JP2024044484A - How to finish the structure - Google Patents
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- JP2024044484A JP2024044484A JP2022150028A JP2022150028A JP2024044484A JP 2024044484 A JP2024044484 A JP 2024044484A JP 2022150028 A JP2022150028 A JP 2022150028A JP 2022150028 A JP2022150028 A JP 2022150028A JP 2024044484 A JP2024044484 A JP 2024044484A
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Landscapes
- Finishing Walls (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
【課題】十分にアンカー効果を発揮できる下塗材を塗布した後に上塗材を塗布して、基材と上塗材との密着性が高い仕上がりを提供する。【解決手段】基材に下塗材を塗布した後から上塗材を塗布する仕上げ方法であって、下塗材に樹脂結合材と繊維と骨材を含有させることにより、骨材が繊維の支えとなって下塗材から形成される塗膜表面から繊維が出ることによりアンカー効果が十分に付与されるため、基材と上塗材との密着性が高い仕上がりとなる。【選択図】なし[Problem] Applying a primer that can fully exert an anchoring effect, followed by a topcoat, provides a finish with high adhesion between the substrate and the topcoat. [Solution] A finishing method in which a primer is applied to a substrate, followed by a topcoat, is applied. By incorporating a resin binder, fibers, and aggregates in the primer, the aggregates act as support for the fibers, causing the fibers to protrude from the surface of the coating film formed by the primer, providing a sufficient anchoring effect, resulting in a finish with high adhesion between the substrate and the topcoat. [Selected drawing] None
Description
本発明は、構造物の内外壁面や天井面、柱や梁などの構造体の仕上げ方法に関するものである。 The present invention relates to a method for finishing structural members such as interior and exterior wall surfaces, ceiling surfaces, columns, and beams of structures.
一般的に、構造物の内外壁面や天井面、柱や梁などの構造体などには、美観や基材の耐候性や耐久性の向上、耐火性等の機能を付与するために塗材を塗布されていることが多い。
この塗材と構造体などに使用される基材を密着させるために、通常は基材に下塗材を塗布した後にこの塗材を上塗材として塗布して仕上げられる。
In general, coating materials are applied to the interior and exterior walls and ceiling surfaces of structures, as well as structures such as columns and beams, in order to improve the appearance, improve the weather resistance and durability of the base material, and provide functions such as fire resistance. It is often coated.
In order to bring this coating material into close contact with a base material used for a structure, etc., the base material is usually coated with an undercoat material and then this coating material is applied as a topcoat material for finishing.
この下塗材には、合成樹脂からなるプライマーもしくはシーラーと呼ばれる塗材を塗布して基材と上塗材との密着性を高めている。しかしながら、このプライマーもしくはシーラーと呼ばれる下塗材を塗布後、上塗材を塗布するまでに時間が空いた場合やごみなどが付着した場合に上塗材への密着性が低下し、上塗材が剥離してしまうことがあった。
そこで、特開平７－３１０４１８号公報では、下地モルタルの表面にプライマーとしてポリマーディスパージョンを塗布する上で、予め該ポリマーディスパージョン中に、微小繊維を混合分散させておくことが記載され、これにより、仕上げ材に対する接着効果に加えて自動的にメカニカルキー（アンカー）効果を得られることができる。
This undercoat material is coated with a coating material called a primer or sealer made of synthetic resin to enhance the adhesion between the base material and the topcoat material. However, if there is a gap between the application of the undercoat material called a primer or sealer and the application of the topcoat material, or if dust or the like adheres to the basecoat material, the adhesion to the topcoat material may decrease and the topcoat material may peel off. Sometimes I put it away.
Therefore, in JP-A-7-310418, it is described that before applying a polymer dispersion as a primer to the surface of the base mortar, fine fibers are mixed and dispersed in the polymer dispersion in advance. In addition to the adhesion effect to finishing materials, a mechanical key (anchor) effect can be automatically obtained.
しかしながら、ポリマーディスパージョン中に、微小繊維を混合分散させた場合でも、微小繊維が塗膜中に埋まってしまい表面に十分に露出できずにそのアンカー効果を発揮できないことがあった。
本発明の仕上げ方法は、十分にアンカー効果を発揮できる下塗材を塗布した後に上塗材を塗布して基材と上塗材との密着性が高い仕上がりを提供するものである。
However, even when microfibers are mixed and dispersed in a polymer dispersion, the microfibers are sometimes buried in the coating film and cannot be sufficiently exposed to the surface, failing to exert their anchoring effect.
