JP2021059090A - Waterproof sheet - Google Patents
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- JP2021059090A JP2021059090A JP2019185933A JP2019185933A JP2021059090A JP 2021059090 A JP2021059090 A JP 2021059090A JP 2019185933 A JP2019185933 A JP 2019185933A JP 2019185933 A JP2019185933 A JP 2019185933A JP 2021059090 A JP2021059090 A JP 2021059090A
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Abstract
【課題】表面に水が付着しにくい防水シート。【解決手段】目付量が40〜100g/m2のガラス製の布帛に塩化ビニル樹脂が含浸した繊維強化樹脂シート12と、水接触角が90°以上の撥水層14とを備えた防水シート10とした。ここで、撥水層14はフッ素化合物を含んだ紫外線硬化樹脂の硬化物であることが好ましい。この防水シートであれば水の濡れ性が小さく取扱性や軽量性に優れる。この防水シートは、トラックの幌、テント、工事現場のシートや農畜産業のハウス等の様々な用途に利用され得る。【選択図】図1PROBLEM TO BE SOLVED: To prevent water from adhering to a surface of a waterproof sheet. SOLUTION: A waterproof sheet 10 is provided with a fiber-reinforced resin sheet 12 in which a glass cloth having a grain size of 40 to 100 g / m2 is impregnated with a vinyl chloride resin, and a water-repellent layer 14 having a water contact angle of 90 ° or more. And said. Here, the water-repellent layer 14 is preferably a cured product of an ultraviolet curable resin containing a fluorine compound. This tarpaulin has low water wettability and is excellent in handleability and light weight. This tarpaulin can be used for various purposes such as truck hoods, tents, construction site sheets and agricultural and livestock industry houses. [Selection diagram] Fig. 1
Description
本発明は、防水シートに関する。 The present invention relates to a tarpaulin.
ターポリンと称されるシート等、種々の防水シートが、トラックの幌、テント、工事現場のシートや農畜産業のハウス等の様々な用途に利用されている。一般に、これらには風や汚れに強く、強度が求められている(特許文献1、2)。 Various waterproof sheets such as tarpaulins are used for various purposes such as truck hoods, tents, construction site sheets and agricultural and livestock industry houses. In general, these are required to be strong against wind and dirt (Patent Documents 1 and 2).
しかし、シートの表面に水が付着していると、液だれが生じ収納作業等の取扱いに劣るばかりか重量が増して防水シートを用いる構造材に負荷のかかるものであった。
本発明は、上記事情に鑑みてなされたものであって、表面に水が付着しにくい防水シートを目的とする。
However, if water adheres to the surface of the sheet, dripping occurs, which is inferior in handling such as storage work and increases in weight, which imposes a load on the structural material using the waterproof sheet.
The present invention has been made in view of the above circumstances, and an object of the present invention is a waterproof sheet in which water does not easily adhere to the surface.
本発明の防水シートは、目付量が40〜100g/m2のガラス製の布帛に塩化ビニル樹脂が含浸した繊維強化樹脂シートと、水接触角が90°以上の撥水層とを備えたものである。
ここで、布帛としては織布または不織布が望ましい。
また、撥水層としてはフッ素化合物を含んだ紫外線硬化樹脂の硬化物であることが望ましい。
The waterproof sheet of the present invention includes a fiber-reinforced resin sheet in which a glass cloth having a grain size of 40 to 100 g / m 2 is impregnated with a vinyl chloride resin, and a water-repellent layer having a water contact angle of 90 ° or more. Is.
Here, as the cloth, a woven cloth or a non-woven fabric is desirable.
Further, the water-repellent layer is preferably a cured product of an ultraviolet curable resin containing a fluorine compound.
本発明の防水シートであれば、表面に水が付着しにくい。 With the waterproof sheet of the present invention, water does not easily adhere to the surface.
