JP2020066672A - Aqueous coating material composition and jointless finishing construction method of exterior wall by using the same - Google Patents
Aqueous coating material composition and jointless finishing construction method of exterior wall by using the same Download PDFInfo
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- JP2020066672A JP2020066672A JP2018199695A JP2018199695A JP2020066672A JP 2020066672 A JP2020066672 A JP 2020066672A JP 2018199695 A JP2018199695 A JP 2018199695A JP 2018199695 A JP2018199695 A JP 2018199695A JP 2020066672 A JP2020066672 A JP 2020066672A
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- coating material
- material composition
- water
- wall
- thickness
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- 238000000576 coating method Methods 0.000 title claims abstract description 117
- 239000000463 material Substances 0.000 title claims abstract description 102
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- 238000010276 construction Methods 0.000 title abstract description 6
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- 239000004576 sand Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 11
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- 239000000565 sealant Substances 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
本発明は、建物の外壁に２〜５ｍｍ厚に塗付し、該外壁に様々な凹凸模様から成る意匠性と、断熱性を付与する一液型の水系塗材組成物に関し、また、複数の外壁材の側端部が突き合わせて下地に装着されている外壁の突き合わせ部分の表面に該水系塗材組成物を塗付することで外壁を目地の無い状態に仕上げることが可能な外壁の無目地仕上げ工法に関する。 The present invention relates to a one-pack type water-based coating material composition which is applied to the outer wall of a building in a thickness of 2 to 5 mm, and which has various design features of unevenness and heat insulation properties. An outer wall seamless joint capable of finishing the outer wall in a joint-free state by applying the water-based coating material composition to the surface of the abutting portion of the outer wall where the side ends of the outer wall material are butted against each other Regarding finishing method.
従来、建物の屋根、外壁面、内壁面等その他の設備等を塗装するための組成物であって、特に断熱層を形成するための断熱性、防水性及び遮音性を備えた塗材として、中空ビーズと、アクリル系樹脂エマルジョンと、機能保持剤とを含む断熱性塗材であって、前記中空ビーズが全容量の４５〜５０容量％であり、且つ前記機能保持剤として高沸点オイル、粘性調整剤、成膜助剤及び消泡剤を含むことを特徴とする断熱性塗材が提案されている（特許文献１）。 Conventionally, a composition for coating other equipment such as a roof of a building, an outer wall surface, an inner wall surface, etc., particularly as a coating material having heat insulating properties for forming a heat insulating layer, waterproof property, and sound insulating property, A heat insulating coating material containing hollow beads, an acrylic resin emulsion and a function-retaining agent, wherein the hollow beads account for 45 to 50% by volume of the total volume, and the function-retaining agent has a high boiling point oil and a viscosity. A heat-insulating coating material characterized by containing a regulator, a film-forming aid and a defoaming agent has been proposed (Patent Document 1).
しかしながら、特許文献１に示される断熱性塗材は、中空ビーズの平均粒径が約５〜１５μｍと極めて小さく（特許文献１の明細書段落００２０）、塗材としての塗付厚みも０．６ｍｍ厚と示されていて（同段落００３２）、該断熱性塗材では２〜５ｍｍ厚みに塗付して意匠性を付与することが難しいという課題がある。 However, the heat-insulating coating material disclosed in Patent Document 1 has an extremely small average particle diameter of hollow beads of about 5 to 15 μm (paragraph 0020 in the specification of Patent Document 1), and the coating thickness of the coating material is 0.6 mm. The thickness is indicated (paragraph 0032 of the same paragraph), and there is a problem that it is difficult to apply the heat insulating coating material to a thickness of 2 to 5 mm to give designability.
一方、外壁の無目地構造として、複数の外壁材を，互いにその側端部を突き合せて下地材に装着すると共に，上記側端部の突き合せ部分の表面側には弾性目地処理材を被覆してなり，また，該弾性目地処理材の内部には，多数の穴を有し該弾性目地処理材が貫通可能な多穴シートを配置し，かつ上記弾性目地処理材の表面には弾性塗料を被覆してなる外壁の無目地構造であって，上記多穴シートは，上記外壁材の側端部を突き合せることによって形成される目地線に沿った長径部と，上記目地線に直交する方向に沿うと共に上記長径部よりも短い短径部とからなる開口部分を有し，かつ上記多穴シートにおける１ｃｍ2あたりの開口数は１０〜６０個であることを特徴とする外壁の無目地構造が提案されている（特許文献２）。 On the other hand, as a jointless structure of the outer wall, a plurality of outer wall materials are attached to the base material by abutting their side edges with each other, and the surface side of the abutting portion of the side edges is covered with an elastic joint treatment material. In addition, a multi-hole sheet having a large number of holes and through which the elastic joint treatment material can penetrate is arranged inside the elastic joint treatment material, and an elastic coating material is provided on the surface of the elastic joint treatment material. And a multi-hole sheet having a long-diameter portion along a joint line formed by abutting side edges of the outer wall member, and the multi-hole sheet is orthogonal to the joint line. A jointless joint of an outer wall, which has an opening portion formed along a direction and having a short diameter portion shorter than the long diameter portion, and the number of openings per cm 2 in the multi-hole sheet is 10 to 60. A structure has been proposed (Patent Document 2).
しかしながら、特許文献２に示される外壁の無目地構造は、弾性目地処理材を使用すると共に、該弾性目地処理材が貫通可能な特定の多穴シートを配置した上で弾性塗材で仕上げる必要があるため、施工に手間が掛かるという課題がある。 However, the jointless structure of the outer wall shown in Patent Document 2 needs to use an elastic joint treatment material, and to arrange a specific multi-hole sheet through which the elastic joint treatment material can penetrate before finishing with an elastic coating material. Therefore, there is a problem that the construction is troublesome.
本発明の課題は、外壁に２〜５ｍｍ厚みに塗付して様々な凹凸模様から成る意匠性と、断熱性を付与することが出来ると共に、複数の外壁材が互いにその側端部を突き合わせて下地に装着されている外壁の該突き合わせ部分に塗付しても、突合せ部分の伸縮によってひび割れが生じることが無い水系塗材組成物を提供し、また、該水系塗材組成物を使用することで、複数の外壁材が互いにその側端部を突き合わせて下地に装着されている外壁において、該突き合わせ部分に弾性目地材、多穴シートを使用した上で弾性塗料で被覆するという複雑な仕様が不要で、施工が簡単な、外壁の無目地仕上げ工法を提供することにある。 An object of the present invention is to apply a thickness of 2 to 5 mm to an outer wall so as to provide design and various heat insulation properties and to provide heat insulating properties. To provide a water-based coating material composition that does not cause cracks due to expansion and contraction of the butt portion even when applied to the butt portion of the outer wall attached to the base, and to use the water-based coating material composition. In the outer wall where a plurality of outer wall materials are attached to the base by abutting their side end portions against each other, a complicated specification of using elastic joint material and a multi-hole sheet on the abutting portion and coating with an elastic paint is used. It is to provide a jointless finishing method for outer walls that is unnecessary and easy to construct.
