JP5739636B2 - Wall finishing method - Google Patents
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- JP5739636B2 JP5739636B2 JP2010228081A JP2010228081A JP5739636B2 JP 5739636 B2 JP5739636 B2 JP 5739636B2 JP 2010228081 A JP2010228081 A JP 2010228081A JP 2010228081 A JP2010228081 A JP 2010228081A JP 5739636 B2 JP5739636 B2 JP 5739636B2
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Description
本発明は、建築用仕上塗材の乾燥促進方法に関する。 The present invention relates to a method for promoting drying of a building finish coating material.
従来、建築仕上塗材は立体的造形性を有する凹凸模様意匠を付与できる塗材で、適度な乾燥や塗材の扱い易さから、水系エマルション型が内外壁の塗材として使用される。この凹凸模様は主にローラーにより、凹凸を付与し、塗膜の品質を確保するため、下塗りとして、仕上げ材を塗ることが多い。また、塗材の乾燥性はローラー作業やこて作業を中心にされ、小面積では乾燥が次工程に進む律速となり、工期を遅らせる原因となっていた。特に冬場などの水の蒸発が遅い場合等には対処できなかった。 Conventionally, an architectural finish coating material is a coating material that can impart a concavo-convex pattern design having three-dimensional formability, and an aqueous emulsion type is used as a coating material for inner and outer walls because of moderate drying and ease of handling of the coating material. In order to impart unevenness to the uneven pattern mainly by a roller and ensure the quality of the coating film, a finishing material is often applied as an undercoat. In addition, the drying property of the coating material is mainly a roller work and a trowel work, and in a small area, drying becomes a rate-determining method for proceeding to the next process, which causes a delay in the construction period. In particular, it was not possible to cope with slow evaporation of water such as in winter.
吸水剤がカルシウム、マグネシウム、バリウムから選ばれた少なくとも一種の金属酸化物である樹脂エマルジョン硬化促進剤を用い、樹脂エマルジョン系の接着剤に用いる場合は樹脂エマルジョン硬化促進剤として働き、樹脂エマルジョン系の塗膜形成剤に用いられた場合には塗膜形成を斑なくなせる促進剤として働くことが開示されている。（特許文献１） A resin emulsion curing accelerator that is at least one metal oxide selected from calcium, magnesium, and barium is used as the water absorbing agent. When used as a resin emulsion adhesive, it acts as a resin emulsion curing accelerator. It is disclosed that when used as a coating film forming agent, it acts as an accelerator that can eliminate film formation. (Patent Document 1)
合成樹脂エマルジョン、骨材、顔料、充填剤、増粘剤、水を少なくとも配合した固形分が７５重量％以上の水系塗材であって、固形分容量率６０〜７５％であり、塗材中の非可塑性成分（Ａ）の不揮発成分容量率が６５％〜８０％であり、Ａの成分中 粒径１００μｍ以上の成分の容量率が８０％〜９８％である水系塗材組成物で、５℃以下の低温時においても、施工が可能であり、密着性、耐久性があることが開示されている。（特許文献２） A water-based coating material having a solid content of at least 75% by weight, comprising at least a synthetic resin emulsion, an aggregate, a pigment, a filler, a thickener, and water, and having a solid content volume ratio of 60 to 75%. The non-plastic component (A) has a non-volatile component volume ratio of 65% to 80%, and a water-based coating composition in which the volume ratio of components having a particle size of 100 μm or more in the component A is 80% to 98%. It is disclosed that construction is possible even at a low temperature of ℃ or less, and there is adhesion and durability. (Patent Document 2)
建築用仕上塗材は結合材として合成樹脂エマルション、充填剤、骨材、顔料等から構成され、吹付け、ローラー塗り、こて塗りなどで立体的な造形性をもつ模様に仕上げるもので、骨材と充填剤が、塗り付け性に大きく影響し、必須成分となる。一般の塗料と異なる点はどの塗付手段をとっても最低膜厚を確保するために下塗りをすることが多い。塗材組成としては立体的な造形性として、その作業性を確保するため、適度な乾燥性が要求される。また、下塗りと仕上げ塗材の密着性と融通性から同一塗材が好ましい。これらの条件では下塗りとしては約１ｍｍの膜厚となる。一方、エマルション系塗材の欠点となる皮張りがある。これは表面付近のみ成膜し、深部の乾燥を妨げるもので、常温乾燥が主である建築仕上塗材では施工環境では皮張りが生じない配合とされる。この皮張り現象を生じず、塗膜性能に影響を与えない乾燥促進方法は見出されていない。一般的に塗料は骨材に相当する大粒径の成分はなく、低膜厚を複数回、塗布乾燥を繰り返し、皮張りは起こり難い仕様である。 Finishing coating materials for construction are composed of synthetic resin emulsions, fillers, aggregates, pigments, etc. as binders, and are finished in a pattern with three-dimensional formability by spraying, roller coating, trowel coating, etc. The material and filler greatly affect the paintability and become essential components. Unlike ordinary paints, undercoating is often performed to ensure the minimum film thickness regardless of the application means. The coating material composition is required to have an appropriate drying property in order to ensure its workability as a three-dimensional formability. Moreover, the same coating material is preferable from the adhesiveness and flexibility of undercoat and finish coating material. Under these conditions, the undercoat has a thickness of about 1 mm. On the other hand, there is skinning, which is a drawback of emulsion-based coating materials. This film is formed only in the vicinity of the surface and hinders the drying of the deep part. In the building finishing coating material which is mainly dried at room temperature, it is a composition which does not cause skinning in the construction environment. A drying acceleration method that does not cause this skinning phenomenon and does not affect the coating film performance has not been found. In general, the paint has no large particle size component corresponding to the aggregate, and has a specification in which a low film thickness is repeatedly applied and dried several times, and skinning hardly occurs.
