JPH1046759A - Roof material having ice-snow sticking preventive performance - Google Patents

Roof material having ice-snow sticking preventive performance

Info

Publication number
JPH1046759A
JPH1046759A JP8335175A JP33517596A JPH1046759A JP H1046759 A JPH1046759 A JP H1046759A JP 8335175 A JP8335175 A JP 8335175A JP 33517596 A JP33517596 A JP 33517596A JP H1046759 A JPH1046759 A JP H1046759A
Authority
JP
Japan
Prior art keywords
water
ice
surface layer
exposed
snow
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
Application number
JP8335175A
Other languages
Japanese (ja)
Inventor
Mitsuyoshi Machida
町田　　光義
Makoto Hayakawa
信 早川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toto Ltd
Original Assignee
Toto Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toto Ltd filed Critical Toto Ltd
Priority to JP8335175A priority Critical patent/JPH1046759A/en
Publication of JPH1046759A publication Critical patent/JPH1046759A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/02—Coatings; Surface treatments hydrophilic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/04—Coatings; Surface treatments hydrophobic

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Surface Treatment Of Glass (AREA)
  • Catalysts (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Laminated Bodies (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Bridges Or Land Bridges (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Table Devices Or Equipment (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Finishing Walls (AREA)
  • Photovoltaic Devices (AREA)
  • Details Of Aerials (AREA)
  • Road Signs Or Road Markings (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Paints Or Removers (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Tents Or Canopies (AREA)
  • Insulators (AREA)
  • Food-Manufacturing Devices (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Abstract

PROBLEM TO BE SOLVED: To form a surface to which ice and snow hardly stick, and provide a roof material maintainable over a long period of time by dispersing both a part to present a hydrophylic property on a surface of a base material and a part to present water repellency on the surface, and forming a surface layer on which a contact angle of the surface with water is not less than a prescribed degree. SOLUTION: Anatase type titanium oxide sol, polytetrafluoroethylene particles and distilled water are mixed together, and are agitated for a prescribed time, and a coating liquid is obtained. Next, this is applied onto a slate base material by a spray coating method. Next, partial heat treatment is performed at a prescribed temperature, and a surface layer composed of anatase type titanium oxide particles 4 pts.wt. and polytetrafluoroethylene particles 6 pts.wt. is formed. Then, both a part to present a hydrophylic property and a part to present water repellency are microscopically dispersed on a surface, and are formed as a surface layer on which a contact angle of the surface with water is not less than 90 deg.. Therefore, it becomes a surface to which a waterdrop hardly sticks, and sticking of ice and snow to a roof material can be prevented.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、着氷雪しにくい屋
根材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roofing material which is hardly iced and snowy.

【０００２】[0002]

【従来の技術】屋根に氷雪が付着すると、放置しておけ
ば、その重みによって、屋根の変形等が生じるおそれが
ある。そのため、降雪地域では頻繁に雪おろしする必要
性が生じ、多大のコストと労力を要していた。2. Description of the Related Art If ice or snow adheres to a roof, the roof may be deformed due to its weight if left unattended. For this reason, in snowfall areas, it is necessary to frequently remove snow, which has required a great deal of cost and labor.

【０００３】[0003]

【発明が解決しようとする課題】そこで、本発明では、
氷雪が付着しにくい表面を有し、かつ長期的に維持でき
る屋根材を提供することを目的とする。Therefore, in the present invention,
It is an object of the present invention to provide a roofing material having a surface to which ice and snow are unlikely to adhere and which can be maintained for a long period of time.

【０００４】[0004]

