JP6763597B2 - A protective sheet to be applied near the overhead wire of a utility pole - Google Patents
A protective sheet to be applied near the overhead wire of a utility pole Download PDFInfo
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- JP6763597B2 JP6763597B2 JP2017047455A JP2017047455A JP6763597B2 JP 6763597 B2 JP6763597 B2 JP 6763597B2 JP 2017047455 A JP2017047455 A JP 2017047455A JP 2017047455 A JP2017047455 A JP 2017047455A JP 6763597 B2 JP6763597 B2 JP 6763597B2
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- Prior art keywords
- vine
- repellent
- woven fabric
- resin
- overhead wire
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- 230000001681 protective effect Effects 0.000 title claims description 19
- 230000002940 repellent Effects 0.000 claims description 50
- 239000005871 repellent Substances 0.000 claims description 50
- 229920005989 resin Polymers 0.000 claims description 48
- 239000011347 resin Substances 0.000 claims description 48
- 239000004745 nonwoven fabric Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 16
- 229920003002 synthetic resin Polymers 0.000 claims description 12
- 239000000057 synthetic resin Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 description 18
- 239000000835 fiber Substances 0.000 description 10
- 229920000728 polyester Polymers 0.000 description 10
- 239000002253 acid Substances 0.000 description 8
- 229920001522 polyglycol ester Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920000915 polyvinyl chloride Polymers 0.000 description 7
- 239000004800 polyvinyl chloride Substances 0.000 description 7
- -1 polyethylene Polymers 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 238000007865 diluting Methods 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 238000007756 gravure coating Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Catching Or Destruction (AREA)
- Laminated Bodies (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Description
本発明は、電柱の架線部近傍に適用するための防つるシートに関し、特に高電圧が負荷されても絶縁破壊の生じにくい防つるシートに関するものである。 The present invention relates to a protective sheet for application to the vicinity of an overhead wire portion of a utility pole, and more particularly to a protective sheet in which dielectric breakdown is unlikely to occur even when a high voltage is applied.
従来より、種々の構築物表面に防つるシートを適用して、構築物表面上をつる植物の茎が這い上がるのを防止することが行われている（特許文献１）。たとえば、電柱の下部に防つるシートを巻回し、つる植物の茎が電柱表面を這い上がるのを防止することが行われている。 Conventionally, it has been practiced to apply a protective sheet to the surface of various structures to prevent the stems of vines from creeping up on the surface of the structure (Patent Document 1). For example, a protective sheet is wound around the bottom of the utility pole to prevent the stems of vines from creeping up the surface of the utility pole.
電柱の場合、その下部からだけではなく、電柱支線からもつる植物の茎が這い上がり、電柱の架線部近傍まで伸びることがある。架線部近傍までつる植物の茎が這い上がると、変圧器や配電器等の電気設備が短絡し漏電や停電等の事故が発生する恐れがある。したがって、電柱の架線部近傍にも、防つるシートを巻回したり張設したりして適用する必要がある。 In the case of utility poles, the stems of plants that hang from the utility pole branch lines may crawl up not only from the lower part but also to the vicinity of the overhead wire of the utility pole. If the stems of vines crawl up to the vicinity of the overhead wire, electrical equipment such as transformers and power distributors may be short-circuited, causing an accident such as an electric leakage or a power outage. Therefore, it is necessary to wind or stretch a protective sheet in the vicinity of the overhead wire portion of the utility pole.
しかるに、従来の防つるシートは、不織布等の布帛につる忌避剤を含浸又は塗工したものであった（特許文献２）。かかる防つるシートは耐電圧性が低く、電柱の架線部近傍に適用すると、絶縁破壊が生じ、架線部からの放電によって火災が発生する恐れがあった。 However, the conventional anti-staining sheet has been impregnated or coated with a vine repellent on a cloth such as a non-woven fabric (Patent Document 2). Such a protective sheet has a low withstand voltage resistance, and when applied to the vicinity of an overhead wire portion of a utility pole, dielectric breakdown may occur and a fire may occur due to discharge from the overhead wire portion.
本発明の課題は、電柱の架線部近傍に適用しても、絶縁破壊が生じにくい防つるシートを提供することにある。さらに、絶縁破壊が生じにくいと共に、防つる性を長期間維持しうる防つるシートを提供することにある。 An object of the present invention is to provide a protective sheet in which dielectric breakdown is unlikely to occur even when applied in the vicinity of an overhead wire portion of a utility pole. Further, it is an object of the present invention to provide a protective sheet capable of maintaining dielectric breakdown for a long period of time while being less likely to cause dielectric breakdown.