上記課題を解決するため、請求項１記載の発明は、アクリル樹脂系エマルジョンと、充填材と、骨材と、顔料と、増粘剤と、成膜助剤と、無機中空フィラーと、長さ２〜７ｍｍのビニロン繊維と、水と、から成り、組成物全体１００重量部に対して、無機中空フィラーは２０〜３０重量部、ビニロン繊維は０．２〜０．４重量部、樹脂固形分は５〜１０重量部であり、２〜５ｍｍ厚みに塗付し凹凸模様から成る意匠性を付与することが可能であり、且つ塗装下地に２〜５ｍｍ厚みに２回塗付することを特徴とする水系塗材組成物を提供する。 In order to solve the above problems, the invention according to claim 1 provides an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, a film-forming aid, an inorganic hollow filler, and a length. It is composed of 2 to 7 mm vinylon fiber and water, and 20 to 30 parts by weight of inorganic hollow filler, 0.2 to 0.4 parts by weight of vinylon fiber, and resin solid content based on 100 parts by weight of the entire composition. Is 5 to 10 parts by weight, and can be applied to a thickness of 2 to 5 mm to give a design property consisting of a concavo-convex pattern, and is applied twice to a coating base to a thickness of 2 to 5 mm. An aqueous coating material composition is provided.
請求項２記載の発明は、前記無機中空フィラーは、火山性細粒ガラス質凝灰岩の球状発泡体とガラス発泡体とから成ることを特徴とする請求項１記載の水系塗材組成物を提供する。 The invention according to claim 2 provides the water-based coating material composition according to claim 1, characterized in that the inorganic hollow filler comprises a spherical foam of volcanic fine-grain vitreous tuff and a glass foam. .
請求項３記載の発明は、前記無機中空フィラーは、平均粒径が２００〜４００μｍの火山性細粒ガラス質凝灰岩の球状発泡体と、平均粒径が１.０〜１.４ｍｍのガラス発泡体とから成ることを特徴とする請求項１又は請求項２に記載の水系塗材組成物を提供する。 In the invention according to claim 3, the inorganic hollow filler is a spherical foam of volcanic fine-grain vitreous tuff having an average particle diameter of 200 to 400 µm, and a glass foam having an average particle diameter of 1.0 to 1.4 mm. The water-based coating material composition according to claim 1 or 2, comprising:
請求項４記載の発明は、複数の外壁材を、互いにその側端部を突き合わせて下地に装着し、該側端部の突き合わせ部分の表面に請求項１乃至請求項３のいずれかに記載の水系塗材組成物を塗付して無目地仕上げとする外壁の無目地仕上げ工法であって、突き合わせ部分の表面に必要によりシーラーを塗付し、次に請求項１乃至請求項３のいずれかに記載の水系塗材組成物を２〜５ｍｍ厚みに塗付して突き合わせ部分の不陸を調整し、次に請求項１乃至請求項３のいずれかに記載の水系塗材組成物を２〜５ｍｍ厚みに塗付して仕上げることを特徴とする外壁の無目地仕上げ工法を提供する。 In the invention according to claim 4, a plurality of outer wall members are attached to a base by abutting their side end portions against each other, and the abutted portion of the side end portions has a surface thereof abutted with each other, and the outer wall member is attached to a surface of the base portion. A jointless finishing method for an outer wall, in which a water-based coating material composition is applied to make a jointless finish, wherein a sealer is applied to the surface of the abutting portion if necessary, and then the sealant is applied. The water-based coating material composition according to claim 2 is applied to a thickness of 2 to 5 mm to adjust the unevenness of the abutting portions, and then the water-based coating material composition according to any one of claims 1 to 3 is added to 2 to 5 mm. Provided is a jointless finishing method for an outer wall, which is characterized by being applied to a thickness of 5 mm for finishing.
請求項５記載の発明は、さらに砂壁状塗料組成物を塗付することを特徴とする請求項４に記載の外壁の無目地仕上げ工法を提供する。 The invention according to claim 5 further provides a sand wall coating composition, which provides the jointless finishing method for the outer wall according to claim 4.
請求項６記載の発明は、砂壁状塗料組成物は遮熱性を有することを特徴とする請求項５記載の外壁の無目地仕上げ工法を提供する。 The invention according to claim 6 provides the jointless finishing method for the outer wall according to claim 5, characterized in that the sand wall coating composition has a heat-shielding property.
本発明の水系塗材組成物は、外壁に２〜５ｍｍ厚みに塗布して凹凸模様からなる意匠性と断熱性を付与する効果がある。また複数の外壁材が互いにその側端部を突き合わせて下地に装着されている外壁の該突き合わせ部分に塗付しても、突合せ部分の伸縮によってひび割れが生じることが無いという効果がある。 The water-based coating material composition of the present invention is applied to the outer wall to have a thickness of 2 to 5 mm, and has an effect of imparting a design property having a concavo-convex pattern and heat insulating property. Further, even if a plurality of outer wall members are applied to the abutting portion of the outer wall mounted on the base by abutting the side ends thereof, there is an effect that cracks do not occur due to expansion and contraction of the abutting portion.
また、本発明の外壁の無目地仕上げ工法は、請求項１乃至請求項３のいずれかに記載の水系塗材組成物を外壁材の突き合わせ部分の表面に塗付することで外壁を無目地の状態に仕上げることが出来る効果があり、突き合わせ部分が伸縮しても水系塗材組成物によって形成された塗膜にひび割れが生じることがないという効果がある。 Further, the jointless finishing method for the outer wall of the present invention is a jointless finish of the outer wall by applying the water-based coating material composition according to any one of claims 1 to 3 to the surface of the abutting portion of the outer wall material. There is an effect that it can be finished into a state, and there is an effect that a coating film formed by the water-based coating material composition does not crack even if the butted portions expand and contract.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明の水系塗材組成物は、アクリル樹脂系エマルジョンと、充填材と、骨材と、顔料と、増粘剤と、成膜助剤と、無機中空フィラーと、長さ２〜７ｍｍのビニロン繊維と、水と、から成り、組成物全体１００重量部に対して、無機中空フィラーは２０〜３０重量部、ビニロン繊維は０．２〜０．４重量部、樹脂固形分は５〜１０重量部であり、２〜５ｍｍ厚みに塗付し凹凸模様から成る意匠性を付与することが可能であり、且つ塗装下地に２〜５ｍｍ厚みに２回塗付することを特徴とする水系塗材組成物であり、必要に応じて消泡剤や分散剤等を配合することが出来る。 The water-based coating material composition of the present invention is an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, a film-forming aid, an inorganic hollow filler, and vinylon having a length of 2 to 7 mm. The composition is composed of fibers and water. The inorganic hollow filler is 20 to 30 parts by weight, the vinylon fiber is 0.2 to 0.4 parts by weight, and the resin solid content is 5 to 10 parts by weight with respect to 100 parts by weight of the whole composition. Part, which can be applied to a thickness of 2 to 5 mm to give a design property composed of a concavo-convex pattern, and which is applied twice to a coating base to a thickness of 2 to 5 mm. If desired, an antifoaming agent, a dispersant, etc. may be added.