The finishing method of the present invention provides a finish with high adhesion between the substrate and the topcoat material by applying a primer that can fully exert an anchor effect and then applying a topcoat material.
基材に下塗材を塗布し、上塗材を塗布する仕上げ方法であって、前記下塗材に樹脂結合材と繊維と骨材を含有させることである。
このことにより、下塗材から形成される塗膜にアンカー効果が付与されて基材と上塗材との密着性が高い仕上がりとなる。
The finishing method involves applying a primer to a substrate and then applying a topcoat, the primer containing a resin binder, fibers, and aggregates.
This gives the coating film formed from the undercoat material an anchor effect, resulting in a finish with high adhesion between the substrate and the topcoat material.
前記繊維の長さが前記骨材の粒径より長いことが好ましい。このことにより、下塗材から形成される塗膜のアンカー効果が十分に発揮されて、基材と上塗材との密着性がより高い仕上がりとなる。
前記上塗材の膜厚が０．２ｍｍ以上であることが好ましい。このことにより、下塗材に含有されている繊維や骨材が上塗材に覆われてきれいな仕上がりとなる。
It is preferable that the length of the fiber is longer than the particle size of the aggregate. This allows the anchor effect of the coating film formed from the undercoat material to be fully exerted, resulting in a finish with higher adhesion between the substrate and the topcoat material.
It is preferable that the thickness of the topcoat material is 0.2 mm or more. This allows the fibers and aggregates contained in the undercoat material to be covered with the topcoat material, resulting in a beautiful finish.
本発明の実施形態を説明する。
本発明は、基材に下塗材を塗布し、上塗材を塗布する仕上げ方法であって、前記下塗材に樹脂結合材と繊維と骨材を含有することを特徴とする仕上げ方法である。
Embodiments of the present invention will be described.
The present invention is a finishing method in which a base coat material is applied to a base material and a top coat material is applied thereto, and the finishing method is characterized in that the base coat material contains a resin binder, fibers, and aggregate.
まず、本発明の基材とは、構造物の内外壁面や天井面、柱や梁などの構造体などに使用されるもので、コンクリートやモルタル、窯業系サイディングボード，フレキシブルボード，ケイ酸カルシウム板，押出成形板，プレキャストコンクリート板，軽量気泡コンクリート板，石膏ボード等の板材等がある。
また、アルミニウム，鉄及びステンレス等の金属材料で形成されたもの、ベニヤ板や合板等の木質系のもの、合成樹脂を発泡させた断熱フォーム材なども挙げられる。
First, the substrate of the present invention is used for the interior and exterior wall surfaces and ceiling surfaces of structures, as well as structural members such as pillars and beams, and includes plate materials such as concrete, mortar, ceramic siding boards, flexible boards, calcium silicate boards, extrusion molding boards, precast concrete boards, lightweight aerated concrete boards, and gypsum boards.
Other examples include those made of metal materials such as aluminum, iron, and stainless steel, wood-based materials such as plywood and chipboard, and insulating foam materials made from foamed synthetic resins.
本発明の下塗材は、一般的にプライマーもしくはシーラーと呼ばれる塗材で、樹脂結合材と繊維と骨材を含有する。下塗材に樹脂結合材を含有することにより、基材と上塗材との密着性が優れたものとなる。
下塗材に繊維を含有することにより、下塗材から形成される塗膜の表面に繊維が突き出て、そのアンカー効果により上塗材との密着性が向上する。さらに、下塗材に繊維と骨材を含有することにより、繊維が骨材に乗り、下塗材から形成される塗膜の表面に繊維を安定的に突き出し、アンカー効果が十分に発揮され上塗材との密着性がより向上する。
The undercoat material of the present invention is a coating material generally called a primer or sealer, and contains a resin binder, fiber, and aggregate. By containing a resin binder in the undercoat material, the adhesion between the substrate and the topcoat material becomes excellent.