すなわち、本発明は、つる忌避剤を含有する樹脂層、不織布層及び厚さ３００μｍ以上の合成樹脂製無孔フィルム層の順に積層一体化されてなる、電柱の架線部近傍に適用するための防つるシートに関するものである。また、つる忌避剤を含有する樹脂層表面に、つる忌避剤を含有するオーバーコート層が設けられてなる、電柱の架線部近傍に適用するための防つるシートに関するものである。 That is, the present invention is a prevention for application to the vicinity of the overhead wire portion of a utility pole, which is formed by laminating and integrating a resin layer containing a vine repellent, a non-woven fabric layer, and a non-porous film layer made of synthetic resin having a thickness of 300 μm or more in this order. It is about a vine sheet. Further, the present invention relates to a protective sheet for application to the vicinity of an overhead wire portion of a utility pole, wherein an overcoat layer containing a vine repellent is provided on the surface of a resin layer containing a vine repellent.
本発明において、つる忌避剤を含有する樹脂層は、樹脂中につる忌避剤が分散されてなるものである。樹脂としては、ポリ塩化ビニル樹脂やポリエステル樹脂等が用いられる。特に、ポリ塩化ビニル樹脂は、電気絶縁性に優れているため、本発明で用いるのに適している。また、ポリエステル樹脂は、耐候性に優れているため、防つるシートを長寿命化しうる。つる忌避剤としては、従来公知のものが用いられるが、特にクロロトリルオキシプロピオン酸ポリグリコールエステルを用いるのが好ましい。樹脂層中のつる忌避剤の含有量は、２０〜５０重量％程度である。また、つる忌避剤を含有する樹脂層の厚みは、０．２〜０．４ｍｍ程度である。 In the present invention, the resin layer containing the vine repellent is formed by dispersing the vine repellent in the resin. As the resin, polyvinyl chloride resin, polyester resin and the like are used. In particular, the polyvinyl chloride resin is excellent in electrical insulation, and is therefore suitable for use in the present invention. Further, since the polyester resin has excellent weather resistance, the life of the protective sheet can be extended. As the vine repellent, conventionally known ones are used, but it is particularly preferable to use chlorotriloxypropionic acid polyglycol ester. The content of the vine repellent in the resin layer is about 20 to 50% by weight. The thickness of the resin layer containing the vine repellent is about 0.2 to 0.4 mm.
不織布層としては、従来公知のものを採用できるが、特にポリエステル繊維よりなる不織布であるのが好ましい。ポリエステル繊維は耐候性に優れているため、防つるシートを長寿命化しうる。特に、ポリエステル長繊維不織布であって、エンボス加工により全体に緻密化された不織布であるのが好ましい。エンボス加工により緻密化されていることで、電気絶縁性が高くなる。不織布層の重量は５０〜２００ｇ／ｍ2程度であり、その厚みは０．３〜０．６ｍｍ程度である。 As the non-woven fabric layer, conventionally known ones can be adopted, but a non-woven fabric made of polyester fiber is particularly preferable. Since the polyester fiber has excellent weather resistance, the life of the protective sheet can be extended. In particular, it is preferable that the polyester long fiber non-woven fabric is a non-woven fabric that has been densified as a whole by embossing. By being densified by embossing, the electrical insulation is improved. The weight of the non-woven fabric layer is about 50 to 200 g / m 2 , and the thickness thereof is about 0.3 to 0.6 mm.
不織布層には、つる忌避剤を含有する樹脂が飽充されていてもよい。この樹脂は、一般的に、つる忌避剤を含有する樹脂層を構成している樹脂である。すなわち、ポリ塩化ビニル樹脂やポリエステル樹脂等である。また、つる忌避剤も、一般的に樹脂層中のつる忌避剤と同一である。不織布層につる忌避剤を含有させることにより、防つるシートをより長寿命化しうる。 The non-woven fabric layer may be filled with a resin containing a vine repellent. This resin is generally a resin that constitutes a resin layer containing a vine repellent. That is, it is a polyvinyl chloride resin, a polyester resin, or the like. Also, the vine repellent is generally the same as the vine repellent in the resin layer. By including a vine repellent in the non-woven fabric layer, the life of the vine-preventing sheet can be extended.
