JP3499471B2 - Photocatalyst-coated composite members with excellent scratch resistance - Google Patents
Photocatalyst-coated composite members with excellent scratch resistanceInfo
- Publication number
- JP3499471B2 JP3499471B2 JP23701299A JP23701299A JP3499471B2 JP 3499471 B2 JP3499471 B2 JP 3499471B2 JP 23701299 A JP23701299 A JP 23701299A JP 23701299 A JP23701299 A JP 23701299A JP 3499471 B2 JP3499471 B2 JP 3499471B2
- Authority
- JP
- Japan
- Prior art keywords
- photocatalyst
- coating film
- coated composite
- scratch resistance
- composite member
- 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.)
- Expired - Fee Related
Links
- 239000011941 photocatalyst Substances 0.000 title claims description 45
- 239000002131 composite material Substances 0.000 title claims description 22
- 239000011248 coating agent Substances 0.000 claims description 37
- 238000000576 coating method Methods 0.000 claims description 37
- -1 Polytetrafluoroethylene Polymers 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 18
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 239000004567 concrete Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims 1
- 229910052602 gypsum Inorganic materials 0.000 claims 1
- 239000010440 gypsum Substances 0.000 claims 1
- 239000002987 primer (paints) Substances 0.000 description 12
- 239000010410 layer Substances 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 8
- 239000003973 paint Substances 0.000 description 8
- 229910010413 TiO 2 Inorganic materials 0.000 description 7
- 239000002585 base Substances 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 230000001699 photocatalysis Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 239000008119 colloidal silica Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000007590 electrostatic spraying Methods 0.000 description 3
- 125000001153 fluoro group Chemical group F* 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 240000008415 Lactuca sativa Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000012045 salad Nutrition 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐傷付き性を改善した
光触媒塗膜が形成されている複合部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite member having a photocatalytic coating film having improved scratch resistance.
【０００２】[0002]
【従来の技術】ＴｉＯ2 を始めとする光触媒は、光照射
で活性化し、有機物，ＮＯｘ，ＳＯｘ等を分解する作用
を呈する。この作用を活用し、ＴｉＯ2 粒子を配合した
塗膜を基材表面に設けることにより、塗装鋼板に光触媒
活性を付与することが検討されている。光触媒活性が付
与された鋼板等の複合部材は、大都市周辺等の煤煙，排
気ガス等による大気汚染に起因した表面汚れを分解し、
長期間に渡って美観を保持する。この種の光触媒被覆複
合部材で、光触媒を分散させる塗膜にバインダーとして
有機物を使用すると、光触媒反応で生成した活性酸素
（Ｏ2 -，ＯＨ等）で有機塗膜が分解され、チョーキング
による塗膜剥離が懸念される。そのため、ベース樹脂と
して、シリカ系等の無機系材料が一般的に使用されてい
る（特開平７―１１３２７２号公報，ＷＯ９６／２９３
７５等参照）。 2. Description of the Related Art Photocatalysts such as TiO 2 are activated by light irradiation and have a function of decomposing organic substances, NOx, SOx and the like. Utilizing this effect, it has been studied to provide a coated steel sheet with photocatalytic activity by providing a coating film containing TiO 2 particles on the surface of the substrate. Composite members such as steel plates with photocatalytic activity decompose surface stains caused by air pollution due to soot, exhaust gas, etc. around large cities,
Maintains aesthetics over a long period of time. Photocatalytic coating composite member of this type, the use of organic matter as a binder in coating to disperse the photocatalyst, the photocatalyst produced active oxygen in the reaction (O 2 -, OH, etc.) are organic film-decomposition, the coating film formed from chalking There is concern about peeling. Therefore, an inorganic material such as silica is generally used as the base resin (Japanese Patent Application Laid-Open No. 7-113272, WO96 / 293).
75 etc.).
【０００３】[0003]
【発明が解決しようとする課題】無機系材料をバインダ
ーとした光触媒塗膜をもつ複合部材は、建材等に使用さ
れ、長期間光照射を受けてもチョーキングが起こらず、
長期間美観を保持する反面、硬くて脆性をもつため、傷
がつきやすい。そのため、施工時にパネルや工具を接触
させたり、施工後でも小石等の固いものが衝突して塗膜
が欠けたり剥離するという問題がある。本発明は、この
ような問題を解消すべく案出されたものであり、光触媒
被覆複合部材の無機系バインダーを用いた光触媒塗膜
に、潤滑効果・緩衝効果をもつポリ四フッ化エチレン粉
末を分散させることにより耐傷付き性を付与することを
目的とする。A composite member having a photocatalytic coating film using an inorganic material as a binder is used as a building material, etc., and does not cause chalking even when exposed to light for a long period of time.
