JP4557521B2 - Coating material for lighting equipment and film for protecting lighting equipment including the same - Google Patents
Coating material for lighting equipment and film for protecting lighting equipment including the same Download PDFInfo
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本発明は照明器具の保護のために用いる被覆材料及びそれを含む保護用フィルムに関する。 The present invention relates to a coating material used for protecting a lighting apparatus and a protective film including the same.
照明器具、特に、屋外において使用される照明器具では、投石などの外的作用が加わり、照明器具にはめ込まれたガラスなどのカバーが破損するなどの事故が発生している。このため、ガラスなどのカバー材料の破損による飛散を防止するための保護材料が求められている。また、特に、屋外での照明器具では、ランプからの熱に対する耐熱性、耐候性などが求められる。 In lighting fixtures, in particular, lighting fixtures used outdoors, an external action such as throwing stones is applied, and accidents such as breakage of a cover such as glass fitted in the lighting fixture have occurred. For this reason, a protective material for preventing scattering due to breakage of a cover material such as glass is required. In particular, outdoor lighting fixtures are required to have heat resistance and weather resistance against heat from the lamp.
ガラスの表面保護や飛散防止には、粘着剤などでガラスにポリエステル系のフィルムを貼り付ける方法はよく知られた技術である。ポリエステル系フィルムは、建築物における窓ガラスの破損時の飛散防止に特に有用である。しかし、一般に、ポリエチレンテレフタレート（ＰＥＴ）などのポリエステル系フィルムは、屋外で使用されるような大型の照明器具が発生する熱に耐えるのには十分な耐熱性を有しないことがある。このため、外灯のカバーガラスの飛散防止には、ガラス表面にＰＦＡ（パーフルオロアルコキシ樹脂：テトラフルオロエチレンとパーフルオロアルキルビニルエーテルとのコポリマー）などのフッ素系樹脂を粉体塗装することが行なわれている（例えば、特許文献１を参照されたい）。このような粉体塗装や、あるいは、溶液コーティングは高温での乾燥や焼き付けが必要とされる。また、でき上がった被膜は乳白色で表面平滑性も低いために、光透過性が悪いという問題がある。 For protecting the surface of glass and preventing scattering, a method of sticking a polyester film on glass with an adhesive or the like is a well-known technique. The polyester film is particularly useful for preventing scattering when a window glass in a building is damaged. However, in general, polyester-based films such as polyethylene terephthalate (PET) may not have sufficient heat resistance to withstand the heat generated by large luminaires such as those used outdoors. For this reason, in order to prevent the cover glass of the outdoor lamp from being scattered, powder coating of fluorine resin such as PFA (perfluoroalkoxy resin: copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether) is performed on the glass surface. (For example, see Patent Document 1). Such powder coating or solution coating requires drying and baking at a high temperature. Moreover, since the finished film is milky white and has low surface smoothness, there is a problem that the light transmittance is poor.
そこで、フッ素系樹脂材料をフィルムの形態でガラスなどの被着体に貼り付けることが望まれるが、フッ素系樹脂は柔軟性が低くかつ難接着性材料であるから、接着剤を用いてフィルムをガラスに貼り付けることは難しい。また、フッ素系樹脂を接着するためには、一般的には、塩基性化学薬品におる表面処理が行なわれるが、手間がかかるばかりか、表面が茶褐色に変色するなど、透明性を得にくい。透明性のある接着剤は、乾燥、硬化に熱が必要なものが多いので、現場での飛散防止処理（貼り付け）加工が難しいなどの問題がある。 Therefore, it is desirable to attach the fluorine-based resin material to an adherend such as glass in the form of a film. However, since the fluorine-based resin is a low-flexibility and difficult-to-adhere material, the film is formed using an adhesive. It is difficult to stick on glass. In order to bond the fluororesin, surface treatment with a basic chemical is generally performed. However, it is not only troublesome, but it is difficult to obtain transparency because the surface is turned brown. Since many transparent adhesives require heat for drying and curing, there is a problem that it is difficult to prevent scattering (pasting) on site.