不織布層の他面（つる忌避剤が含有されている樹脂層の反対側の面）には、厚さ３００μｍ以上の合成樹脂製無孔フィルム層が設けられている。厚さが３００μｍ未満になると、耐電圧が低くなり、防つるシートが絶縁破壊しやすくなるので、好ましくない。合成樹脂製フィルムとしては、ポリエチレンフィルム、ポリプロピレンフィルム、ポリエステルフィルム又はエチレン−酢酸ビニルフィルム等が用いられる。そして、この合成樹脂製フィルムは無孔である。有孔フィルムを用いると、耐電圧が低くなり、防つるシートが絶縁破壊しやすくなるので、好ましくない。 A non-porous film layer made of synthetic resin having a thickness of 300 μm or more is provided on the other surface of the non-woven fabric layer (the surface opposite to the resin layer containing the vine repellent). If the thickness is less than 300 μm, the withstand voltage becomes low and the dielectric breakdown of the protective sheet tends to occur, which is not preferable. As the synthetic resin film, a polyethylene film, a polypropylene film, a polyester film, an ethylene-vinyl acetate film or the like is used. And this synthetic resin film is non-perforated. It is not preferable to use a perforated film because the withstand voltage becomes low and the sheet to prevent insulation breaks down easily.
つる忌避剤を含有する樹脂層表面に、つる忌避剤を含有するオーバーコート層が設けられていてもよい。かかるオーバーコート層を設けることにより、樹脂層中のつる忌避剤の蒸散を少なくすることができ、防つるシートを長寿命化しうる。オーバーコート層は、アクリル樹脂等の樹脂で形成されたコート層中に、つる忌避剤が分散されてなるものである。オーバーコート層中のつる忌避剤としては、公知のものを用いうるが、前記したのと同一のクロロトリルオキシプロピオン酸ポリグリコールエステルを用いるのが好ましい。オーバーコート層中のつる忌避剤の含有量は、２０〜５０重量％程度であり、オーバーコート層の厚みは、０．０１〜０．１ｍｍ程度である。 An overcoat layer containing a vine repellent may be provided on the surface of the resin layer containing the vine repellent. By providing such an overcoat layer, the evaporation of the vine repellent in the resin layer can be reduced, and the life of the vine repellent sheet can be extended. The overcoat layer is formed by dispersing a vine repellent in a coat layer formed of a resin such as acrylic resin. As the vine repellent in the overcoat layer, known ones can be used, but it is preferable to use the same chlorotriloxypropionic acid polyglycol ester as described above. The content of the vine repellent in the overcoat layer is about 20 to 50% by weight, and the thickness of the overcoat layer is about 0.01 to 0.1 mm.
本発明に係る防つるシートは、以下の如き製造方法で得ることができる。まず、エンボス加工されたポリエステル長繊維不織布等の不織布を準備する。一方、つる忌避剤を含有する樹脂溶液を準備する。この樹脂溶液は、たとえば、ポリ塩化ビニル樹脂と希釈溶媒とを混合した液中に、クロロトリルオキシプロピオン酸ポリグリコールエステル等のつる忌避剤を混合分散して得ることができる。そして、不織布を樹脂溶液中に浸漬したり又は不織布表面に樹脂溶液を塗工し、不織布に樹脂溶液を付与する。この後、樹脂溶液中の希釈溶媒を蒸発させて、不織布の少なくとも一表面につる忌避剤を含有する樹脂層を形成する。この後、不織布の他表面（樹脂層が形成されている側と反対側の面）に、押出ラミネート法により、厚さ３００μｍ以上の合成樹脂製無孔フィルム層を設ける。なお、不織布の表裏面の両方に樹脂層が形成されている場合は、いずれかの面に、押出ラミネート法により、合成樹脂製無孔フィルム層を設ければよい。本発明では、押出ラミネート法を採用するために、不織布と積層されると同時に、強固に不織布と合成樹脂製無孔フィルムとが一体化する。 The protective sheet according to the present invention can be obtained by the following manufacturing method. First, a non-woven fabric such as an embossed polyester long fiber non-woven fabric is prepared. On the other hand, a resin solution containing a vine repellent is prepared. This resin solution can be obtained, for example, by mixing and dispersing a vine repellent such as chlorotriloxypropionic acid polyglycol ester in a mixture of a polyvinyl chloride resin and a diluting solvent. Then, the non-woven fabric is immersed in the resin solution or the surface of the non-woven fabric is coated with the resin solution to impart the resin solution to the non-woven fabric. After that, the diluting solvent in the resin solution is evaporated to form a resin layer containing a vine repellent on at least one surface of the nonwoven fabric. After that, a non-porous film layer made of synthetic resin having a thickness of 300 μm or more is provided on the other surface of the non-woven fabric (the surface opposite to the side on which the resin layer is formed) by an extrusion lamination method. When resin layers are formed on both the front and back surfaces of the non-woven fabric, a non-porous film layer made of synthetic resin may be provided on either surface by an extrusion lamination method. In the present invention, in order to adopt the extrusion laminating method, the non-woven fabric and the non-woven fabric made of synthetic resin are firmly integrated at the same time as being laminated with the non-woven fabric.
