JP2005060904A - Fibrous structural material adsorbing and decomposing harmful chemical substance - Google Patents
Fibrous structural material adsorbing and decomposing harmful chemical substance Download PDFInfo
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- 239000000463 material Substances 0.000 title abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 81
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000002978 peroxides Chemical class 0.000 claims abstract description 7
- -1 hydroxyl radicals Chemical class 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 abstract description 2
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- 238000000354 decomposition reaction Methods 0.000 description 7
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- 238000004140 cleaning Methods 0.000 description 5
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- 239000002351 wastewater Substances 0.000 description 5
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- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
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- 238000012545 processing Methods 0.000 description 3
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- 239000010703 silicon Substances 0.000 description 3
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- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000274 adsorptive effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- JUWGUJSXVOBPHP-UHFFFAOYSA-B titanium(4+);tetraphosphate Chemical class [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JUWGUJSXVOBPHP-UHFFFAOYSA-B 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Abstract
Description
本発明は有害化学物質を吸着分解する繊維構造体に関するものであり、更に詳しく述べるならば、本発明は室内空気や排水中に含まれる有害化学物質を除去するフィルターやシートなどに好適に使用することができる有害化学物質を吸着分解する繊維構造物に関するものである。 The present invention relates to a fiber structure that adsorbs and decomposes harmful chemical substances, and more specifically, the present invention is suitably used for filters and sheets that remove harmful chemical substances contained in indoor air or waste water. The present invention relates to a fiber structure that can adsorb and decompose harmful chemical substances.
従来より、消臭、抗菌、防汚機能を繊維布帛に付与するため、繊維布帛に、シリコン架橋型樹脂などの接着剤を介して光触媒層を設ける方法が知られている（例えば、特開平１０−１８７９号公報など）。 Conventionally, there has been known a method of providing a photocatalyst layer on a fiber cloth via an adhesive such as a silicon cross-linked resin in order to impart a deodorizing, antibacterial, and antifouling function to the fiber cloth (for example, Japanese Patent Laid-Open No. Hei 10 -1879).
しかし、これらの光触媒を用いた繊維布帛は、その効果が発現するためには、紫外線や可視光線などの光照射が必要であり、晴れた日中で、しかも影のあたらない場所でしかその効果が認められないという欠点があった。さらに、これらの光触媒は、その分解力が大きく、繊維布帛自体をも分解してしまうので、繊維布帛を保護するための接着層の形成が必須であり、接着層も無機系バインダーをしなければならないという問題があった。
本発明の目的は、上記従来技術の有する問題点を解決し、光照射を必要とせず、時間や場所による制約のない、長期間にわたり有害化学物質を吸着分解することが可能な繊維構造体を提供することにある。 The object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a fiber structure that does not require light irradiation and is capable of adsorbing and decomposing harmful chemical substances over a long period of time without any restrictions due to time or place. It is to provide.
本発明者らは上記目的を達成するために鋭意検討した結果、光照射なしで水酸化ラジカル、オゾン又は過酸化物などを発生する空気触媒を用いるとき、所望の有害化学物質を吸着分解する繊維構造体が得られることを究明し、本発明に到達した。 As a result of intensive investigations to achieve the above object, the present inventors have found that a fiber that adsorbs and decomposes a desired harmful chemical substance when using an air catalyst that generates hydroxyl radicals, ozone, peroxide, or the like without light irradiation. The inventors have found that a structure can be obtained and have reached the present invention.
かくして本発明によれば、単繊維繊度が０．１ｄｔｅｘ未満の繊維から構成される繊維構造体であって、該繊維構造体には、光照射なしで水酸化ラジカル、オゾン又は過酸化物を発生する空気触媒が固着されていることを特徴とする有害化学物質を吸着分解する繊維構造体が提供される。 Thus, according to the present invention, a fiber structure composed of fibers having a single fiber fineness of less than 0.1 dtex, in which the hydroxyl structure, ozone, or peroxide is generated without light irradiation. There is provided a fiber structure for adsorbing and decomposing harmful chemical substances, characterized in that an air catalyst is fixed.
本発明によれば、長期間にわたる有害化学物質を吸着分解することが可能な繊維構造体を提供できるので、室内空気清浄用フィルター、排水浄化用フィルターなどに好適に使用することができる。 According to the present invention, a fiber structure capable of adsorbing and decomposing harmful chemical substances over a long period of time can be provided, and therefore, it can be suitably used for indoor air cleaning filters, waste water cleaning filters, and the like.