本発明は、上記のような課題を解決するためになされたものであり、耐熱性、耐候性、光透過性、加工性、柔軟性などを備えたフッ素系ポリマーをベースとする照明器具用被覆材料及びそれを用いた照明器具保護用フィルムを提供することを目的とする。 The present invention has been made to solve the above-described problems, and is a coating for a lighting apparatus based on a fluorine-based polymer having heat resistance, weather resistance, light transmission, workability, flexibility, and the like. An object is to provide a material and a film for protecting a lighting fixture using the material.
本発明は、その１つの態様によると、フッ素系ポリマーを含む被膜を形成する照明器具用被覆材料であって、得られる被膜は曲げ弾性率がＡＳＴＭ Ｄ７９０試験法に従って測定したときに５０〜２００ＭＰａである、照明器具用被覆材料を提供する。
本発明は、また、別の態様において、上記の照明器具用被覆材料から得られた被膜をシリコーン系粘着剤層の上に有する、照明器具保護用フィルムを提供する。
本発明は、さらに別の態様において、上記照明器具用被覆材料から形成された被膜で被覆された電球を含む照明装置を提供し、さらに、上記照明器具用被覆材料から形成された被膜で被覆された照明器具カバーを含む照明装置を提供する。
According to one aspect of the present invention, there is provided a coating material for a luminaire that forms a coating containing a fluorine-based polymer, and the resulting coating has a flexural modulus of 50 to 200 MPa when measured according to the ASTM D790 test method. A coating material for a luminaire is provided.
Moreover, this invention provides the film for lighting fixtures which has the film | membrane obtained from said coating material for lighting fixtures on a silicone type adhesive layer in another aspect.
In yet another aspect, the present invention provides a lighting device including a light bulb coated with a coating formed from the coating material for a lighting fixture, and further coated with a coating formed from the coating material for the lighting fixture. A lighting device including a lighting fixture cover is provided.
フッ素系ポリマーをベースとする被覆材料のうち、得られる被膜が上記のような曲げ弾性率となるときに、十分な密着性をもって基材を保護することができる。 Of the coating materials based on fluoropolymers, the substrate can be protected with sufficient adhesion when the resulting coating has a flexural modulus as described above.
特に、被膜がＡＳＴＭ Ｄ６３８試験法に従って測定したときに破断点伸び率が４００％以上であるときに、曲面や凹凸を有する基材に対しても形状の追従性が高く、密着性が確保できる。より具体的には、フッ素系ポリマーが、テトラフルオロエチレン（ＴＦＥ）、ビニリデンフルオリド（ＶＤＦ）、及び、ＣＦ２＝ＣＦＲｆ（式中、Ｒｆは１〜８個の炭素原子を有するペルフルオロアルキル基である）をモノマー成分として含む場合に、耐熱性、耐候性、光透過性、加工性、柔軟性などの特に優れた被膜が得られる。 In particular, when the coating has an elongation at break of 400% or more when measured according to the ASTM D638 test method, the conformability of the shape is high even for a substrate having a curved surface or unevenness, and adhesion can be secured. More specifically, the fluoropolymer includes tetrafluoroethylene (TFE), vinylidene fluoride (VDF), and CF 2 = CFR f (wherein R f is a perfluoroalkyl having 1 to 8 carbon atoms. When the monomer component is contained as a monomer component, a particularly excellent film such as heat resistance, weather resistance, light transmittance, workability, and flexibility can be obtained.
本発明の被膜は加工性、柔軟性などに優れているので、照明器具用保護フィルムの形態として特に有利に利用される。このようなフィルムは溶液塗布や粉体塗装の場合と異なり、乾燥や加熱溶融工程を必要としないため、簡便に施工を行なうことができる。また、フィルムの柔軟性が高いので基材の凹凸などの形態に追従して、高い密着性をもって貼り付けることができる。 Since the coating film of the present invention is excellent in processability and flexibility, it is particularly advantageously used as a form of a protective film for lighting equipment. Unlike the case of solution coating or powder coating, such a film does not require a drying or heat-melting step, so that it can be easily applied. Further, since the flexibility of the film is high, it can be attached with high adhesion following the shape of the unevenness of the substrate.