By including fibers in the undercoat material, the fibers protrude from the surface of the coating film formed from the undercoat material, and the anchor effect improves adhesion with the topcoat material. Furthermore, by including fibers and aggregates in the undercoat material, the fibers ride on the aggregate, stably protruding the fibers from the surface of the coating film formed from the undercoat material, and the anchor effect is fully exerted, further improving adhesion with the topcoat material.
この下塗材に含有する樹脂結合材は、塗料や接着剤に一般的に用いられる樹脂結合材であればよく、例えば、アクリル樹脂、ウレタン樹脂、エポキシ樹脂、メラミン樹脂、アルキッド樹脂、塩化ビニル樹脂、シリコーン樹脂、酢酸ビニル樹脂、エステル樹脂、スチレン樹脂、フッ素樹脂、ビニルアルコール樹脂、これらの樹脂が共重合させた樹脂、またはこれらの樹脂に他のモノマーが共重合させた樹脂等の合成樹脂が挙げられる。
これらの合成樹脂は単独で用いられてもよく、２種類以上が混合されて用いられてもよい。なお、この下塗材には、合成樹脂を水に分散させた合成樹脂エマルション、又は水や有機溶剤等の溶媒に溶解させた合成樹脂溶液等の形態のものが用いられる。
The resin binder contained in this undercoat material may be any resin binder commonly used in paints and adhesives, such as acrylic resin, urethane resin, epoxy resin, melamine resin, alkyd resin, vinyl chloride resin, Synthetic resins include silicone resins, vinyl acetate resins, ester resins, styrene resins, fluororesins, vinyl alcohol resins, resins copolymerized with these resins, and resins copolymerized with other monomers. It will be done.
These synthetic resins may be used alone or in combination of two or more. Note that this undercoat material may be in the form of a synthetic resin emulsion in which a synthetic resin is dispersed in water, or a synthetic resin solution in which a synthetic resin is dissolved in a solvent such as water or an organic solvent.
好ましくは、常温で乾燥した際にタックがあるものである。このような樹脂結合材を下塗材に使用することで、下塗材から形成される塗膜にタックが出て、上塗材との密着性が良くなる。なお、ここで言うタックとは、指で触れた際にべたつきが感じられることを言う。 Preferably, it is tacky when dried at room temperature. By using such a resin binder as an undercoat material, the coating film formed from the undercoat material becomes tacky, and the adhesion with the topcoat material is improved. Note that tack here refers to the feeling of stickiness when touched with fingers.
下塗材の樹脂結合材の固形分の含有率は、５～５０重量％が好ましい。含有率がこの範囲であれば、基材と上塗材との密着性が向上し、下塗材に含まれる繊維や骨材も保持することができる。
含有率が５重量％未満の場合は、密着性が十分に得られない可能性がある。また、含有する繊維や骨材を保持することが難しい。含有率が５０重量％より大きい場合は、繊維が樹脂結合材に埋もれてしまいアンカー効果が十分に発揮されない可能性がある。
The solid content of the resin binder of the undercoat material is preferably 5 to 50% by weight. If the content is within this range, the adhesion between the substrate and the topcoat material is improved, and the fibers and aggregates contained in the undercoat material can be retained.
If the content is less than 5% by weight, there is a possibility that sufficient adhesion cannot be obtained, and it is difficult to maintain the contained fibers and aggregates. If the content is more than 50% by weight, there is a possibility that the fibers are buried in the resin binder, and the anchor effect is not fully exerted.
より好ましくは５～２５重量％の範囲であり、この範囲であれば基材と上塗材との密着性に優れたものとなる。
この下塗材には繊維が含有される。下塗材に繊維を含有することにより、下塗材から形成される塗膜にアンカー効果が付与されて基材と上塗材との密着性が高い仕上がりとなる。
More preferably, the content is in the range of 5 to 25% by weight, and within this range, the adhesion between the base material and the top coat material will be excellent.
This primer material contains fibers. By containing fibers in the undercoat material, an anchoring effect is imparted to the coating film formed from the undercoat material, resulting in a finish with high adhesion between the base material and the topcoat material.
