JPH08117683A - Coated body and production of coated body - Google Patents
Coated body and production of coated bodyInfo
- Publication number
- JPH08117683A JPH08117683A JP6258145A JP25814594A JPH08117683A JP H08117683 A JPH08117683 A JP H08117683A JP 6258145 A JP6258145 A JP 6258145A JP 25814594 A JP25814594 A JP 25814594A JP H08117683 A JPH08117683 A JP H08117683A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- coating film
- substrate
- synthetic resin
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000000843 powder Substances 0.000 claims abstract description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000011248 coating agent Substances 0.000 claims abstract description 45
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 36
- 239000000057 synthetic resin Substances 0.000 claims abstract description 35
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 239000002253 acid Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000009503 electrostatic coating Methods 0.000 claims abstract description 8
- 150000002506 iron compounds Chemical class 0.000 claims description 19
- 230000002378 acidificating effect Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 82
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 5
- 229910052815 sulfur oxide Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 229920000298 Cellophane Polymers 0.000 description 2
- 229920001780 ECTFE Polymers 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- CHJAYYWUZLWNSQ-UHFFFAOYSA-N 1-chloro-1,2,2-trifluoroethene;ethene Chemical group C=C.FC(F)=C(F)Cl CHJAYYWUZLWNSQ-UHFFFAOYSA-N 0.000 description 1
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Catalysts (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塗装体及び塗装体の製
造方法に関する。更に詳細には、大気中の低濃度の窒素
酸化物や硫黄酸化物や一酸化炭素を除去する塗装体及び
塗装体の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coated body and a method for manufacturing the coated body. More specifically, the present invention relates to a coated body for removing low-concentration nitrogen oxides, sulfur oxides, and carbon monoxide in the atmosphere, and a method for producing the coated body.
【０００２】[0002]
【従来の技術】窒素酸化物や硫黄酸化物や一酸化炭素
（以下窒素酸化物という）は人間の健康に悪影響を与え
るから、従来、この窒素化合物等については環境基準が
設けられているが、自動車道路周辺では依然として環境
基準を越える濃度となっている。従って、この窒素酸化
物を減少することの必要性が急務である。2. Description of the Related Art Nitrogen oxides, sulfur oxides and carbon monoxide (hereinafter referred to as "nitrogen oxides") have an adverse effect on human health. Therefore, environmental standards have been set for these nitrogen compounds. The concentration around the motorway is still above the environmental standard. Therefore, there is an urgent need to reduce this nitrogen oxide.
【０００３】従来、自動車等の移動発生源や発電所等の
固定発生源の排ガス中の高濃度の窒素酸化物等を除去す
る触媒としては、特開昭５３−７５９１号公報、特開昭
５７−７１８９８号公報、特開昭５７−１０５２４０号
公報等に記載あるように、種々知られている。又、自動
車道トンネルの中の窒素酸化物等を除去する装置として
は、特開平３−２３３１００号公報に記載あるように、
アナターゼ型二酸化チタンと活性炭とからなる触媒を入
れた除去装置と、波長が３００ｎｍ以上の光を照射する
光源からなる装置が知られている。Conventionally, catalysts for removing high-concentration nitrogen oxides in exhaust gas from mobile sources such as automobiles and stationary sources such as power plants have been disclosed in Japanese Patent Laid-Open Nos. 53-7591 and 57. As described in Japanese Patent Laid-Open No. 71898, Japanese Patent Laid-Open No. 57-105240, and the like, various types are known. Further, as a device for removing nitrogen oxides etc. in a tunnel of a motorway, as described in JP-A-3-233100,
2. Description of the Related Art There is known a device including a removing device containing a catalyst composed of anatase type titanium dioxide and activated carbon, and a light source for irradiating light having a wavelength of 300 nm or more.
【０００４】[0004]
【発明が解決しようとする課題】しかし、前記特開昭５
３−７５９１号公報、特開昭５７−７１８９８号公報、
特開昭５７−１０５２４０号公報記載の触媒は、自動車
の排ガス等の高濃度の窒素酸化物等を除去するが、大気
中の低濃度の窒素酸化物等は除去しないので、環境基準
を越える低濃度の窒素酸化物等には効果がない。又、特
開平３−２３３１００号公報記載の触媒は大気中の窒素
酸化物等を除去できるので、好ましい装置であるが、こ
の装置では、高価な装置を設置するために不便である。
又、波長が３００ｎｍの発光装置を稼働させるために、
多くのエネルギーが必要であるという問題もある。However, the above-mentioned Japanese Unexamined Patent Application Publication No.