While maintaining a beautiful appearance for a long time, it is hard and brittle, so it is easily scratched. Therefore, there is a problem that a panel or a tool is brought into contact during the construction, or a hard object such as a small stone collides with the construction even after the construction to chip or peel the coating film. The present invention has been devised to solve such problems, and a photocatalyst coating film using an inorganic binder of a photocatalyst-coated composite member is provided with polytetrafluoroethylene powder having a lubricating effect and a buffering effect. The purpose is to impart scratch resistance by dispersing.
【０００４】[0004]
【課題を解決するための手段】本発明の光触媒被覆複合
部材は、その目的を達成するため、シリカ系又はアルミ
ナ系バインダーに光触媒粒子を１０〜５０重量％，粒径
０.１〜１０μｍのポリ四フッ化エチレン粉末を０.５〜
２０重量％分散させた無機塗膜が基材表面に形成されて
いることを特徴とする。基材としては、金属，ガラス，
タイル，合成樹脂，パーティクルボード，石膏，コンク
リート等の板が用いられる。In order to achieve the object, the photocatalyst-coated composite member of the present invention comprises a silica or alumina binder containing 10 to 50% by weight of photocatalyst particles and a particle size of 0.1 to 10 μm. 0.5% tetrafluoroethylene powder
An inorganic coating film having 20% by weight dispersed therein is formed on the surface of the substrate. As the base material, metal, glass,
Plates such as tiles, synthetic resins, particle boards, plaster, and concrete are used.
【０００５】[0005]
【作用】ポリ四フッ化エチレンは炭素鎖の周りをフッ素
原子のみで囲む構造をもっており、有機化合物の中では
炭素とフッ素の結合力が最も大きく、炭素同士の結合力
も周囲のフッ素原子の作用によって通常の有機化合物よ
りも強いため、化学的に非常に安定な物質である。さら
に、炭素原子の周囲を囲むフッ素原子は極めて表面自由
エネルギーの低い面を構成するため、材料表面の摩擦係
数が低く、潤滑性をもつ。シリカ系又はアルミナ系のバ
インダーを用いた光触媒塗膜に、ポリ四フッ化エチレン
の粉末を分散させると、ポリ四フッ化エチレン特有の潤
滑性に加えて、粒子が軟質であるため応力分散効果も発
現し、外力に対して緩衝材としても働くことから耐傷付
き性の高い塗膜となる。さらに、ポリ四フッ化エチレン
は、光触媒の作用を受けても安定な事から、長期間光照
射されても変質しにくい。この点、天然ろう，パラフィ
ン，ポリエチレン等の材料を分散させた場合、化学的に
不安定なため、長期間光照射されると光触媒の作用で分
解され、ＣＯ2 ，Ｈ2 Ｏ，低分子炭化水素等となり、変
質・減量してしまう。[Function] Polytetrafluoroethylene has a structure in which the carbon chain is surrounded only by fluorine atoms. Among organic compounds, the binding force between carbon and fluorine is the largest, and the binding force between carbons also depends on the action of the surrounding fluorine atoms. Since it is stronger than ordinary organic compounds, it is a chemically very stable substance. Furthermore, since the fluorine atoms surrounding the carbon atoms form a surface with extremely low surface free energy, the material surface has a low coefficient of friction and lubricity. When polytetrafluoroethylene powder is dispersed in a photocatalyst coating film using a silica-based or alumina-based binder, in addition to the lubricity unique to polytetrafluoroethylene, the particles are soft, so there is also a stress dispersion effect. It develops and also acts as a cushioning material against external force, resulting in a coating film with high scratch resistance. Further, since polytetrafluoroethylene is stable even under the action of a photocatalyst, it is unlikely to deteriorate even if it is irradiated with light for a long time. In this respect, when materials such as natural wax, paraffin, and polyethylene are dispersed, they are chemically unstable, so that they are decomposed by the action of a photocatalyst when exposed to light for a long period of time, resulting in CO 2 , H 2 O, low-molecular carbonization. It becomes hydrogen, etc., and is altered / reduced in weight.