この下塗材に含有する繊維は、アクリル繊維，アラミド繊維，ビニロン繊維，ポリエチレン繊維，ポリプロピレン繊維，セルロース繊維，炭素繊維，ガラス繊維，金属繊維，天然繊維等が挙げられる。
これらの繊維の中でもこしがあるものが好ましい。この場合のこしとは、例えば繊維を指で曲げた際に元に戻ろうとすることで、このこしがないと下塗材に繊維を混ぜたり、吹付け等で塗装して力が加わった際に繊維が折れたり曲がったりしてアンカー効果が十分に発揮されない可能性がある。
Examples of fibers contained in this undercoat material include acrylic fibers, aramid fibers, vinylon fibers, polyethylene fibers, polypropylene fibers, cellulose fibers, carbon fibers, glass fibers, metal fibers, and natural fibers.
Among these fibers, those with stiffness are preferable. In this case, stiffness means that the fiber tries to return to its original shape when bent with your fingers, and if the fiber does not have stiffness, it may break or bend when mixed into the undercoat material or when applied by spraying or other means and force is applied, and the anchor effect may not be fully achieved.
また、無機繊維がより好ましい。無機繊維であれば燃えにくいため、不燃や耐火の性能が必要な内装や構造体等に施工しやすい。なかでもガラス繊維は入手しやすく、こしがあるためアンカー効果を十分に発揮することができるため好ましい。
前記繊維の長さは０．１～１０ｍｍの範囲が好ましい。繊維の長さが０．１ｍｍ未満の場合は、下塗材の表面に繊維が出ずアンカー効果が発揮されない可能性がある。
Inorganic fibers are more preferable. Inorganic fibers are less flammable, so they are easy to apply to interiors and structures that require non-combustible and fire-resistant properties. Among them, glass fibers are preferable because they are easy to obtain and have a good stiffness, so they can fully exert their anchoring effect.
The length of the fibers is preferably in the range of 0.1 to 10 mm. If the length of the fibers is less than 0.1 mm, the fibers may not reach the surface of the undercoat material, and the anchor effect may not be achieved.
繊維の長さが１０ｍｍより長い場合は、長すぎて繊維が折れてしまったり、たわんでしまったりしてアンカー効果が十分に発揮されない可能性がある。また、下塗材中にきれいに混合できない可能性や、下塗材を吹付けで塗装する場合に詰まってしまう可能性がある。
さらに、繊維の長さは、後述する骨材の粒径より長いことが好ましい。骨材の粒径より長いことにより、骨材が繊維を支えて下塗材から形成される塗膜の表面に繊維を突き出すことができ、アンカー効果を十分に発揮することができる。
If the length of the fibers is longer than 10 mm, the anchoring effect may not be sufficiently exhibited because the fibers are too long and may break or bend. In addition, there is a possibility that the primer cannot be mixed neatly into the base coat material, and that it may become clogged when the base coat material is sprayed.
Further, the length of the fibers is preferably longer than the particle size of the aggregate described below. By being longer than the particle size of the aggregate, the aggregate supports the fibers and allows the fibers to protrude onto the surface of the coating film formed from the undercoat material, thereby fully exhibiting the anchoring effect.
前記繊維の含有量は０．０１～５．０重量％の範囲が好ましい。繊維の含有量が０．０１重量％より少ない場合は、繊維の量が少な過ぎてアンカー効果が期待できない。５．０重量％より多い場合は、繊維の量が多過ぎて樹脂結合材の付着力を阻害してしまい上塗材との密着性が得られないことある。
より好ましくは０．１～３．０重量％の範囲である。この範囲であれば、効果的にアンカー効果を発揮することができる。
The content of the fibers is preferably in the range of 0.01 to 5.0% by weight. If the content of the fibers is less than 0.01% by weight, the amount of fibers is too small to expect an anchor effect. If the content of the fibers is more than 5.0% by weight, the amount of fibers is too large to inhibit the adhesive force of the resin binder, and adhesion with the topcoat material may not be obtained.
A more preferable range is 0.1 to 3.0% by weight, in which case the anchoring effect can be effectively exhibited.
この下塗材には骨材が含有される。下塗材に骨材を含有することにより、含有した繊維の支えとなって下塗材から形成される塗膜表面から繊維が出てアンカー効果を十分に発揮することができる。
この下塗材に含有する骨材は、塗材に一般的に用いられる骨材であればよく、例えば、炭酸カルシウム，珪砂，樹脂ビーズ，ガラスビーズ，パーライト，バーミキュライトなどが挙げられる。
This primer material contains aggregate. By containing aggregate in the undercoat material, the fibers support the contained fibers and come out from the surface of the coating film formed from the undercoat material, allowing the anchoring effect to be fully exerted.