本発明において使用する繊維構造体とは、繊維から構成される織編物、不織布などを言い、該繊維構造体を樹脂加工や加熱成形加工することにより使用用途に適した形態を持つものである。 The fiber structure used in the present invention refers to a woven or knitted fabric or a non-woven fabric composed of fibers, and has a form suitable for the intended use by subjecting the fiber structure to resin processing or thermoforming.
ここで、繊維構造体を構成する繊維とは、例えば、木綿、麻などの天然繊維、ガラス繊維、カーボン繊維、金属繊維などの無機繊維、及びポリアミド繊維、ポリエステル繊維、芳香族ポリアミド繊維、アクリル繊維、ポリ塩化ビニル繊維、ポリオレフィン繊維、ポリアクリロニトリル繊維などの合成繊維などを言う。 Here, the fibers constituting the fiber structure include, for example, natural fibers such as cotton and hemp, inorganic fibers such as glass fibers, carbon fibers, and metal fibers, and polyamide fibers, polyester fibers, aromatic polyamide fibers, and acrylic fibers. And synthetic fibers such as polyvinyl chloride fiber, polyolefin fiber, and polyacrylonitrile fiber.
上記の中でも、物性のバランスが良好なポリエステル繊維、水酸化ラジカルやオゾン等に対して劣化の少ないポリ塩化ビニル繊維、ポリアクリロニトリル繊維を使用することが好ましく、その単繊維繊度は０．１ｄｔｅｘ未満であることが必要である。 Among the above, it is preferable to use a polyester fiber having a good balance of physical properties, a polyvinyl chloride fiber and a polyacrylonitrile fiber which are less deteriorated with respect to hydroxyl radicals and ozone, and the single fiber fineness is less than 0.1 dtex. It is necessary to be.
また、繊維の形状としては、短繊維紡績糸条、長繊維糸条、スプリットヤーン、テープヤーンなどのいずれの形状であってもよく、また繊維構造物は、織物、編物の他、不織布又はこれらの複合布のいずれであってもよい。 Further, the shape of the fiber may be any shape such as a short fiber spun yarn, a long fiber yarn, a split yarn, a tape yarn, etc., and the fiber structure may be a non-woven fabric or a knitted fabric in addition to a woven fabric or a knitted fabric. Any of these composite fabrics may be used.
上記繊維構造体には樹脂加工を施しても良く、その際に被覆する樹脂種には特に限定はないが、耐候性の優れた樹脂が好ましい。ここでいう耐候性に優れた樹脂とは、耐黄変性、保色性、光沢保持性、および耐薬品性等に優れた樹脂をいい、水溶性、溶剤可溶性のいずれも用いることができる。 The fiber structure may be subjected to resin processing, and the type of resin to be coated is not particularly limited, but a resin having excellent weather resistance is preferable. The resin excellent in weather resistance here means a resin excellent in yellowing resistance, color retention, gloss retention, chemical resistance and the like, and any of water-solubility and solvent-solubility can be used.
具体的には、塩化ビニル系樹脂、フッ素系樹脂、ポリオレフィン樹脂、ポリエステル樹脂、シリコン系樹脂、ウレタン樹脂、アクリル樹脂、ポリビニルアルコール系樹脂などが好ましく使用される。また、被覆後の樹脂層の表面に金属蒸着膜や金属箔を貼りあわせても構わない。 Specifically, vinyl chloride resin, fluorine resin, polyolefin resin, polyester resin, silicon resin, urethane resin, acrylic resin, polyvinyl alcohol resin and the like are preferably used. Moreover, you may stick a metal vapor deposition film and metal foil on the surface of the resin layer after coating.
また、これらの樹脂に添加する化合物としては顔料、難燃剤、紫外線吸収剤、可塑剤、滑剤、安定剤、充填剤、潤滑剤、硬化剤、消泡剤、防カビ剤などが挙げられ、これらを単独、あるいは複合して樹脂に混合することができる。 In addition, examples of compounds added to these resins include pigments, flame retardants, ultraviolet absorbers, plasticizers, lubricants, stabilizers, fillers, lubricants, curing agents, antifoaming agents, and antifungal agents. Can be mixed with the resin alone or in combination.
