JP2010235886A - Vibration damping coating composition for roof and roof structure - Google Patents

Vibration damping coating composition for roof and roof structure Download PDF

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JP2010235886A
JP2010235886A JP2009087954A JP2009087954A JP2010235886A JP 2010235886 A JP2010235886 A JP 2010235886A JP 2009087954 A JP2009087954 A JP 2009087954A JP 2009087954 A JP2009087954 A JP 2009087954A JP 2010235886 A JP2010235886 A JP 2010235886A
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mass
roof
coating composition
resin particles
vibration
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Junichiro Kimura
純一朗 木村
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CCI Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration damping coating composition for roofs that enhances reduction effect on sounds of falling rain and controlling effect on generation of foaming in a coated film, and can easily improve coating property and adhesion, and to provide a roof structure. <P>SOLUTION: This vibration damping coating composition for roofs includes: an aqueous resin dispersion where resin particles to form a coated film 12 are dispersed in an aqueous dispersion medium; and a filler containing calcium carbonate and barium sulfate. The content of the filler is 160-330 pts.mass based on 100 pts.mass of the resin particle, and 120-230 pts.mass based on the water content of 100 pts.mass. The content of the calcium carbonate is 100-450 pts.mass based on 100 pts.mass of the barium sulfate. The vibration damping coating composition for roofs is coated on a metallic roofing 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、屋根用制振塗料組成物及びそれを用いた屋根構造に関する。   The present invention relates to a vibration-damping coating composition for roof and a roof structure using the same.

制振性を考慮した屋根構造としては、屋根材と下地材とを制振性接着剤を用いて接着した構造、折板の裏面側に制振シートを貼設した構造等が知られている(特許文献1及び2参照)。こうした屋根構造により、降雨時に金属製の屋根材にて発生する雨音が低減される。また、屋根材に塗布する塗料としては、マイカ等の鱗片状顔料を含有する塗料が知られている(特許文献3参照)。   As a roof structure in consideration of vibration damping properties, a structure in which a roof material and a base material are bonded using a vibration damping adhesive, a structure in which a vibration damping sheet is pasted on the back side of a folded plate, and the like are known. (See Patent Documents 1 and 2). Such a roof structure reduces the sound of rain generated by metal roofing materials during rainfall. Moreover, the coating material containing scaly pigments, such as mica, is known as a coating material applied to a roofing material (refer patent document 3).

特開2005−009205号公報JP 2005-009205 A 特開平10−306550号公報JP-A-10-306550 特開2003−238897号公報JP 2003-238897 A

ところで、屋根用制振塗料組成物では、例えば乾燥温度を高めるにしたがって、塗膜の表面外観に凹凸が生じたり、塗膜にピンホールが形成したりする現象が発生し易くなる。この現象は、一般にワキと呼ばれており、塗膜表面の欠陥となり得る。従来の屋根用制振塗料組成物では、そうしたワキの発生を抑制するとともに、金属製の屋根材に対する組成物の塗布性、塗膜の密着性及び雨音低減効果を高めること実現するには至っていない。なお、塗膜の密着性が十分に得られない場合、塗膜の耐久性が十分に得られなくなり、ひいては雨音低減効果を低めるといった問題がある。さらに、組成物の塗布性は、塗布効率の低下を招くことになる。   By the way, in the vibration-damping coating composition for roofs, for example, as the drying temperature is increased, the surface appearance of the coating film becomes uneven or the pinhole is easily formed in the coating film. This phenomenon is generally referred to as an armpit and can be a defect on the surface of the coating film. In conventional anti-vibration coating compositions for roofs, it has been achieved to suppress the occurrence of such cracks and to improve the coating properties of coatings on metal roofing materials, the adhesion of coating films, and the effect of reducing rain noise. Not in. In addition, when the adhesiveness of the coating film is not sufficiently obtained, there is a problem that the durability of the coating film cannot be sufficiently obtained, and as a result, the rain noise reduction effect is lowered. Furthermore, the applicability of the composition causes a decrease in application efficiency.

本発明は、組成物中に含まれる樹脂粒子及び水分に対して、所定量の炭酸カルシウム及び硫酸バリウムを含有させることで、雨音低減効果及びワキの発生の抑制効果が十分に発揮されるとともに、塗布性及び密着性も改善されることを見出すことでなされたものである。本発明の目的は、雨音低減効果及びワキの発生の抑制効果を高めるとともに、塗布性及び密着性を改善することの容易な屋根用制振塗料組成物及び屋根構造を提供することにある。   In the present invention, by containing a predetermined amount of calcium carbonate and barium sulfate with respect to the resin particles and moisture contained in the composition, the effect of reducing rain noise and suppressing the occurrence of oysters are sufficiently exhibited. It was made by finding out that the coating property and adhesion were also improved. An object of the present invention is to provide a roof anti-vibration coating composition and a roof structure that are easy to improve the rain noise reduction effect and the suppression effect of the occurrence of wrinkles and improve the coating properties and adhesion.