The aggregate contained in this undercoating material may be any aggregate commonly used in coating materials, and examples thereof include calcium carbonate, silica sand, resin beads, glass beads, perlite, and vermiculite.
これらの骨材の中でも軽量骨材と呼ばれる比重が小さい骨材が好ましい。この下塗材は天井に塗布する場合があり、骨材の比重が大きいと負荷がかかり落下してしまうことがあるためである。
より好ましくは骨材の比重が１より小さいものであり、入手が容易な中空ガラスビーズ，パーライト，バーミキュライトが特に好ましい。そして、これらの骨材は無機質であるため、不燃や耐火の性能が必要な内装や構造体等に施工しやすい。
Among these aggregates, aggregates with a low specific gravity called lightweight aggregates are preferred. This is because this primer material is sometimes applied to the ceiling, and if the specific gravity of the aggregate is high, the load may be applied and the material may fall.
More preferably, the specific gravity of the aggregate is less than 1, and easily available hollow glass beads, perlite, and vermiculite are particularly preferred. Since these aggregates are inorganic, they can be easily applied to interiors and structures that require noncombustible and fireproof performance.
この骨材の大きさは、この下塗材に含有する繊維の長さより小さいことが好ましい。骨材の大きさが繊維の長さより大きいと、繊維が骨材に埋もれてしまいアンカー効果が十分に発揮されない可能性がある。
具体的にはこの骨材の粒径は０．０５～５．０ｍｍの範囲が好ましい。骨材の粒径が０．０５ｍｍより小さい場合は、繊維を支える効果が小さく密着性を向上させる効果が期待できない。
The size of the aggregate is preferably smaller than the length of the fibers contained in the base coat material. If the size of the aggregate is larger than the length of the fibers, the fibers may be buried in the aggregate and the anchoring effect may not be sufficiently exerted.
Specifically, the particle size of this aggregate is preferably in the range of 0.05 to 5.0 mm. When the particle size of the aggregate is smaller than 0.05 mm, the effect of supporting the fibers is small and the effect of improving adhesion cannot be expected.
骨材の粒径が５．０ｍｍより大きい場合は、下塗材の膜厚が厚くなるため下塗材の強度が弱くなり、上塗材を塗布した際に剥落する可能性がある。より好ましくは０．１～２．０ｍｍの範囲であり、この範囲であれば、下塗材の強度や上塗材との密着性が十分なものとなる。
なお、骨材の粒径は、金属製網ふるいを使用したふるい振とう機で測定した値である。
If the particle size of the aggregate is larger than 5.0 mm, the thickness of the undercoat material will be thick, weakening the strength of the undercoat material, and there is a possibility that it will fall off when the topcoat material is applied. More preferably, it is in the range of 0.1 to 2.0 mm, and within this range, the strength of the undercoat material and the adhesion with the topcoat material will be sufficient.
The particle size of the aggregate is a value measured using a sieve shaker with a metal mesh sieve.
この骨材の含有量は、樹脂結合材１００体積部に対して１０～１０００体積部の範囲であることが好ましい。骨材の含有量が樹脂結合材１００体積部に対して１０体積部より少ない場合は、繊維を支える効果が小さい。
骨材の含有量が樹脂結合材１００体積部に対して１０００体積部より多い場合は、下塗材の強度が下がってしまい上塗材を塗布した際に剥落する可能性がある。より好ましくは樹脂結合材１００体積部に対して１００～５００体積部の範囲であり、この範囲であれば、下塗材の強度や上塗材との密着性が十分なものとなる。
The content of the aggregate is preferably in the range of 10 to 1000 parts by volume relative to 100 parts by volume of the resin binder. If the content of the aggregate is less than 10 parts by volume relative to 100 parts by volume of the resin binder, the effect of supporting the fibers is small.
If the aggregate content is more than 1000 parts by volume per 100 parts by volume of resin binder, the strength of the undercoat material will decrease and there is a possibility that it will fall off when the topcoat material is applied. More preferably, it is in the range of 100 to 500 parts by volume per 100 parts by volume of resin binder, and if it is in this range, the strength of the undercoat material and the adhesion with the topcoat material will be sufficient.
