JPWO2015133316A1 - 光触媒塗工液及びそれを用いた光触媒フィルム - Google Patents
光触媒塗工液及びそれを用いた光触媒フィルム Download PDFInfo
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- JPWO2015133316A1 JPWO2015133316A1 JP2015512432A JP2015512432A JPWO2015133316A1 JP WO2015133316 A1 JPWO2015133316 A1 JP WO2015133316A1 JP 2015512432 A JP2015512432 A JP 2015512432A JP 2015512432 A JP2015512432 A JP 2015512432A JP WO2015133316 A1 JPWO2015133316 A1 JP WO2015133316A1
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- photocatalyst
- film
- coating liquid
- resin
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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Abstract
Description
ナノオーダーサイズの光触媒粒子と、
前記光触媒粒子を含む溶媒中で当該光触媒粒子との間で相互に反発しあうゼータ電位が−30mV〜−70mVの負帯電物質と、
未硬化状態の樹脂と、
を含む。
本実施形態の光触媒塗工液を組成する「光触媒含有体」とは、それ自体が光触媒作用を有する化合物をいい、また、それのみならず、所要の行程を経ることで光触媒に転換しうる光触媒前駆体を含むものをいう。
つぎに、本実施形態の光触媒塗工液を組成する樹脂について説明する。本実施形態に係る樹脂は、光触媒フィルムを製造したときに、透光性がある仕上がりとなるようにする、好ましくは、透明性が高い仕上がりとなるようにすると、光触媒フィルムの用途が限定されないという点で利点がある。
本実施形態では、負帯電物質として、例えば、シリカ粒子が水又は有機溶媒中にコロイド状に分散されたコロイダルシリカ、珪酸ソーダ(例えば高モル珪酸ソーダ)、シリカ化合物(例えば、ケイ酸アンモニウム)など、シリカを含むものを用いることができる。なお、負帯電物質は、光触媒塗工液の塗工面とのバインダーとしても機能するものを用いるとよい。こうすると、光触媒塗工液を用いて製造した光触媒フィルムを、その貼付対象に貼付する場合に、光触媒塗工液の塗工面との間に接着層などを形成する必要がなくなるという利点がある。本実施形態の負帯電物質は、ゼータ電位(界面動電電位)が−30mV〜−70mV程度のものを用いている。
既述のように各々製造した光触媒含有体と樹脂と負帯電物質とを混合する。具体的には、まず、光触媒含有体を例えば100rpm〜700rpm程度の回転数で撹拌しながら、ここに負帯電物質を投入する。ここでは、光触媒含有体:負帯電物質が、光触媒フィルムを製造した場合において、例えば15wt%:55wt%の割合となるように投入する。
本実施形態の光触媒塗工液は、各種基材表面に塗工し、硬化させることで高い親水性を有する光触媒塗膜を形成することが可能である。基材は、光触媒塗膜を形成することができる限り、特に限定されるものではない。基材の材料としては、例えば、木、紙を含む有機材料、金属を含む無機材料、及び、これらの混合物或いは化合物など様々なものが挙げられる。
つぎに、本実施形態の光触媒フィルムを製造する方法について説明する。本実施形態の光触媒フィルムは、まず、その厚さが例えば0.1μm〜100μm、好ましくは0.1μm〜50μm、より好ましくは0.1μm〜5.0μmの範囲となる条件で、光触媒塗工液をフィルム製造装置台に塗布する。
光触媒塗工液の組成物として、
光触媒含有体:既述の鯤コーポレーション株式会社製のサガンコートTPX−HL、
樹脂:水系ウレタン樹脂として大成ファインケミカル株式会社製WBR、
シリカ粒子:本出願人らの一である東曹産業株式会社製のハイパーグラスN、
を用意した。そして、これらの光触媒含有体:樹脂:シリカ粒子を、大凡15wt%:30wt%:55wt%となる割合で混合し、既述の撹拌工程を経て光触媒塗工液を製造した。なお、本明細書で示す割合は、明示した数値の±10%程度までの割合を含むものとする。
(実施例2)
光触媒塗工液の組成物として、実施例1の場合と同じものを用意し、これらの光触媒含有体:樹脂:シリカ粒子を、大凡10wt%:50wt%:40wt%となる割合で混合し、既述の撹拌工程を経て光触媒塗工液を製造した。
光触媒塗工液の組成物として、実施例1の場合と同じものを用意し、これらの光触媒含有体:樹脂:シリカ粒子を、大凡35wt%:5wt%:60wt%となる割合で混合し、既述の撹拌工程を経て光触媒塗工液を製造した。
光触媒塗工液の組成物として、実施例1の場合と同じものを用意し、これらの光触媒含有体:樹脂:シリカ粒子を、大凡15wt%:20wt%:65wt%となる割合で混合し、既述の撹拌工程を経て光触媒塗工液を製造した。