3-7591, JP-A-57-71898,
The catalyst described in JP-A-57-105240 removes high-concentration nitrogen oxides and the like in automobile exhaust gas, but does not remove low-concentration nitrogen oxides and the like in the atmosphere, and therefore, the catalyst exceeds the environmental standard. It has no effect on the concentration of nitrogen oxides. Further, the catalyst described in JP-A-3-233100 is a preferable apparatus because it can remove nitrogen oxides and the like in the atmosphere, but this apparatus is inconvenient because an expensive apparatus is installed.
Also, in order to operate a light emitting device with a wavelength of 300 nm,
Another problem is that it requires a lot of energy.
【０００５】そこで、本発明の目的は、高価な装置やエ
ネルギーを必要としないで、大気中の窒素酸化物等を除
去することができる塗装体およびこの塗装体の製造方法
を提供することである。Therefore, an object of the present invention is to provide a coated body capable of removing nitrogen oxides and the like in the atmosphere without requiring expensive equipment and energy, and a method for producing the coated body. .
【０００６】[0006]
【課題を解決するための手段】本発明は上記目的を達成
するためになされたものであって、請求項１記載の発明
は、基材の表面に二酸化チタン粉末と活性炭粉末とから
なる組成物を含有する塗膜が設けられているものであ
る。The present invention has been made to achieve the above object, and the invention according to claim 1 is a composition comprising titanium dioxide powder and activated carbon powder on the surface of a substrate. A coating film containing is provided.
【０００７】請求項１記載の発明の二酸化チタン粉末と
活性炭粉末とからなる組成物の中に、請求項２記載の発
明のように、鉄化合物を含有させると更に効果がよくな
る。即ち、請求項２記載の発明は、基材の表面に二酸化
チタン粉末と活性炭粉末と鉄化合物粉末とからなる組成
物を含有する塗膜が設けられているものである。When the iron compound is contained in the composition comprising the titanium dioxide powder and the activated carbon powder according to the first aspect of the invention as in the second aspect of the invention, the effect is further improved. That is, in the invention of claim 2, a coating film containing a composition comprising titanium dioxide powder, activated carbon powder and iron compound powder is provided on the surface of the substrate.
【０００８】又、上記請求項１や請求項２記載の発明を
直接金属等基材の表面に塗布すると、空気中の窒素酸化
物等が酸化され除去される際に発生する酸性物によって
腐食されることがあるので、請求項３記載の発明のよう
に、耐酸性膜を設け、この上に、請求項１や請求項２記
載の発明の塗膜を設けるとよい。即ち、請求項３記載の
発明は、基材の表面に設けられている耐酸性膜の上に請
求項１または２記載の組成物を含有する塗膜が設けられ
ているものである。When the invention according to claim 1 or 2 is directly applied to the surface of a substrate such as a metal, it is corroded by an acidic substance generated when nitrogen oxides in the air are oxidized and removed. Therefore, it is advisable to provide an acid resistant film as in the invention of claim 3 and to provide the coating film of the invention of claim 1 or claim 2 thereon. That is, the invention according to claim 3 is such that a coating film containing the composition according to claim 1 or 2 is provided on the acid-resistant film provided on the surface of the substrate.
【０００９】又、請求項１〜３記載の組成物を含有する
塗膜としては種々あるが、請求項４、５記載の発明のよ
うに、合成樹脂が造膜性、接着性がよく耐酸性がよいの
で、合成樹脂を主成分とする塗膜が好ましい。即ち、請
求項４記載の発明は、基材の表面に請求項１または２記
載の組成物を含有する合成樹脂を主成分とする塗膜が設
けられているものであり、請求項５記載の発明は、基材
の表面に設けられている耐酸性膜の上に請求項１または
２記載の組成物を含有する合成樹脂を主成分とする塗膜
が設けられているものである。Further, although there are various coating films containing the compositions according to claims 1 to 3, as in the inventions according to claims 4 and 5, the synthetic resin is good in film forming property, adhesiveness and acid resistance. Therefore, a coating film containing a synthetic resin as a main component is preferable. That is, the invention according to claim 4 is that a coating film containing a synthetic resin containing the composition according to claim 1 or 2 as a main component is provided on the surface of the base material. According to the invention, a coating film containing a synthetic resin containing the composition according to claim 1 as a main component is provided on an acid resistant film provided on the surface of a substrate.