解決しようとする課題は、建築用仕上塗材の塗布施工時、常温にあっては工期短縮、低温、高湿下では乾燥促進となる壁面仕上げ方法の提供である。 The problem to be solved is to provide a wall finishing method that shortens the construction period at room temperature and accelerates drying at low temperatures and high humidity during the application of a finish coating material for construction.
請求項１の発明は、ＪＩＳ Ａ６９０９に規定されるアクリル樹脂エマルション系建築用仕上塗材を、少なくとも下塗り、仕上げと分ける仕上げ方法であって、下塗りに、水と反応性を有する粒径１〜２０μｍの、酸化マグネシウム或いは酸化カルシウム粉末をアクリル樹脂エマルション系建築用仕上塗材１００重量部に１〜３重量部を添加し、塗付し、さらにその上に仕上げとしてアクリル樹脂エマルション系建築用仕上塗材を塗付することを特徴とする壁面仕上げ方法で、通常時は工期短縮、低温時、高湿時は乾燥促進させ、屋外においては雨水による塗膜流下のリスクを低減させる。
The invention of claim 1 is a finishing method in which an acrylic resin emulsion-based building finish coating material defined in JIS A6909 is divided into at least undercoat and finish, and the undercoat has a particle size of 1 to 20 μm having reactivity with water. 1 to 3 parts by weight of magnesium oxide or calcium oxide powder is added to 100 parts by weight of the acrylic resin emulsion-based building finish coating material, and then coated on the acrylic resin emulsion-based building finish coating material. This is a wall finishing method characterized by applying a coating, which shortens the construction period in normal times, promotes drying at low temperatures and high humidity, and reduces the risk of paint film flowing down due to rainwater outdoors.
請求項２の発明は、前記仕上げとして塗付するときローラー或いは鏝により立体造形的凹凸模様を有する意匠を付与する請求項１に記載の壁面仕上げ方法で、凹凸の模様が付与させた塗膜が厚い部分の乾燥も促進され、塗膜品質も向上する。 The invention according to claim 2 is a wall finishing method according to claim 1, wherein a coating having a three-dimensional concavo-convex pattern is imparted by a roller or a wrinkle when applied as the finish. Drying of thick parts is promoted and the coating quality is improved.
本発明の壁面仕上げ方法は建築用仕上塗材を別途に用意する必要が無く、現場で配合して、乾燥時間の短縮、低温、高湿下での乾燥が可能となる特徴がある。 The wall finishing method of the present invention is characterized in that it is not necessary to separately prepare a finishing coating material for construction, and it can be blended in the field to shorten the drying time and to dry under low temperature and high humidity.
本発明はＪＩＳ Ａ６９０９に規定され、合成樹脂エマルション系建築用仕上塗材のうち耐光性、密着性が良好なアクリル樹脂系エマルションが含まれる建築仕上塗材にアルカリ土類金属酸化物を添加し、下塗りとし、さらに前記建築仕上塗材を塗布して立体的な造形性を持つ模様を形成することで、工期の短期間化や屋外では不意の雨水流失のリスクを低減し、塗材在庫の圧縮ができる。
The present invention is defined in JIS A6909, and an alkaline earth metal oxide is added to a building finishing coating material containing an acrylic resin emulsion having good light resistance and adhesion among the synthetic resin emulsion building finishing coating materials, By applying the architectural finishing coating material as a base coat and forming a pattern with three-dimensional formability, the construction period is shortened and the risk of unexpected rainwater runoff is reduced, and the coating material inventory is compressed. Can do.