［アクリル樹脂エマルジョン］
本発明のアクリル樹脂系エマルジョンには、アクリル酸エステル系共重合樹脂、酢酸ビニル・アクリル酸エステル系共重合樹脂、シリコン変性アクリル樹脂等のアクリル樹脂系エマルジョンを使用することができる。アクリル樹脂とするアクリル系単量体としては、メチルアクリレート、エチルアクリレート、ｎ−プロピルアクリレート、イソプロピルアクリレート、ｎ−ブチルアクリレート、イソブチルアクリレート、ｓｅｃ−ブチルアクリレート、ｔ−ブチルアクリレート、ヘキシルアクリレート、２−エチルヘキシルアクリレート、オクチルアクリレート、ノニルアクリレート、デシルアクリレート、ドデシルアクリレート、ｎ−アミルアクリレート、イソアミルアクリレート、ラウリルアクリレート、ステアリルアクリレート、メチル(メタ)アクリレート、エチル(メタ)アクリレート、ｎ−プロピル(メタ)アクリレート、イソプロピル(メタ)アクリレート、ｎ−ブチル(メタ)アクリレート、イソブチル(メタ)アクリレート、ｓｅｃ−ブチル(メタ)アクリレート、ｔ−ブチル(メタ)アクリレート、ヘキシル(メタ)アクリレート、２−エチルヘキシル(メタ)アクリレート、オクチル(メタ)アクリレート、ノニル(メタ)アクリレート、デシル(メタ)アクリレート、ドデシル(メタ)アクリレート、ｎ−アミル(メタ)アクリレート、イソアミル(メタ)アクリレート、ラウリル(メタ)アクリレート、ステアリル(メタ)アクリレート、シクロヘキシル(メタ)アクリレート、フェニル(メタ)アクリレート、ベンジル(メタ)アクリレート、メトキシエチル(メタ)アクリレート、エトキシエチル(メタ)アクリレート、メトキシプロピル(メタ)アクリレート、エトキシプロピル(メタ)アクリレート、等を使用することが出来る。他の不飽和単量体としては、スチレン、α-メチルスチレン、クロロスチレン、ビニルトルエン、メトキシスチレン等のスチレン誘導体；(メタ)アクリル酸、フマル酸、マレイン酸、無水マレイン酸、イタコン酸、無水イタコン酸、及びクロトン酸等のカルボキシル基含有単量体；(メタ)アクリル酸や、クロトン酸、イタコン酸；２−ヒドロキシエチル(メタ)アクリレートや、２（３）−ヒドロキシプロピル(メタ)アクリレート、４−ヒドロキシブチルアクリレート、アリルアルコール、多価アルコールのモノ(メタ)アクリル酸エステル等の水酸基含有単量体；(メタ)アクリルアミドや、マレインアミド等のアミド基含有単量体；２−アミノエチル(メタ)アクリレートや、ジメチルアミノエチル(メタ)アクリレート、３−アミノプロピル(メタ)アクリレート、２−ブチルアミノエチル(メタ)アクリレート、ビニルピリジン等のアミノ基含有単量体；グリシジル(メタ)アクリレートや、アリルグリシジルエーテル、２個以上のグリシジル基を有するエポキシ化合物と活性水素原子を有するエチレン性不飽和単量体との反応により得られるエポキシ基含有単量体やオリゴノマー；ビニルトリメトキシシラン、ビニルトリエトキシシラン、ビニルメチルジメトキシシラン、ビニルメチルジエトキシシラン、３−（メタ)アクリロキシプロピルトリメトキシシラン、３−(メタ)アクリロキシプロピルトリエトキシシラン、２−(メタ)アクリロキシエチルトリメトキシシラン、２−(メタ)アクリロキシエチルトリエトキシシラン、３−(メタ)アクリロキシプロピルメチルジメトキシシラン、３−(メタ)アクリロキシプロピルメチルジエトキシシラン、３−(メタ)アクリロキシプロピルメチルジプロポキシシラン、３−(メタ)アクリロキシブチルフェニルジメトキシシラン、３−(メタ)アクリロキシプロピルジメチルメトキシシラン、及び３−(メタ)アクリロキシプロピルジエチルメトキシシラン等のアルコキシシリル基含有単量体；その他、酢酸ビニル、塩化ビニル、更には、エチレン、ブタジエン、アクリロニトリル、ジアルキルフマレート等を使用することが出来る。
[Acrylic resin emulsion]
As the acrylic resin emulsion of the present invention, an acrylic resin emulsion such as an acrylic ester copolymer resin, a vinyl acetate / acrylic ester copolymer resin, or a silicone modified acrylic resin can be used. Examples of acrylic monomers used as acrylic resins include methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate, t-butyl acrylate, hexyl acrylate, 2-ethylhexyl. Acrylate, octyl acrylate, nonyl acrylate, decyl acrylate, dodecyl acrylate, n-amyl acrylate, isoamyl acrylate, lauryl acrylate, stearyl acrylate, methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl ( (Meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, sec-butyl (meth) acrylate , T-butyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, octyl (meth) acrylate, nonyl (meth) acrylate, decyl (meth) acrylate, dodecyl (meth) acrylate, n -Amyl (meth) acrylate, isoamyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, cyclohexyl (meth) acrylate, phenyl (meth) acrylate, benzyl (meth) acrylate, methoxyethyl (meth) acrylate, Ethoxyethyl (meth) acrylate, methoxypropyl (meth) acrylate, ethoxypropyl (meth) acrylate, etc. can be used. Other unsaturated monomers include styrene, α-methylstyrene, chlorostyrene, vinyltoluene, styrene derivatives such as methoxystyrene; (meth) acrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, anhydrous Carboxyl group-containing monomers such as itaconic acid and crotonic acid; (meth) acrylic acid, crotonic acid, itaconic acid; 2-hydroxyethyl (meth) acrylate and 2 (3) -hydroxypropyl (meth) acrylate, Hydroxyl group-containing monomers such as 4-hydroxybutyl acrylate, allyl alcohol, mono (meth) acrylic acid esters of polyhydric alcohols; amide group-containing monomers such as (meth) acrylamide and maleamide; 2-aminoethyl ( (Meth) acrylate, dimethylaminoethyl (meth) acrylate, 3-aminopropyl (meth) acrylate Amino group-containing monomer such as acrylate, 2-butylaminoethyl (meth) acrylate, vinyl pyridine; glycidyl (meth) acrylate, allyl glycidyl ether, epoxy compound having 2 or more glycidyl groups and active hydrogen atom Epoxy group-containing monomer and oligomer obtained by reaction with ethylenically unsaturated monomer having; vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane, vinylmethyldiethoxysilane, 3- (meth) acryi Roxypropyltrimethoxysilane, 3- (meth) acryloxypropyltriethoxysilane, 2- (meth) acryloxyethyltrimethoxysilane, 2- (meth) acryloxyethyltriethoxysilane, 3- (meth) acryloxypropyl Methyldimethoxysilane, 3- (meth) acrylic Xypropylmethyldiethoxysilane, 3- (meth) acryloxypropylmethyldipropoxysilane, 3- (meth) acryloxybutylphenyldimethoxysilane, 3- (meth) acryloxypropyldimethylmethoxysilane, and 3- (meth) Alkoxysilyl group-containing monomers such as acryloxypropyldiethylmethoxysilane; vinyl acetate, vinyl chloride, ethylene, butadiene, acrylonitrile, dialkyl fumarate and the like can be used.
アクリル樹脂系エマルジョン中の樹脂のガラス転移温度は−３０〜４０℃が好ましい。ガラス転移温度が−３０℃未満の場合は仕上がり表面にタックが生じて汚れやすくなり、４０℃超の場合は成膜不良となる。本発明の水系塗材組成物全体中の樹脂固形分は５．０〜２０．０重量％が好ましく、５．０重量％未満では粘着性、塗付作業性が低下し、また２０．０重量％超では粘度が低下し塗付作業性が低下すると共に表現できる意匠（パターン）数が低下する。市販のアクリル樹脂系エマルジョンとしては、アクロナールＰＳ７４３（ＢＡＳＦ社製、固形分５５重量％）がある。 The glass transition temperature of the resin in the acrylic resin emulsion is preferably -30 to 40 ° C. When the glass transition temperature is lower than -30 ° C, tackiness occurs on the finished surface and the surface is apt to be contaminated, and when it exceeds 40 ° C, the film formation becomes defective. The resin solid content in the entire water-based coating material composition of the present invention is preferably 5.0 to 20.0% by weight, and when it is less than 5.0% by weight, tackiness and coating workability are deteriorated, and 20.0% by weight. If it exceeds%, the viscosity decreases, the coating workability decreases, and the number of designs (patterns) that can be expressed decreases. As a commercially available acrylic resin emulsion, there is ACRONAL PS743 (manufactured by BASF, solid content 55% by weight).