この下塗材には、上記の他に本発明の効果を損なわない範囲で、一般的に塗材に含有されるものを含有することができる。例えば、溶媒としての水や有機溶剤、消泡剤、分散剤、粘性調整剤、粘着付与剤、造膜助剤、凍結防止剤、顔料、防腐剤、防藻剤、防カビ剤等の添加剤を含有することができる。
本発明は、上記下塗材を塗布し、上塗材を塗布する仕上げ方法である。この上塗材としては、構造物の内外壁面や天井面、柱や梁などの構造体の仕上げで使用される塗材であれば良いが、好ましくは建築仕上塗材や耐火被覆材のような膜厚が０．２ｍｍ以上あるものが良い。
In addition to the above, this undercoat material can contain additives that are generally contained in coating materials, as long as they do not impair the effects of the present invention.For example, it can contain additives such as water or organic solvent as a solvent, defoamer, dispersant, viscosity adjuster, tackifier, film-forming assistant, antifreeze agent, pigment, preservative, algae inhibitor, and fungicide.
The present invention is a finishing method of applying the above-mentioned undercoat material and then applying a topcoat material. The topcoat material may be any coating material used for finishing the interior and exterior wall surfaces and ceiling surfaces of structures, such as pillars and beams, but is preferably one with a film thickness of 0.2 mm or more, such as architectural finishing coating materials and fireproof coating materials.
上塗材の膜厚が０．２ｍｍより薄い場合、下塗材から形成される塗膜表面から出た繊維や骨材の凹凸が、上塗材から形成される塗膜表面にその形状が表れて仕上がりが悪くなる可能性がある。より好ましくは膜厚が０．５～３０ｍｍの範囲である。
膜厚が０．５ｍｍ以上の場合は、下塗材から形成される塗膜表面から出た繊維や骨材の凹凸を覆うことができるため仕上がりに影響されず、下塗材と上塗材の密着も良好なものとなる。膜厚が３０ｍｍより厚い場合は、上塗材が重くなり剥落する可能性がある。
If the film thickness of the top coat material is thinner than 0.2 mm, the unevenness of fibers and aggregates coming out from the surface of the paint film formed from the base coat material will appear on the surface of the paint film formed from the top coat material, resulting in poor finish. It could get worse. More preferably, the film thickness is in the range of 0.5 to 30 mm.
When the film thickness is 0.5 mm or more, it is possible to cover the unevenness of the fibers and aggregate that come out from the surface of the paint film formed from the base coat material, so the finish is not affected, and the adhesion between the base coat material and the top coat material is also good. Become something. When the film thickness is thicker than 30 mm, the top coat material becomes heavy and may peel off.
この上塗材は、ＪＩＳ Ａ６９０９の軽量骨材仕上塗材や軽量モルタル，耐火モルタル等の軽量骨材を含有した塗材であることが好ましい。上塗材が軽量骨材を含有した塗材であれば、上塗材から形成される塗膜の重量が軽くなり剥落する可能性が低くなる。
また、一般的に軽量骨材を含有した塗材から形成される塗膜の表面は凹凸状で基材と点で接着している場合があるため密着性があまり良くないが、本発明の下塗材のアンカー効果により剥落し難い仕上がりとなる。特に軽量骨材を含有した塗材から形成される塗膜は空隙が多く、繊維が入り込みやすいため、その効果が十分に発揮される。
This topcoat material is preferably a coating material containing lightweight aggregate such as a lightweight aggregate finishing coating material of JIS A6909, lightweight mortar, fireproof mortar, etc. If the topcoat material is a coating material containing lightweight aggregate, the weight of the coating film formed from the topcoat material becomes lighter and the possibility of peeling off is reduced.
In addition, the surface of the coating film formed from a coating material containing lightweight aggregate is generally uneven and may be bonded to the substrate at points, so the adhesion is not very good, but the anchor effect of the undercoat material of the present invention makes it difficult to peel off. In particular, the coating film formed from a coating material containing lightweight aggregate has many voids and is easy for fibers to penetrate, so the effect is fully exerted.