ＪＩＳ Ａ６９０９に規定される建築用仕上塗材は適用範囲として「この規格は、セメント、合成樹脂などの結合材、顔料、骨材などを主原料とし、主として建築物の内外壁又は天井を、吹付け、ローラー塗り、こて塗りなどによって立体的な造形性をもつ模様に仕上げる建築用仕上塗材について規定する。」とされる。本発明はこの建築用仕上塗材の中に内外壁に塗布され、上塗り材（着色トップコート）を使用しない合成樹脂エマルション系建築仕上材に適する。この仕上塗材は立体的造形の形成の他、顔料等の着色や骨材の色等で意匠を反映させることができる反面、立体的造形時に膜厚や隠蔽性を確保が必要で、仕上げと同様な下塗りが必要なことが多々あり、乾燥硬化を早めて、雨水による不意の流失を低減し、工期を短縮する他、乾燥硬化促進用の塗材を持つ必要がない特徴がある。 The architectural finish coating material specified in JIS A6909 is applicable as follows: “This standard is made mainly of cement, synthetic resin and other binders, pigments, aggregates, etc. It defines the finishing coating material for construction that finishes into a pattern with three-dimensional formability by attaching, roller coating, trowel coating, etc. " The present invention is suitable for a synthetic resin emulsion-based building finishing material that is applied to the interior and exterior walls in this building finishing coating material and does not use a top coating material (colored top coat). In addition to forming three-dimensional modeling, this finish coating material can reflect the design by coloring pigments and the color of aggregates, but on the other hand, it is necessary to ensure film thickness and concealment during three-dimensional modeling. In many cases, a similar undercoat is required, which accelerates drying and curing, reduces unexpected runoff due to rainwater, shortens the work period, and does not require a coating material for promoting drying and curing.
本発明の合成樹脂エマルション系建築仕上塗材に対してアルカリ土類金属酸化物の添加効果は単なる吸水作用では説明ができない。配合するアルカリ土類酸化物の吸水量では乾燥硬化速度は上げることができない。エマルションの破壊や架橋等が考えられるものの、仕上げ塗材として満足できる作業性があり、塗材に簡単に分散できる。これらは合成樹脂エマルション系建築塗材が骨材、充填剤が多く配合され、結合材の含有率も高くないことによるものと思われる。 The effect of adding an alkaline earth metal oxide to the synthetic resin emulsion building finish coating material of the present invention cannot be explained by a simple water absorption action. The drying and curing rate cannot be increased by the water absorption of the alkaline earth oxide to be blended. Despite emulsion breakage and crosslinking, it has satisfactory workability as a finish coating material and can be easily dispersed in the coating material. These are considered to be due to the fact that the synthetic resin emulsion-based architectural coating material contains a large amount of aggregate and filler, and the content of the binder is not high.
本発明に用いる合成樹脂エマルション系建築仕上塗材は耐候性やエマルションとして、安定性等に寄与するカルボキシル基を持つことが多いアクリル樹脂エマルションが結合材として含むものが好ましい。
前記エマルション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系樹脂、アクリル・スチレン系樹脂等のエマルションがある。
合成樹脂エマルション系建築用仕上塗材の市販品として アイカジョリパット、ジョリバットα（アイカ工業(株)、商品名、アクリル樹脂系）ベルアート（エスケー化研(株)、商品名、アクリル樹脂系）等がある。
The synthetic resin emulsion-based building finish coating material used in the present invention preferably includes an acrylic resin emulsion often having a carboxyl group that contributes to stability or the like as a binder as weather resistance or emulsion.
Examples of the emulsion include emulsions of acrylic ester copolymer resins, vinyl acetate / acrylic ester copolymer resins, silicon-modified acrylic resins, acrylic / styrene resins, and the like.
As a commercial product of synthetic resin emulsion-based finishing coating materials for construction, Aika Jolipat, Jolibat α (Aika Industry Co., Ltd., trade name, acrylic resin series) Bell Art (SK Kaken Co., Ltd., trade name, acrylic resin series), etc. There is.