【００１０】又、この請求項４、５記載の発明の合成樹
脂を主成分とする塗膜を設ける方法としては、合成樹脂
を溶剤に溶解させた溶剤や媒体に乳化させたエマルジョ
ン等として塗布して塗膜を設けてもよいが、かかる方法
では、二酸化チタン粉末や活性炭粉末の表面に合成樹脂
皮膜が生じて効果が少なくなるので、請求項６、７記載
の発明のように、静電塗装で粉末を基材に付着させ、そ
の後、加熱して、二酸化チタン粉末、活性炭粉末を溶融
した合成樹脂で融着させる方法が表面に二酸化チタンや
活性炭が表面に顕れるから効果が減少しないので好まし
い。Further, as a method for providing a coating film containing the synthetic resin as a main component of the inventions according to claims 4 and 5, the synthetic resin is applied as a solvent in which the synthetic resin is dissolved or an emulsion obtained by emulsifying in a medium. Although a coating film may be provided by means of such a method, since a synthetic resin film is formed on the surface of the titanium dioxide powder or the activated carbon powder by this method, the effect is reduced. The method of adhering the powder to the base material with the above method, and then heating and fusing the titanium dioxide powder and the activated carbon powder with the molten synthetic resin is preferable because the effect is not diminished because the titanium dioxide and the activated carbon appear on the surface.
【００１１】即ち、請求項６記載の発明は、請求項１ま
たは２記載の組成物と合成樹脂粉末とからなる混合物を
静電塗装で基材に付着させた後、加熱炉で加熱して合成
樹脂を溶融させて基材の表面に塗膜を形成させるもので
あるし、請求項７記載の発明は、基材の表面に設けられ
ている耐酸性膜の上に請求項１または２記載の組成物と
合成樹脂粉末とからなる混合物を静電塗装で付着させた
後、加熱炉で加熱して合成樹脂を溶融させて基材の表面
に塗膜を形成させるものである。That is, in the invention described in claim 6, the mixture comprising the composition according to claim 1 or 2 and the synthetic resin powder is adhered to the substrate by electrostatic coating, and then heated in a heating furnace to synthesize. The resin is melted to form a coating film on the surface of the base material, and the invention of claim 7 is directed to the acid-resistant film provided on the surface of the base material. After a mixture of the composition and synthetic resin powder is applied by electrostatic coating, it is heated in a heating furnace to melt the synthetic resin and form a coating film on the surface of the substrate.
【００１２】請求項１〜７記載の発明に使用される二酸
化チタンとしてはアナターゼ型二酸化チタンがルチル型
二酸化チタンより効果が大きく好ましい。請求項１〜７
記載の発明において各成分を混合して組成物となす方法
は機械的方法でもよいし化学的方法でもよい。特に、ボ
ールミル等の混合装置で機械的に混合することが好まし
い。又、請求項２〜７記載の発明に使用される鉄化合物
粉末としては、酸化鉄（Ｆｅ2 Ｏ3 ）が好適である。As the titanium dioxide used in the invention described in claims 1 to 7, anatase type titanium dioxide is preferable because it has a larger effect than rutile type titanium dioxide. Claims 1-7
In the invention described above, the method of mixing the components to form a composition may be a mechanical method or a chemical method. In particular, it is preferable to mechanically mix with a mixing device such as a ball mill. Further, iron oxide (Fe 2 O 3 ) is suitable as the iron compound powder used in the inventions of claims 2 to 7.
【００１３】請求項４〜７記載の発明では、塗膜に合成
樹脂を主成分とする塗膜が使用されているが、その理由
は、二酸化チタン粉末と活性炭粉末によって二酸化窒素
等を酸化して生じた酸性物によって塗膜が劣化する可能
性があるので、耐酸性の良好な合成樹脂を主成分とする
塗膜が使用されるのである。特に耐酸性の良好なフッ素
樹脂粉末やポリエチレン、ポリプロピレン等のオレフィ
ン樹脂を主成分とする塗膜が好ましい。In the inventions according to claims 4 to 7, a coating film containing a synthetic resin as a main component is used for the coating film. The reason is that titanium dioxide powder and activated carbon powder oxidize nitrogen dioxide and the like. Since a coating film may be deteriorated by the generated acidic substance, a coating film containing a synthetic resin having good acid resistance as a main component is used. In particular, a fluorine resin powder having good acid resistance and a coating film containing an olefin resin such as polyethylene or polypropylene as a main component are preferable.