本発明の照明器具用被覆材料から形成された被膜は飛散防止フィルムとして作用するので、被覆された照明装置は、その破損時に、電球や照明器具カバーなどの破片の飛散を防止することができる。また、透明性が高いので、照光効率を低下させない。さらには、被膜は難燃性が高いので、火災時の延焼防止になる。 Since the coating formed from the coating material for lighting fixtures of the present invention acts as a scattering prevention film, the coated lighting device can prevent scattering of fragments such as a light bulb and a lighting fixture cover when the coating is broken. Further, since the transparency is high, the illumination efficiency is not lowered. Furthermore, since the coating is highly flame retardant, it prevents fire spread in the event of a fire.
本発明の照明器具用被覆材料はフッ素系ポリマーを含み、それから得られる被膜は曲げ弾性率がＡＳＴＭ Ｄ７９０試験法に従って測定したときに５０〜２００ＭＰａである。特に、被膜がＡＳＴＭ Ｄ６３８試験法に従って測定したときに破断点伸び率が４００％以上であるときに、曲面や凹凸を有する基材に対しても形状の追従性が高く、密着性が確保できるので好ましい。フッ素系ポリマーは、従来の飛散防止フィルムに用いられているポリエチレンテレフタレート（ＰＥＴ）フィルムなどのポリエステルフィルムと比較して耐熱性及び耐候性が高い。また、フッ素系ポリマーは、好ましくは、テトラフルオロエチレン（ＴＦＥ）、ビニリデンフルオリド（ＶＤＦ）及びＣＦ２＝ＣＦＲｆ（式中、Ｒｆは１〜８個の炭素原子を有するペルフルオロアルキル基である）をモノマー成分として含むポリマーである。このようなフッ素系ポリマーは、従来のＰＦＡ（パーフルオロアルコキシ樹脂：テトラフルオロエチレンとパーフルオロアルキルビニルエーテルとのコポリマー）、ＦＥＰ（テトラフルオロエチレンとヘキサフルオロプロピレンとのコポリマー）などのフッ素系樹脂と比較して、透明性が高いので、光透過性が高く、照明器具からの光の照光効率を低下させることがない。 The coating material for lighting fixtures of the present invention contains a fluorine-based polymer, and the coating obtained therefrom has a flexural modulus of 50 to 200 MPa when measured according to the ASTM D790 test method. In particular, when the coating film has an elongation at break of 400% or more when measured according to the ASTM D638 test method, the shape has high conformability to a substrate having a curved surface or unevenness, and adhesion can be secured. preferable. Fluoropolymers have higher heat resistance and weather resistance than polyester films such as polyethylene terephthalate (PET) films that are used in conventional anti-scattering films. The fluoropolymer is preferably tetrafluoroethylene (TFE), vinylidene fluoride (VDF) and CF 2 = CFR f (wherein R f is a perfluoroalkyl group having 1 to 8 carbon atoms. ) As a monomer component. Such fluoropolymers are compared with conventional fluoropolymers such as PFA (perfluoroalkoxy resin: copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether) and FEP (copolymer of tetrafluoroethylene and hexafluoropropylene). And since it is highly transparent, its light transmittance is high, and the illumination efficiency of the light from a lighting fixture is not reduced.