アルカリ土類金属酸化物粉末としては酸化マグネシウム、軽焼酸化マグネシウム、酸化カルシウム、酸化バリウム等の粉末がある。入手性や毒性がないことで酸化マグネシウム、酸化カルシウムが好ましく。酸化マグネシウムは添加量を調節し易くさらに好ましい。
前記粉末の粒径は水和し、微粉化されるので、局在して問題が生じない１〜２０μｍが好ましい。１μｍ未満となると作業時の飛散浮遊や撹拌時の反応によるポットライフの低下がある。
添加量はアルカリ土類金属種により、含有率により異なり、また表面処理により遅効とすることもできる。酸化マグネシウムの粉末では塗材１００重量部に対して１〜３重量部を挙げることができるが、施工条件、仕上げ塗材により適宜添加量を増減する。
Examples of the alkaline earth metal oxide powder include magnesium oxide, light calcined magnesium oxide, calcium oxide, and barium oxide. Magnesium oxide and calcium oxide are preferred because they are not available or toxic. Magnesium oxide is more preferable because the amount added can be easily adjusted.
Since the particle size of the powder is hydrated and pulverized, it is preferably 1 to 20 μm, which does not cause local problems. When the thickness is less than 1 μm, there is a decrease in pot life due to scattering during work and reaction during stirring.
The amount added varies depending on the alkaline earth metal species, the content, and can be delayed by surface treatment. In the powder of magnesium oxide, 1 to 3 parts by weight can be mentioned with respect to 100 parts by weight of the coating material.
合成樹脂エマルション系建築仕上塗材は、一般的な水性エマルション塗料と大きく異なる点は粒径が比較的大きな骨材が入り立体的な造形性すなわち凹凸が形成され、部分的には被塗布面から距離が大きくなる。この条件でも、極力垂れを防ぐ必要がある。この垂れを防ぐ配合としてはシリカ等の微粉末がある。しかし、これのみであると水分が多く、乾燥性を損なう。このため、骨材と微粉末シリカの中間の粒径に位置する充填剤や体質顔料を配合して乾燥性も維持し、垂れ難い組成とする。また、樹脂エマルションは一般的に皮張りし易く、これを防ぐため、物性を満たす少量配合となる。これらの条件を満たす組成を商品として安定供給させるため、樹脂エマルション中へのカルボキシル基の導入、有機増粘剤、分散安定剤等が配合される。また、高固形分となる。本発明が効果が奏する理由は明確では無いが、これらが因子となっているものと考えられる。もし、水との反応での水分の減少と仮定するとあまりにも少量で乾燥を速める効果はない。配合物間の架橋やエマルション破壊とすると作業性に影響が及ぶ恐れが大きいが、前記、合成樹脂エマルション系建築仕上塗材の配合所以により、問題なく、乾燥性を上げることができると考えられる。 Synthetic resin emulsion-based building finishing coating materials differ greatly from general water-based emulsion paints in that they have aggregates with relatively large particle sizes and three-dimensional formability, that is, irregularities are formed, partially from the coated surface. The distance increases. Even under this condition, it is necessary to prevent dripping as much as possible. As a formulation for preventing this sagging, there is a fine powder such as silica. However, if it is only this, there is much water | moisture content and it impairs drying property. For this reason, the filler and extender pigment which are located in the middle particle diameter of an aggregate and fine powder silica are mix | blended, and it is set as the composition which maintains dryness and does not drip easily. In addition, resin emulsions are generally easy to skin, and in order to prevent this, a small amount is added to satisfy the physical properties. In order to stably supply a composition satisfying these conditions as a product, introduction of a carboxyl group into the resin emulsion, an organic thickener, a dispersion stabilizer, and the like are blended. Moreover, it becomes a high solid content. The reason why the present invention is effective is not clear, but it is considered that these are factors. If it is assumed that the water content is reduced by the reaction with water, the effect of accelerating the drying is too small. There is a high possibility that the workability will be affected if crosslinking between the blends or the emulsion is broken, but it is considered that the drying property can be improved without any problems because of the blending place of the synthetic resin emulsion-based architectural finishing coating material.
以下 実施例・比較例で説明する。 Examples and comparative examples will be described below.
配合例１
建築用仕上塗材としてジョリパットαＪＰ−１００をそのままで無添加のものを配合例１とした。
Formulation Example 1
As a finishing coating material for construction, Jolipat αJP-100 was used as it was, and an additive-free material was designated as Formulation Example 1.
配合例２
ジョリパットαＪＰ−１００を１００重量部にキョーワマグ１５０（協和化学工業(株)、酸化マグネシウム、平均粒径５．６μｍ）１重量部を配合したものを配合例２とした。
Formulation Example 2
Formulation Example 2 was prepared by blending 1 part by weight of Kyowa Mag 150 (Kyowa Chemical Industry Co., Ltd., magnesium oxide, average particle size 5.6 μm) with 100 parts by weight of Jolipat αJP-100.