これらの樹脂を被覆する方法としては、公知のコーティング法、トッピング法、ディッピング法、ラミネート法、グラビア法などが挙げられ、該樹脂層の厚みは用途によって調整することができる。 Examples of methods for coating these resins include known coating methods, topping methods, dipping methods, laminating methods, and gravure methods. The thickness of the resin layer can be adjusted depending on the application.
樹脂層は繊維構造体の片面、あるいは両面に一層、あるいは多層形成させても構わない。さらに、このような繊維構造体には、吸水防止加工を施したり、塩化ビニル系樹脂中の可塑剤のブリードアウトを防止するために可塑剤防止層を設けたり、耐久性を向上させるために繊維構造体表面にアクリル撥水加工などを施したりすることも可能である。 The resin layer may be formed in one layer or multiple layers on one side or both sides of the fiber structure. Further, such a fiber structure is subjected to water absorption prevention processing, a plasticizer prevention layer is provided to prevent bleed out of the plasticizer in the vinyl chloride resin, and fibers are used to improve durability. An acrylic water repellent treatment or the like can be applied to the surface of the structure.
上記の方法により得られた繊維構造体には、空気触媒が固着される。ここで、空気触媒としては、光照射なしで、水と酸素との触媒反応で酸化・還元反応を行い、水酸化ラジカル、オゾン、過酸化物などを形成することが可能な化合物であれば特に限定はないが、好ましくはリン酸チタニウム系化合物が用いられる。 An air catalyst is fixed to the fiber structure obtained by the above method. Here, as the air catalyst, any compound that can perform oxidation / reduction reaction by catalytic reaction between water and oxygen without light irradiation to form hydroxyl radical, ozone, peroxide, etc. Although there is no limitation, a titanium phosphate compound is preferably used.
中でも、下記式（１）で表わされるリン酸チタニウム系化合物又はその縮合体を主成分とする化合物が好ましく、具体的には、下記式（２）〜（９）で表される化合物などが例示される。 Among them, a titanium phosphate compound represented by the following formula (1) or a compound mainly composed of a condensate thereof is preferable, and specific examples include compounds represented by the following formulas (2) to (9). Is done.
上記空気触媒を繊維構造体に固着する方法について述べる。該空気触媒として、リン酸チタニウム系化合物を用いた場合、特にバインダーを必要とせず、直接繊維構造体に固着することができる。 A method for fixing the air catalyst to the fiber structure will be described. When a titanium phosphate compound is used as the air catalyst, a binder is not particularly required, and the air catalyst can be directly fixed to the fiber structure.
具体的には、リン酸チタニウム系化合物を精製水やアルコール系溶液などに均一混合させて溶液状態、あるいは分散状態とし、該リン酸チタニウム系化合物混合溶液を繊維構造体に対して噴霧、含浸、コーティングなどを行う。その後、乾燥させるとバインダーなしでリン酸チタニウム系化合物を繊維構造体に対して固着することが出来る。その際、リン酸チタニウム系化合物の厚さが０．０５〜０．５μｍとなるように噴霧または塗布することが好ましい。膜厚が０．０５μｍ未満では効果が小さく、０．５μｍをこえると剥離が生じやすくなる場合がある。 Specifically, the titanium phosphate compound is uniformly mixed with purified water or an alcohol solution to form a solution state or a dispersed state, and the titanium phosphate compound mixture solution is sprayed and impregnated on the fiber structure. Apply coating. Thereafter, when dried, the titanium phosphate compound can be fixed to the fiber structure without a binder. In that case, it is preferable to spray or apply | coat so that the thickness of a titanium phosphate type compound may be 0.05-0.5 micrometer. If the film thickness is less than 0.05 μm, the effect is small, and if it exceeds 0.5 μm, peeling may easily occur.
上記のごとくバインダーを利用せずとも充分に効果は発揮できるが、バインダーを用いると空気触媒と繊維構造体との接着性、およびその耐久性がさらに向上する。 As described above, the effect can be sufficiently exhibited without using a binder. However, when a binder is used, the adhesion between the air catalyst and the fiber structure and the durability thereof are further improved.
次にバインダーを使用した場合について詳細に述べると、まず、空気触媒を公知の樹脂中に均一分散させた後、繊維構造体に樹脂層が形成された樹脂加工体に対して、公知のコーティング法、トッピング法、ディッピング法、グラビア法などにより固着せしめる。また、空気触媒入りの樹脂をフィルムに成形してから繊維構造体にラミネートしても良い。 Next, the case where a binder is used will be described in detail. First, a known coating method is applied to a resin processed body in which a resin layer is formed on a fiber structure after an air catalyst is uniformly dispersed in a known resin. It is fixed by topping method, dipping method, gravure method or the like. Alternatively, a resin containing an air catalyst may be formed into a film and then laminated to the fiber structure.