【課題を解決するための手段】本発明では、上記課題を
解決すべく、基材表面に、光触媒性酸化物粒子が外気と
接するように露出した親水性を呈する部分と、撥水性フ
ッ素樹脂が外気と接するように露出した撥水性を呈する
部分の双方が表面に微視的に分散された構造を有し、か
つ表面の水との接触角が９０゜以上である表面層が形成
されていることを特徴とする水滴付着防止性を有する屋
根材を提供する。光触媒性酸化物粒子が外気と接するよ
うに露出した親水性を呈する部分と、撥水性フッ素樹脂
が外気と接するように露出した撥水性を呈する部分の双
方が表面に微視的に分散された構造では、親水性表面と
撥水性表面が隣接するため、親水性表面になじみやすい
親水性の付着物は隣接する撥水性部分になじまない。逆
に撥水性表面になじみやすい疎水性の付着物は隣接する
親水性部分になじまない。そのため、親水性付着物も、
疎水性付着物も部材表面に固着されることはなく、表面
は清浄な状態に維持される。さらに、光触媒が存在する
ことにより、光触媒の光励起に応じて光触媒性酸化物粒
子が外気と接するように露出した親水性を呈する部分は
恒久的に親水性を維持するので、上記親水性を呈する部
分と撥水性を呈する部分の双方が表面に微視的に分散さ
れた構造は維持される。すなわち、水との接触角を９０
゜以上にすると、その状態は光触媒の光励起に応じて維
持され、水滴が付着しにくくなる。従って、水滴が付着
しにくい表面が形成可能となり、以て屋根に氷雪が付着
することが防止される。According to the present invention, in order to solve the above-mentioned problems, a photocatalytic oxide particle is exposed on the surface of a base material so as to be in contact with the outside air and has a hydrophilic property, and a water-repellent fluororesin. Both the water-repellent portions exposed so as to be in contact with the outside air have a structure in which both surfaces are microscopically dispersed, and a surface layer having a surface contact angle of 90 ° or more with water is formed. A roofing material having the property of preventing water droplet adhesion is provided. A structure in which both a hydrophilic part exposed to contact the photocatalytic oxide particles with the outside air and a water-repellent part exposed to the water-repellent fluororesin contact with the outside are microscopically dispersed on the surface. In this case, since the hydrophilic surface and the water-repellent surface are adjacent to each other, the hydrophilic adherent that easily adapts to the hydrophilic surface does not adapt to the adjacent water-repellent portion. Conversely, hydrophobic deposits that are easily adapted to the water-repellent surface do not adapt to adjacent hydrophilic portions. Therefore, hydrophilic deposits also
Hydrophobic deposits are not fixed to the member surface, and the surface is maintained in a clean state. Furthermore, the presence of the photocatalyst causes the photocatalytic oxide particles to be exposed so as to be in contact with the outside air in response to the photoexcitation of the photocatalyst, so that the hydrophilic portion is permanently maintained. The structure in which both the water-repellent and water-repellent portions are microscopically dispersed on the surface is maintained. That is, the contact angle with water is 90
Above, the state is maintained in accordance with the photoexcitation of the photocatalyst, and it is difficult for water droplets to adhere. Therefore, it is possible to form a surface to which water droplets are not easily attached, thereby preventing ice and snow from attaching to the roof.

【０００５】[0005]

【発明の実施の形態】図１は、屋根の斜視図を示してお
り、本発明の態様においては、屋根基材上には、光触媒
性酸化チタンが外気と接するように露出した親水性を呈
する部分と、撥水性フッ素樹脂が外気と接するように露
出した撥水性を呈する部分の双方が表面に微視的に分散
された構造を有し、かつ表面の水との接触角が９０゜以
上である表面層が形成されている。基材と表面層との間
には、基材との密着性向上等の目的で透明な中間層を設
けることもできる。FIG. 1 is a perspective view of a roof. In an embodiment of the present invention, a photocatalytic titanium oxide exhibits a hydrophilic property on a roof base material so as to be in contact with the outside air. Both the portion and the water-repellent portion where the water-repellent fluororesin is exposed so as to be in contact with the outside air have a structure in which both are microscopically dispersed on the surface, and the surface has a contact angle of 90 ° or more with water. A certain surface layer is formed. A transparent intermediate layer may be provided between the substrate and the surface layer for the purpose of improving adhesion to the substrate and the like.

