ということもある。）及びそれを用いた漆喰、水性接着剤、水性コーティング剤について、具体的に説明する。 Hereinafter, the additive for interior materials of the present invention (hereinafter sometimes referred to as "additive") and the plaster, the aqueous adhesive and the aqueous coating agent using the same will be specifically described.
［内装材用添加剤］
本発明の内装材用添加剤は、焦電体粉末及び圧電体粉末から選ばれる少なくとも一種と、金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種とを、水に含むものである。
[Additives for interior materials]
The additive for interior materials of the present invention contains, in water, at least one selected from pyroelectric powder and piezoelectric powder, and at least one selected from metal complex, metal powder and metal ion.
漆喰は、揮発性の有機化合物を吸着することができるとされ、無垢材は揮発性の有機化合物を含まず、また調湿効果があるとされている。そのため、現在のシックハウス対策住宅として、天然石の壁や漆喰、無垢材のフローリング等を多く用いた住宅や、自然素材で作る住宅がある。また、和紙や珪藻土や天然塗料を内装に用いて、和紙や珪藻土に吸着させることや、揮発性の有機化合物を含まない天然塗料によるシックハウス対策も考えられている。 Stucco is considered to be capable of adsorbing volatile organic compounds, and solid wood is considered to be free of volatile organic compounds and to have a humidity control effect. Therefore, there are houses using many natural stone walls, stucco, solid wood flooring, etc. and houses made from natural materials as current houses for measures against sickness. In addition, Japanese paper, diatomaceous earth and a natural paint are used for interior, and it is made to adsorb to Japanese paper and diatomaceous earth, and the sick house measures by natural paint which does not contain volatile organic compounds are also considered.
しかし、漆喰や和紙や珪藻土等の自然素材で内装を仕上げても吸着量には限度があるため吸着効果は永久的には続かず、また、吸着限度まで吸着させた揮発性の有機化合物が、漆喰から居室に放出されることも考えられる。 However, even if the interior is finished with natural materials such as stucco, Japanese paper and diatomaceous earth, the adsorption effect is not permanent because the adsorption amount is limited, and volatile organic compounds adsorbed up to the adsorption limit are It is also conceivable that it is released from the plaster into the living room.
また、酸化チタン等の光触媒材は、前述したように夜間や日光の照射角が低く紫外線量が少ない冬期間は機能低下が考えられる。 In addition, as described above, the photocatalyst material such as titanium oxide is considered to have a decrease in function at night or in the winter season when the irradiation angle of sunlight is low and the amount of ultraviolet rays is small.
そこで、本発明は、光触媒材が不要で揮発性の有機化合物を分解し得る新規な添加物として、焦電体粉末及び圧電体粉末から選ばれる少なくとも一種と、金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種とを含むものを、無光触媒として開発されたものである。本発明の添加剤は、例えば漆喰に添加したり漆喰の表面にコーティングしたり、壁紙の接着剤として用いたりすることにより、触媒効果を発揮してＶＯＣガスを分解し、水とＣＯ２に変えることができる。 Therefore, according to the present invention, at least one selected from pyroelectric powder and piezoelectric powder as a novel additive capable of decomposing a volatile organic compound which does not require a photocatalytic material, metal complex, metal powder and metal ion One containing at least one selected is developed as a non-photocatalyst. The additive of the present invention exerts a catalytic effect to decompose VOC gas and convert it to water and CO 2 by, for example, adding it to stucco, coating it on the surface of stucco, or using it as an adhesive for wallpaper. be able to.