バインダーとして用いられる樹脂としては、熱可塑性樹脂、熱硬化性樹脂など特に限定されるものではないが、塩化ビニル系樹脂、フッ素系樹脂、ポリオレフィン樹脂、ポリエステル樹脂、シリコン系樹脂、ウレタン樹脂、アクリル樹脂、ポリビニルアルコール系樹脂などが挙げられる。これら樹脂は一般的に可塑剤などの各種添加剤を配合して用いても良い。 The resin used as the binder is not particularly limited, such as a thermoplastic resin or a thermosetting resin, but a vinyl chloride resin, a fluorine resin, a polyolefin resin, a polyester resin, a silicon resin, a urethane resin, an acrylic resin. And polyvinyl alcohol resins. These resins may be used in combination with various additives such as plasticizers.
かくして得られた本発明の有害化学物質を吸着分解する繊維構造体は、室内空気清浄用フィルター、排水浄化用フィルターなど大気中および水中に含まれる有害化学物質の吸着分解を必要とする用途に使用することが望ましい。なぜなら、フィルター等に付着した有害化学物質は吸着するだけでは大気中および水中から完全に除去することができないため、吸着をさせながら同時に分解もしなければならない。ただし、繊維構造体の水接触角が大きいと、水中の有害化学物質との接触機会が減る原因となるので、繊維構造体の水に対する接触角を１５度以下にすることが好ましい。また、大気中の有害化学物質との接触機会を増やすために、繊維構造体を構成する繊維の繊度は、表面積を増大させるために、前述のように０．１ｄｔｅｘ未満にすることが必要である。 The fiber structure for adsorbing and decomposing harmful chemical substances of the present invention thus obtained is used for applications that require adsorption and decomposition of harmful chemical substances contained in the atmosphere and water, such as indoor air cleaning filters and waste water purification filters. It is desirable to do. This is because harmful chemical substances adhering to a filter or the like cannot be completely removed from the air and water by simply adsorbing them, and must be decomposed simultaneously while being adsorbed. However, when the water contact angle of the fiber structure is large, the chance of contact with harmful chemical substances in water is reduced. Therefore, the contact angle of the fiber structure with water is preferably 15 degrees or less. Further, in order to increase the chance of contact with harmful chemical substances in the atmosphere, the fineness of the fibers constituting the fiber structure needs to be less than 0.1 dtex as described above in order to increase the surface area. .
かくして得られた有害化学物質を吸着分解する繊維構造体は、室内空気清浄用フィルター、排水浄化用フィルターなどに用いることができる。これらの用途に用いられる繊維構造体には、強度が必要とされるが、従来の光触媒を用いた繊維構造物ではそれ自体をも劣化してしまい、また光源がなければ有害化学物質を分解することが出来なかったのに対し、本発明の有害化学物質を吸着分解する繊維構造体は、光照射を必要とせず、酸素と水分に接触する環境下で使用すれば、半永久的に有害化学物質を分解する効果を持続することができる。 The fiber structure obtained by adsorbing and decomposing harmful chemical substances thus obtained can be used for indoor air cleaning filters, waste water cleaning filters, and the like. Fiber structures used for these applications require strength, but conventional fiber structures using photocatalysts degrade themselves and, if there is no light source, decompose harmful chemical substances. In contrast, the fiber structure for adsorbing and decomposing harmful chemical substances of the present invention does not require light irradiation, and if used in an environment where it comes into contact with oxygen and moisture, it is semi-permanently harmful chemical substances. The effect of decomposing can be maintained.
以下、実施例を挙げて本発明の構成および効果をさらに詳細に説明する。尚、実施例における各物性は後述の方法により求めたものである。 Hereinafter, an example is given and the composition and effect of the present invention are explained in detail. In addition, each physical property in an Example was calculated | required by the below-mentioned method.