【００１４】又、請求項３、５、７記載の基材の表面に
設けられている耐酸性膜としては合成樹脂の膜、特に、
フッ素樹脂やオレフィン樹脂の膜が好適である。請求項
６、７記載の発明に使用される合成樹脂粉末としてフッ
素樹脂粉末を使用するときには、このフッ素樹脂を静電
塗装で付着させた後、加熱炉で加熱して基材の表面に塗
膜を形成させるから、耐熱性の良好なフッ素樹脂粉末を
使用することが好ましい。かかるフッ素樹脂粉末として
はポリテトラフルオロエチレン（ＰＴＦＥ）、エチレン
クロロトリフルオロエチレン共重合体（ＥＣＴＦＥ）、
ポリフッ素ビニリデン（ＰＶＤＦ）が好適である。Further, as the acid resistant film provided on the surface of the substrate according to claim 3, 5, or 7, a synthetic resin film, particularly,
A film of fluororesin or olefin resin is suitable. When a fluororesin powder is used as the synthetic resin powder used in the invention according to claims 6 and 7, the fluororesin powder is applied by electrostatic coating and then heated in a heating furnace to form a coating film on the surface of the base material. Therefore, it is preferable to use a fluororesin powder having good heat resistance. Examples of such fluororesin powder include polytetrafluoroethylene (PTFE), ethylene chlorotrifluoroethylene copolymer (ECTFE),
Polyvinylidene fluoride (PVDF) is preferred.
【００１５】請求項１〜７記載の発明において、二酸化
チタン粉末と活性炭粉末との混合比率は適宜でよいが、
重量比で二酸化チタン粉末と活性炭粉末とが３：１が最
も効果が大きいので、この比率またはこの比率の前後が
好ましい。又、請求項２〜７記載の発明において、二酸
化チタン粉末と活性炭粉末と鉄化合物粉末からなる組成
物が使用されているが、この鉄化合物粉末を混合させる
量としては適宜でよいが、数重量％が好適である。In the invention described in claims 1 to 7, the mixing ratio of the titanium dioxide powder and the activated carbon powder may be proper,
A weight ratio of titanium dioxide powder to activated carbon powder of 3: 1 is most effective, so this ratio or a ratio around this ratio is preferable. Further, in the inventions according to claims 2 to 7, a composition comprising titanium dioxide powder, activated carbon powder and iron compound powder is used. The amount of the iron compound powder to be mixed may be appropriate, but it is several weights. % Is preferred.
【００１６】又、請求項４〜７記載の発明においては、
二酸化チタン粉末と活性炭粉末と鉄化合物粉末とからな
る組成物を含有する合成樹脂を主成分とする塗膜が設け
られているが、この合成樹脂の比率は適宜でよい。しか
し、合成樹脂が多くなり、二酸化チタンや活性炭等が少
なくなると性能が不十分になり、合成樹脂が少なく二酸
化チタンや活性炭が多くなり過ぎると、塗膜が形成でき
なくなるので好ましくない。この合成樹脂の使用量は使
用する樹脂の種類によって異なる。例えば、合成樹脂と
してフッ素樹脂を使用した場合には、フッ素樹脂１００
重量部に対して二酸化チタンや活性炭が２重量部以上１
７０重量部以下が好ましい。Further, in the inventions according to claims 4 to 7,
A coating film containing a synthetic resin as a main component, which contains a composition of titanium dioxide powder, activated carbon powder, and iron compound powder, is provided, but the ratio of the synthetic resin may be appropriate. However, if the amount of synthetic resin increases and the amount of titanium dioxide or activated carbon decreases, the performance becomes insufficient. If the amount of synthetic resin decreases and the amount of titanium dioxide or activated carbon increases too much, a coating film cannot be formed, which is not preferable. The amount of this synthetic resin used depends on the type of resin used. For example, when a fluororesin is used as the synthetic resin, the fluororesin 100
2 parts by weight or more of titanium dioxide or activated carbon to 1 part by weight 1
It is preferably 70 parts by weight or less.
【００１７】請求項１〜５記載の発明の塗装体は太陽光
線が直接あるいは間接に照射される場所で使用するので
あるが、この太陽光線に替えて波長が３００ｎｍ以上の
光源をこの塗装体の表面に照射してもよい。The coated body of the invention according to claims 1 to 5 is used in a place where sunlight is directly or indirectly irradiated. Instead of this sunlight, a light source having a wavelength of 300 nm or more is used for this coated body. The surface may be irradiated.
【００１８】[0018]
【作用】請求項１〜５記載の発明の塗装体では、基体の
表面に二酸化チタン粉末と活性炭粉末とからなる組成物
を含有する塗膜が設けられているから、この塗膜の表面
に太陽光線が直接または間接に照射すると、この太陽光
線の中の３００ｎｍ以上の波長の光によって二酸化チタ
ン粉末の触媒作用により、大気中の低濃度の窒素酸化物
や硫黄酸化物や一酸化炭素が酸化し、雨水等に流れてゆ
くから、大気中の窒素酸化物が減少する。又、この太陽
光線の代わりに波長が３００ｎｍ以上の光を照射するこ
ともできる。In the coated article of the invention described in claims 1 to 5, a coating film containing a composition of titanium dioxide powder and activated carbon powder is provided on the surface of the substrate. When directly or indirectly irradiated with light, the light of wavelengths of 300 nm or longer in the sunlight oxidizes low-concentration nitrogen oxides, sulfur oxides, and carbon monoxide in the atmosphere due to the catalytic action of titanium dioxide powder. , Nitrogen oxides in the atmosphere decrease as it flows into rainwater. Further, instead of the sun rays, light having a wavelength of 300 nm or more can be irradiated.