また、上記の３種のモノマーを含むポリマーは加工性、柔軟性にも優れており、フィルム形態の被覆材料を曲面基材に対して容易に貼り付けることが可能になる。柔軟性の高いポリマーを得るために、フッ素系ポリマーを構成するモノマー成分は、特に好ましくは、モノマー成分の合計質量を基準として、テトラフルオロエチレン（ＴＦＥ）３５〜８５質量％、ビニリデンフルオリド（ＶＤＦ）０．１〜５０質量％及びＣＦ２＝ＣＦＲｆ（式中、Ｒｆは１〜８個の炭素原子を有するペルフルオロアルキル基である）１０〜３０質量％を含む。フッ素系ポリマーは、また、好ましくは、上記の配合比のテトラフルオロエチレン（ＴＦＥ）、ビニリデンフルオリド（ＶＤＦ）及びＣＦ２＝ＣＦＲｆのみからなる３元共重合体である。このようなフッ素系ポリマーは、透明性が高く、柔軟性が高く、加工性がよい。テトラフルオロエチレンの含有率が高すぎる場合には、結晶性が高くなり、透明性が悪くなる。また、融点が高く、加工性が低くなる。ビニリデンフルオリドの含有率が高すぎると、柔軟性は高くなるが、融点が低くなり、耐熱性に劣るようになる。一方、ＣＦ２＝ＣＦＲｆ（例えば、ＲｆはＣＦ３である）の含有率が高くなると、透明性が高くなる。また、融点が低くなるので、加工性がよくなる。さらに、柔軟性が向上して基材への追従性が改良される。但し、ＣＦ２＝ＣＦＲｆ（例えば、ＲｆはＣＦ３である）の含有率が高すぎると、融点が低くなりすぎて、耐熱性が不十分になる。 In addition, the polymer containing the above three types of monomers is excellent in processability and flexibility, so that a coating material in the form of a film can be easily attached to a curved substrate. In order to obtain a highly flexible polymer, the monomer component constituting the fluoropolymer is particularly preferably 35 to 85% by mass of tetrafluoroethylene (TFE), vinylidene fluoride (VDF) based on the total mass of the monomer components. ) in 0.1 to 50 wt% and CF 2 = CFR f (wherein R f is a perfluoroalkyl group having 1 to 8 carbon atoms) containing 10 to 30 mass%. The fluorine-based polymer is also preferably a terpolymer comprising only tetrafluoroethylene (TFE), vinylidene fluoride (VDF) and CF 2 ═CFR f in the above blending ratio. Such a fluoropolymer has high transparency, high flexibility, and good workability. When the content of tetrafluoroethylene is too high, the crystallinity increases and the transparency deteriorates. In addition, the melting point is high and processability is low. When the content of vinylidene fluoride is too high, the flexibility becomes high, but the melting point becomes low and the heat resistance becomes poor. On the other hand, when the content of CF 2 = CFR f (for example, R f is CF 3 ) increases, the transparency increases. In addition, since the melting point is lowered, workability is improved. Furthermore, the flexibility is improved and the followability to the substrate is improved. However, if the content of CF 2 = CFR f (for example, R f is CF 3 ) is too high, the melting point becomes too low and the heat resistance becomes insufficient.
フッ素系ポリマーは、本発明の目的及び効果を阻害しない範囲で、上記の３種のモノマー成分以外に、それらのモノマー成分と共重合可能な他のモノマー成分を含む４元以上の共重合体であってよい。例えば、共重合可能な他のモノマー成分としては、例えば、ＣＦ２＝ＣＦ−〔ＯＣＦ２ＣＦ（Ｒｆ’）〕ａＯＲｆ”（式中、Ｒｆ’は１〜８個の炭素原子を有するペルフルオロアルキレン基であり、Ｒｆ”は１〜８個の炭素原子を有するペルフルオロ脂肪族基であり、ａは０〜３の値である）が挙げられる。このような嵩高い第四のモノマー成分を追加することで、得られるポリマーの結晶化度を低下させ、耐屈曲性を改善することができる。耐屈曲性の改善は基材の曲面や凹凸などの形状への追従性を改良する。第四モノマー成分の含有率は、モノマーの合計質量を基準として、好ましくは１０％以下である。第四モノマー成分の含有率が高すぎると、被覆材料の耐熱性が不十分になることがあるからである。 The fluorine-based polymer is a quaternary or higher copolymer containing other monomer components copolymerizable with these monomer components in addition to the above three types of monomer components within a range not impairing the object and effect of the present invention. It may be. For example, other copolymerizable monomer components include, for example, CF 2 = CF- [OCF 2 CF (R f ′)] a OR f ″ (wherein R f ′ represents 1 to 8 carbon atoms. And R f ″ is a perfluoroaliphatic group having 1 to 8 carbon atoms, and a is a value of 0 to 3). By adding such a bulky fourth monomer component, the crystallinity of the resulting polymer can be reduced and the flex resistance can be improved. The improvement in the bending resistance improves the followability to shapes such as curved surfaces and irregularities of the base material. The content of the fourth monomer component is preferably 10% or less based on the total mass of the monomers. This is because if the content of the fourth monomer component is too high, the heat resistance of the coating material may be insufficient.