【０００６】[0006]
【実施の形態】本発明の光触媒被覆複合部材は、図１に
示すように基材１として例えば金属，ガラス，タイル，
合成樹脂，パーティクルボード，石膏，コンクリート等
の板が用いられる。処理された基材１の表面に、塗膜密
着性の向上や隠蔽性付与のため、図１（ａ）のようにプ
ライマー層２が形成され、その上に光触媒塗膜３が形成
される。基材１が金属製等の無機質の場合には光触媒塗
膜３の影響を受けにくいため、図１（ｂ）のようにプラ
イマー層２を適宜省略できる。光触媒塗膜３は、例えば
シリカゾルに光触媒粉末とポリ四フッ化エチレン粉末４
を分散させた塗料が静電吹付け法等で塗布され、焼付け
られる。シリカ系やアルミナ系のバインダーでは、４０
０℃以下の比較的低温で焼付けが出来る。BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a photocatalyst-coated composite member of the present invention has a substrate 1 made of metal, glass, tile
Plates made of synthetic resin, particle board, plaster, concrete, etc. are used. On the surface of the treated substrate 1, a primer layer 2 is formed as shown in FIG. 1 (a), and a photocatalyst coating 3 is formed on the primer layer 2 in order to improve the adhesion of the coating film and impart the hiding property. When the base material 1 is made of an inorganic material such as a metal, the photocatalyst coating film 3 is less likely to be affected, so that the primer layer 2 can be appropriately omitted as shown in FIG. The photocatalyst coating film 3 includes, for example, silica sol, photocatalyst powder and polytetrafluoroethylene powder 4
The paint in which is dispersed is applied by an electrostatic spraying method or the like and baked. 40 for silica-based and alumina-based binders
Baking can be performed at a relatively low temperature of 0 ° C or less.
【０００７】光触媒物質としては、ＴｉＯ2 ，ＺｎＯ，
ＺｒＯ2 ，ＷＯ3 ，Ｆｅ2 Ｏ3 ，ＦｅＴｉＯ3 ，ＳｒＴ
ｉＯ3 から選ばれた１種又は２種以上が使用される。な
かでも、化学的に安定であり、安価でしかも活性度の高
い微粒子（粒径：５〜２００ｎｍ）が得られることから
アナターゼ型のＴｉＯ2 が好ましい。粒径は小さいほど
活性度が高くなるが、小さすぎても塗料への分散が難し
くなる。ポリ四フッ化エチレン粉末の含有量は、光触媒
活性を阻害しないように、０．５〜２０重量％程度に調
整される。ポリ四フッ化エチレン粉末の粒径は小さいほ
ど効果的であるが、塗料への分散性，製造の容易性，塗
膜の表面外観等を考慮して０．１〜１０μｍ程度が採用
される。塗膜の表面外観は、ポリ四フッ化エチレン粉末
の粒径が大きいと艶消し調となり、粒径が小さいと高光
沢となる。Photocatalyst substances include TiO 2 , ZnO,
ZrO 2 , WO 3 , Fe 2 O 3 , FeTiO 3 , SrT
One or more selected from iO 3 are used. Among them, anatase type TiO 2 is preferable because it is chemically stable, inexpensive, and highly active fine particles (particle diameter: 5 to 200 nm) can be obtained. The smaller the particle size, the higher the activity, but if it is too small, it becomes difficult to disperse it in the paint. The content of the polytetrafluoroethylene powder is adjusted to about 0.5 to 20% by weight so as not to impair the photocatalytic activity. The smaller the particle size of the polytetrafluoroethylene powder is, the more effective it is. However, in consideration of dispersibility in a paint, ease of production, surface appearance of a coating film, etc., about 0.1 to 10 μm is adopted. The surface appearance of the coating film becomes matte when the particle size of the polytetrafluoroethylene powder is large, and becomes high gloss when the particle size is small.