本発明の内装材用添加剤の作用効果は、原理的、理論的には必ずしも解明できていないが、本発明者の推論では、以下の作用効果を有すると考えられる。添加剤中の焦電体粉末及び圧電体粉末から選ばれる少なくとも一種が、気密性の高い住宅に義務付けられた空気の循環エネルギー又は居室の温度変化により電荷を発生し、この電荷が、当該添加剤中に含まれる金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種に伝導して焦電体粉末又は圧電体粉末は正孔が形成されてプラスの電荷を帯び、この焦電体粉末又は圧電体粉末の正孔が周囲の水のＯＨ−イオンから電子を奪ってＯＨラジカルを発生させる。一方、金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種に伝導した電子は、空気中の酸素と反応してスーパーオキサイドを発生させる。これらのＯＨラジカル及びスーパーオキサイドの酸化力によりＶＯＣガスを分解することができると考えられる。 The action and effect of the interior material additive of the present invention can not be elucidated in principle and theoretically necessarily, but it is considered by the inventor's inference that it has the following action and effect. At least one selected from pyroelectric powder and piezoelectric powder in the additive generates a charge due to the change of the circulating energy of the air required for the highly airtight house or the temperature change of the living room, and this charge is the additive Conducting at least one selected from a metal complex, a metal powder and a metal ion contained therein, the pyroelectric powder or the piezoelectric powder forms holes and carries a positive charge, and the pyroelectric powder or the piezoelectric material The holes of the powder take electrons from the OH - ions of the surrounding water to generate OH radicals. On the other hand, electrons conducted to at least one selected from metal complexes, metal powders and metal ions react with oxygen in the air to generate superoxide. It is thought that the VOC gas can be decomposed by the oxidizing power of these OH radicals and super oxides.
本発明の効果は、後述するように本発明者らの実験により、本発明の内装材用添加剤を含む漆喰を内面に塗布した密閉容器内に、ホルムアルデヒドを導入して温度を上昇させたところ、ホルムアルデヒド濃度が減少するとともにＣＯ２濃度が増加したことから確認された。 The effect of the present invention is that the temperature is raised by introducing formaldehyde into the closed container coated with the plaster containing the additive for the interior material of the present invention on the inner surface by the experiments of the present inventors as described later. This was confirmed because the concentration of formaldehyde decreased and the concentration of CO 2 increased.
以下、本発明の内装材用添加剤の各成分について説明する。
（焦電体粉末及び圧電体粉末）
焦電体は、熱エネルギーを受けて電荷を発生させる物質であり、圧電体は、圧力を受けて電荷を発生させる物質である。焦電体は一般に圧電効果を有するので圧電体に包含される。したがって、本発明では焦電体と圧電体とを厳密に区別する必要はない。
Hereinafter, each component of the additive for interior materials of this invention is demonstrated.
(Pyroelectric powder and piezoelectric powder)
The pyroelectric material is a substance that receives thermal energy to generate an electric charge, and the piezoelectric body is a substance that receives pressure to generate an electric charge. The pyroelectric material is generally included in the piezoelectric body because it has a piezoelectric effect. Therefore, in the present invention, it is not necessary to strictly distinguish the pyroelectric material from the piezoelectric material.
焦電体や圧電体としては、チタン酸バリウムやチタン酸ジルコン酸鉛、ニオブ酸カリウム、チタン酸ビスマスナトリウム等を代表例として挙げることができるが、これらの材料に限られず、圧電性を有する材料であればよく、例えば、圧電性高分子材料粉末や金属粉末、炭化ケイ素粉末、シリコン粉末、電気石（トルマリン）、石英などであってもよい。また、これらの材料の二種以上を組み合わせて用いることもできる。 As a pyroelectric material or a piezoelectric material, barium titanate, lead zirconate titanate, potassium niobate, bismuth sodium titanate, etc. can be mentioned as a representative example, but the material is not limited to these materials, and a material having piezoelectricity For example, piezoelectric polymer material powder, metal powder, silicon carbide powder, silicon powder, tourmaline, quartz, etc. may be used. Moreover, it can also be used combining 2 or more types of these materials.
焦電体や圧電体は、本発明では粉末の形態で用いられる。微粉末にすることにより、水中での分散性がよくなる。粉末の平均粒径は、３μｍ程度以下とすることができる。平均粒径が３μｍ程度を超えると、それぞれの粉体の色が漆喰やコーティング剤に影響するので好ましくない。下限については特に限定しないが、微細にするほど製造コストが上昇するので、０．５μｍ程度以上とすることができる。後述する実施例では、平均粒径３μｍのものを用いた。 The pyroelectric material and the piezoelectric material are used in the form of powder in the present invention. A fine powder improves the dispersibility in water. The average particle size of the powder can be about 3 μm or less. When the average particle size exceeds about 3 μm, the color of each powder affects the plaster and the coating agent, which is not preferable. The lower limit is not particularly limited, but the manufacturing cost is increased as the size is reduced, and therefore, can be about 0.5 μm or more. In Examples to be described later, those having an average particle diameter of 3 μm were used.