光触媒塗工液の組成物として、樹脂及びシリカ粒子については実施例1の場合と同じものを用意し、光触媒含有体としては石原産業株式会社製のチタニアゾルSTS−01(製品名)を用意し、これら光触媒含有体:樹脂:シリカ粒子を、実施例1と同じく、大凡15wt%:30wt%:55wt%となる割合で混合し、既述の撹拌工程を経て光触媒塗工液を製造した。
光触媒塗工液の組成物として、光触媒含有体及び樹脂については実施例1の場合と同じものを用意し、シリカ粒子としては日産化学株式会社製のスノーテックスXSを用意し、これら光触媒含有体:樹脂:シリカ粒子を、実施例1と同じく、大凡15wt%:30wt%:55wt%となる割合で混合し、既述の撹拌工程を経て光触媒塗工液を製造した。なお、スノーテックスXSは、pHが9.5〜10程度であり、ゼータ電位が−23mV〜−35mV程度である。
2.外観の見た目の評価(○/△/×の3段階別評価)
3.透明性:HAZE METER NDH4000を用いてJIS−K7105に準じてHAZE値を測定
4.密着性:JIS K5400 5−6に準じた密着性評価
5.表面粗さ:表面粗さ計を用いて表面粗さを測定
6.硬度:JIS K5600 5−4に準じた鉛筆引っかき硬度評価
7.分解活性:JIS R1703に準じた分解活性評価
8.全光線透過率:HAZE METER NDH4000を用いてJIS−K7105に準じて全光線透過率を測定
実施例1:5点+5点+5点=15点
実施例2:5点+3点+5点=13点
実施例3:3点+5点+5点=13点
実施例4:5点+5点+5点=15点
比較例1:1点+1点+1点=3点
比較例2:1点+1点+1点=3点
という結果になる。
Claims (8)
- ナノオーダーサイズの光触媒粒子と、
前記光触媒粒子を含む溶媒中で当該光触媒粒子との間で相互に反発しあうゼータ電位が−30mV〜−70mVの負帯電物質と、
未硬化状態の樹脂と、
を含む光触媒塗工液。 - 前記光触媒粒子は光触媒塗工液を用いて製造した光触媒フィルムに対して3wt%〜70wt%、
前記負帯電物質は光触媒塗工液を用いて製造した光触媒フィルムに対して19wt%〜80wt%、
前記樹脂は光触媒塗工液を用いて製造した光触媒フィルムに対して3wt%〜60wt%の中から選択される請求項1記載の光触媒塗工液。 - 前記負帯電物質は、pHが7以上9以下である、請求項1記載の光触媒塗工液。
- 前記負帯電物質は、平均1次粒子径で1nm以上、かつ、平均2次粒子径で4000nm以下の範囲である、請求項1記載の光触媒塗工液。
- 前記負帯電物質は、シリカを含む、請求項1記載の光触媒塗工液。
- 前記樹脂は、アクリル樹脂、シリコン樹脂、シリコーン樹脂、ウレタン樹脂のいずれかを含む、請求項1記載の光触媒塗工液。
- 前記光触媒粒子は、扁平形状の結晶粒子と、それに比較して厚みがある立体形状の結晶粒子とが結合した光触媒粒子である、請求項1記載の光触媒塗工液。
- 請求項1記載の光触媒塗工液を硬化させた、光触媒フィルム。
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JP2003206434A (ja) * | 2002-01-11 | 2003-07-22 | Asia Kogyo Kk | 透湿性を有する水性無機塗料組成物 |
JP2004143452A (ja) * | 2002-09-30 | 2004-05-20 | Toto Ltd | 自己浄化性水性塗料組成物、及び自己浄化性部材 |
WO2005102521A1 (ja) * | 2004-04-20 | 2005-11-03 | Sumitomo Metal Industries, Ltd. | 酸化チタン系光触媒とその製造方法、およびその利用 |
JP2008120961A (ja) * | 2006-11-15 | 2008-05-29 | Nitto Boseki Co Ltd | 光触媒を含有するコーティング剤 |
JP2012233051A (ja) * | 2011-04-28 | 2012-11-29 | Asahi Kasei Chemicals Corp | 塗料組成物 |
JP2013169493A (ja) * | 2012-02-20 | 2013-09-02 | Pioneer Electronic Corp | 光触媒部材、光触媒部材の製造方法および光学装置 |
Also Published As
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KR20170016317A (ko) | 2017-02-13 |
WO2015133316A1 (ja) | 2015-09-11 |
JP2017042683A (ja) | 2017-03-02 |
TW201610043A (zh) | 2016-03-16 |
CN106133078A (zh) | 2016-11-16 |
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