本発明の被覆材料に用いられるフッ素系ポリマーと、照明器具の保護被膜として使用される他の従来の樹脂との比較表を以下の表１に示す。 Table 1 below shows a comparison table between the fluorine-based polymer used in the coating material of the present invention and other conventional resins used as protective coatings for lighting fixtures.
また、本発明の被覆材料に含まれるフッ素系ポリマーは、本発明の目的及び効果を阻害しないかぎり、上記の特定のフッ素系ポリマー以外の他のフッ素系ポリマーを含むポリマーアロイであってよい。添加されうるフッ素系ポリマーとしては、フッ素系ゴムが挙げられる。フッ素系ゴムは被覆材料の曲げ弾性率を低下させ、伸びを上げることができるので、被覆材料の物性調整に用いることができる。 Further, the fluorine-based polymer contained in the coating material of the present invention may be a polymer alloy containing other fluorine-based polymers other than the specific fluorine-based polymer as long as the object and effect of the present invention are not impaired. Examples of the fluorine polymer that can be added include fluorine rubber. Since the fluorine-based rubber can lower the bending elastic modulus of the coating material and increase the elongation, it can be used for adjusting the physical properties of the coating material.
本発明の照明器具用被覆材料は、電球などの照明器具そのものを被覆するように直接的に使用されても、又は、照明器具のカバーを被覆するように間接的に使用されてもよい。本発明の被覆材料が被覆する基材は、ガラス、金属、プラスティック、ゴムなどであってよい。また、照明器具用被覆材料は、種々の形態であってよく、例えば、被膜となるフッ素系ポリマーを含む溶液の形態であっても、熱溶融可能なフッ素系ポリマー固体物であっても、あるいは、フッ素系ポリマーをフィルム状に加工したものであってもよい。本発明の被覆材料に用いられるフッ素系ポリマーは、柔軟性が高く、加工性に優れているという利点があり、そのことは、従来のフッ素系樹脂の粉体塗装による被覆に比べて、特に有利な効果をもたらす。例えば、被覆材料を加熱して溶融させ、押出成形などの適切な手段によりフィルム状に加工する。このフィルムに対してシリコーン粘着剤などの耐熱性、透明性に優れた粘着剤層を積層して、照明器具被覆用フィルム（照明器具保護用フィルム）を形成する。このような被覆用フィルムは、従来の粉体塗装のように施工時に焼き付けなどの加熱操作を必要とせず、粘着剤を介して容易に基材に接着できる。また、フッ素系ポリマーは柔軟性が高いので、基材の形状に対する追従性が良好で、曲面や凹凸を有する基材に対しても良好な密着性をもって被覆が行なえる。 The coating material for lighting fixtures of the present invention may be used directly to cover the lighting fixture itself such as a light bulb, or may be used indirectly to cover the cover of the lighting fixture. The substrate coated with the coating material of the present invention may be glass, metal, plastic, rubber or the like. Further, the coating material for lighting equipment may be in various forms, for example, in the form of a solution containing a fluorine-based polymer to be a film, or in the form of a heat-meltable fluorine-based polymer solid, or A film obtained by processing a fluoropolymer into a film may be used. The fluorine-based polymer used in the coating material of the present invention has the advantages of high flexibility and excellent workability, which is particularly advantageous as compared with the conventional powder coating of fluorine-based resin. It brings about an effect. For example, the coating material is heated and melted and processed into a film by an appropriate means such as extrusion. A pressure-sensitive adhesive layer excellent in heat resistance and transparency such as a silicone pressure-sensitive adhesive is laminated on this film to form a lighting fixture covering film (lighting fixture protecting film). Such a coating film does not require a heating operation such as baking at the time of construction unlike conventional powder coating, and can be easily adhered to a substrate via an adhesive. In addition, since the fluorine-based polymer has high flexibility, the followability with respect to the shape of the base material is good, and the base material having a curved surface or unevenness can be coated with good adhesion.