図1に示すように、本実施形態例の防水シート10は、繊維強化樹脂シート12と撥水層14とを備えたものである。
本発明で繊維強化樹脂シート12はガラス製の布帛に塩化ビニル樹脂が含浸したものである。
布帛は目付量が40〜100g/m2のものである。目付量が40g/m2以上であることから凡そ防水シートとして充分な強度を発揮できる。他方、目付量が100g/m2以下であることから、軽量性、柔軟性を担保できる。また、布帛に充分な量の塩化ビニル樹脂が含浸されたシートを得ることができる。
布帛をガラス製とすることで、線膨張係数が小さくなり温度による形状変化を小さくできる。
ガラス製の布帛としては、織布、不織布、メッシュ、レース、ニット、紙などが挙げられる。中でも、織布または不織布であれば、樹脂の含浸と保持性を良好にし易く、樹脂が流れ落ちてシートに穴があくおそれを抑制できる。
塩化ビニル樹脂はシートとして充分な柔軟性を担保する為に軟質塩化ビニル樹脂が相応しい。
例えば、ゾル状またはペースト状のものを用いることができ、フタル酸系、アジピン酸系、リン酸系などの各種可塑剤を適宜配合してもよい。ポリ塩化ビニル樹脂の例として、東ソー社製のペースト塩ビやカネカ社製のペーストPVC等が挙げられる。
As shown in FIG. 1, the
In the present invention, the fiber reinforced
The fabric has a basis weight of 40 to 100 g / m 2 . Since the basis weight is 40 g / m 2 or more, it can exhibit sufficient strength as a waterproof sheet. On the other hand, since the basis weight is 100 g / m 2 or less, light weight and flexibility can be ensured. Further, it is possible to obtain a sheet in which the cloth is impregnated with a sufficient amount of vinyl chloride resin.
By making the cloth made of glass, the coefficient of linear expansion becomes small and the shape change due to temperature can be made small.
Examples of the glass fabric include woven fabric, non-woven fabric, mesh, lace, knit, and paper. Above all, if it is a woven fabric or a non-woven fabric, it is easy to improve the impregnation and retention of the resin, and it is possible to suppress the possibility that the resin will run down and make holes in the sheet.
As the vinyl chloride resin, a soft vinyl chloride resin is suitable in order to ensure sufficient flexibility as a sheet.
For example, a sol-like or paste-like one can be used, and various plasticizers such as phthalic acid-based, adipic acid-based, and phosphoric acid-based plasticizers may be appropriately blended. Examples of the polyvinyl chloride resin include paste PVC manufactured by Tosoh Corporation and paste PVC manufactured by Kaneka Corporation.
撥水層は水接触角が90°以上のものである。90°未満であると本発明で求める撥水性を発揮できない。95°以上がより好ましく、100°以上がさらに好ましい。
撥水層としてはフッ素化合物を含んだ紫外線硬化樹脂の硬化物であることが望ましい。撥水性、生産性、塩化ビニル樹脂との密着性に優れているからである。
紫外線硬化樹脂としては、多官能性(メタ)アクリレート、単官能性(メタ)アクリレート、多官能性ウレタンアクリレートや活性エネルギー線硬化性ポリマー等が挙げられる。市販されているものとして、東亞合成社の「アロニックス(登録商標)」、三菱ケミカル社の「紫光」、根上工業社の「アートレジン」、ダイセル・オルネクス社の「EBECRYL(登録商標)」、共栄社化学社の「ウレタンアクリレート」「ライトアクリレート」、新中村化学工業社の「NKエステル」「NKオリゴ」、DIC社の「ルクシディア(登録商標)」などが挙げられる。これらの紫外線硬化樹脂を単独で用いても、複数種類を混合したものを用いても良い。
フッ素化合物としては、例えば、ポリフルオロポリエーテル基、ポリフルオロアルキレン基、およびポリフルオロアルキル基からなる群から選ばれる1つ以上の基を有する有機ケイ素化合物を挙げることができる。ポリフルオロポリエーテル基とは、ポリフルオロアルキレン基とエーテル性酸素原子とが交互に結合した構造を有する2価の基のことである。
その他、必要に応じて種々の添加物を含有させることができる。例えば、防汚剤、シリカ粒子、重合開始剤、紫外線吸収剤、有機溶媒などが挙げられる。
防汚剤として具体的には、AGC社製の「SURECO(登録商標)AF」シリーズ、信越化学工業社製の「SHIN−ETSU SUBELYN(登録商標)」シリーズ、ダイキン工業社製の「オプツール」シリーズ、フロロテクノロジー社製「フロロサーフ(登録商標)」シリーズ、ハーベス社製「DURASURF」シリーズ、ネオス社製「フタージェント」シリーズが市販されている。
このような撥水層の形成は、各成分を溶剤(例えば、メチルエチルケトン等)に溶解してコート液とし、これを塗工して塗膜を形成し、所定の紫外線を照射して硬化処理することが好適である。
The water-repellent layer has a water contact angle of 90 ° or more. If it is less than 90 °, the water repellency required by the present invention cannot be exhibited. 95 ° or more is more preferable, and 100 ° or more is further preferable.
The water-repellent layer is preferably a cured product of an ultraviolet curable resin containing a fluorine compound. This is because it is excellent in water repellency, productivity, and adhesion to vinyl chloride resin.