また、不織布の少なくとも一表面につる忌避剤を含有する樹脂層を形成した後、この樹脂層表面に、つる忌避剤を含有するコーティング液を塗布してもよい。コーティング液は、たとえば、アクリル樹脂を溶媒に溶解又は分散させた液中に、クロロトリルオキシプロピオン酸ポリグリコールエステル等のつる忌避剤を混合分散して得ることができる。塗布方法としては、従来公知の方法を採用することができ、たとえば、スプレー法、ロールコート法又はグラビアコート法等を採用することができる。 Further, after forming a resin layer containing a vine repellent on at least one surface of the non-woven fabric, a coating liquid containing a vine repellent may be applied to the surface of the resin layer. The coating liquid can be obtained, for example, by mixing and dispersing a vine repellent such as chlorotriloxypropionic acid polyglycol ester in a liquid in which an acrylic resin is dissolved or dispersed in a solvent. As the coating method, a conventionally known method can be adopted, and for example, a spray method, a roll coating method, a gravure coating method, or the like can be adopted.
本発明に係る防つるシートは、電線や変圧器等が設けられている電柱の上部、すなわち、電柱の架線部近傍に適用される。具体的には、架線部近傍の電柱の周囲を覆うようにして巻回して適用される。本発明に係る防つるシート全体の厚みは０．７〜１ｍｍ程度であり、柔軟性があり、容易に電柱に巻回することができる。 The protective sheet according to the present invention is applied to the upper part of a utility pole provided with an electric wire, a transformer, or the like, that is, in the vicinity of an overhead wire portion of the utility pole. Specifically, it is applied by winding it so as to cover the periphery of a utility pole near the overhead wire portion. The thickness of the entire protective sheet according to the present invention is about 0.7 to 1 mm, is flexible, and can be easily wound around a utility pole.
本発明に係る防つるシートは、つる忌避剤を含有する樹脂層、不織布層及び厚さ３００μｍ以上の合成樹脂製無孔フィルム層が積層一体化されたものであり、特に合成樹脂製無孔フィルム層が存在するので絶縁破壊しにくいと共に、つる忌避剤も蒸散しにくいという効果を奏するものである。 The anti-slip sheet according to the present invention is formed by laminating and integrating a resin layer containing a vine repellent, a non-woven fabric layer, and a synthetic resin non-porous film layer having a thickness of 300 μm or more, and in particular, a synthetic resin non-porous film. Since there is a layer, it is difficult to break the insulation, and the vine repellent is also hard to evaporate.
また、樹脂層表面に、つる忌避剤を含有するオーバーコート層を設けると、樹脂層中のつる忌避剤が蒸散しにくくなり、徐々に防つるシート表面に滲み出すため、防つるシートを長寿命化することができる。 Further, if an overcoat layer containing a vine repellent is provided on the surface of the resin layer, the vine repellent in the resin layer is less likely to evaporate and gradually exudes to the surface of the vine repellent, so that the vine repellent has a long life. Can be transformed into.