配合例３
配合例２のキョーワマグ１５０を２重量部としたものを配合例３とした。
Formulation Example 3
Formulation Example 3 was prepared using 2 parts by weight of Kyowa Mug 150 of Formulation Example 2.
配合例４
配合例３のキョーワマグ１５０を酸化カルシウム粉末試薬特級に変えたものを配合例４とした。
Formulation Example 4
Formulation Example 4 was obtained by changing Kyowa Mug 150 of Formulation Example 3 to a special grade of calcium oxide powder reagent.
５０ｃｍ角の７ｍｍフレキシブルボードにジョリパットシーラーＪＳ−４１０（アイカ工業(株)、商品名）を０．２ｋｇ／ｍ２塗布し、下塗りとして配合例２を０．９ｋｇ／ｍ２を鏝にて塗布し、上塗りとして配合例１を２．０ｋｇ／ｍ２塗布し、実施例１の方法とした。なお、塗布環境、乾燥環境、乾燥時間は表２に従った。 Apply 0.2 kg / m 2 of Jolipat Sealer JS-410 (Aika Kogyo Co., Ltd., trade name) to a 7 mm flexible board of 50 cm square, and apply 0.9 kg / m 2 of Formulation Example 2 as an undercoat with a spear As a top coat, 2.0 kg / m 2 of Formulation Example 1 was applied to obtain the method of Example 1. The coating environment, drying environment, and drying time are in accordance with Table 2.
実施例１の配合例２を配合例３に変えた以外実施例１と同じく行い、実施例２の方法とした。 The same procedure as in Example 1 was carried out except that Formulation Example 2 of Example 1 was changed to Formulation Example 3, and the method of Example 2 was obtained.
実施例１の配合例２を配合例４に変えた以外実施例１と同じく行い、実施例３の方法とした。 The same procedure as in Example 1 was carried out except that Formulation Example 2 of Example 1 was changed to Formulation Example 4, and the method of Example 3 was adopted.
実施例１の上塗りの配合例１を配合例２に変えた以外実施例１と同じく行い、実施例４の方法とした。 The same procedure as in Example 1 was carried out except that Formulation Example 1 of the topcoat of Example 1 was changed to Formulation Example 2 to obtain the method of Example 4.
比較例１
実施例１の下塗りの配合例２を配合例１に変えた以外実施例１と同じく行い、比較例１の方法とした。
Comparative Example 1
The same procedure as in Example 1 was carried out except that Formulation Example 2 of the undercoat of Example 1 was changed to Formulation Example 1 to obtain the method of Comparative Example 1.
指触乾燥時間：塗膜表面を軽く指で触り、樹脂が指に付かなくなる時間
半硬化乾燥時間：塗膜を指先で静かにこすって塗膜にすり跡がつかなくなる時間
硬化乾燥時間：塗膜を指先で急速に繰り返しこすっても塗膜にすり跡がつかなくなる時間
Touch drying time: The time when the surface of the paint film is lightly touched with a finger and the resin does not stick to the finger. When the fingertips are repeatedly rubbed quickly, the coating film does not leave any marks
早塗り乾燥性１
実施例・比較例の下塗りを２３℃相対湿度８５％で塗布し、８時間後上塗りを２３℃相対湿度６０％で行い、２時間後、指で押して凹まないものを○、そうでないものを×とした。
早塗り乾燥性２
実施例・比較例の下塗りを７℃相対湿度８５％で塗布し、１６時間後上塗りを２３℃相対湿度６０％で行い、８時間後、指で押して凹まないものを○、そうでないものを×とした。
Quick coat drying 1
The undercoat of Example / Comparative Example was applied at 23 ° C. and 85% relative humidity, and after 8 hours, the top coat was applied at 23 ° C. and 60% relative humidity. It was.
Quick-coating drying property 2
The undercoat of Example / Comparative Example was applied at 7 ° C. and 85% relative humidity. After 16 hours, the top coat was applied at 23 ° C. and 60% relative humidity. After 8 hours, ○ It was.
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| JPH0829300B2 (en) * | 1989-03-07 | 1996-03-27 | 住宅・都市整備公団 | Method for forming nonflammable flexible multicolored coating layer for external use |
| JPH083083B2 (en) * | 1991-05-10 | 1996-01-17 | スズカファイン株式会社 | Water-based paint solidifying agent |
| JPH11228864A (en) * | 1998-02-10 | 1999-08-24 | Nippon Kayaku Co Ltd | Undercoating agent for coating material |
| JP2003172009A (en) * | 2001-09-25 | 2003-06-20 | Fujimoto Tosoten:Kk | Wall facing construction method |
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