Examples of the ultraviolet curable resin include polyfunctional (meth) acrylate, monofunctional (meth) acrylate, polyfunctional urethane acrylate, and active energy ray-curable polymer. Commercially available products include Toagosei's "Aronix (registered trademark)", Mitsubishi Chemical's "Shikou", Negami Kogyo's "Art Resin", Dicel Ornex's "EBECRYL (registered trademark)", and Kyoeisha. Examples include "urethane acrylate" and "light acrylate" from Chemical Corporation, "NK ester" and "NK oligo" from Shin-Nakamura Chemical Industry Co., Ltd., and "Luxidia (registered trademark)" from DIC Corporation. These ultraviolet curable resins may be used alone or in admixture of a plurality of types.
Examples of the fluorine compound include an organosilicon compound having one or more groups selected from the group consisting of a polyfluoropolyether group, a polyfluoroalkylene group, and a polyfluoroalkyl group. The polyfluoropolyether group is a divalent group having a structure in which polyfluoroalkylene groups and etheric oxygen atoms are alternately bonded.
In addition, various additives can be contained as needed. For example, antifouling agents, silica particles, polymerization initiators, ultraviolet absorbers, organic solvents and the like can be mentioned.
Specifically, as an antifouling agent, AGC's "SURECO (registered trademark) AF" series, Shin-Etsu Chemical's "SHIN-ETSU SUBELYN (registered trademark)" series, and Daikin Industries'"Optur" series. , Fluorotechnology's "Fluorosurf (registered trademark)" series, Harves'"DURASURF" series, and Neos's "Futergent" series are commercially available.
To form such a water-repellent layer, each component is dissolved in a solvent (for example, methyl ethyl ketone, etc.) to prepare a coating liquid, which is applied to form a coating film, which is then irradiated with a predetermined ultraviolet ray to cure it. Is preferable.
防水シートとしては、厚さが0.2〜1.5mmであることが好ましい。0.2mm以上であることで強度に優れ、1.5mm以下であることで、柔軟性の点で好ましい。
繊維強化樹脂シートは厚さが0.2〜1.5mmであることが好ましい。0.2mm以上であることで強度に優れ、1.5mm以下であることで、柔軟性や軽量性を確保し易いので好ましい。
撥水層は、厚さが5〜20μmであることが好ましい。5μm以上であることで撥水性能に優れ、20μm以下であることで、充分な撥水性能と生産コストの両面で優れるので好ましい。
撥水層は用途に応じて片面でよいし、又、両面に設けられてもよい。
また、本発明の趣旨を逸脱しない範囲内で、繊維強化樹脂シートと撥水層の他にも任意の層を有していても良い。但し、撥水層は表面に位置することが必要である。
The waterproof sheet preferably has a thickness of 0.2 to 1.5 mm. When it is 0.2 mm or more, it is excellent in strength, and when it is 1.5 mm or less, it is preferable in terms of flexibility.
The fiber reinforced resin sheet preferably has a thickness of 0.2 to 1.5 mm. When it is 0.2 mm or more, it is excellent in strength, and when it is 1.5 mm or less, it is easy to secure flexibility and light weight, which is preferable.
The water-repellent layer preferably has a thickness of 5 to 20 μm. When it is 5 μm or more, it is excellent in water repellency, and when it is 20 μm or less, it is excellent in both sufficient water repellency and production cost, which is preferable.
The water-repellent layer may be provided on one side or on both sides depending on the intended use.
Further, an arbitrary layer may be provided in addition to the fiber reinforced resin sheet and the water-repellent layer as long as the gist of the present invention is not deviated. However, the water repellent layer needs to be located on the surface.
厚さ0.1mm、目付量100g/m2のガラス製織布(ガラスクロス)(商品名:H100、ユニチカ社製)に、ポリ塩化ビニル樹脂(商品名:ペーストPVC、カネカ社製)を含浸被覆させて、ガラス製織布とポリ塩化ビニル樹脂からなる、厚さ0.3mmの繊維強化樹脂シートを作製した。
他方、紫外線硬化樹脂(「アロニックス(登録商標)」東亞合成社製)と紫外線硬化樹脂(「アートレジン」根上工業社製)をMEK(メチルエチルケトン)に溶解した混合物にフッ素系撥水剤(商品名:「SHINETSU−SBELYN(登録商標)」、信越化学社製)を配合してコート液を調製した。フッ素系撥水剤はコート液に対して1質量%(実施例1)、3質量%(実施例2)、5質量%(実施例3)配合させた。
上記繊維強化樹脂シートの片面に、フローコートにより、上記コート液を塗工して、厚さ15μmの塗膜を形成した。この塗膜に対して、紫外線を照射量1000mJにて照射して、硬化処理し、撥水層を形成した。
得られた防水シートについて、撥水層の水接触角と、各防水シートに水を散布して不着性を評価した。
また、ガラス製織布を厚さ0.22mm、目付量40g/m2のガラス製不織布(商品名:SB-040、オリベスト製)に変更したこと以外は実施例1と同様にして防水シートを製造し、評価した(実施例4)。
比較として、実施例1で用いた繊維強化樹脂シートに撥水層を形成していないものについても同様に接触角と水の不着性を評価した。
A glass woven cloth (glass cloth) with a thickness of 0.1 mm and a grain size of 100 g / m 2 (trade name: H100, manufactured by Unitika) is impregnated with polyvinyl chloride resin (trade name: paste PVC, manufactured by Kaneka). By coating, a fiber-reinforced resin sheet having a thickness of 0.3 mm was prepared, which was made of a glass woven cloth and a polyvinyl chloride resin.