上記の目的を達成するために、請求項1に記載の発明の屋根用制振塗料組成物は、塗膜を形成する樹脂粒子が水系分散媒に分散した水系樹脂分散液と、炭酸カルシウム及び硫酸バリウムからなる充填剤とを含有してなり、金属製の屋根材に塗布される屋根用制振塗料組成物であって、前記充填剤の含有量は、前記樹脂粒子100質量部に対して160〜330質量部であるとともに、水分100質量部に対して120〜230質量部であり、前記炭酸カルシウムの含有量は、前記硫酸バリウム100質量部に対して100〜450質量部であることを要旨とする。   In order to achieve the above object, the vibration-damping coating composition for roof according to claim 1 includes an aqueous resin dispersion in which resin particles forming a coating film are dispersed in an aqueous dispersion medium, calcium carbonate and sulfuric acid. It is a vibration-damping coating composition for roof, which contains a filler made of barium and is applied to a metal roofing material, and the content of the filler is 160 parts by mass with respect to 100 parts by mass of the resin particles. It is -330 mass parts, and is 120-230 mass parts with respect to 100 mass parts of water | moisture content, The content of the said calcium carbonate is 100-450 mass parts with respect to 100 mass parts of said barium sulfates And

請求項2に記載の発明は、請求項1に記載の屋根用制振塗料組成物において、前記樹脂粒子としてアクリル系樹脂粒子を含むことを要旨とする。
請求項3に記載の発明の屋根構造は、請求項1又は請求項2に記載の屋根用制振塗料組成物から形成された塗膜が金属製の屋根材に積層されてなることを要旨とする。
The invention according to claim 2 is characterized in that, in the vibration-damping coating composition for roof according to claim 1, acrylic resin particles are included as the resin particles.
The gist of the roof structure of the invention described in claim 3 is that the coating film formed from the vibration-damping coating composition for roof according to claim 1 or 2 is laminated on a metal roofing material. To do.

本発明によれば、雨音低減効果及びワキの発生の抑制効果を高めるとともに、塗布性及び密着性を改善することが容易となる。   ADVANTAGE OF THE INVENTION According to this invention, it becomes easy to improve an applicability | paintability and adhesiveness while improving the rain sound reduction effect and the suppression effect of the occurrence of a bran.

本実施形態の屋根構造を示す部分断面図。The fragmentary sectional view which shows the roof structure of this embodiment. 雨音試験装置の概略を示す模式図。The schematic diagram which shows the outline of a rain sound test apparatus.

以下、本発明を具体化した実施形態を詳細に説明する。
本実施形態における屋根用制振塗料組成物には、塗膜を形成する樹脂粒子が水系分散媒に分散した水系樹脂分散液と、炭酸カルシウム及び硫酸バリウムからなる充填剤とが含有されている。
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described in detail.
The vibration-damping coating composition for roof according to the present embodiment contains an aqueous resin dispersion in which resin particles forming a coating film are dispersed in an aqueous dispersion medium, and a filler composed of calcium carbonate and barium sulfate.

樹脂粒子を構成する高分子材料としては、例えばアクリル系樹脂、アクリル/スチレン系樹脂、ウレタン系樹脂、フェノール系樹脂、塩化ビニル系樹脂、酢酸ビニル系樹脂、酢酸ビニル/アクリル系樹脂、エチレン/酢酸ビニル系樹脂、エポキシ系樹脂、ポリエステル系樹脂、アルキッド系樹脂、アクリロニトリル/ブタジエン共重合ゴム、スチレン/ブタジエン共重合ゴム、ブタジエンゴム、及びイソプレンゴムから選ばれる少なくとも一種が挙げられる。なお、これらの高分子材料は変性体であってもよい。   Examples of the polymer material constituting the resin particles include acrylic resins, acrylic / styrene resins, urethane resins, phenol resins, vinyl chloride resins, vinyl acetate resins, vinyl acetate / acrylic resins, ethylene / acetic acid. Examples thereof include at least one selected from vinyl resins, epoxy resins, polyester resins, alkyd resins, acrylonitrile / butadiene copolymer rubber, styrene / butadiene copolymer rubber, butadiene rubber, and isoprene rubber. These polymer materials may be modified.

樹脂粒子は、単独種の高分子材料から形成されていてもよいし、複数種の高分子材料から形成されていてもよい。さらに、水系樹脂分散液には、これらの高分子材料から構成される樹脂粒子を単独で含有させてもよいし、複数種の樹脂粒子を含有させてもよい。   The resin particles may be formed of a single type of polymer material or may be formed of a plurality of types of polymer material. Furthermore, the aqueous resin dispersion may contain resin particles composed of these polymer materials alone, or may contain a plurality of types of resin particles.