本発明の添加剤において、焦電体粉末及び圧電体粉末の、水に対する配合量は、特に限定されない。焦電体粉末及び圧電体粉末が水中で十分に分散され、かつ本発明の添加剤を漆喰や接着剤やコーティング剤として使用したときに揮発性の有機化合物の分解効果を有する配合量とすることができる。 In the additive of the present invention, the blending amount of pyroelectric powder and piezoelectric powder to water is not particularly limited. The pyroelectric powder and the piezoelectric powder are sufficiently dispersed in water, and when the additive of the present invention is used as a plaster, an adhesive or a coating agent, it is a compounding amount having the decomposition effect of volatile organic compounds. Can.
（金属錯体、金属粉末及び金属イオン）
金属錯体、金属粉末及び金属イオンは、焦電体や圧電体から発生した電荷が伝達され、焦電体や圧電体に正孔を生じさせる。また、金属粉末は、焦電体や圧電体から受けた電荷が空気中の酸素と反応してスーパーオキサイドを発生させる。
(Metal complex, metal powder and metal ion)
The metal complex, the metal powder, and the metal ion transmit charges generated from the pyroelectric body or the piezoelectric body to generate holes in the pyroelectric body or the piezoelectric body. Further, in the metal powder, the charge received from the pyroelectric material or the piezoelectric material reacts with oxygen in the air to generate superoxide.
金属錯体、金属粉末及び金属イオンとしては、例えば銅錯体、銅粉末又は銅イオンが挙げられる。銅は導電性が良好であり、また抗菌作用がある。したがって、金属錯体、銅粉末又は銅イオンを本発明の添加剤に含むことにより、上述した正孔を生じさせる効果ばかりでなく、壁紙やビニールクロスの接着剤としての糊に、カビが発生するのを防止することができる効果を有する。したがって、本発明の内装材用添加剤を含む内装材を用いた住宅の居住者の健康増進に役立つ。さらに、金属錯体、銅粉末又は銅イオンは、白金等に比べて材料が安価である。なお、金属錯体、銅粉末及び銅イオンのうちの複数を本発明の添加剤に含むこともできる。金属錯体を含む水は、例えば酒石酸第二銅水が挙げられる。 Examples of the metal complex, metal powder and metal ion include copper complex, copper powder or copper ion. Copper has good conductivity and has an antibacterial action. Therefore, by including a metal complex, copper powder or copper ion in the additive of the present invention, mold is generated not only in the effect of generating the above-mentioned holes but also in the paste as an adhesive for wallpaper and vinyl cloth. Have the effect of being able to prevent Therefore, it contributes to the health promotion of the resident of the house using the interior material containing the additive for interior material of the present invention. Furthermore, metal complexes, copper powder or copper ions are cheaper in material than platinum and the like. A plurality of metal complexes, copper powder and copper ions can be included in the additive of the present invention. Examples of water containing a metal complex include cupric tartaric acid water.
本発明の添加剤において、金属錯体、金属粉末及び金属イオンの、水に対する配合量は、特に限定されない。上述した焦電体粉末及び圧電体粉末の量に応じて適宜定めることができる。 In the additive of the present invention, the blending amount of metal complex, metal powder and metal ion to water is not particularly limited. It can determine suitably according to the quantity of the pyroelectric powder and piezoelectric substance powder which were mentioned above.
（その他の成分）
本発明の添加剤は、上述した焦電体粉末及び圧電体粉末から選ばれる少なくとも一種並びに金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種以外の成分を含むことができる。例えば、圧電素子を水中に均一に保持するための保持剤又は分散剤を含むことができる。保持剤又は分散剤としては、例えばゼオライトや酸化ケイ素等を用いることができる。また、用途に応じて、バインダーや接着剤や等を本発明の添加剤に含むことができる。
(Other ingredients)
The additive of the present invention can contain at least one selected from the above-described pyroelectric powder and piezoelectric powder and components other than at least one selected from metal complexes, metal powders and metal ions. For example, a holding agent or dispersing agent can be included to hold the piezoelectric element uniformly in water. For example, zeolite or silicon oxide can be used as the holding agent or the dispersing agent. Moreover, according to a use, a binder, an adhesive agent, etc. can be included in the additive of this invention.