【０００６】光触媒とは、その結晶の伝導帯と価電子帯
との間のエネルギ−ギャップよりも大きなエネルギ−
（すなわち短い波長）の光（励起光）を照射したとき
に、価電子帯中の電子の励起（光励起）が生じて、伝導
電子と正孔を生成しうる物質をいい、光触媒性酸化物に
は、例えば、アナタ−ゼ型酸化チタン、ルチル型酸化チ
タン、酸化亜鉛、酸化錫、酸化第二鉄、三酸化二ビスマ
ス、三酸化タングステン、チタン酸ストロンチウム等の
酸化物が好適に利用できる。光触媒の光励起に用いる光
源としては、太陽光、街灯等の環境にある光源を利用し
てもよいし、及び専用光源として、励起光を照射しうる
光源を使用してもよい。その場合使用する光源には、例
えば、蛍光灯、白熱電灯、メタルハライドランプ、水銀
ランプ、キセノンランプ、殺菌灯等が利用できる。とり
わけ、紫外線と可視光の双方を発光する発光体を有する
照明が好ましい。光触媒の光励起により、基材表面が高
度に親水化されるためには、励起光の照度は０．００１
ｍＷ／ｃｍ2以上あればよいが、０．０１ｍＷ／ｃｍ2以
上だと好ましく、０．１ｍＷ／ｃｍ2以上だとより好ま
しい。[0006] The photocatalyst has an energy larger than the energy gap between the conduction band and the valence band of the crystal.
A substance that can generate conduction electrons and holes by irradiating light (excitation light) with light (excitation light) of a short wavelength (excitation light). For example, oxides such as anatase type titanium oxide, rutile type titanium oxide, zinc oxide, tin oxide, ferric oxide, bismuth trioxide, tungsten trioxide and strontium titanate can be suitably used. As a light source used for photoexcitation of the photocatalyst, a light source in an environment such as sunlight or a street lamp may be used, or a light source capable of irradiating excitation light may be used as a dedicated light source. As the light source used in that case, for example, a fluorescent lamp, an incandescent lamp, a metal halide lamp, a mercury lamp, a xenon lamp, a germicidal lamp, or the like can be used. In particular, illumination having a light emitter that emits both ultraviolet light and visible light is preferable. In order for the substrate surface to be highly hydrophilized by photoexcitation of the photocatalyst, the illuminance of the excitation light is 0.001.
mW suffices / cm 2 or more, but preferably that it 0.01 mW / cm 2 or more, and more preferably it 0.1 mW / cm 2 or more.

【０００７】撥水性フッ素樹脂には、ポリテトラフルオ
ロエチレン、ポリクロロトリフルオロエチレン、ポリヘ
キサフルオロプロピレン、テトラフルオロエチレン−ヘ
キサフルオロプロピレンコポリマ−等が好適に利用でき
る。As the water-repellent fluororesin, polytetrafluoroethylene, polychlorotrifluoroethylene, polyhexafluoropropylene, tetrafluoroethylene-hexafluoropropylene copolymer and the like can be suitably used.

【０００８】表面層の膜厚は、０．４μｍ以下にするの
が好ましい。そうすれば、光の乱反射による白濁を防止
することができ、表面層は実質的に透明となる。さら
に、表面層の膜厚を、０．２μｍ以下にすると一層好ま
しい。そうすれば、光の干渉による表面層の発色を防止
することができる。また、表面層が薄ければ薄いほどそ
の透明度は向上する。更に、膜厚を薄くすれば、表面層
の耐摩耗性が向上する。The thickness of the surface layer is preferably set to 0.4 μm or less. Then, cloudiness due to irregular reflection of light can be prevented, and the surface layer becomes substantially transparent. Further, it is more preferable that the thickness of the surface layer be 0.2 μm or less. Then, it is possible to prevent the surface layer from being colored by light interference. Also, the thinner the surface layer, the better its transparency. Further, when the film thickness is reduced, the wear resistance of the surface layer is improved.

【０００９】表面層には、Ａｇ、Ｃｕ、Ｚｎのような金
属を添加することができる。前記金属を添加した表面層
は、表面に付着した細菌や黴を暗所でも死滅させること
ができる。Metals such as Ag, Cu and Zn can be added to the surface layer. The surface layer to which the metal is added can kill bacteria and fungi attached to the surface even in a dark place.