【０００８】[0008]
【実施例】次に示すように、本発明に基づいた実施例１
〜３と、本発明の製造条件を満たさない比較例１〜３に
従って、光触媒被覆複合部材を製造して塗膜の油分解
率，耐傷付き性を評価した。
実施例１：プライマー塗料として、コロイダルシリカと
メチルトリメトキシシリケートをブチルセロソルブ−イ
ソプロパノール混合溶媒に溶解し、水を加えて加水分解
を進行させたシリカゾルに白色顔料であるＺｒＯ2 処理
ＴｉＯ2 （ルチル型）粉末を分散させた塗料を調製し
た。光触媒塗料としては、コロイダルシリカとメチルト
リメトキシシリケートをブチルセロソルブ−イソプロパ
ノール混合溶媒に溶解し、水を加えて加水分解を進行さ
せたシリカゾルに、粒径２０ｎｍのアナターゼ型ＴｉＯ
2 粉末と種々の粒径のポリ四フッ化エチレン粉末を分散
させた塗料を調製して、ポリ四フッ化エチレンの粒径の
影響を調べた。EXAMPLE As shown below, Example 1 according to the present invention
3 to 3 and Comparative Examples 1 to 3 not satisfying the manufacturing conditions of the present invention, photocatalyst-coated composite members were manufactured, and the oil decomposition rate and scratch resistance of the coating film were evaluated. Example 1 As a primer coating, colloidal silica and methyltrimethoxysilicate were dissolved in a butyl cellosolve-isopropanol mixed solvent, and water was added to the silica sol to promote hydrolysis, and ZrO 2 treated TiO 2 (rutile type) as a white pigment was used. A paint in which powder was dispersed was prepared. As the photocatalyst paint, colloidal silica and methyltrimethoxysilicate are dissolved in a butyl cellosolve-isopropanol mixed solvent, and water is added to the silica sol to promote hydrolysis, and anatase-type TiO 2 having a particle size of 20 nm is added.
A paint in which two powders and polytetrafluoroethylene powder of various particle sizes were dispersed was prepared, and the effect of the particle size of polytetrafluoroethylene was investigated.
【０００９】基材とするステンレス鋼板（ＳＵＳ３０
４，板厚０．８ｍｍ）にアルカリ脱脂処理及びクロメー
ト処理を施した後、水洗・乾燥した。まずプライマー塗
料を静電吹付け法で塗布し、１４０℃，２０分で焼き付
け、膜厚２０μｍのプライマー層を形成した。さらに、
光触媒塗料を静電吹付け法で塗布し、２００℃，２０分
の焼付けで光触媒塗膜を形成し、光触媒被覆複合部材を
製造した。これらの成分及び評価結果は、表１の試験番
号１〜１８に示す。
実施例２：プライマー塗料及び光触媒塗料の成分、コロ
イダルシリカとメチルトリメトキシシリケートをコロイ
ダルアルミナに替え、アナターゼ型ＴｉＯ2 粉末の粒径
２０ｎｍを７ｎｍとした以外は実施例１と同様にして、
光触媒被覆複合部材を製造した。これらの成分及び評価
結果は、表２の試験番号１〜１８に示す。A stainless steel plate (SUS30 as a base material)
4, a plate thickness of 0.8 mm) was subjected to alkali degreasing treatment and chromate treatment, then washed with water and dried. First, a primer coating was applied by electrostatic spraying and baked at 140 ° C. for 20 minutes to form a primer layer having a film thickness of 20 μm. further,
A photocatalyst coating material was applied by an electrostatic spraying method, and a photocatalyst coating film was formed by baking at 200 ° C. for 20 minutes to manufacture a photocatalyst-coated composite member. These components and evaluation results are shown in test numbers 1 to 18 in Table 1. Example 2: In the same manner as in Example 1 except that the components of the primer coating and the photocatalyst coating, colloidal silica and methyltrimethoxysilicate were replaced by colloidal alumina, and the particle size 20 nm of the anatase TiO 2 powder was 7 nm.
A photocatalyst-coated composite member was manufactured. These components and evaluation results are shown in test numbers 1 to 18 in Table 2.
【００１０】実施例３：基材にポリカーボネート板を用
い、実施例２と同様にプライマー層，光触媒塗膜を形成
し、光触媒被覆複合部材を製造した。成分及び評価結果
は、表２の試験番号１９〜２１に示す。これらの実施例
１〜３で製造された光触媒被覆複合部材に形成された塗
膜は、何れも基材及び各層間での密着性が優れており、
部材の面内で均一な膜厚，緻密な組織をもっていた。ま
た、サンシャインウェザー試験の結果、１０００時間後
においても塗膜にチョーキングは発生せず、安定であっ
た。Example 3: Using a polycarbonate plate as a substrate, a primer layer and a photocatalyst coating film were formed in the same manner as in Example 2 to produce a photocatalyst-coated composite member. The components and evaluation results are shown in test numbers 19 to 21 in Table 2. The coating films formed on the photocatalyst-coated composite members produced in these Examples 1 to 3 have excellent adhesion between the base material and each layer,
It had a uniform film thickness and a dense structure in the plane of the member. Further, as a result of the sunshine weather test, even after 1000 hours, the coating film was stable with no occurrence of chalking.