実施例１
目付１３０ｇ／ｍ2のポリエステル長繊維不織布を準備した。一方、ポリ塩化ビニル樹脂１００重量部を希釈溶媒（キシレン）に溶解させると共に、クロロトリルオキシプロピオン酸ポリグリコールエステル４０質量部を分散混合させて樹脂溶液を準備した。この樹脂溶液中にポリエステル長繊維不織布を浸漬した後、希釈溶媒を蒸発させて、ポリエステル長繊維不織布の表裏面に、クロロトリルオキシプロピオン酸ポリグリコールエステルを含有するポリ塩化ビニル樹脂層（厚さ０．３ｍｍ）を形成した。ポリエステル長繊維不織布の裏面に、押出ラミネート法にてポリエチレン製無孔フィルムを押し出した後、一対の加圧ローラー間を通し、ポリエステル長繊維不織布とポリエチレン製無孔フィルム（厚さ４００μｍ）とが積層一体化された防つるシートを得た。
Example 1
A polyester long fiber non-woven fabric having a basis weight of 130 g / m 2 was prepared. On the other hand, 100 parts by mass of polyvinyl chloride resin was dissolved in a diluting solvent (xylene), and 40 parts by mass of chlorotriloxypropionic acid polyglycol ester was dispersed and mixed to prepare a resin solution. After immersing the polyester long fiber non-woven fabric in this resin solution, the diluting solvent is evaporated, and a polyvinyl chloride resin layer (thickness 0) containing chlorotriloxypropionic acid polyglycol ester is formed on the front and back surfaces of the polyester long fiber non-woven fabric. .3 mm) was formed. A polyethylene non-woven film is extruded onto the back surface of the polyester long-fiber non-woven fabric by an extrusion laminating method, and then passed between a pair of pressure rollers to laminate the polyester long-fiber non-woven fabric and the polyethylene non-woven film (thickness 400 μm). Obtained an integrated anti-woven sheet.
実施例２
アクリル樹脂１００重量部を希釈溶媒（キシレン）に溶解させると共に、クロロトリルオキシプロピオン酸ポリグリコールエステル３０質量部を分散混合させてコーティング液を準備した。このコーティング液を、実施例１と同一の方法で得られたポリ塩化ビニル樹脂層にグラビアコート法にて塗布し、オーバーコート層（厚さ０．０２ｍｍ）を形成した。その後は、実施例１と同一の方法でポリエチレン製無孔フィルム（厚さ４００μｍ）を、ポリエステル長繊維不織布の裏面に積層一体化して、防つるシートを得た。
Example 2
A coating solution was prepared by dissolving 100 parts by weight of the acrylic resin in a diluting solvent (xylene) and dispersing and mixing 30 parts by mass of chlorotriloxypropionic acid polyglycol ester. This coating liquid was applied to the polyvinyl chloride resin layer obtained by the same method as in Example 1 by the gravure coating method to form an overcoat layer (thickness 0.02 mm). After that, a polyethylene non-porous film (thickness 400 μm) was laminated and integrated on the back surface of the polyester long fiber non-woven fabric by the same method as in Example 1 to obtain a protective sheet.
比較例
ポリエチレン製無孔フィルムを積層一体化しない他は、実施例１と同一の方法で防つるシートを得た。
Comparative Example A sheet to prevent was obtained by the same method as in Example 1 except that the polyethylene non-porous film was not laminated and integrated.
［絶縁破壊電圧及び絶縁破壊強さ］
実施例１、２及び比較例に係る防つるシートから試験片を採取し、絶縁破壊電圧及び絶縁破壊強さを、ＩＥＣ ６０２４３−１記載の方法に準拠して測定した。具体的な測定条件は、以下のとおりである。結果を表１に示した。
印加電圧及び時間；１．５ｋＶ×６０秒（５０Ｈｚの交流）
昇圧方式 ；短時間法で約０．２ｋＶ／秒
周囲媒質 ；２３℃の大気中
電極形状 ；直径２５ｍｍの円柱／直径７５ｍｍの円柱
[Dielectric breakdown voltage and dielectric breakdown strength]
Test pieces were taken from the anti-corrosion sheets according to Examples 1 and 2 and Comparative Examples, and the dielectric breakdown voltage and dielectric breakdown strength were measured according to the method described in IEC 60243-1. The specific measurement conditions are as follows. The results are shown in Table 1.
Applied voltage and time; 1.5 kV x 60 seconds (50 Hz AC)
Boost method; Approximately 0.2 kV / sec by short-time method Ambient medium; Atmospheric electrode shape at 23 ° C; Cylinder with a diameter of 25 mm / Cylinder with a diameter of 75 mm
［表１］ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
絶縁破壊電圧（ｋＶ） 絶縁破壊強さ（ｋＶ／ｍｍ）
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
実施例１ １４．６ ２１．２
実施例２ １５．０ ２０．３
比較例 １．８ ３．９
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
なお、絶縁破壊電圧及び絶縁破壊強さの値は、５個の試験片の平均値である。
[Table 1] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Dielectric breakdown voltage (kV) Dielectric breakdown strength (kV / mm)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Example 1 14.6 21.2
Example 2 15.0 20.3
Comparative example 1.8 3.9
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The values of the dielectric breakdown voltage and the dielectric breakdown strength are the average values of the five test pieces.