【００１０】表面層にはＰｔ、Ｐｄ、Ｒｕ、Ｒｈ、Ｉ
ｒ、Ｏｓのような白金族金属を添加することができる。
前記金属を添加した表面層は、光触媒の酸化還元活性を
増強でき、有機物汚れの分解性、有害気体や悪臭の分解
性を向上させることができる。Pt, Pd, Ru, Rh, I
A platinum group metal such as r or Os can be added.
The surface layer to which the metal is added can enhance the redox activity of the photocatalyst, and can improve the decomposability of organic contaminants and the decomposability of harmful gases and odors.

【００１１】光触媒性酸化物粒子が外気と接するように
露出した親水性を呈する部分と、撥水性フッ素樹脂が外
気と接するように露出した撥水性を呈する部分の双方が
表面に微視的に分散された構造を有するか否かは、以下
の方法により確認可能である。 その１つの方法は以下
のように行う。すなわち、まず、硝酸銀、乳酸銀、塩化
白金酸、塩化パラジウムなどのＡｇ、Ｐｔ、Ｐｄといっ
た原子番号の大きな金属を含む溶液を基材表面に塗布
し、基材表面に光触媒の励起光を照射して、Ａｇ、Ｐ
ｔ、Ｐｄといった原子番号の大きな金属を基材表面に析
出させる。上記金属の析出反応は光触媒による上記金属
の還元作用に基づくので、このとき、金属は光触媒性酸
化物粒子が外気と接するように露出した親水性を呈する
部分には付着するが、撥水性フッ素樹脂が外気と接する
ように露出した撥水性を呈する部分には付着しにくい。
次に、走査型電子顕微鏡の反射電子像の観察により、濃
淡（コントラスト）が分散して生じていれば、光触媒性
酸化物粒子が外気と接するように露出した親水性を呈す
る部分と、撥水性フッ素樹脂が外気と接するように露出
した撥水性を呈する部分の双方が表面に微視的に分散さ
れた構造を有すると結論づけられる。他の観察方法とし
ては、反射電子像による濃淡の観察の代わりに、エネル
ギ−分散型Ｘ線分析装置（ＥＤＸ）、或いはエレクトロ
ンプロ−ブマイクロアナライザ−（ＥＰＭＡ）等によ
り、表面の元素分析を行うようにしてよい。他の観察方
法としては、上記金属が銀のように有色であれば、反射
電子像による濃淡の観察の代わりに、光学顕微鏡によ
り、色の観察を行うようにしてよい。The photocatalytic oxide particles are exposed to the outside air and exhibit hydrophilicity, and the water-repellent fluororesin is exposed to the air and exhibit water repellency. Whether or not it has the structure described above can be confirmed by the following method. One such method is performed as follows. That is, first, a solution containing a metal having a large atomic number such as Ag, Pt, or Pd such as silver nitrate, silver lactate, chloroplatinic acid, or palladium chloride is applied to the substrate surface, and the substrate surface is irradiated with excitation light of a photocatalyst. Ag, P
A metal having a large atomic number, such as t or Pd, is deposited on the substrate surface. Since the deposition reaction of the metal is based on the reduction action of the metal by the photocatalyst, at this time, the metal adheres to the hydrophilic portion exposed by the photocatalytic oxide particles in contact with the outside air, but the water-repellent fluororesin Is hardly adhered to a portion exhibiting water repellency exposed so as to be in contact with the outside air.
Next, by observing the reflected electron image of the scanning electron microscope, if the density (contrast) is dispersed, the photocatalytic oxide particles are exposed so as to be in contact with the outside air and exhibit a hydrophilic property. It is concluded that both the water-repellent portions exposed so that the fluororesin comes into contact with the outside air have a structure microscopically dispersed on the surface. As another observation method, elemental analysis of the surface is performed using an energy dispersive X-ray analyzer (EDX) or an electron probe microanalyzer (EPMA) instead of observing the density using a backscattered electron image. You may do so. As another observation method, if the metal is colored such as silver, the color may be observed by an optical microscope instead of observing the density by a reflected electron image.