［充填材］
本発明に使用する充填材は、平均粒径Ｄ５０（重量による積算５０％の粒径）が１００μｍ未満のものを言い、組成物の粘度や塗付性の調整を目的として配合し、重質炭酸カルシウム、クレー、カオリン、タルク、沈降性硫酸バリウム、炭酸バリウム、硅砂粉等が使用でき、重質炭酸カルシウムが安価でコスト的負担を軽減させることが出来る。充填材の配合量は塗材組成物全体に対して３〜２０重量％、好ましくは５〜１２重量％であり、３重量％未満では下地の色が透けるなどの隠蔽性が不足し、２０重量％超では塗材粘度が高くなって塗付作業性が不良となる。３重量％未満では色調によっては隠蔽性が低下する場合があり、１２重量％超では冬季等の低温度下では塗付作業性が低下する傾向にある。
[Filling material]
The filler used in the present invention is one having an average particle diameter D 50 (particle diameter of 50% accumulated by weight) of less than 100 μm, which is blended for the purpose of adjusting the viscosity and coatability of the composition, Calcium carbonate, clay, kaolin, talc, precipitated barium sulfate, barium carbonate, silica sand powder, etc. can be used, and heavy calcium carbonate is inexpensive and the cost burden can be reduced. The compounding amount of the filler is 3 to 20% by weight, preferably 5 to 12% by weight, based on the entire coating material composition. If the amount is less than 3% by weight, the hiding property such as the color of the undercoat is insufficient, resulting in 20% by weight. If it exceeds%, the viscosity of the coating material becomes high and the coating workability becomes poor. If it is less than 3% by weight, the hiding property may be lowered depending on the color tone, and if it exceeds 12% by weight, the coating workability tends to be lowered under low temperature such as winter.
［骨材］
本発明に使用する充填材は、平均粒径Ｄ５０（重量による積算５０％の粒径）が１００μｍ以上のものを言い、仕上がり表面に凹凸を付与することを目的として配合されるが、平均粒径が１００μｍ以上であればその粒子径は任意に選択することができ、例えば硅砂，ガラス，シリカ，タルク，重質炭酸カルシウムなどが使用可能である市販の平均粒径が２００μｍの重質炭酸カルシウムとしてはＫ−２５０（商品名，旭鉱末（株）製）がある。骨材（Ｂ）の配合量は組成物全体に対して２０〜４０重量％であり２０重量％未満では意匠性（塗材の凹凸感）が不足し、４０重量％超では作業性が低下する。
[aggregate]
The filler used in the present invention has an average particle diameter D 50 (particle diameter of 50% accumulated by weight) of 100 μm or more, and is blended for the purpose of giving unevenness to the finished surface. If the diameter is 100 μm or more, the particle size can be arbitrarily selected, and for example, silica sand, glass, silica, talc, ground calcium carbonate, etc. can be used. Commercially available ground calcium carbonate with an average particle size of 200 μm. There is K-250 (trade name, manufactured by Asahi Co., Ltd.). The content of the aggregate (B) is 20 to 40% by weight based on the whole composition. If it is less than 20% by weight, the design property (unevenness of the coating material) is insufficient, and if it exceeds 40% by weight, workability is deteriorated. .
［顔料］
顔料には、酸化チタン、酸化亜鉛、カーボンブラック、酸化第二鉄（弁柄）、クロム酸鉛、黄鉛、黄色酸化鉄等の無機系顔料等が使用できるが、中でも酸化チタンは下地の隠蔽性に優れ、白色であるため主たる顔料として使用することが出来る。
[Pigment]
As the pigment, inorganic pigments such as titanium oxide, zinc oxide, carbon black, ferric oxide (valve), lead chromate, yellow lead, and yellow iron oxide can be used. Among them, titanium oxide hides the base. Since it has excellent properties and is white, it can be used as a main pigment.
［増粘剤］
増粘剤は、鏝塗り作業性や保水性の向上を目的として配合し、水溶性セルロースエーテル、ウレタン変性ポリエーテル、ポリカルボン酸等が使用できる。水溶性セルロースエーテルとしてはｈｉメトローズ９０ＳＨ１５０００（信越化学株式会社製、商品名）がある。増粘剤の配合量は組成物全体１００重量部に対して０．１〜５．０重量部が好ましく、０．１重量部未満では十分な増粘効果が得られず塗材の凹凸模様が不十分となり、５．０重量部超では塗付作業性が低下する。
[Thickener]
As the thickener, water-soluble cellulose ether, urethane-modified polyether, polycarboxylic acid, or the like can be used for the purpose of improving workability and water retention in trowel coating. Examples of the water-soluble cellulose ether include hi-Metroses 90SH15000 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.). The compounding amount of the thickener is preferably 0.1 to 5.0 parts by weight with respect to 100 parts by weight of the entire composition, and if it is less than 0.1 parts by weight, the sufficient thickening effect cannot be obtained and the uneven pattern of the coating material may be obtained. If the amount is more than 5.0 parts by weight, the workability of coating will be deteriorated.
［成膜助剤］
成膜助剤には、エマルジョンのポリマー粒子の融着を促進し、ポリマーによる均一な皮膜を形成させることを目的で配合し、エチレングリコールジエチルエーテル、ベンジルアルコール、ブチルセロソルブ、エステルアルコール等を使用することが出来る。成膜助剤の配合量は組成物全体１００重量部に対して０．５〜１０重量部が好ましく、０．５重量部未満では低温での成膜が不十分となる場合があり、１０重量部超では塗材の表面に汚れが付着し易くなる場合がある。
[Film forming aid]
The film forming aid should be blended for the purpose of promoting fusion of the polymer particles of the emulsion and forming a uniform film of the polymer, and use ethylene glycol diethyl ether, benzyl alcohol, butyl cellosolve, ester alcohol, etc. Can be done. The amount of the film-forming auxiliary compounded is preferably 0.5 to 10 parts by weight with respect to 100 parts by weight of the entire composition. If it is less than 0.5 parts by weight, film formation at low temperature may be insufficient, and 10 parts by weight may be obtained. If it exceeds a certain amount, stains may easily adhere to the surface of the coating material.
[無機中空フィラー]
本発明に使用する無機中空フィラーは、本水系塗材組成物が塗付されて乾燥硬化した塗膜に断熱性を付与すると共に、複数枚の外壁材の側端部が突き合わされた状態で下地に装着されることによって形成された、略直線状の突き合わせ部分の隙間の真上に本組成物を塗付しても、目痩せを生じることなく、また該隙間が外壁材の温度変化や振動によって伸縮しても、その動きに追随可能な可撓性を付与することを目的として配合される。本発明においては、無機中空フィラーによって、単に断熱性を付与するだけでなく、上記可撓性を塗膜に付与することによって、外壁材（一般的にはサイディング材という）が縦横に下地に貼着されて形成された大面積の外壁を、隙間が無く、上記隙間部分でクラック等の不具合が生じない大きな一枚の外壁とすることに大きな特徴がある。
[Inorganic hollow filler]
The inorganic hollow filler used in the present invention imparts heat insulating properties to the coating film obtained by applying the present water-based coating material composition and dried and cured, and forms a base in the state where the side end portions of a plurality of outer wall materials are butted against each other. When the present composition is applied directly above the gap between the substantially linear abutting portions formed by being attached to the outer wall, the gap does not become thin, and the gap does not change in temperature or vibration of the outer wall material. Even if it expands and contracts, it is compounded for the purpose of imparting flexibility capable of following the movement. In the present invention, the outer wall material (generally referred to as a siding material) is attached to the substrate vertically and horizontally by not only imparting the heat insulating property by the inorganic hollow filler but also imparting the above flexibility to the coating film. It is a great feature that the large-sized outer wall formed by being attached is a large single outer wall that has no gaps and does not cause defects such as cracks in the gaps.