本発明の照明器具用被覆材料を、シリコーン系粘着剤層の上に本発明の照明器具用被覆材料から形成された被膜を有する照明器具保護用フィルムの形態で使用する場合には、フッ素系ポリマーの被膜の厚さは好ましくは５０〜６００μｍであり、シリコーン粘着剤層の厚さは好ましくは１０〜５０μｍである。被膜の厚さが厚すぎると、重量が大きくなりかつ経済性が悪くなり、薄すぎるとガラスが割れた際のガラス保持力が低下し、飛散防止効果が低下する。また、シリコーン系粘着剤層の厚さが１０μｍ未満であると、基材に対して十分な接着性を確保できなくなることがあり、一方、５０μｍを超えると、粘着剤のはみ出し等の問題を生ずる。なお、照明器具保護用フィルムの粘着剤層にはポリエステルなどの剥離ライナーを積層して、粘着剤層の保護を図ることもできる。 When the coating material for a lighting device of the present invention is used in the form of a film for protecting a lighting device having a coating formed from the coating material for the lighting device of the present invention on a silicone pressure-sensitive adhesive layer, a fluoropolymer The thickness of the coating is preferably 50 to 600 μm, and the thickness of the silicone pressure-sensitive adhesive layer is preferably 10 to 50 μm. If the thickness of the coating is too thick, the weight increases and the economic efficiency is deteriorated. If the coating is too thin, the glass holding power when the glass is broken is lowered, and the scattering prevention effect is lowered. Further, if the thickness of the silicone-based pressure-sensitive adhesive layer is less than 10 μm, sufficient adhesion to the substrate may not be ensured. On the other hand, if the thickness exceeds 50 μm, problems such as sticking of the pressure-sensitive adhesive occur. . In addition, release liners, such as polyester, can be laminated | stacked on the adhesive layer of the film for lighting fixture protection, and protection of an adhesive layer can also be aimed at.
以上のとおり、本発明は、照明器具のための被覆材料として記載してきたが、以下の用途も考えられる。例えば、強度のあるガラスクロスやアクリル樹脂、ポリカーボネートなどのプラスチックなどの建築用部材に本発明の保護用フィルムを貼り付け、可撓性、柔軟性を維持しながら、透明性、耐候性、防汚性、難燃性をなどの特性を付与することもできる。
さらに、プラスチック成形品を製造するときに、本発明の保護用フィルムが樹脂材料を外装するように配置して真空成形やインサート成形等で加熱成形を行なうことで保護フィルムに覆われた一体成形品を得ることもできる。例えば、屋外で使用される看板には意匠性を長期にわたって保持するために表面の防汚機能が必要である。従来のフッ素系ポリマーのフィルムでは、融点が高く、炭化水素系樹脂との一体成形を行なうことができなかったが、本発明の被覆材料では、アクリルやポリカーボネートなどの樹脂板に本発明の保護用フィルムを貼り付け、それを同時加熱一体成形して耐候性、防汚性などの特性を有する看板を得ることができる。
As described above, the present invention has been described as a coating material for a lighting fixture, but the following uses are also conceivable. For example, the protective film of the present invention is affixed to a building material such as a strong glass cloth, acrylic resin, or plastic such as polycarbonate to maintain transparency, weather resistance, and antifouling while maintaining flexibility and flexibility. Properties such as property and flame retardancy can also be imparted.
Furthermore, when manufacturing a plastic molded product, the protective film of the present invention is arranged so as to cover the resin material, and is integrally molded product covered with the protective film by heat molding by vacuum molding, insert molding or the like You can also get For example, a signboard used outdoors needs to have a surface antifouling function in order to maintain design properties over a long period of time. The conventional fluoropolymer film has a high melting point and could not be integrally molded with a hydrocarbon resin. However, the coating material of the present invention can be used for protecting the resin plate of acrylic or polycarbonate. It is possible to obtain a signboard having characteristics such as weather resistance and antifouling property by attaching a film and simultaneously heating and integrally forming the film.