そして、一般的に軽量骨材を含有した塗材から形成される塗膜は強度が弱いため、その入り込んだ繊維が、軽量骨材を含有した塗材から形成される塗膜を補強することができる。
これらの下塗材や上塗材を塗装する方法は、特に制限されるものではなく、一般的に行われている吹付けやローラー、刷毛、コテ、ヘラ等による塗装がある。
In addition, since coating films formed from coating materials containing lightweight aggregates generally have weak strength, the incorporated fibers can reinforce the coating films formed from coating materials containing lightweight aggregates.
The method for applying these undercoat and topcoat materials is not particularly limited, and includes commonly used methods such as spraying, or application with a roller, brush, trowel, spatula, or the like.
本発明の下塗材の場合は、繊維や骨材が含有されているため、その長さや大きさによってはローラーや刷毛などの塗装が難しい場合がある。また、合成樹脂を発泡させた断熱フォーム材を現場で吹付けたもの等の表面形状が複雑な下地の場合もローラー塗装が難しい場合があり、吹付けなどの塗装方法が均一な塗膜を形成することができるため好ましい。
本発明の上塗材で好ましく用いられる軽量骨材を含有した塗材の場合は、ローラー塗装が難しいため、吹付けやコテで塗装することが好ましい。
In the case of the undercoat material of the present invention, since it contains fibers and aggregates, depending on its length and size, it may be difficult to apply it with a roller or brush. In addition, in the case of a base with a complex surface shape, such as a base sprayed on-site with a heat insulating foam material made by foaming synthetic resin, it may be difficult to apply it with a roller, so a coating method such as spraying is preferable because it can form a uniform coating film.
In the case of coating materials containing lightweight aggregates, which are preferably used in the topcoat material of the present invention, roller coating is difficult, so it is preferable to apply the coating by spraying or trowel.
以下に本発明の仕上げ方法の評価結果を示した。
表１に示す各原材料を、ディゾルバーを用いて均一に撹拌し下塗材を作製した。樹脂結合材として、不揮発分が５０％のアクリル樹脂エマルションを用いた。このアクリル樹脂エマルションを乾燥させて表面を触るとべたつきがあった。
The evaluation results of the finishing method of the present invention are shown below.
Each raw material shown in Table 1 was uniformly stirred using a dissolver to prepare an undercoat material. An acrylic resin emulsion with a nonvolatile content of 50% was used as the resin binder. When this acrylic resin emulsion was dried and the surface was touched, it was sticky.
繊維として、長さが０．０５ｍｍ，６ｍｍ，１２ｍｍのガラス繊維、長さが６ｍｍのアクリル繊維を用いた。なお、ガラス繊維は指で曲げた際に元に戻ったが、アクリル繊維は元に戻らず曲がったままだった。
骨材として、比重が０．４で平均粒径が０．０５ｍｍと１ｍｍの中空ガラスビーズを用いた。なお、この骨材の粒径は、金属製網ふるいを使用したふるい振とう機で粒度分布を測定して求めたメディアン径である。
The fibers used were glass fibers with lengths of 0.05 mm, 6 mm, and 12 mm, and acrylic fibers with a length of 6 mm. When the glass fibers were bent with a finger, they returned to their original shape, but the acrylic fibers did not return to their original shape and remained bent.
Hollow glass beads with a specific gravity of 0.4 and average particle sizes of 0.05 mm and 1 mm were used as aggregates. The particle size of the aggregates was the median size determined by measuring the particle size distribution using a sieve shaker with a metal mesh sieve.
これらの原材料を用いて作製した各下塗材を、基材のモルタルに吹付けて塗装した。下塗材が乾燥した後、上塗材を吹付け塗装し試験体を作製した。
上塗材としては、ＪＩＳ Ａ６９０９の軽量骨材仕上塗材に準拠した塗材と、ＪＩＳ Ｋ５６６３の（２種）に準拠した塗料を用いた。なお、軽量骨材仕上塗材の膜厚は約５ｍｍ、合成樹脂エマルションペイントの膜厚は約１００μｍだった。
このようにして作製した試験体の外観と密着性を確認した。表２に各試験体の仕様と確認結果を示した。
Each undercoat material prepared using these raw materials was sprayed onto mortar as a base material. After the base coat material had dried, a top coat material was spray-painted to prepare a test specimen.