上記目的を達成するために、本発明では無機中空フィラーを組成物全体１００重量部に対して２０〜３０重量部と多めに配合し、この他に次に詳細に説明している長さ２〜７ｍｍのビニロン繊維を配合する。 In order to achieve the above object, in the present invention, an inorganic hollow filler is mixed in a large amount of 20 to 30 parts by weight with respect to 100 parts by weight of the whole composition, and in addition to this, a length of 2 to Blend 7 mm vinylon fiber.
無機中空フィラーは、上記目的を達成するものであれば、どのような無機中空フィラーを使用しても良いが、好ましくは、どちらかというと壊れ難くて平均粒径が１．０〜１．４ｍｍで嵩比重が０．２〜０．６ｇ/ｃｃのガラス発泡体と、これを塗材中に分散した際の該ガラス発泡体とガラス発泡体の隙間を、やや小径の平均粒径が２００〜４００μｍで嵩比重０．１〜０．３ｇ／ｃｃの火山性細粒ガラス質凝灰岩の球状発泡体で埋めるようにして、該２種類の無機中空フィラーを併用することで、上記目的がより確実に達成される。ここでいう平均粒径とは重量累積が５０％となる平均粒径Ｄ５０を言う。 As the inorganic hollow filler, any inorganic hollow filler may be used as long as it achieves the above object, but it is preferably rather hard to break and has an average particle diameter of 1.0 to 1.4 mm. And a glass foam having a bulk specific gravity of 0.2 to 0.6 g / cc and a gap between the glass foam and the glass foam when the glass foam is dispersed in a coating material have a slightly smaller average particle diameter of 200 to By using the two types of inorganic hollow fillers in combination so as to be filled with a spherical foam of volcanic fine-grained vitreous tuff having a bulk specific gravity of 0.1 to 0.3 g / cc at 400 μm, the above object can be more reliably achieved. To be achieved. The average particle diameter as used herein means an average particle diameter D 50 at which the weight accumulation is 50%.
ガラス発泡体の平均粒径が１．０ｍｍ未満では断熱性が不十分となり、１．４ｍｍ超では上記隙間の動きによって塗材にクラックが生じる場合がある。また火山性細粒ガラス質凝灰岩の球状発泡体の平均粒径が２００μｍ未満では、断熱性が不十分となり、４００μｍ超では、塗材にクラックが生じやすくなる。 If the average particle size of the glass foam is less than 1.0 mm, the heat insulation becomes insufficient, and if it exceeds 1.4 mm, the coating material may crack due to the movement of the gap. If the average particle size of the spherical foam of volcanic fine-grained vitreous tuff is less than 200 μm, the heat insulation becomes insufficient, and if it exceeds 400 μm, the coating material is apt to crack.
[ビニロン繊維]
本発明に使用するビニロン繊維は、下地とした外壁材が熱や振動によって大きく動いた際に、上記隙間の上に塗付された本組成物にクラック等が生じることを防止することを目的として配合する。ビニロン繊維は長さが２〜７ｍｍのものを使用し、長さが２ｍｍ未満では塗膜にクラックが発生する場合があり、７ｍｍ超では塗材を下地に塗付する際の作業性が低下する。ビニロン繊維の繊度は組成物のクラック等が生じることを防止できれば一般的な繊維状であれば特に制限はなく、０．５〜６ｄｔｅｘのビニロン繊維を使用することができる。
[Vinylon fiber]
The vinylon fiber used in the present invention is intended to prevent the occurrence of cracks or the like in the present composition applied onto the above-mentioned gap when the outer wall material as the underlayer is largely moved by heat or vibration. Compound. The vinylon fiber has a length of 2 to 7 mm, and if the length is less than 2 mm, cracks may occur in the coating film, and if it exceeds 7 mm, workability at the time of applying the coating material to the base is deteriorated. . The fineness of the vinylon fiber is not particularly limited as long as it can prevent the composition from cracking and the like, and a vinylon fiber of 0.5 to 6 dtex can be used.
ビニロン繊維の配合量は組成物１００重量部に対して０．２〜０．４重量部であり、０．２重量部未満では塗膜にクラックが発生する場合があり、０．４ｍｍ超では塗材を下地に塗付する際の作業性が低下する。 The blending amount of vinylon fiber is 0.2 to 0.4 parts by weight with respect to 100 parts by weight of the composition. If it is less than 0.2 parts by weight, cracks may occur in the coating film, and if it exceeds 0.4 mm, it may be coated. Workability at the time of applying the material to the base is reduced.
本発明の水系塗材組成物は、モルタル下地等にも塗付することが出来るが、この場合はモルタル下地に微細なクラックが生じていても、該クラックの動きによって塗膜にクラックが発生しない。複数の外壁材が、互いにその側端部を突き合わせて下地に装着されて、該外壁材の表面に本水系塗材組成物を塗付する際には、突き合わせ部分の表面に必要により、次に塗る本発明である水系塗材組成物の吸い込みを防止するためのシーラーを塗付し、次に本水系塗材組成物を２〜５ｍｍ厚みに塗付して突き合わせ部分の不陸を調整し、さらに同水系塗材組成物を２〜５ｍｍ厚みに塗付して仕上げる。こうすることによって複数の外壁材によって縦横に形成された隙間目地を覆い隠すことができ、目地の無い、外壁の無目地仕上げ工法と成る。 The water-based coating material composition of the present invention can be applied to a mortar substrate, etc., but in this case, even if fine cracks are generated in the mortar substrate, the movement of the cracks does not cause cracks in the coating film. . A plurality of outer wall materials are attached to a base with their side ends abutted against each other, and when applying the present water-based coating material composition to the surface of the outer wall material, if necessary on the surface of the abutted portion, Apply a sealer for preventing inhalation of the water-based coating material composition of the present invention to be applied, then apply the water-based coating material composition to a thickness of 2 to 5 mm to adjust the unevenness of the butted portion, Further, the same water-based coating material composition is applied to a thickness of 2 to 5 mm to finish. By doing so, it is possible to cover the gap joints formed in the vertical and horizontal directions by the plurality of outer wall materials, and it becomes a jointless finishing method of the outer wall without joints.
本発明の水系塗材組成物の上層には例えば特許第４７２１９３５号公報 明細書段落００４２ 表１ 実施例１乃至実施例５に提案されているような砂壁状塗料組成物を塗付することが出来、これにより、本組成物が経時により変色しても、該砂壁状塗料組成物を塗付することで、容易に美観を取り戻すことが出来る。また該砂壁状塗料組成物に遮熱性が付与されていれば、該遮熱性と本発明の水系塗材組成物の断熱性により、建築物内部の温度上昇がより強く抑制される。 An upper layer of the water-based coating material composition of the present invention can be coated with, for example, a sand wall coating composition as proposed in Japanese Patent No. 4721935, Paragraph 0042, Table 1, Examples 1 to 5. Therefore, even if the composition changes color over time, the aesthetic appearance can be easily restored by applying the sand wall coating composition. Further, when the sand wall-shaped coating composition is provided with a heat shield property, the temperature rise inside the building is more strongly suppressed by the heat shield property and the heat insulating property of the water-based coating material composition of the present invention.