実施例
１．サンプルの作製
まず、本発明の照明器具被覆用材料として、ダイニオン社製のフッ素樹脂「ＴＨＶ６１０」のフィルム（幅：３０ｃｍ、長さ：５０ｃｍ、厚さ：０．１ｍｍ）を用意する。このフィルムのシリコーン粘着剤として東レダウコーニング社製のシリコーン粘着剤を「ＳＤ４５６０」をフィルムの全面に塗布し（厚さ５０μｍ）、ライナー（剥離紙）をラミネートして照明器具保護用フィルムを作製した。この保護用フィルムを厚さ３ｍｍのガラス板に貼り、本発明のサンプルとした。
比較サンプルとして、飛散防止フィルムとして一般的に使用されている標準的な２軸延伸ポリエチレンテレフタレートフィルムであるスコッチティント「ＳＨ２ＣＬＡＲ」を使用した（厚さ０．１ｍｍ）。
Example 1. Preparation of Sample First, a film (width: 30 cm, length: 50 cm, thickness: 0.1 mm) of a fluororesin “THV610” manufactured by Dinion Co., Ltd. is prepared as a material for covering a lighting fixture of the present invention. A silicone adhesive made by Toray Dow Corning was applied to the entire surface of the film (thickness 50 μm) as a silicone adhesive for this film (thickness 50 μm), and a liner (release paper) was laminated to produce a film for protecting lighting equipment. . This protective film was attached to a 3 mm thick glass plate to obtain a sample of the present invention.
As a comparative sample, a scotch tint “SH2CLAR” which is a standard biaxially stretched polyethylene terephthalate film generally used as a scattering prevention film was used (thickness 0.1 mm).
２．曲げ弾性率試験
本発明のサンプルに対してＡＳＴＭ Ｄ７９０に規定される手順にしたがって、曲げ弾性率を測定した。その結果、本発明のサンプルの曲げ弾性率は１５０ＭＰａであった。
2. Flexural modulus test The flexural modulus was measured for the samples of the present invention according to the procedure specified in ASTM D790. As a result, the bending elastic modulus of the sample of the present invention was 150 MPa.
３．伸び率試験
本発明のサンプルに対してＡＳＴＭ Ｄ６３８に規定される手順にしたがって、破断点伸び率を測定した。その結果、本発明のサンプルの破断点伸び率は５００％であった。
3. Elongation Test The elongation at break was measured for the samples of the present invention according to the procedure specified in ASTM D638. As a result, the elongation at break of the sample of the present invention was 500%.
４．基材に対する形態追従性
本発明のサンプルを曲率半径Ｒが３０ｃｍであるガラス製曲面基材に対してラミネートした。その結果、基材の形態に密着して貼り合せることができた。
4). Form followability to substrate The sample of the present invention was laminated to a curved glass substrate having a radius of curvature R of 30 cm. As a result, it was possible to stick the substrates together in close contact.
５．耐熱性試験
本発明のサンプル及び比較サンプルを１８０℃のオーブンに１００時間入れた後のガラスの外観を観察した。試験の結果、本発明のサンプルでは、熱による外観の変化や光学的な変化は見られなかった。一方、比較サンプルでは、加熱によりフィルムが黄変して光透過性が低下した。また、フィルムとガラスの界面には気泡が発生し、フィルムの表面には微小な気泡が多数観察された。
5). Heat resistance test The appearance of the glass after the sample of the present invention and the comparative sample were placed in an oven at 180 ° C. for 100 hours was observed. As a result of the test, the sample of the present invention showed no change in appearance or optical change due to heat. On the other hand, in the comparative sample, the film was yellowed by heating and the light transmittance was lowered. In addition, bubbles were generated at the interface between the film and the glass, and many fine bubbles were observed on the surface of the film.