【００１９】活性炭粉末は、この二酸化チタンの光触媒
活性作用により生じた酸化生成物を保持したり、あるい
は、大気中の窒素酸化物や硫黄酸化物や一酸化炭素を吸
着保持して二酸化チタンへ渡す作用がある。又、請求項
２〜５記載の発明では、二酸化チタン粉末と活性炭粉末
の他に鉄化合物が含有されているから、二酸化チタンと
活性炭の作用が増幅されて効果が更に大きくなる。The activated carbon powder holds the oxidation product generated by the photocatalytic activity of this titanium dioxide, or adsorbs and holds nitrogen oxides, sulfur oxides and carbon monoxide in the atmosphere and transfers them to titanium dioxide. It has an effect. Further, in the inventions of claims 2 to 5, since the iron compound is contained in addition to the titanium dioxide powder and the activated carbon powder, the effects of the titanium dioxide and the activated carbon are amplified and the effect is further enhanced.
【００２０】又、請求項４、５記載の発明では、塗膜と
して、合成樹脂を主成分とする塗膜を使用するから、二
酸化チタン粉末と活性炭粉末や鉄化合物粉末を基材の表
面に強固に付着させ易いし、二酸化チタンや活性炭や鉄
化合物の酸化作用で生じた酸化物に対する抵抗が大き
い。又、請求項３、５記載の発明では、基材の表面に耐
酸性膜が設けられているから、二酸化チタン粉末と活性
炭粉末や鉄化合物粉末の作用で生じた酸性物が基材の表
面を腐食することがない。Further, in the inventions of claims 4 and 5, since a coating film containing a synthetic resin as a main component is used as the coating film, titanium dioxide powder and activated carbon powder or iron compound powder are firmly adhered to the surface of the substrate. It is easy to attach to and is highly resistant to oxides generated by the oxidation of titanium dioxide, activated carbon and iron compounds. Further, in the inventions according to claims 3 and 5, since the acid resistant film is provided on the surface of the base material, the acidic substance generated by the action of the titanium dioxide powder and the activated carbon powder or the iron compound powder may cause the surface of the base material to be affected. Will not corrode.
【００２１】又、請求項６、７記載の発明では、二酸化
チタン粉末と活性炭粉末や鉄化合物粉末を合成樹脂粉末
とからなる混合物を静電塗装で付着させた後、加熱炉で
加熱して合成樹脂を溶融させて基材の表面に塗膜を形成
させるから、塗膜の表面に二酸化チタン粉末や活性炭粉
末や鉄化合物粉末が露出し、これ等の触媒作用が妨害さ
れない。Further, in the inventions according to claims 6 and 7, a mixture of titanium dioxide powder and activated carbon powder or iron compound powder and synthetic resin powder is applied by electrostatic coating and then heated in a heating furnace to synthesize. Since the resin is melted to form a coating film on the surface of the base material, titanium dioxide powder, activated carbon powder and iron compound powder are exposed on the surface of the coating film, and the catalytic action thereof is not disturbed.
【００２２】[0022]
【実施例】次に、本発明の実施例を説明する。 （実施例１〜１０、比較例１）表１に示す化合物を充分
混合してほぼ均一な組成物を製造し、これを基材の上に
静電塗装で付着させ、１７０℃〜１８０℃で加熱して厚
さ５０μｍの塗膜を有する塗装体を製造した。この塗装
体を図１に示す装置の反応容器６の試料７として取り付
けて一酸化窒素に対する酸化能力を測定した。Next, embodiments of the present invention will be described. (Examples 1 to 10 and Comparative Example 1) The compounds shown in Table 1 were thoroughly mixed to prepare a substantially uniform composition, which was applied onto a substrate by electrostatic coating at 170 ° C to 180 ° C. It was heated to produce a coated body having a coating film with a thickness of 50 μm. This coated body was attached as a sample 7 of a reaction vessel 6 of the apparatus shown in FIG. 1 to measure the oxidizing ability with respect to nitric oxide.