On the other hand, a fluorine-based water repellent (trade name) is a mixture of an ultraviolet curable resin (“Aronix (registered trademark)” manufactured by Toagosei Co., Ltd.) and an ultraviolet curable resin (“Art Resin” manufactured by Negami Kogyo Co., Ltd.) dissolved in MEK (methyl ethyl ketone). : "SHINETSU-SBELYN (registered trademark)" (manufactured by Shin-Etsu Chemical Co., Ltd.) was blended to prepare a coating solution. The fluorine-based water repellent was blended in an amount of 1% by mass (Example 1), 3% by mass (Example 2), and 5% by mass (Example 3) with respect to the coating liquid.
The coating liquid was applied to one side of the fiber-reinforced resin sheet by flow coating to form a coating film having a thickness of 15 μm. The coating film was irradiated with ultraviolet rays at an irradiation amount of 1000 mJ and cured to form a water-repellent layer.
Regarding the obtained waterproof sheet, the water contact angle of the water-repellent layer and the non-adhesiveness were evaluated by spraying water on each waterproof sheet.
Further, the tarpaulin was used in the same manner as in Example 1 except that the glass woven fabric was changed to a glass non-woven fabric (trade name: SB-040, manufactured by Olivest) having a thickness of 0.22 mm and a grain size of 40 g / m 2. Manufactured and evaluated (Example 4).
For comparison, the contact angle and the non-adhesiveness of water were similarly evaluated for the fiber-reinforced resin sheet used in Example 1 in which the water-repellent layer was not formed.
表1に示されるように、本実施例のものであれば水が付着しにくいものであった。 As shown in Table 1, in the case of this example, it was difficult for water to adhere.
本発明の防水シートは、トラックの幌、テント、工事現場のシートや農畜産業のハウス等の様々な用途に利用され得る。 The waterproof sheet of the present invention can be used for various purposes such as a truck hood, a tent, a sheet at a construction site, and a house in the agriculture and livestock industry.
10 防水シート
12 繊維強化樹脂シート
14 撥水層
10
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019185933A JP2021059090A (en) | 2019-10-09 | 2019-10-09 | Waterproof sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2019185933A JP2021059090A (en) | 2019-10-09 | 2019-10-09 | Waterproof sheet |
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| JP2021059090A true JP2021059090A (en) | 2021-04-15 |
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| JP2019185933A Pending JP2021059090A (en) | 2019-10-09 | 2019-10-09 | Waterproof sheet |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0361041A (en) * | 1989-07-29 | 1991-03-15 | Dynic Corp | Sheet having water/oil repellency and preparation thereof |
| JPH05269943A (en) * | 1992-03-30 | 1993-10-19 | Yamade:Kk | Waterproof sheet |
| JP2010052370A (en) * | 2008-08-29 | 2010-03-11 | Hiraoka & Co Ltd | Transparent composite sheet |
| JP2012166490A (en) * | 2011-02-16 | 2012-09-06 | Asahi Organic Chemicals Industry Co Ltd | Painted molded article |
-
2019
- 2019-10-09 JP JP2019185933A patent/JP2021059090A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0361041A (en) * | 1989-07-29 | 1991-03-15 | Dynic Corp | Sheet having water/oil repellency and preparation thereof |
| JPH05269943A (en) * | 1992-03-30 | 1993-10-19 | Yamade:Kk | Waterproof sheet |
| JP2010052370A (en) * | 2008-08-29 | 2010-03-11 | Hiraoka & Co Ltd | Transparent composite sheet |
| JP2012166490A (en) * | 2011-02-16 | 2012-09-06 | Asahi Organic Chemicals Industry Co Ltd | Painted molded article |
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