［製造方法］
本発明の添加剤は、水に、上述の各成分を含有させることで製造することができる。
[Production method]
The additive of the present invention can be produced by containing the above-described components in water.
［漆喰、水性接着剤、水性コーティング剤］
次に、本発明の内装材用添加剤の用途について説明する。本発明の添加剤は、例えば内装材の漆喰の表面や壁紙の表面に塗布される水性コーティング剤に加えることができる。また、漆喰壁の作製のときに漆喰原料に水と共に、又は水の代わりに加えられる添加剤とすることができる。さらに、例えば壁紙やビニールクロスを接着する接着剤に加えることができる。
[Stucco, water-based adhesive, water-based coating agent]
Next, applications of the interior material additive of the present invention will be described. The additive of the present invention can be added to, for example, an aqueous coating agent applied to the surface of plaster of interior material or the surface of wallpaper. Moreover, it can be used as an additive added to the stucco raw material together with water or in place of water when making the stucco wall. Furthermore, it can be added, for example, to an adhesive that bonds wallpaper or vinyl cloth.
本発明の添加剤が添加された漆喰や接着剤や水性コーティング剤は、本発明の添加剤の成分、特に電体粉末及び圧電体粉末から選ばれる少なくとも一種と、金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種とを含んでいる。 The stucco, the adhesive and the aqueous coating agent to which the additive of the present invention is added are a component of the additive of the present invention, particularly at least one selected from a collector powder and a piezoelectric powder, a metal complex, a metal powder and a metal ion And at least one selected from
かかる焦電体粉末及び圧電体粉末から選ばれる少なくとも一種と、金属錯体、金属粉末及び金属イオンから選ばれる少なくとも一種とを含むことにより、漆喰は、例えば内装の漆喰壁の表面から居室の揮発性の有機化合物を分解することができるし、漆喰が一旦吸収した揮発性の有機化合物を分解することができる。また、水性接着剤は、例えば通気性を有する壁紙やビニールクロスを通して居室の揮発性の有機化合物を分解することができ、また、特に本発明の添加剤が銅錯体、銅粉末又は銅イオンを含むときは、水性接着剤にカビが発生することを防止できる。更に、壁紙やビニールクロスの表面に塗布されたコーティング剤は、居室の揮発性の有機化合物を分解することができる。 By including at least one selected from the pyroelectric powder and the piezoelectric powder and at least one selected from the metal complex, the metal powder, and the metal ion, the plaster is, for example, volatile from the surface of the plaster wall of the interior to the living room. The organic compounds can be decomposed, and the volatile organic compounds that the stucco has absorbed once can be decomposed. Also, the aqueous adhesive can decompose volatile organic compounds in the room through, for example, breathable wallpaper or vinyl cloth, and in particular, the additive of the present invention contains a copper complex, copper powder or copper ion. When it is possible to prevent mold from occurring in the aqueous adhesive. Furthermore, the coating agent applied to the surface of wallpaper or vinyl cloth can decompose volatile organic compounds in the living room.
本発明の内装用添加剤が、漆喰、水性接着剤又は水性コーティング剤に添加されるときの配合量は、これらの用途に応じて適宜定めることができる。一例では、揮発性の有機化合物の分解効果を考慮すると、焦電体粉末及び圧電体粉末が壁紙や漆喰の表面に塗布されたときの１平方メートル当たり、およそ１ｇ〜３ｇとなるような配合量とすることができる。 The blending amount when the interior additive of the present invention is added to the plaster, the aqueous adhesive or the aqueous coating agent can be appropriately determined according to the use thereof. In one example, in consideration of the decomposition effect of the volatile organic compound, the compounding amount is approximately 1 g to 3 g per square meter when the pyroelectric powder and the piezoelectric powder are applied to the surface of wallpaper or plaster. can do.