【００２３】[0023]
【表１】 [Table 1]
【００２４】図１に示す装置について説明すると、１は
一酸化窒素の標準ガス（濃度５０ｐｐｍ）を入れた高圧
容器、２は標準ガスを希釈する高純度空気を入れた高圧
容器、３は減圧弁、４は精密流量調節器、５は四方弁、
６はガラス製のシャーレ型反応容器、７は試料、８は光
化学用蛍光灯（１０Ｗ×３本）、９は化学発光式窒素酸
化物計、１０は空気ポンプ、１１および１２は排気口で
ある。反応容器６は２個直列に設けられ、この反応容器
６の中に試料７をそれぞれ入れる。Explaining the apparatus shown in FIG. 1, 1 is a high-pressure container containing a standard gas of nitric oxide (concentration 50 ppm), 2 is a high-pressure container containing high-purity air for diluting the standard gas, and 3 is a pressure reducing valve. 4 is a precision flow controller, 5 is a four-way valve,
6 is a glass petri dish type reaction vessel, 7 is a sample, 8 is a fluorescent lamp for photochemistry (10 W × 3), 9 is a chemiluminescence type nitrogen oxide meter, 10 is an air pump, and 11 and 12 are exhaust ports. . Two reaction vessels 6 are provided in series, and the sample 7 is put in each of the reaction vessels 6.
【００２５】この装置を使用して一酸化窒素に対する酸
化能力の測定方法について説明すると、高圧容器１の標
準ガスと高圧容器２の空気とを精密流量調節器４で予め
定めている流量比で混合させて、１ｐｐｍの濃度の一酸
化窒素を流量０．５ １／ｍｉｎで反応容器８の中に導
き、試料７に接触させる。この際、この試料７の表面に
は蛍光灯８から波長３００〜４００ｎｍの近紫外線を照
射する。試料７と接触した空気は排気口１２から排出さ
れる。この試料７と接触した空気が排気口１２から排出
される通路の途中から一定量を空気ポンプ１０で取っ
て、化学発光式窒素酸化物計９で窒素酸化物の濃度変化
を記録した後、排気口１１から排出する。このようにし
て測定した結果を表２に示す。尚、除去率４０％以上を
○とし、以下を×とした。Explaining the method of measuring the oxidizing ability with respect to nitric oxide using this apparatus, the standard gas in the high pressure vessel 1 and the air in the high pressure vessel 2 are mixed at a flow rate ratio predetermined by the precision flow rate controller 4. Then, nitric oxide having a concentration of 1 ppm is introduced into the reaction vessel 8 at a flow rate of 0.5 1 / min and brought into contact with the sample 7. At this time, the surface of the sample 7 is irradiated with near-ultraviolet rays having a wavelength of 300 to 400 nm from the fluorescent lamp 8. The air that has come into contact with the sample 7 is exhausted from the exhaust port 12. A certain amount of air contacting the sample 7 is discharged from the exhaust port 12 in the middle of the passage by the air pump 10, and the concentration change of nitrogen oxide is recorded by the chemiluminescence type nitrogen oxide meter 9. Discharge from mouth 11. Table 2 shows the results of the measurement thus performed. The removal rate of 40% or more was evaluated as ◯, and the following was evaluated as x.
【００２６】[0026]
【表２】 [Table 2]
【００２７】尚、表２に示す塗膜状況（二酸化チタン等
の欠落の有無）はＪＩＳ−Ｋ−５４００の試験方法で測
定した。即ち、セロファン粘着テープ（幅１８ｍｍまた
は２４ｍｍ、粘着力２．９４Ｎ／１０ｍｍ以上）を接着
部分約５０ｍｍとなるようにして試料表面に貼り付けた
上から消しゴムでこすって密着させる。貼り付けた後、
２分後にテープの一端を持って試料表面に垂直に瞬間的
に剥がす。このとき、剥がしたセロファン粘着テープに
二酸化チタン（白色）、活性炭（黒色）の粒子が付着し
てないと○、付着していると×とした。The coating film conditions (presence or absence of titanium dioxide etc.) shown in Table 2 were measured by the test method of JIS-K-5400. That is, a cellophane adhesive tape (width: 18 mm or 24 mm, adhesive strength: 2.94 N / 10 mm or more) was attached to the surface of the sample so as to have an adhesive portion of about 50 mm, and then rubbed with an eraser to be in close contact. After pasting
After 2 minutes, hold one end of the tape and peel it off perpendicularly to the sample surface. At this time, particles of titanium dioxide (white) and activated carbon (black) were not adhered to the peeled cellophane adhesive tape, and ◯ was given, and x was attached.