本組成物には上記の配合成分の他に、塗材中の巻き込み等による泡を消失させるために消泡剤や、充填材や顔料等を均一に分散させるための分散剤が配合されることがある。 In this composition, in addition to the above-mentioned components, an antifoaming agent for eliminating bubbles due to entrainment in the coating material and a dispersant for uniformly dispersing fillers, pigments, etc. There is.
本発明の水系塗材組成物は施工にあたっては、ローラー刷毛、パターンローラー、金鏝、吹き付けガン等を使用して、目的としている意匠となるように適切に施工器具を選択し、その意匠に適した塗付量で仕上げる。配合された水系塗材組成物の適正粘度としては、３００〜７００Ｐａ・ｓが好ましく、このような粘度とするには、適当量の水を加えることで調整することが出来る。 At the time of construction, the water-based coating material composition of the present invention is suitable for a design by appropriately selecting a construction tool by using a roller brush, a pattern roller, a metal trowel, a spray gun, etc. Finish with the applied amount. The proper viscosity of the blended water-based coating material composition is preferably 300 to 700 Pa · s, and such a viscosity can be adjusted by adding an appropriate amount of water.
また、本発明の水系塗材組成物の塗付厚みは２〜５ｍｍであり、上記ローラー刷毛、パターンローラー、金鏝、吹き付けガン等を使用して、目的とする意匠を付与する。 Further, the coating thickness of the water-based coating material composition of the present invention is 2 to 5 mm, and the intended design is imparted using the roller brush, the pattern roller, the metal iron, the spray gun and the like.
以下、実施例及び比較例にて具体的に説明する。 Hereinafter, a specific description will be given with reference to Examples and Comparative Examples.
[材料の作製]
表１の配合に従って、配合Ａ乃至配合Ｅの水系塗材組成物を作製した。表１において、アクリル樹脂系エマルジョンはアクロナールＰＳ７４３（固形分：５４〜５６％、樹脂のガラス転移温度：３０℃、スチレン、アクリル酸エステル、メタクリル酸エステルの共重合体、ＢＡＳＦ社製、商品名）を使用し、充填剤は硅砂粉＃３００（平均粒径２５μｍ、株式会社トウチュウ製、商品名）を使用し、骨材は、東北硅砂７号（比重１．５、平均粒径１５０μｍ、東北硅砂株式会社製、商品名）を使用し、顔料には酸化チタンＲ−８２０（石原産業株式会社製、商品名）を使用し、増粘剤は水溶性セルロースエーテルｈiメトローズ９０ＳＨ−１５０００（信越化学株式会社製、商品名）を、成膜助剤はテキサノールＣＳ−１２（チッソ株式会社製、商品名）を、無機中空フィラーＡは平均粒径が１．２ｍｍで嵩比重が０．４ｇ/ｃｃのガラス発泡体ＪＦ−２１５（商品名、アイカ工業社製）を、無機中空フィラーＢは平均粒径が３００μｍで嵩比重０．２ｇ／ｃｃの火山性細粒ガラス質凝灰岩の球状発泡体ＪＦ−２１６（商品名、アイカ工業社製）を、ビニロン繊維は、長さ４ｍｍ、繊度２．０ｄｔｅｘのビニロン繊維ＪＦ−２１４（商品名、アイカ工業社製）を使用した。この他には消泡剤及び分散剤を添加したが、これらは水系塗材用の市販品より適宜選択されるものを使用することが出来る。これらの原料を均一に混合分散させ、配合Ａ乃至配合Ｅの水系塗材組成物とした。
[Production of materials]
According to the formulations in Table 1, aqueous coating material compositions of formulations A to E were prepared. In Table 1, acrylic resin emulsion is ACRONAL PS743 (solid content: 54 to 56%, glass transition temperature of resin: 30 ° C., copolymer of styrene, acrylic ester, and methacrylic ester, manufactured by BASF, trade name). The filler is silica sand powder # 300 (average particle size 25 μm, manufactured by Tochu Co., Ltd., trade name), and the aggregate is Tohoku silica sand No. 7 (specific gravity 1.5, average particle size 150 μm, Tohoku silica sand (Trade name) manufactured by K.K., titanium oxide R-820 (trade name, manufactured by Ishihara Sangyo Co., Ltd.) is used as a pigment, and a thickener is water-soluble cellulose ether hi-Metroses 90SH-15000 (Shin-Etsu Chemical Co., Ltd.). Company, product name), film-forming aid Texanol CS-12 (manufactured by Chisso Corporation, product name), and inorganic hollow filler A having an average particle size of 1.2 mm and a bulk specific gravity. 0.4 g / cc of glass foam JF-215 (trade name, manufactured by Aika Kogyo Co., Ltd.), and the inorganic hollow filler B has an average particle diameter of 300 μm and a spherical specific gravity glassy tuff with a bulk specific gravity of 0.2 g / cc. Foam JF-216 (trade name, manufactured by Aika Kogyo Co., Ltd.) was used, and vinylon fiber used was vinylon fiber JF-214 (trade name, manufactured by Aika Kogyo Co., Ltd.) having a length of 4 mm and a fineness of 2.0 dtex. In addition to this, an antifoaming agent and a dispersant were added, but as these, those appropriately selected from commercial products for water-based coating materials can be used. These raw materials were uniformly mixed and dispersed to obtain a water-based coating material composition of Formulations A to E.
[実施例及び比較例]
実施例１は表１の塗材配合Ａの水系塗材組成物を使用して、下地に３．５ｍｍ厚みに２回塗付して計７．０ｍｍ厚みとした。実施例２は、実施例1の塗膜にさらに遮熱性を有する砂壁状塗料組成物 アイカジョリパットＪＱ−８１０（商品名、アイカ工業社製、特許第５７２１９３５号公報の段落００４２表１に示される実施例１の酸化チタンＲ−８２０を、赤外線遮蔽酸化チタンＪＲ−１０００（テイカ社製、平均粒子径１．０μｍ）に置き換えたもの）を０．２〜０．４ｋｇ／ｍ２で２回塗付した。実施例３は塗材配合Ａの水系塗材組成物を使用して、下地に２．５ｍｍ厚みに２回塗付して計５．０ｍｍ厚みとして、さらに実施例２と同様に遮熱性を有する砂壁状塗料組成物 アイカジョリパットＪＱ−８１０を０．２〜０．４ｋｇ／ｍ２で２回塗付した。比較例１は塗材配合Ｂの水系塗材組成物を使用して下地に３．５ｍｍ厚みに２回塗付して計７．０ｍｍ厚みとし、比較例２は塗材配合Ｃの水系塗材組成物を使用して下地に３．５ｍｍ厚みに２回塗付して計７．０ｍｍ厚みとし、比較例３は塗材配合Ｄの水系塗材組成物を使用して下地に３．５ｍｍ厚みに２回塗付して計７．０ｍｍ厚みとした。比較例４は塗材配合Ｅの水系塗材組成物を使用して２ｍｍ厚みに塗付した。
[Examples and Comparative Examples]
In Example 1, the water-based coating material composition of coating material formulation A shown in Table 1 was used to apply it to the base twice twice to a thickness of 3.5 mm to give a total thickness of 7.0 mm. Example 2 is a sand-walled coating composition having heat-shielding properties in addition to the coating film of Example 1, Aika Jolipat JQ-810 (trade name, manufactured by Aika Kogyo KK, Paragraph 0042 in Table 1 of Japanese Patent No. 5721935). The titanium oxide R-820 of Example 1 was replaced with infrared shielding titanium oxide JR-1000 (made by Teika Co., Ltd., average particle diameter 1.0 μm) twice at 0.2 to 0.4 kg / m 2 . did. In Example 3, the water-based coating material composition of coating material formulation A was used, and the coating was applied twice to the underlayer to a thickness of 2.5 mm to a total thickness of 5.0 mm. Sand wall coating composition Aika Jolipat JQ-810 was applied twice at 0.2 to 0.4 kg / m 2 . In Comparative Example 1, the water-based coating material composition of coating material formulation B was applied twice to the underlayer to a thickness of 3.5 mm to make a total of 7.0 mm thickness. In Comparative Example 2, the water-based coating material composition of coating material formulation C was used. The composition was applied twice to a base to a thickness of 3.5 mm to make a total thickness of 7.0 mm, and Comparative Example 3 uses the water-based coating material composition of coating material formulation D to have a thickness of 3.5 mm as a base. Was applied twice to give a total thickness of 7.0 mm. In Comparative Example 4, the water-based coating material composition of coating material formulation E was used to apply a coating having a thickness of 2 mm.