【００１２】次に、基材表面に、光触媒性酸化物粒子が
外気と接するように露出した親水性を呈する部分と、撥
水性フッ素樹脂が外気と接するように露出した撥水性を
呈する部分の双方が表面に微視的に分散された構造を有
する表面層が形成されている防汚性部材の製法について
説明する。この場合の製法は、基本的には、基材表面に
コ−ティング組成物を塗布し、コ−ティング組成物を基
材表面に固着せしめることによる。Next, on the surface of the base material, both a portion exhibiting hydrophilicity where the photocatalytic oxide particles are exposed to the outside air and a portion exhibiting water repellency where the water-repellent fluororesin is exposed so as to contact the outside air A method for producing an antifouling member having a surface layer having a structure in which is dispersed microscopically on the surface will be described. The manufacturing method in this case is basically based on applying a coating composition on the surface of the substrate and fixing the coating composition on the surface of the substrate.

【００１３】ここでコ−ティング組成物は、光触媒粒子
と撥水性フッ素樹脂を必須構成要件とし、その他に水、
エタノ−ル、プロパノ−ル等の溶媒、フッ素樹脂の架橋
剤や、コ−ティング液の分散性を向上させる界面活性剤
などを添加してもよい。Here, the coating composition contains photocatalyst particles and a water-repellent fluororesin as essential components.
A solvent such as ethanol or propanol, a crosslinking agent for a fluororesin, or a surfactant for improving the dispersibility of the coating liquid may be added.

【００１４】上記コ−ティング組成物の塗布方法として
は、スプレ−コ−ティング法、ディップコ−ティング
法、フロ−コ−ティング法、スピンコ−ティング法、ロ
−ルコ−ティング法、刷毛塗り、スポンジ塗り等の方法
が好適に利用できる。上記コ−ティング組成物は、フッ
素樹脂の溶融する３００℃以上の温度での熱処理、フッ
素樹脂の架橋剤を添加する場合には、架橋剤によりフッ
素樹脂が硬化する温度での熱処理、加圧処理、加圧処理
と上記熱処理との併用、衝撃圧力による固定等の方法で
固着できる。また、上記方法で固着させる前に、基材表
面をブラスト処理等して凹凸を設けるようにしてもよ
い。そうすれば、基材と表面層との固着性を向上させる
ことができる。The coating composition may be applied by spray coating, dip coating, flow coating, spin coating, roll coating, brush coating, sponge coating, or the like. A method such as coating can be suitably used. The coating composition is subjected to a heat treatment at a temperature of 300 ° C. or higher at which the fluororesin is melted, a heat treatment at a temperature at which the fluororesin is cured by the crosslinking agent when a crosslinking agent for the fluororesin is added, and a pressure treatment. It can be fixed by a method such as a combination of a pressure treatment and the above heat treatment, or a fixing by an impact pressure. Further, before fixing by the above method, the surface of the substrate may be blasted or the like to provide irregularities. Then, the adhesion between the substrate and the surface layer can be improved.

【００１５】[0015]