［つる忌避剤の持続性試験］
実施例１、２及び比較例に係る防つるシートから試験片を採取し、以下の促進暴露試験を行って、つる忌避剤の時間経過による蒸散量を測定した。すなわち、温度６３℃で相対湿度５０％の雰囲気下に試験片を置き、サンシャインカーボンアーク灯式の耐候性試験機（サンシャインウェザーメータ ＪＩＳ Ｂ７７５３）を用い、照射及び噴霧サイクル１２０分（１０２分間の照射、続いて１８分間の照射及び噴霧）の条件にて試験を行い、５００時間後のつる忌避剤の残存率を確認した。この結果を表２に示した。
[Persistence test of vine repellent]
Test pieces were collected from the anti-vine sheets according to Examples 1 and 2 and Comparative Examples, and the following accelerated exposure test was performed to measure the amount of transpiration of the vine repellent over time. That is, the test piece is placed in an atmosphere of a temperature of 63 ° C. and a relative humidity of 50%, and an irradiation and spray cycle of 120 minutes (102 minutes of irradiation) is performed using a sunshine carbon arc lamp type weather resistance tester (Sunshine Weather Meter JIS B7753). , Then, the test was carried out under the conditions of irradiation and spraying for 18 minutes), and the residual rate of the vine repellent after 500 hours was confirmed. The results are shown in Table 2.
ここで、つる忌避剤の残存量は、以下の測定方法により測定したものである。すなわち、１ｃｍ角の試験片を１００ｍｌの三角フラスコに入れて５０ｍｌのメタノールを加え、シェーカーを用いて、１４０ｒｐｍで３時間攪拌し、その後２３時間室温で放置し、さらに３０分間超音波処理した。得られた溶液を孔径０．４５μｍのディスクフィルターを用いて濾過し、濾液を測定用溶液とした。この測定用溶液を、高速液体クロマトグラフィーにかけて、つる忌避剤であるクロロトリルオキシプロピオン酸ポリグリコールエステルの定量チャートを得た。これを、試験前の試験片と試験後の試験片について行い、その比を求めて、残存率を算出した。 Here, the residual amount of the vine repellent is measured by the following measuring method. That is, a 1 cm square test piece was placed in a 100 ml Erlenmeyer flask, 50 ml of methanol was added, and the mixture was stirred at 140 rpm for 3 hours using a shaker, then left at room temperature for 23 hours, and then sonicated for another 30 minutes. The obtained solution was filtered using a disc filter having a pore size of 0.45 μm, and the filtrate was used as a measurement solution. This measurement solution was subjected to high performance liquid chromatography to obtain a quantitative chart of chlorotriloxypropionic acid polyglycol ester, which is a vine repellent. This was done for the test piece before the test and the test piece after the test, and the ratio was calculated to calculate the residual rate.
［表２］ ━━━━━━━━━━━━━━━━━
促進暴露試験
━━━━━━━━━━━━━━━━━
残存率 ５００時間後
━━━━━━━━━━━━━━━━━
実施例１ １５．８％
実施例２ ３０．６％
比較例 ９．６％
━━━━━━━━━━━━━━━━━
[Table 2] ━━━━━━━━━━━━━━━━━
Accelerated exposure test
━━━━━━━━━━━━━━━━━
Residual rate after 500 hours
━━━━━━━━━━━━━━━━━
Example 1 15.8%
Example 2 30.6%
Comparative example 9.6%
━━━━━━━━━━━━━━━━━
表１の結果から、実施例１及び２に係る防つるシートは、比較例に係る防つるシートに比べて、絶縁破壊電圧が高く、絶縁破壊強さしにくいことが分かる。また、表２の結果から、実施例１及び２に係る防つるシートは、比較例に係る防つるシートに比べてつる忌避剤が蒸散しにくく、防つるシートが長寿命化していることが分かる。 From the results in Table 1, it can be seen that the dielectric breakdown sheets according to Examples 1 and 2 have a higher dielectric breakdown voltage and less dielectric breakdown strength than the dielectric breakdown sheets according to Comparative Examples. Further, from the results in Table 2, it can be seen that the vine repellents are less likely to evaporate in the proof sheets according to Examples 1 and 2 as compared with the proof sheets according to Comparative Examples, and the life of the proof sheets is extended. ..
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