実施例及び比較例について、以下に示す評価方法により評価した。 The examples and comparative examples were evaluated by the evaluation methods shown below.
[評価方法] [Evaluation methods]
[塗付作業性]
９００ｍｍ角のＪＩＳＡ５４３０規定のフレキシブルボードを垂直に設置し、実施例又は比較例の塗膜を作成する際に、水系塗材組成物を剣先ゴテで凹凸の差を付けながら塗付厚みが２〜５ｍｍと成るようにして扇型の柄をつける。その際に剣先ゴテをスムーズに移動させることが出来るものを○、剣先ゴテが多少移動させにくいものを△、剣先ゴテが明らかに移動させにくいものを×と評価した。
[Coatability]
When a 900 mm square JISA 5430 standard flexible board is installed vertically and a coating film of an example or a comparative example is prepared, the coating thickness of the water-based coating material composition is 2 to 5 mm while making a difference in unevenness with a pointed iron. And attach a fan-shaped handle. At that time, the one that can move the sword tip smoothly was evaluated as ○, the one that the tip was slightly difficult to move was evaluated as △, and the one that the tip was obviously difficult to move was evaluated as ×.
［意匠性］
９００ｍｍ角のＪＩＳＡ５４３０規定のフレキシブルボードを垂直に設置し、実施例又は比較例の塗膜を作成する際に、水系塗材組成物を剣先ゴテで凹凸の差を付けながら塗付厚みが２〜５ｍｍと成るようにして扇型の柄をつけ、そのまま乾燥させる。硬化後、つけた柄がそのままの状態を保っているものを○、柄に崩れ（ダレ、レベリング）が多少ある場合は△、明らかな崩れがある場合を×と評価した。
[Creativity]
When a 900 mm square JISA 5430 standard flexible board is installed vertically and a coating film of an example or a comparative example is prepared, the coating thickness of the water-based coating material composition is 2 to 5 mm while making a difference in unevenness with a pointed iron. Attach a fan-shaped handle so that it becomes dry. After the curing, the pattern applied was maintained as it was, the pattern was evaluated as ◯, when the pattern had some collapse (sagging or leveling), the evaluation was Δ, and when there was obvious collapse, it was evaluated as x.
[断熱性]
３００ｍｍ角のＪＩＳＡ５４３０既定のフレキシブルボードを下地として、実施例又は比較例の各塗膜を作製し２３℃湿度５０％ＲＨで１４日間養生し試験体とする。該試験体を水平に保持し、その中央真上２５ｃｍに投光器ＮＴ−２００（２００ワット、日動工業社製）を設置し、該投光機の光を塗膜表面に当て、３０分後の塗膜表面温度及び塗膜裏面（フレキシルブルボードに接している塗膜面）温度を測定し、塗膜表面温度及び塗膜裏面温度の差が１５℃以上である場合を、断熱性有り、と評価し、１５℃未満を、断熱性無し、と評価した。
[Thermal insulation properties]
Each of the coating films of Examples or Comparative Examples is prepared using a 300 mm square JISA 5430 standard flexible board as a base, and cured at 23 ° C. and 50% RH for 14 days to obtain a test body. The test body was held horizontally, a projector NT-200 (200 watts, manufactured by Nichido Industry Co., Ltd.) was placed 25 cm directly above the center, and the light from the projector was applied to the surface of the coating film, followed by coating after 30 minutes. The temperature of the film surface and the back surface of the coating film (the surface of the coating film in contact with the flexible board) were measured, and when the difference between the surface temperature of the coating film and the back surface temperature of the coating film was 15 ° C or more, it was evaluated as having heat insulation. However, when the temperature was less than 15 ° C, it was evaluated as having no heat insulating property.
[ゼロスパン引張特性（突き付け目地）]
下地としてＪＩＳＡ５４３０規定のフレキシブルボード（１００×１００ｍｍ厚さ１０ｍｍ）を使用し、当該下地２枚の木口同士を突き付け、その裏面を養生テープで仮止めする。下地のオモテ面にシーラーとして溶剤塩化ゴム系下塗り材（ＪＳ−４１０、アイカ工業株式会社製、商品名）を０．２ｋｇ／ｍ２塗布して、４時間以上乾燥させた後、実施例又は比較例の塗膜を作製し、気温２３℃湿度５０％ＲＨで１４日間養生して試験体とした。その後裏面の仮止めの養生テープをはがし、インストロン万能試験機にて、試験体の両端を２ｍｍ／分で引張り、突きつけ部にピンホールが発生した距離が１．８ｍｍ以上を○、１．８ｍｍ未満を×と評価した。
[Zero span tensile properties (joint joint)]
A flexible board (100 × 100 mm, thickness: 10 mm) defined by JIS A 5430 is used as a base, and the wood openings of the two bases are abutted against each other, and the back surface thereof is temporarily fixed with a curing tape. A solvent chlorinated rubber-based undercoat material (JS-410, manufactured by Aika Kogyo Co., Ltd., trade name) was applied as a sealer on the front surface of the underlayer at 0.2 kg / m 2 and dried for 4 hours or more, and then an example or comparison. The coating film of the example was prepared and cured at a temperature of 23 ° C. and a humidity of 50% RH for 14 days to obtain a test body. After that, peel off the curing tape for temporary fixing on the back side, and pull both ends of the test piece at 2 mm / min with an Instron universal testing machine, and the distance at which a pinhole is generated at the abutting part is 1.8 mm or more ○, 1.8 mm Less than was evaluated as x.