【実施例】【Example】

実施例．アナタ−ゼ型酸化チタンゾル（石原産業、ＳＴ
Ｓ−１１）と、ポリテトラフルオロエチレン（ＰＴＦ
Ｅ）粒子（ダイキン工業、Ｄ−１）と蒸留水を混合し、
３０分撹拌して得たコ−ティング液を、スプレ−コ−テ
ィング法にて、スレ−ト基材上に塗布し、３８０℃で３
分熱処理して、アナタ−ゼ型酸化チタン粒子４重量部、
ポリテトラフルオロエチレン粒子６重量部からなる表面
層を形成して＃１試料を得た。＃１試料の表面観察によ
り光触媒性酸化物粒子が外気と接するように露出した親
水性を呈する部分と、撥水性フッ素樹脂が外気と接する
ように露出した撥水性を呈する部分の双方が表面に微視
的に分散された構造を有する表面層が形成されているこ
とが確認された。次に、＃１試料の表面の水との接触角
を測定した。ここで水との接触角は接触角測定器（協和
界面科学、ＣＡ−Ｘ１５０）を用い、滴下後３０秒後の
水との接触角で評価した。その結果、水との接触角は１
２０゜と９０゜以上の値となり、＃１試料を傾けると水
滴は転がりながら落下した。次に、＃１試料に紫外線光
源（三共電気、ブラックライトブル−（ＢＬＢ）蛍光
灯）を用いて試料の表面に０．５ｍＷ／ｃｍ2の紫外線
照度で約１日間紫外線を照射して＃２試料を得た。＃２
試料について水との接触角を測定した。その結果、水と
の接触角は１１０゜と９０゜以上の値となり、＃２試料
を傾けると水滴は転がりながら落下した。Example. Anatase type titanium oxide sol (Ishihara Sangyo, ST
S-11) and polytetrafluoroethylene (PTF
E) mixing the particles (Daikin Industries, D-1) and distilled water,
The coating liquid obtained by stirring for 30 minutes was applied on a slatted base material by a spray coating method.
Heat treatment, 4 parts by weight of anatase type titanium oxide particles,
A surface layer consisting of 6 parts by weight of polytetrafluoroethylene particles was formed to obtain a # 1 sample. In the surface observation of the # 1 sample, both the photocatalytic oxide particles exposed to be in contact with the outside air and exhibiting hydrophilicity, and the water-repellent fluororesin exposed in contact with the outside were exposed to water. It was confirmed that a surface layer having a visually dispersed structure was formed. Next, the contact angle of the surface of the # 1 sample with water was measured. Here, the contact angle with water was evaluated using a contact angle measuring device (Kyowa Interface Science, CA-X150) based on the contact angle with water 30 seconds after dropping. As a result, the contact angle with water is 1
When the sample # 1 was tilted, water droplets fell while rolling. Next, the surface of the sample # 1 was irradiated with ultraviolet light for about one day at an ultraviolet illuminance of 0.5 mW / cm 2 using an ultraviolet light source (Sankyo Electric, Black Light Bull- (BLB) fluorescent lamp) for # 1. A sample was obtained. # 2
The contact angle of the sample with water was measured. As a result, the contact angle with water became 110 ° and a value of 90 ° or more. When the # 2 sample was tilted, the water droplets fell while rolling.

【００１６】[0016]

【発明の効果】本発明によれば、水滴が付着しにくい表
面を有し、かつ長期的に維持できる屋根材を提供するこ
とが可能となり、以て屋根材に氷雪が付着することを防
止することが可能となる。According to the present invention, it is possible to provide a roofing material having a surface to which water droplets are not easily attached and which can be maintained for a long period of time, thereby preventing ice and snow from attaching to the roofing material. It becomes possible.

【図面の簡単な説明】[Brief description of the drawings]

【図１】屋根の斜視図FIG. 1 is a perspective view of a roof.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 基材表面に、光触媒性酸化物粒子が外気
と接するように露出した親水性を呈する部分と、撥水性
フッ素樹脂が外気と接するように露出した撥水性を呈す
る部分の双方が表面に微視的に分散された構造を有し、
かつ表面の水との接触角が９０゜以上である表面層が形
成されていることを特徴とする氷雪付着性を有する屋根
材。1. The photocatalytic oxide particles are exposed on the surface of the base material such that the photocatalytic oxide particles are exposed to the outside air and exhibit hydrophilicity, and the water-repellent fluororesin is exposed and exposed to the outside air. Has a structure that is microscopically dispersed on the surface,
A roofing material having adhesion to ice and snow, wherein a surface layer having a surface contact angle of 90 ° or more with water is formed.
JP8335175A 1996-05-31 1996-11-29 Roof material having ice-snow sticking preventive performance Pending JPH1046759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8335175A JPH1046759A (en) 1996-05-31 1996-11-29 Roof material having ice-snow sticking preventive performance

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP17538696 1996-05-31
JP8-175386 1996-09-24
JP8335175A JPH1046759A (en) 1996-05-31 1996-11-29 Roof material having ice-snow sticking preventive performance

Publications (1)

Publication Number Publication Date
JPH1046759A true JPH1046759A (en) 1998-02-17

Family

ID=37857701

Family Applications (28)