［実施例１］
繊維構造体としてポリ塩化ビニル繊維不織布（繊度０．０８ｄｔｅｘ、目付：４ｇ／ｍ２）を用いた。この繊維構造体に対して、繊維構造体表面にリン酸チタニウム系化合物混合水溶液（固形分として０．２５ｗｔ％）をスプレーガンにより塗布、乾燥した。塗布量は２５ｇ／ｍ２とした。
[Example 1]
A polyvinyl chloride fiber nonwoven fabric (fineness: 0.08 dtex, basis weight: 4 g / m 2 ) was used as the fiber structure. To this fiber structure, a titanium phosphate compound mixed aqueous solution (0.25 wt% as a solid content) was applied to the surface of the fiber structure with a spray gun and dried. The coating amount was 25 g / m 2 .
［実施例２］
繊維構造体としてポリアクリロニトリル繊維不織布（繊度０．０８ｄｔｅｘ、目付：１０ｇ／ｍ２）を用いた。この繊維構造体に対して、リン酸チタニウム系化合物混合水溶液（固形分として０．２５ｗｔ％）をスプレーガンにより塗布、乾燥した。塗布量は２５ｇ／ｍ２とした。
[Example 2]
A polyacrylonitrile fiber nonwoven fabric (fineness: 0.08 dtex, basis weight: 10 g / m 2 ) was used as the fiber structure. A titanium phosphate compound mixed aqueous solution (0.25 wt% as a solid content) was applied to the fiber structure with a spray gun and dried. The coating amount was 25 g / m 2 .
［比較例１］
繊維構造体としてポリ塩化ビニル繊維不織布（繊度０．０８ｄｔｅｘ、目付：４ｇ／ｍ２）表面にアモルファス型過酸化チタンゾル（ＴｉＯ２として０．８５％含有）スプレーガンにより塗布、乾燥した。塗布量は２５ｇ／ｍ２とした。
[Comparative Example 1]
As a fiber structure, a polyvinyl chloride fiber nonwoven fabric (fineness: 0.08 dtex, basis weight: 4 g / m 2 ) was applied to an amorphous titanium peroxide sol (containing 0.85% as TiO 2 ) spray gun and dried. The coating amount was 25 g / m 2 .
［比較例２］
繊維構造体としてポリアクリロニトリル繊維不織布（繊度０．０８ｄｔｅｘ、目付：１０ｇ／ｍ２）表面にアモルファス型過酸化チタンゾル（ＴｉＯ２として０．８５％含有）スプレーガンにより塗布、乾燥した。塗布量は２５ｇ／ｍ２とした。
[Comparative Example 2]
As a fiber structure, a polyacrylonitrile fiber nonwoven fabric (fineness: 0.08 dtex, basis weight: 10 g / m 2 ) was coated on an amorphous titanium peroxide sol (containing 0.85% as TiO 2 ) spray gun and dried. The coating amount was 25 g / m 2 .
（１）吸着分解性能試験
有害化学物質として硫化水素ガス（３０ｐｐｍ）を封入したフッ化ビニリデン製バック中に試料を放置し、各バックに一定時間紫外光を照射しながら一定時間経過後のガス検知管によるバック内のガス濃度測定を行い、吸着分解性能を評価した。結果を表１に示す。
(1) Adsorption decomposition performance test A sample is left in a vinylidene fluoride bag filled with hydrogen sulfide gas (30 ppm) as a harmful chemical substance, and the gas is detected after a certain time while irradiating each bag with ultraviolet light for a certain time. The gas concentration in the bag was measured with a tube, and the adsorptive decomposition performance was evaluated. The results are shown in Table 1.
２４時間後のガスの吸着分解性能は、実施例の方が比較例に比べて良好であり、吸着分解速度も速く、効果が明確である。 Regarding the gas adsorption decomposition performance after 24 hours, the example is better than the comparative example, the adsorption decomposition rate is fast, and the effect is clear.
（２）基材劣化性
触媒の分解作用による基材劣化性を評価するために、繊維構造体として不織布を用いて、２時間紫外光を照射後、ＪＩＳ Ｌ １０９６に従い、不織布の引張強さを測定し、強力保持率を評価した。結果を表２に示す。
(2) Base material deterioration property In order to evaluate the base material deterioration property due to the decomposition action of the catalyst, a nonwoven fabric is used as the fiber structure, and after irradiation with ultraviolet light for 2 hours, the tensile strength of the nonwoven fabric is determined in accordance with JIS L 1096. Measure and evaluate the strength retention. The results are shown in Table 2.
基材劣化に関して、実施例は比較例に比べて基材劣化が格段に少ないことから、触媒による基材劣化防止に対し効果が大きい。 Regarding the base material deterioration, since the base material deterioration is remarkably small as compared with the comparative example, the effect is great for the base material deterioration prevention by the catalyst.