酒石酸第二銅水（８００ｐｐｍ）１０００ｃｃに１００ｇのトルマリン粉末を含む内装材用添加剤を調製した。この内装材用添加剤の６３０ｃｍ３を、市販の既調合漆喰粉末５００ｇに加えて混錬し、漆喰塗料を得た。 An additive for interior material containing 100 g of tourmaline powder in 1000 cc of cupric tartaric acid (800 ppm) was prepared. 630 cm 3 of this interior material additive was added to 500 g of a commercially available ready-made stucco powder and kneaded to obtain a stucco paint.
この漆喰塗料を３０ｃｍ角の耐火ボードの６枚にそれぞれ２度塗りして乾燥させた。乾燥させた後の耐火ボードを、中空直方体の密閉容器の内面の６面にそれぞれ貼り付けて固定して供試体とした。 The plaster coating was applied twice to each of six 30 cm square fire resistant boards and dried. The fireproof boards after drying were respectively affixed and fixed to six surfaces of the inner surface of the hollow rectangular parallelepiped closed container to prepare a test body.
供試体内に蓋を開けたホルマリン容器を置き、供試体の密閉容器を密閉した。次いで加熱して供試体内の温度を４０℃にした。この４０℃の温度を維持したまま３時間ごとに供試体内のホルムアルデヒド濃度と二酸化炭素濃度を、北川式ガス検知器を用いて測定した。 The formalin container which opened the lid was put in the test body, and the airtight container of the test object was sealed. The sample was then heated to a temperature of 40 ° C. in the test body. The formaldehyde concentration and the carbon dioxide concentration in the test body were measured every three hours while maintaining the temperature of 40 ° C. using a Kitagawa-type gas detector.
その結果、ホルムアルデヒド濃度は、初期値が３０ｐｐｍ、３時間後が１０ｐｐｍ、６時間後が５ｐｐｍ、９時間後が微量であった。
また、二酸化炭素濃度は、初期値が１０００ｐｐｍ、３時間後が１４００ｐｐｍ、６時間後が１６００ｐｐｍ、９時間後が２０００ｐｐｍであった。
供試体の加熱を止め、１０日放置後のホルムアルデヒド濃度は０ｐｐｍ、二酸化炭素濃度は５００ｐｐｍであった。
As a result, the formaldehyde concentration was initially 30 ppm, 10 ppm after 3 hours, 5 ppm after 6 hours, and trace amount after 9 hours.
The carbon dioxide concentration was 1000 ppm at the initial value, 1400 ppm after 3 hours, 1600 ppm after 6 hours, and 2000 ppm after 9 hours.
The heating of the specimen was stopped, and the formaldehyde concentration after standing for 10 days was 0 ppm, and the carbon dioxide concentration was 500 ppm.
以上の結果から、ホルムアルデヒドの減少に伴って二酸化炭素濃度が増加することが判明した。これは、漆喰に吸収されたホルムアルデヒドを、内装材用添加剤が分解したためと考えられる。 From the above results, it has been found that the concentration of carbon dioxide increases with the decrease of formaldehyde. It is considered that this is because the interior material additive decomposed the formaldehyde absorbed in the stucco.
以上、本発明の内装材用添加剤を、その実施形態に基づいて説明したが、本発明の内装材用添加剤は、実施形態及び実施例に限定されず、本発明の趣旨を逸脱しない限り、幾多の変形をすることが可能である。
As mentioned above, although the additive for interior materials of the present invention was explained based on the embodiment, the additive for interior materials of the present invention is not limited to an embodiment and an example, unless it deviates from the meaning of the present invention It is possible to make many modifications.
Claims (4)
An aqueous coating composition comprising the interior additive according to claim 1.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2020000879A (en) * | 2017-12-13 | 2020-01-09 | 株式会社駒匠 | Air conditioning type indoor environment cleaning system |
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| JPS63221175A (en) * | 1987-03-10 | 1988-09-14 | Kanebo Ltd | Coating wall and spraying material having mildewproofing and antibacterial performance |
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| JP2020000879A (en) * | 2017-12-13 | 2020-01-09 | 株式会社駒匠 | Air conditioning type indoor environment cleaning system |
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