Application Number Title Priority Date Filing Date
JP8299447A Pending JPH1046534A (en) 1996-05-31 1996-10-23 Antifouling guard fence
JP8299444A Pending JPH1046526A (en) 1996-05-31 1996-10-23 Antifouling noise insulating wall
JP8299443A Pending JPH1046989A (en) 1996-05-31 1996-10-23 Inner wall of antifouling property tunnel
JP8299446A Pending JPH1046527A (en) 1996-05-31 1996-10-23 Decorative sheet for antifouling road
JP8299445A Pending JPH1046522A (en) 1996-05-31 1996-10-23 Antifouling balustrade
JP8299678A Pending JPH1043069A (en) 1996-05-31 1996-10-24 Stain preventing plate
JP8299676A Pending JPH1044301A (en) 1996-05-31 1996-10-24 Building material for stain-proofing outer wall
JP8299679A Pending JPH1045431A (en) 1996-05-31 1996-10-24 Window glass for vehicle having both antifouling property and property of preventing sticking of drop of water
JP8301042A Pending JPH1045432A (en) 1996-05-31 1996-10-25 Mirror for vehicle having both antifouling property and property of preventing sticking of drop of water
JP8301044A Pending JPH1046530A (en) 1996-05-31 1996-10-25 Road mirror doubly furnished with antifouling property and droplet attachment preventive property
JP8301047A Pending JPH1043019A (en) 1996-05-31 1996-10-25 Lavatory mirror with water droplet antisticking property
JP8301045A Pending JPH1051014A (en) 1996-05-31 1996-10-25 Solar battery equipped with stainproof cover
JP8302446A Pending JPH1046054A (en) 1996-05-31 1996-10-28 Antifouling wheel
JP8302448A Pending JPH1046952A (en) 1996-05-31 1996-10-28 Dirt preventive blind
JP8303613A Pending JPH1047890A (en) 1996-05-31 1996-10-29 Fins for heat exchanger having properties of preventing sticking of waterdrop and heat exchanger equipped with them
JP8303611A Pending JPH1050159A (en) 1996-05-31 1996-10-29 Insulator provided with stain-proofness and dew drop deposit preventive property
JP8306998A Pending JPH1044302A (en) 1996-05-31 1996-11-01 Stain-proofing membrane structure material
JP8311415A Pending JPH1043024A (en) 1996-05-31 1996-11-07 Pollution free dish and dish housing apparatus for the same
JP8311416A Pending JPH1043013A (en) 1996-05-31 1996-11-07 Heat insulating showcase with water droplet antisticking property
JP8311419A Pending JPH1043078A (en) 1996-05-31 1996-11-07 Bathtub
JP8323518A Pending JPH1043682A (en) 1996-05-31 1996-11-19 Stain-proof automobile body face
JP8323515A Pending JPH1050118A (en) 1996-05-31 1996-11-19 Pollution-proof luminaire
JP8324651A Pending JPH1050111A (en) 1996-05-31 1996-11-20 Pollution-proof lighting system for tunnel
JP8335175A Pending JPH1046759A (en) 1996-05-31 1996-11-29 Roof material having ice-snow sticking preventive performance
JP8335174A Pending JPH1051214A (en) 1996-05-31 1996-11-29 Antenna with anti-attachment property against ice and snow
JP8344586A Pending JPH1045433A (en) 1996-05-31 1996-12-09 Cover for motor-cycle instrument panel having property for preventing waterdrop sticking and motor-cycle instrument panel
JP8346741A Pending JPH1048578A (en) 1996-05-31 1996-12-10 Glass lens having preventing ability of sticking waterdrop
JP8354953A Pending JPH1045428A (en) 1996-05-31 1996-12-21 Window glass for construction

Family Applications Before (23)