【００２８】このテストの結果から判明するように、酸
化チタン粉末と活性炭粉末を含有する実施例では良好な
結果が得られたが、酸化チタン粉末と活性炭粉末を含有
しない比較例では窒素酸化物等を除去する能力が全くな
い。又、フッ素樹脂粉末が酸化チタン粉末や活性炭粉末
に比較して少ない実施例９、１０では、窒素酸化物等を
酸化する能力は大きいが、塗膜の接着が悪いことが判
る。As can be seen from the results of this test, good results were obtained in the examples containing titanium oxide powder and activated carbon powder, but nitrogen oxides etc. were obtained in the comparative examples not containing titanium oxide powder and activated carbon powder. There is no ability to remove. Further, in Examples 9 and 10 in which the amount of the fluororesin powder was smaller than that of the titanium oxide powder or the activated carbon powder, it was found that the adhesion of the coating film was poor although the ability to oxidize nitrogen oxides was large.
【００２９】[0029]
【発明の効果】以上詳述したように、請求項１〜５記載
の発明の塗装体では、基材の表面に二酸化チタン粉末と
活性炭粉末とからなる組成物を含有する塗膜が設けられ
ているから、この塗膜の表面に太陽光線が直接または間
接に照射すると、大気中の低濃度の窒素酸化物や硫黄酸
化物や一酸化炭素が酸化して減少する。このように、塗
装体、特に、屋外の塗装体では、太陽光線によって自然
に窒素酸化物が減少するので、運転コストが全く不要で
便利である。従って、従来のように、高価な装置が必要
なく、又、エネルギーを消費することがない。As described in detail above, in the coated article of the invention described in claims 1 to 5, a coating film containing a composition comprising titanium dioxide powder and activated carbon powder is provided on the surface of the substrate. Therefore, when the surface of this coating film is directly or indirectly irradiated with sunlight, low concentrations of nitrogen oxides, sulfur oxides and carbon monoxide in the atmosphere are oxidized and reduced. As described above, in a coated body, particularly in an outdoor coated body, since the amount of nitrogen oxides is naturally reduced by the sun rays, no operating cost is required and it is convenient. Therefore, unlike the prior art, an expensive device is not required and energy is not consumed.
【００３０】従って、屋外の建築物の塗装体に本発明の
塗装体を使用すると、自然に、大気中の窒素酸化物等が
減少するので、極めて有効である。特に、道路や道路周
辺部に設けられている道路標識、ガードレール等に本発
明の塗装体を使用すると、道路を走行している車両から
発生する窒素酸化物等が、大規模な装置が不要で、エネ
ルギーを使用することなく、自然に減少するので、極め
て便利である。Therefore, the use of the coated body of the present invention as a coated body of an outdoor building naturally reduces nitrogen oxides in the atmosphere, which is extremely effective. In particular, when the coated body of the present invention is used for road signs, guardrails and the like provided on roads and road peripherals, nitrogen oxides and the like generated from vehicles running on the road do not require a large-scale device. It is extremely convenient because it naturally decreases without using energy.
【００３１】又、請求項２〜５記載の発明では、二酸化
チタン粉末と活性炭粉末の他に鉄化合物粉末が含有され
ているから、二酸化チタンと活性炭の作用が増幅されて
効果が更に大きくなる。又、請求項４、５記載の発明で
は、合成樹脂を主成分とする塗膜が設けられているか
ら、二酸化チタン粉末と活性炭粉末や鉄化合物粉末を基
材表面に強固に付着させ易いし、二酸化チタンや活性炭
や鉄化合物の作用で生じた酸性物に対する抵抗が大きい
ので、塗膜が劣化せず長期間使用できるので便利であ
る。Further, in the inventions of claims 2 to 5, since the iron compound powder is contained in addition to the titanium dioxide powder and the activated carbon powder, the effects of the titanium dioxide and the activated carbon are amplified and the effect is further enhanced. Further, in the inventions according to claims 4 and 5, since a coating film containing a synthetic resin as a main component is provided, it is easy to firmly attach the titanium dioxide powder and the activated carbon powder or the iron compound powder to the substrate surface, Since it has a high resistance to acidic substances generated by the action of titanium dioxide, activated carbon and iron compounds, it is convenient because the coating film can be used for a long time without deterioration.
【００３２】又、請求項３、５記載の発明では、機材の
表面に耐酸性膜が設けられているから、二酸化チタン粉
末と活性炭粉末や鉄化合物粉末の作用で生じた酸性物が
基材の表面を腐食させることがなく、基材が長期間使用
できるので便利である。又、請求項６、７記載の発明で
は、二酸化チタン粉末と活性炭粉末や鉄化合物粉末を合
成樹脂粉末とからなる混合物を静電塗装で付着させた
後、加熱炉で加熱して合成樹脂を溶融させて基材の表面
に塗膜を形成させるから、塗膜の表面に二酸化チタン粉
末や活性炭粉末や鉄化合物粉末が露出し、これ等の触媒
作用が妨害されないので好適である。Further, in the inventions according to claims 3 and 5, since the acid resistant film is provided on the surface of the equipment, the acidic substance generated by the action of the titanium dioxide powder and the activated carbon powder or the iron compound powder is the base material. This is convenient because the base material can be used for a long period of time without corroding the surface. Further, in the inventions according to claims 6 and 7, a mixture of titanium dioxide powder and activated carbon powder or iron compound powder and synthetic resin powder is applied by electrostatic coating and then heated in a heating furnace to melt the synthetic resin. Since the coating film is formed on the surface of the base material by doing so, the titanium dioxide powder, the activated carbon powder and the iron compound powder are exposed on the surface of the coating film, and the catalytic action thereof is not disturbed, which is preferable.