（３）水接触角
繊維構造体と水との接触角度は協和界面科学株式会社製：ＣＯＮＴＡＣＴ−ＡＮＧＬＥ ＭＥＴＥＲ（ＣＡ−Ｄ）によって測定した。測定は、化合物を固着、乾燥後に紫外光を照射しながら、一定時間毎に行った。結果を表３に示す。
(3) Water contact angle The contact angle between the fiber structure and water was measured by CONACT-ANGLE METER (CA-D) manufactured by Kyowa Interface Science Co., Ltd. The measurement was performed at fixed intervals while fixing the compound and irradiating ultraviolet light after drying. The results are shown in Table 3.
水の接触角に関して、実施例は比較例に比べて、基材に化合物を固着させ、乾燥した時点から低い接触角を示し、濡れ性が良好であり、２４時間経過後もほぼ接触角に変化が見られない。 As for the contact angle of water, the examples show a low contact angle from the time when the compound is fixed to the substrate and dried, compared to the comparative example, the wettability is good, and the contact angle changes almost after 24 hours. Is not seen.
本発明によれば、光照射を必要とせず、時間や場所による制約のない、長期間にわたる大気中および水中の有害化学物質の吸着分解性能が格段に向上された繊維構造体が得られるので、室内空気清浄用フィルター、排水浄化用フィルターなどの環境浄化用途に好適に使用できる。 According to the present invention, there is no need for light irradiation, and there is no restriction due to time or place, so that a fiber structure can be obtained in which the adsorptive decomposition performance of harmful chemical substances in the atmosphere and water over a long period of time is significantly improved. It can be suitably used for environmental purification applications such as indoor air purification filters and wastewater purification filters.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305917A (en) * | 2005-04-28 | 2006-11-09 | Kyoraku Co Ltd | Plastic molding with deodorization function and its production method |
| JP5944072B1 (en) * | 2014-10-24 | 2016-07-05 | 東洋紡株式会社 | Substance decomposition remover |
| JP2017020674A (en) * | 2015-07-08 | 2017-01-26 | 株式会社野田ハッピー | Non-duct type smokeless roaster |
| JP6078191B1 (en) * | 2016-04-22 | 2017-02-08 | 東洋紡株式会社 | Cotton for bedding |
| JP6078192B1 (en) * | 2016-04-22 | 2017-02-08 | 東洋紡株式会社 | Textile or knitting for bedding |
| WO2017169148A1 (en) * | 2016-03-29 | 2017-10-05 | 東洋紡株式会社 | Nonwoven fabric, inner batting, and weaving or knitting for bedding |
| WO2019097647A1 (en) * | 2017-11-16 | 2019-05-23 | 佐伯 午郎 | Air purification medium |
| JP2020179208A (en) * | 2020-07-13 | 2020-11-05 | 佐伯 午郎 | Air cleaning medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305917A (en) * | 2005-04-28 | 2006-11-09 | Kyoraku Co Ltd | Plastic molding with deodorization function and its production method |
| JP5944072B1 (en) * | 2014-10-24 | 2016-07-05 | 東洋紡株式会社 | Substance decomposition remover |
| CN106687551A (en) * | 2014-10-24 | 2017-05-17 | 东洋纺株式会社 | Substance decomposing and removing agent |
| JP2017020674A (en) * | 2015-07-08 | 2017-01-26 | 株式会社野田ハッピー | Non-duct type smokeless roaster |
| WO2017169148A1 (en) * | 2016-03-29 | 2017-10-05 | 東洋紡株式会社 | Nonwoven fabric, inner batting, and weaving or knitting for bedding |
| JP6078191B1 (en) * | 2016-04-22 | 2017-02-08 | 東洋紡株式会社 | Cotton for bedding |
| JP6078192B1 (en) * | 2016-04-22 | 2017-02-08 | 東洋紡株式会社 | Textile or knitting for bedding |
| WO2019097647A1 (en) * | 2017-11-16 | 2019-05-23 | 佐伯 午郎 | Air purification medium |
| JPWO2019097647A1 (en) * | 2017-11-16 | 2019-11-14 | 午郎 佐伯 | Air cleaning medium |
| JP2020179208A (en) * | 2020-07-13 | 2020-11-05 | 佐伯 午郎 | Air cleaning medium |
| JP7015876B2 (en) | 2020-07-13 | 2022-02-03 | 午郎 佐伯 | Air purifying medium |
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