Application Number Title Priority Date Filing Date
JP8299447A Pending JPH1046534A (en) 1996-05-31 1996-10-23 Antifouling guard fence
JP8299444A Pending JPH1046526A (en) 1996-05-31 1996-10-23 Antifouling noise insulating wall
JP8299443A Pending JPH1046989A (en) 1996-05-31 1996-10-23 Inner wall of antifouling property tunnel
JP8299446A Pending JPH1046527A (en) 1996-05-31 1996-10-23 Decorative sheet for antifouling road
JP8299445A Pending JPH1046522A (en) 1996-05-31 1996-10-23 Antifouling balustrade
JP8299678A Pending JPH1043069A (en) 1996-05-31 1996-10-24 Stain preventing plate
JP8299676A Pending JPH1044301A (en) 1996-05-31 1996-10-24 Building material for stain-proofing outer wall
JP8299679A Pending JPH1045431A (en) 1996-05-31 1996-10-24 Window glass for vehicle having both antifouling property and property of preventing sticking of drop of water
JP8301042A Pending JPH1045432A (en) 1996-05-31 1996-10-25 Mirror for vehicle having both antifouling property and property of preventing sticking of drop of water
JP8301044A Pending JPH1046530A (en) 1996-05-31 1996-10-25 Road mirror doubly furnished with antifouling property and droplet attachment preventive property
JP8301047A Pending JPH1043019A (en) 1996-05-31 1996-10-25 Lavatory mirror with water droplet antisticking property
JP8301045A Pending JPH1051014A (en) 1996-05-31 1996-10-25 Solar battery equipped with stainproof cover
JP8302446A Pending JPH1046054A (en) 1996-05-31 1996-10-28 Antifouling wheel
JP8302448A Pending JPH1046952A (en) 1996-05-31 1996-10-28 Dirt preventive blind
JP8303613A Pending JPH1047890A (en) 1996-05-31 1996-10-29 Fins for heat exchanger having properties of preventing sticking of waterdrop and heat exchanger equipped with them
JP8303611A Pending JPH1050159A (en) 1996-05-31 1996-10-29 Insulator provided with stain-proofness and dew drop deposit preventive property
JP8306998A Pending JPH1044302A (en) 1996-05-31 1996-11-01 Stain-proofing membrane structure material
JP8311415A Pending JPH1043024A (en) 1996-05-31 1996-11-07 Pollution free dish and dish housing apparatus for the same
JP8311416A Pending JPH1043013A (en) 1996-05-31 1996-11-07 Heat insulating showcase with water droplet antisticking property
JP8311419A Pending JPH1043078A (en) 1996-05-31 1996-11-07 Bathtub
JP8323518A Pending JPH1043682A (en) 1996-05-31 1996-11-19 Stain-proof automobile body face
JP8323515A Pending JPH1050118A (en) 1996-05-31 1996-11-19 Pollution-proof luminaire
JP8324651A Pending JPH1050111A (en) 1996-05-31 1996-11-20 Pollution-proof lighting system for tunnel

Family Applications After (4)

Application Number Title Priority Date Filing Date
JP8335174A Pending JPH1051214A (en) 1996-05-31 1996-11-29 Antenna with anti-attachment property against ice and snow
JP8344586A Pending JPH1045433A (en) 1996-05-31 1996-12-09 Cover for motor-cycle instrument panel having property for preventing waterdrop sticking and motor-cycle instrument panel
JP8346741A Pending JPH1048578A (en) 1996-05-31 1996-12-10 Glass lens having preventing ability of sticking waterdrop
JP8354953A Pending JPH1045428A (en) 1996-05-31 1996-12-21 Window glass for construction

Country Status (2)

Country Link
JP (28) JPH1046534A (en)
CN (1) CN1927474A (en)

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Also Published As

Publication number Publication date
JPH1045431A (en) 1998-02-17
JPH1047890A (en) 1998-02-20
JPH1051014A (en) 1998-02-20
JPH1044302A (en) 1998-02-17
JPH1044301A (en) 1998-02-17
JPH1046530A (en) 1998-02-17
JPH1046527A (en) 1998-02-17
JPH1046952A (en) 1998-02-17
JPH1046989A (en) 1998-02-17
JPH1046054A (en) 1998-02-17
JPH1043078A (en) 1998-02-17
JPH1051214A (en) 1998-02-20
JPH1043024A (en) 1998-02-17
CN1927474A (en) 2007-03-14
JPH1045433A (en) 1998-02-17
JPH1043069A (en) 1998-02-17
JPH1050118A (en) 1998-02-20
JPH1046534A (en) 1998-02-17
JPH1046522A (en) 1998-02-17
JPH1048578A (en) 1998-02-20
JPH1046526A (en) 1998-02-17
JPH1050159A (en) 1998-02-20
JPH1043013A (en) 1998-02-17
JPH1043682A (en) 1998-02-17
JPH1050111A (en) 1998-02-20
JPH1045428A (en) 1998-02-17
JPH1045432A (en) 1998-02-17
JPH1043019A (en) 1998-02-17

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