６．飛散防止試験
本発明のサンプル及び比較サンプルのガラスに衝撃を加え、破損時の破片の飛散防止効果を観察した。
厚さ２ｍｍ、縦横２００×２００ｍｍのガラス板を水平に配置し、その板面中心に対し、直径約６０ｍｍの鉄球を高さ２ｍの位置から自然落下をさせて試験を行なった。
本発明のサンプルのものは、比較サンプルのものと同様にガラスは飛散することなく、フィルムにより、保持され得るものであることが確認された。
6). Scattering prevention test An impact was applied to the glass of the sample of the present invention and the comparative sample, and the effect of preventing shattering of fragments at the time of breakage was observed.
A glass plate having a thickness of 2 mm and a length and width of 200 × 200 mm was horizontally arranged, and an iron ball having a diameter of about 60 mm was naturally dropped from a position of 2 m height with respect to the center of the plate surface.
It was confirmed that the sample of the present invention can be held by the film without scattering the glass as in the comparative sample.
Claims (3)
前記フッ素系ポリマーが、テトラフルオロエチレン（ＴＦＥ）、ビニリデンフルオリド（ＶＤＦ）、及び、ＣＦ ２ ＝ＣＦＲ ｆ （式中、Ｒ ｆ は１〜８個の炭素原子を有するペルフルオロアルキル基である）を必須のモノマー成分として含み、
前記フッ素系ポリマーが、前記テトラフルオロエチレン、前記ビニリデンフルオリド、及び、前記ＣＦ ２ ＝ＣＦＲ ｆ と共重合可能な他のモノマー成分を、任意のモノマー成分として、モノマー成分の合計質量を基準として１０％以下含み、
前記被膜は、曲げ弾性率が、ＡＳＴＭ Ｄ７９０試験法に従って測定したときに５０〜２００ＭＰａであり、
ＡＳＴＭ Ｄ６３８試験法に従って測定したときの前記被膜の破断点伸び率が５００〜６００％であり、
ＡＳＴＭ Ｄ２８６３試験法に従って測定したときの前記被膜の難燃性が６５〜８１であり、
前記粘着剤層が、シリコーン系粘着剤層である、照明器具保護用フィルム。 A film for protecting lighting equipment having a coating containing a fluorine-based polymer on an adhesive layer ,
The fluorine-based polymer, tetrafluoroethylene (TFE), vinylidene fluoride (VDF), and, (wherein, R f is a perfluoroalkyl radical having from 1 to 8 carbon atoms) CF 2 = CFR f and Contains as an essential monomer component,
The fluorine-based polymer is selected from the above-mentioned tetrafluoroethylene, the vinylidene fluoride, and another monomer component copolymerizable with the CF 2 ═CFR f as an arbitrary monomer component, and 10 based on the total mass of the monomer components. % Or less,
The coating, flexural modulus, Ri 50~200MPa der when measured according to ASTM D790 test method,
The elongation at break of the coating as measured according to ASTM D638 test method is 500-600%,
The flame retardancy of the coating as measured according to ASTM D2863 test method is 65-81,
The film for protecting lighting equipment, wherein the pressure-sensitive adhesive layer is a silicone-based pressure-sensitive adhesive layer.
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|---|---|---|---|---|
| JPH1050118A (en) * | 1996-05-31 | 1998-02-20 | Toto Ltd | Pollution-proof luminaire |
| JPH10109379A (en) * | 1996-10-04 | 1998-04-28 | Mitsubishi Plastics Ind Ltd | Glass laminate and fluororesin sheet for laminating glass |
| JP2002509275A (en) * | 1998-01-13 | 2002-03-26 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Antireflection polymer structure and method of manufacturing the same |
| JP2002240176A (en) * | 2001-02-22 | 2002-08-28 | Hiraoka & Co Ltd | Light pervious film material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1050118A (en) * | 1996-05-31 | 1998-02-20 | Toto Ltd | Pollution-proof luminaire |
| JPH10109379A (en) * | 1996-10-04 | 1998-04-28 | Mitsubishi Plastics Ind Ltd | Glass laminate and fluororesin sheet for laminating glass |
| JP2002509275A (en) * | 1998-01-13 | 2002-03-26 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Antireflection polymer structure and method of manufacturing the same |
| JP2002240176A (en) * | 2001-02-22 | 2002-08-28 | Hiraoka & Co Ltd | Light pervious film material |
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