【図１】本発明における実施例に使用する測定装置を示
す説明図である。FIG. 1 is an explanatory diagram showing a measuring device used in an example of the present invention.
１、２ 高圧容器 ４ 精密流量調節器 ６ 反応容器 ７ 試料 ９ 化学発光式窒素酸化物計 1, 2 High-pressure container 4 Precision flow controller 6 Reaction container 7 Sample 9 Chemiluminescence type nitrogen oxide meter
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｊ 21/18 ＺＡＢ Ａ 23/745 Ｂ０５Ｄ 1/04 Ｈ 7415−4Ｆ 3/02 Ｄ 7415−4Ｆ 7/24 ３０２ Ｅ 7415−4Ｆ ３０３ Ｂ 7415−4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location B01J 21/18 ZAB A 23/745 B05D 1/04 H 7415-4F 3/02 D 7415-4F 7 / 24 302 E 7415-4F 303 B 7415-4F
Claims (7)
粉末とからなる組成物を含有する塗膜が設けられている
ことを特徴とする塗装体。1. A coated article, characterized in that a coating film containing a composition comprising titanium dioxide powder and activated carbon powder is provided on the surface of a substrate.
粉末と鉄化合物粉末とからなる組成物を含有する塗膜が
設けられていることを特徴とする塗装体。2. A coated body, comprising a coating film containing a composition comprising titanium dioxide powder, activated carbon powder and iron compound powder on the surface of a substrate.
上に請求項１または２記載の組成物を含有する塗膜が設
けられていることを特徴とする塗装体。3. A coated body, wherein a coating film containing the composition according to claim 1 is provided on an acid-resistant film provided on the surface of a base material.
成物を含有する合成樹脂を主成分とする塗膜が設けられ
ていることを特徴とする塗装体。4. A coated body, wherein a coating film containing a synthetic resin containing the composition according to claim 1 as a main component is provided on the surface of a base material.
上に請求項１または２記載の組成物を含有する合成樹脂
を主成分とする塗膜が設けられていることを特徴とする
塗装体。5. A coating film containing a synthetic resin containing the composition according to claim 1 as a main component is provided on the acid-resistant film provided on the surface of the substrate. Painted body.
脂粉末とからなる混合物を静電塗装で基材に付着させた
後、加熱炉で加熱して合成樹脂を溶融させて基材の表面
に塗膜を形成させることを特徴とする塗装体の製造方
法。6. A mixture of the composition according to claim 1 or 2 and a synthetic resin powder is adhered to a substrate by electrostatic coating and then heated in a heating furnace to melt the synthetic resin to form a substrate. A method for producing a coated body, which comprises forming a coating film on the surface.
上に請求項１または２記載の組成物と合成樹脂粉末とか
らなる混合物を静電塗装で付着させた後、加熱炉で加熱
して合成樹脂を溶融させて基材の表面に塗膜を形成させ
ることを特徴とする塗装体の製造方法。7. A mixture of the composition according to claim 1 and a synthetic resin powder is electrostatically applied onto an acid-resistant film provided on the surface of a substrate, and then the mixture is heated in a heating furnace. A method for producing a coated body, which comprises heating to melt a synthetic resin to form a coating film on the surface of a substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6258145A JPH08117683A (en) | 1994-10-24 | 1994-10-24 | Coated body and production of coated body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6258145A JPH08117683A (en) | 1994-10-24 | 1994-10-24 | Coated body and production of coated body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08117683A true JPH08117683A (en) | 1996-05-14 |
Family
ID=17316153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6258145A Pending JPH08117683A (en) | 1994-10-24 | 1994-10-24 | Coated body and production of coated body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08117683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09225385A (en) * | 1995-07-08 | 1997-09-02 | Toto Ltd | Railway car and coating method therefor |
-
1994
- 1994-10-24 JP JP6258145A patent/JPH08117683A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09225385A (en) * | 1995-07-08 | 1997-09-02 | Toto Ltd | Railway car and coating method therefor |
| JPH09225392A (en) * | 1995-07-08 | 1997-09-02 | Toto Ltd | Automobile and coating method therefor |
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