【００１１】比較例１：ポリ四フッ化エチレン粉末を加
えないで光触媒塗料を調製した以外は、実施例１と同様
にプライマー層，光触媒塗膜を形成し、光触媒被覆複合
部材を製造した。これらの成分及び評価結果は、表１の
試験番号１９〜２０に対応する。
比較例２：ポリ四フッ化エチレン粉末を加えないで光触
媒塗料を調製した以外は、実施例２と同様にプライマー
層，光触媒塗膜を形成し、光触媒被覆複合部材を製造し
た。成分及び評価結果は、表２の試験番号２２〜２３に
対応する。Comparative Example 1: A photocatalyst-coated composite member was manufactured by forming a primer layer and a photocatalyst coating film in the same manner as in Example 1 except that the photocatalyst paint was prepared without adding the polytetrafluoroethylene powder. These components and the evaluation results correspond to the test numbers 19 to 20 in Table 1. Comparative Example 2: A photocatalyst coating composite member was manufactured by forming a primer layer and a photocatalyst coating film in the same manner as in Example 2 except that the photocatalyst paint was prepared without adding the polytetrafluoroethylene powder. The components and the evaluation results correspond to the test numbers 22 to 23 in Table 2.
【００１２】比較例３：ポリ四フッ化エチレン粉末に替
えてポリエチレンワックスを加えて光触媒塗料を調製し
た以外は、実施例２と同様にプライマー層，光触媒塗膜
を形成し、光触媒被覆複合部材を製造した。成分及び評
価結果は、表２の試験番号２４〜２５に示す。さらに、
サンシャインウェザー試験の結果、１０００時間後に塗
膜にチョーキングが発生し、塗膜剥離が観察された。表
１及び表２に示す結果から、本発明に従った光触媒被覆
複合部材は、油分解率，耐傷付き性に関して総合的に良
好な結果であることがわかる。なお、油分解率及び耐傷
付き性は次のような要領で行なった。
油分解率：試験片にサラダ油を０．２ｍｇ／ｃｍ2 付着
させ、波長３６５ｎｍで３ｍＷ／ｃｍ2 の紫外線強度を
もつブラックライトを２４時間照射した後の重量変化か
ら油分解率を算出した。
耐傷付き性：
（１）コインスクラッチ試験：ギザギザのついていない
１０円硬貨で塗膜を強く引っかき、発生した引っかき跡
の幅から５段階評価した。評価５が最も良好な場合を示
す。
（２）クレメンス引っかき試験：１２５μｍφのダイヤ
モンドの先端をもつ引っかき針を用い、クレメンス型引
っかき塗膜硬度試験機にて行なった。試験荷重を５０ｇ
間隔で変化させ、傷がついた荷重を評価値とした。Comparative Example 3: A photocatalyst coating composite member was prepared by forming a primer layer and a photocatalyst coating film in the same manner as in Example 2 except that polyethylene wax was added instead of polytetrafluoroethylene powder to prepare a photocatalyst coating material. Manufactured. The components and evaluation results are shown in test numbers 24 to 25 in Table 2. further,
As a result of the sunshine weather test, choking occurred in the coating film after 1000 hours and peeling of the coating film was observed. From the results shown in Table 1 and Table 2, it can be seen that the photocatalyst-coated composite member according to the present invention is an overall good result in terms of oil decomposition rate and scratch resistance. The oil decomposition rate and scratch resistance were measured as follows. Oil decomposition rate: 0.2 mg / cm 2 of salad oil was attached to a test piece, and the oil decomposition rate was calculated from the weight change after irradiation with black light having a wavelength of 365 nm and an ultraviolet intensity of 3 mW / cm 2 for 24 hours. Scratch resistance: (1) Coin scratch test: The coating film was strongly scratched with a not-jagged 10-yen coin, and the scratch mark width was evaluated by 5 grades. The case where the evaluation 5 is the best is shown. (2) Clemens Scratch Test: A Clemens-type scratch coating film hardness tester was performed using a scratch needle having a 125 μmφ diamond tip. Test load 50g
The load with scratches was set as the evaluation value, which was changed at intervals.