[ゼロスパン引張特性（１０ｍｍ目地）]
下地としてＪＩＳＡ５４３０規定のフレキシブルボード（１００×１００ｍｍ厚さ１０ｍｍ）を使用し、当該下地２枚の木口同士を１０ｍｍ開けて目地とし、該目地に１成分形ポリウレタンシーリングを充填し２３℃７日間養生し、実施例又は比較例の塗付下地とする。該塗付下地のオモテ面にシーラーとして溶剤塩化ゴム系下塗り材（ＪＳ−４１０、アイカ工業株式会社製、商品名）を０．２ｋｇ／ｍ２塗布して、４時間以上乾燥させた後、実施例又は比較例の塗膜を作製し、気温２３℃湿度５０％ＲＨで１４日間養生して試験体とした。その後、インストロン万能試験機にて、試験体の両端を２ｍｍ／分で引張、目地部分にピンホールが発生した距離が３．０ｍｍ以上を○、３．０ｍｍ未満を×と評価した。
[Zero span tensile properties (10 mm joint)]
A flexible board (100 × 100 mm thickness 10 mm) prescribed by JISA 5430 is used as a base, and the openings of the two bases are opened by 10 mm to form joints, and the joints are filled with a one-component polyurethane sealing and cured at 23 ° C. for 7 days. The coating base of Example or Comparative Example is used. A solvent chlorinated rubber-based undercoat material (JS-410, manufactured by Aika Kogyo Co., Ltd., trade name) was applied at 0.2 kg / m 2 as a sealer on the front surface of the coating base, and dried for 4 hours or more. A coating film of the example or the comparative example was prepared and cured at a temperature of 23 ° C. and a humidity of 50% RH for 14 days to obtain a test body. After that, both ends of the test body were pulled at 2 mm / min with an Instron universal tester, and the distance in which a pinhole was generated in the joint portion was evaluated as ◯, and less than 3.0 mm was evaluated as x.
[耐疲労性（引張後に伸縮）]
下地としてＪＩＳＡ５４３０規定のフレキシブルボード（２００×１５０ｍｍ厚さ８ｍｍ）を使用し、当該下地２枚の１５０ｍｍ部分の木口同士を１０ｍｍ開けて目地とし、該目地に１成分形ポリウレタンシーリングを充填し２３℃７日間養生し、実施例又は比較例の塗付下地とする。該塗付下地のオモテ面にシーラーとして溶剤塩化ゴム系下塗り材（ＪＳ−４１０、アイカ工業株式会社製、商品名）を０．２ｋｇ／ｍ２塗布して、４時間以上乾燥させた後、実施例又は比較例の塗膜を作製し、気温２３℃湿度５０％ＲＨで１４日間養生して試験体とした。
[Fatigue resistance (expansion and contraction after tension)]
A flexible board (200 × 150 mm thickness 8 mm) defined by JISA 5430 is used as a base, and the openings of the two 150 mm portions of the base are opened by 10 mm to form joints, and the joints are filled with a one-component polyurethane sealing at 23 ° C. It is cured for a day and used as the coating base of Example or Comparative Example. A solvent chlorinated rubber-based undercoat material (JS-410, manufactured by Aika Kogyo Co., Ltd., trade name) was applied at 0.2 kg / m 2 as a sealer on the front surface of the coating base, and dried for 4 hours or more. A coating film of the example or the comparative example was prepared and cured at a temperature of 23 ° C. and a humidity of 50% RH for 14 days to obtain a test body.
試験方法はＪＩＳＡ１４３６「建築用皮膜材料の下地不連続部における耐疲労性試験方法 ５．試験方法」に準拠し、試験体を長手方向に０．１ｍｍ引っ張ってムーブメントの開始点とした。次に、該開始点よりさらに０．１ｍｍ引っ張って開始点に戻すという伸縮を２０℃にて５００回、次に６０℃で５００回、次に−２０℃で５００回行い、これで塗膜に異常が観察されない場合は、前記開始点よりさらに０．２ｍｍ引っ張って開始点に戻すという伸縮を同様に２０℃、６０℃、−２０℃でそれぞれ５００回行う。これらを順次繰り返して、異常が無ければ開始点からの引っ張り距離を順次０．１ｍｍプラスして伸縮を繰り返すという試験を連続して行い、開始点からの引っ張り長さが０．５ｍｍで各温度での伸縮後に塗膜に異常が無いものを○と評価した。 The test method was based on JIS A1436 "Test method for fatigue resistance in discontinuous base material of architectural coating material 5. Test method", and the test piece was pulled 0.1 mm in the longitudinal direction to be the starting point of the movement. Next, stretching and pulling by 0.1 mm from the starting point to return to the starting point is performed 500 times at 20 ° C., 500 times at 60 ° C., and then 500 times at −20 ° C. to obtain a coating film. When no abnormality is observed, the stretching is performed by pulling 0.2 mm further from the starting point and returning to the starting point, similarly, at 500C at 20 ° C, 60 ° C, and -20 ° C, respectively. By repeating these steps in sequence, if there is no abnormality, the pulling distance from the starting point is sequentially increased by 0.1 mm, and expansion and contraction is repeated, and the test is repeated, and the pulling length from the starting point is 0.5 mm at each temperature. When there was no abnormality in the coating film after the expansion and contraction, the sample was evaluated as ◯.
[耐疲労性（圧縮後に伸縮）]
試験体は上記[耐疲労性（引張後に伸縮）]の試験体と同様とし、試験方法は同様にＪＩＳＡ１４３６「建築用皮膜材料の下地不連続部における耐疲労性試験方法 ５．試験方法」に準拠し、試験体を長手方向に０．１ｍｍ圧縮してムーブメントの開始点とした。次に、該開始点から０．１ｍｍ引っ張って開始点に戻すという伸縮を２０℃にて５００回、次に６０℃で５００回、次に−２０℃で５００回行い、これで塗膜に異常が観察されない場合は、前記開始点よりさらに０．２ｍｍ引っ張って開始点に戻すという伸縮を同様に２０℃、６０℃、−２０℃でそれぞれ５００回行う。これらを順次繰り返して、異常が無ければ開始点からの引っ張り距離を順次０．１ｍｍプラスして伸縮を繰り返すという試験を継続し、開始点からの引っ張り長さが０．３ｍｍで各温度での伸縮後に塗膜に異常が無いものを○と評価した。
[Fatigue resistance (expansion and contraction after compression)]
The test piece is the same as the above-mentioned [fatigue resistance (expansion and contraction after tension)] test piece, and the test method is based on JIS A1436 "Fatigue resistance test method for discontinuous base material of architectural coating material 5. Test method" Then, the test body was compressed by 0.1 mm in the longitudinal direction and used as the starting point of the movement. Next, stretching at 0.1 mm from the starting point and returning to the starting point was performed 500 times at 20 ° C., 500 times at 60 ° C., and then 500 times at −20 ° C. If is not observed, stretching is further performed by pulling 0.2 mm further from the starting point and returning to the starting point, and similarly, 500 times at 20 ° C., 60 ° C., and −20 ° C., respectively. Repeat these steps, and if there are no abnormalities, continue the test of adding 0.1 mm to the pulling distance from the starting point and repeating expansion and contraction. The tensile length from the starting point is 0.3 mm and expansion and contraction at each temperature. After that, a film having no abnormality was evaluated as ◯.
［評価結果］ [Evaluation results]
評価結果を表２に示す。 The evaluation results are shown in Table 2.
Claims (6)
The method for finishing a jointless outer wall according to claim 5, wherein the sand wall-shaped coating composition has a heat-shielding property.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7086431B1 (en) | 2021-11-30 | 2022-06-20 | 株式会社清水 | Thermal insulation coating composition |
| JP7291862B1 (en) * | 2023-02-10 | 2023-06-15 | アイカ工業株式会社 | Water-based paint composition and method for repairing exterior walls of buildings |
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| JP7086431B1 (en) | 2021-11-30 | 2022-06-20 | 株式会社清水 | Thermal insulation coating composition |
| WO2023100464A1 (en) * | 2021-11-30 | 2023-06-08 | 株式会社清水 | Heat-shielding thermal insulation coating composition |
| JP2023080555A (en) * | 2021-11-30 | 2023-06-09 | 株式会社清水 | Heat-blocking thermal insulation coating composition |
| JP7291862B1 (en) * | 2023-02-10 | 2023-06-15 | アイカ工業株式会社 | Water-based paint composition and method for repairing exterior walls of buildings |
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