As the top coating material, a coating material based on JIS A6909 lightweight aggregate finishing coating material and a coating material based on JIS K5663 (type 2) were used. The film thickness of the lightweight aggregate finishing coating material was approximately 5 mm, and the film thickness of the synthetic resin emulsion paint was approximately 100 μm.
The appearance and adhesion of the test specimen thus prepared were confirmed. Table 2 shows the specifications and confirmation results for each test piece.
試験体の外観は、目視で塗膜表面を確認した。仕様１２は、上塗材の膜厚が薄いため、下塗材に含有している繊維が試験体の塗膜表面に出てしまい見栄えが悪かった。仕様８は、試験体作製で下塗材を吹付けたときに詰まることがあり作業性が悪かった。
試験体の密着性は、ＪＩＳ Ａ６９０９ ７．１０付着強さ試験に準拠して確認した。
ただし、試験は試験用基板全面に下塗材と上塗材を吹付け塗装したものを、上部引張り用鋼製ジグを貼付け、ジグの周り４辺に基板に達するまで切込みを入れた後、引張試験機を用いて確認した。
The appearance of the test specimen was confirmed by visual inspection of the coating surface. Specification 12 had a poor appearance because the topcoat was thin, and the fibers contained in the undercoat were visible on the surface of the test specimen. Specification 8 had poor workability because the undercoat was clogged when spraying the test specimen.
The adhesion of the test specimens was confirmed in accordance with JIS A6909 7.10 Adhesion Strength Test.
However, for the test, the entire surface of the test substrate was sprayed with the primer and topcoat, a steel jig for upper tension was attached, and cuts were made around the four sides of the jig until it reached the substrate, and then the test was checked using a tensile testing machine.
下塗材に繊維が含有されていない仕様１，２は、下塗材側の上塗材表層から剥離し、付着力がなかった。下塗材に繊維が含有している試験体は、上塗材表層から剥離したものはほとんどなく、付着力も上がった。
仕様７は、下塗材に含有された繊維の量が多く下塗材のタックが少なくなったためか、一部で上塗材表層から剥がれている箇所があった。
Specifications 1 and 2, in which the undercoat material did not contain fibers, peeled off from the surface layer of the topcoat material on the undercoat side and had no adhesion. In the test specimens in which the undercoating material contained fibers, almost no peeling occurred from the surface layer of the topcoat material, and the adhesion strength was also increased.
In Specification 7, there were some areas where the top coat had peeled off from the surface layer, probably because the amount of fibers contained in the undercoat was large and the tack of the undercoat was low.
仕様８は、下塗材に含有された繊維の長さが長すぎて倒れてしまい、下塗材から形成される塗膜表面を繊維が覆いタックが少なくなったためか、一部で上塗材表層から剥がれている箇所があった。
仕様９は、下塗材に含有された繊維の長さが短く、下塗材から形成される塗膜表面に繊維が出ておらずアンカー効果が発揮されなかったためか、一部で上塗材表層から剥がれている箇所があった。
With Specification 8, the fibers contained in the primer were too long and collapsed, causing some areas to peel off from the surface of the topcoat, possibly because the fibers covered the surface of the coating formed by the primer and reduced tack.
Specification 9 had some areas that peeled off from the surface of the topcoat, possibly because the length of the fibers contained in the primer was short and the fibers did not reach the surface of the coating film formed from the primer, preventing the anchor effect.
仕様１０は、下塗材に含有された骨材の割合が多かったためか、一部で下塗材から剥がれている箇所があった。
仕様１１は、下塗材に含有された繊維がアクリル繊維でこしが弱く、下塗材から形成される塗膜表面に繊維が出ておらずアンカー効果が発揮されなかったためか、一部で上塗材表層から剥がれている箇所があった。
Specification 10 had some areas that had peeled off from the primer, possibly due to the high proportion of aggregate contained in the primer.
Specification 11 had some areas that peeled off from the surface of the topcoat, possibly because the fibers contained in the primer were acrylic fibers that were weak and did not reach the surface of the coating film formed from the primer, preventing the anchor effect.
Claims (3)
前記下塗材に繊維と骨材を含有することを特徴とする仕上げ方法。 A finishing method in which a base coat material is applied to a base material and a top coat material is applied,
A finishing method characterized in that the primer material contains fibers and aggregate.
3. The finishing method according to claim 1, wherein the top coat material has a thickness of 0.2 mm or more.
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