【００１３】 [0013]
【００１４】 [0014]
【００１５】[0015]
【発明の効果】以上に説明したように、本発明の光触媒
被覆複合部材は、光触媒を塗膜層として固定するバイン
ダーにシリカ系又はアルミナ系を用い、塗膜層中にポリ
四フッ化エチレンの粉末を分散させている。そのため、
光触媒塗膜にチョーキングが発生せず、傷の付きにくい
光触媒被覆複合部材となる。As described above, in the photocatalyst-coated composite member of the present invention, a silica-based or alumina-based binder is used to fix the photocatalyst as a coating layer, and polytetrafluoroethylene of the coating layer is used. The powder is dispersed. for that reason,
The photocatalyst coating film does not cause choking and is a scratch-resistant photocatalyst-coated composite member.
【図１】 本発明の光触媒被覆複合部材の塗膜構造を説
明する図FIG. 1 is a diagram illustrating a coating film structure of a photocatalyst-coated composite member of the present invention.
１：基材 ２：プライマー層 ３：光触媒層
４：ポリ四フッ化エチレン粉末1: Base material 2: Primer layer 3: Photocatalyst layer
4: Polytetrafluoroethylene powder
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ０５Ｄ 7/24 ３０３ Ｂ０５Ｄ 7/24 ３０３Ｂ Ｂ３２Ｂ 27/30 Ｂ３２Ｂ 27/30 Ｄ Ｃ０９Ｄ 5/00 Ｃ０９Ｄ 5/00 Ｚ 7/12 7/12 (56)参考文献 特開 平10−163720（ＪＰ，Ａ) 特開 平11−29639（ＪＰ，Ａ) 特開 平10−88061（ＪＰ，Ａ) 特開2000−267575（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C09D 1/00 - 10/00 C09D 101/00 - 201/10 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI B05D 7/24 303 B05D 7/24 303B B32B 27/30 B32B 27/30 D C09D 5/00 C09D 5/00 Z 7/12 7 / 12 (56) Reference JP 10-163720 (JP, A) JP 11-29639 (JP, A) JP 10-88061 (JP, A) JP 2000-267575 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) C09D 1/00-10/00 C09D 101/00-201/10
Claims (2)
触媒粒子を１０〜５０重量％，粒径０.１〜１０μｍの
ポリ四フッ化エチレン粉末を０.５〜２０重量％分散さ
せた無機塗膜が基材表面に形成されていることを特徴と
する耐傷付き性に優れた光触媒被覆複合部材。1. A silica-based or alumina-based binder is exposed to light.
10 to 50% by weight of catalyst particles and a particle size of 0.1 to 10 μm
Polytetrafluoroethylene powder dispersed in 0.5-20% by weight
A photocatalyst-coated composite member having excellent scratch resistance, characterized in that the formed inorganic coating film is formed on the surface of the substrate .
板，パーティクルボード，石膏板又はコンクリート板を
基材とする請求項１記載の耐傷付き性に優れた光触媒被
覆複合部材。2. Metal plate, glass plate, tile, synthetic resin
Board, particle board, gypsum board or concrete board
The photocatalyst-coated composite member excellent in scratch resistance according to claim 1, which is used as a base material .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23701299A JP3499471B2 (en) | 1999-08-24 | 1999-08-24 | Photocatalyst-coated composite members with excellent scratch resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23701299A JP3499471B2 (en) | 1999-08-24 | 1999-08-24 | Photocatalyst-coated composite members with excellent scratch resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001064539A JP2001064539A (en) | 2001-03-13 |
| JP3499471B2 true JP3499471B2 (en) | 2004-02-23 |
Family
ID=17009089
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23701299A Expired - Fee Related JP3499471B2 (en) | 1999-08-24 | 1999-08-24 | Photocatalyst-coated composite members with excellent scratch resistance |
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| Country | Link |
|---|---|
| JP (1) | JP3499471B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4156821B2 (en) * | 2001-08-23 | 2008-09-24 | 三菱樹脂株式会社 | Photocatalyst-coated acrylic film and photocatalyst-coated laminate |
| JP4641263B2 (en) * | 2006-01-05 | 2011-03-02 | 日鉄住金鋼板株式会社 | Painted metal plate |
| JP4907315B2 (en) * | 2006-11-28 | 2012-03-28 | 新日本製鐵株式会社 | Surface-treated metal material |
| JP5684510B2 (en) * | 2009-10-19 | 2015-03-11 | Ｊｆｅ鋼板株式会社 | Pre-coated steel sheet and manufacturing method thereof |
-
1999
- 1999-08-24 JP JP23701299A patent/JP3499471B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001064539A (en) | 2001-03-13 |
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