樹脂粒子の中でも、制振性能が発揮される温度領域を常温付近に調整することが容易であるという観点からアクリル系樹脂粒子を含むことが好ましい。
アクリル系樹脂粒子を形成するアクリル系樹脂としては、アクリル酸、アクリル酸エステル、メタクリル酸及びメタクリル酸エステルを単量体とする単独重合体、これらの単独重合体の混合物、並びにこれらの単量体が重合した共重合体が挙げられる。アクリル酸エステル及びメタクリル酸エステルとしては、メチルエステル、エチルエステル、プロピルエステル、ブチルエステル、2−エチルヘキシルエステル、エトキシエチルエステル等が挙げられる。
Among the resin particles, it is preferable to include acrylic resin particles from the viewpoint that it is easy to adjust the temperature range in which the vibration damping performance is exhibited to around room temperature.
Examples of the acrylic resin forming the acrylic resin particles include homopolymers containing acrylic acid, acrylic ester, methacrylic acid and methacrylic ester as monomers, mixtures of these homopolymers, and monomers. And a copolymer obtained by polymerizing. Examples of acrylic acid ester and methacrylic acid ester include methyl ester, ethyl ester, propyl ester, butyl ester, 2-ethylhexyl ester, ethoxyethyl ester and the like.

アクリル系樹脂粒子の中でも、制振性能が発揮される温度領域を常温付近に調整することがさらに容易であるという観点から、メタクリル酸メチルとアクリル酸ブチルとの共重合体であることが好ましい。   Among the acrylic resin particles, a copolymer of methyl methacrylate and butyl acrylate is preferable from the viewpoint that it is easier to adjust the temperature range in which vibration damping performance is exhibited to around room temperature.

樹脂粒子の全量に対するアクリル系樹脂粒子の含有量は、好ましくは90質量%以上、より好ましくは95質量%以上である。最も好ましくは樹脂粒子の全量がアクリル系樹脂粒子である。   The content of the acrylic resin particles with respect to the total amount of the resin particles is preferably 90% by mass or more, more preferably 95% by mass or more. Most preferably, the total amount of resin particles is acrylic resin particles.

樹脂粒子を分散する水系分散媒としては、水、及び水と一価アルコールとの混合液が挙げられる。一価アルコールとしては、メタノール、エタノール等が挙げられる。
炭酸カルシウム及び硫酸バリウムからなる充填剤は、塗膜の制振性能を高める。炭酸カルシウムは、粉体状をなしたものであれば特に限定されない。炭酸カルシウムとしては、例えば軽質炭酸カルシウム及び重質炭酸カルシウムが挙げられる。こうした炭酸カルシウムは、単独種を含有させてもよいし、複数種を組み合わせて含有させてもよい。
Examples of the aqueous dispersion medium for dispersing the resin particles include water and a mixed liquid of water and a monohydric alcohol. Examples of the monohydric alcohol include methanol and ethanol.
The filler composed of calcium carbonate and barium sulfate enhances the vibration damping performance of the coating film. Calcium carbonate is not particularly limited as long as it is in a powder form. Examples of calcium carbonate include light calcium carbonate and heavy calcium carbonate. Such calcium carbonate may contain a single species or a combination of a plurality of species.

硫酸バリウムとしては、例えばバライト鉱物の粉砕品、沈降性硫酸バリウムが挙げられる。こうした硫酸バリウムは、単独種を含有させてもよいし、複数種を組み合わせて含有させてもよい。   Examples of barium sulfate include pulverized barite minerals and precipitated barium sulfate. Such barium sulfate may contain a single species or a combination of a plurality of species.

上記充填剤の含有量は、組成物中に含まれる樹脂粒子100質量部に対して160〜330質量部である。充填剤の含有量が組成物中に含まれる樹脂粒子100質量部に対して160質量部未満の場合、雨音低減効果が十分に得られないおそれがある。一方、充填剤の含有量が組成物中に含まれる樹脂粒子100質量部に対して330質量部を超える場合、金属製の屋根材に対する組成物の塗布性及び金属製の屋根材に対する塗膜の密着性が十分に得られないおそれがある。   Content of the said filler is 160-330 mass parts with respect to 100 mass parts of resin particles contained in a composition. When the content of the filler is less than 160 parts by mass with respect to 100 parts by mass of the resin particles contained in the composition, the rain noise reduction effect may not be sufficiently obtained. On the other hand, when the content of the filler exceeds 330 parts by mass with respect to 100 parts by mass of the resin particles contained in the composition, the coating property of the composition on the metal roofing material and the coating film on the metal roofing material Adhesion may not be sufficiently obtained.

また、充填剤の含有量は、組成物中に含まれる水分100質量部に対して120〜230質量部である。充填剤の含有量が組成物中に含まれる水分100質量部に対して120質量部未満の場合、ワキが発生し易くなるという問題がある。一方、充填剤の含有量が組成物中に含まれる水分100質量部に対して230質量部を超える場合、上記の塗布性が十分に得られないおそれがある。   Moreover, content of a filler is 120-230 mass parts with respect to 100 mass parts of water | moisture contents contained in a composition. When the content of the filler is less than 120 parts by mass with respect to 100 parts by mass of water contained in the composition, there is a problem that the cracking is likely to occur. On the other hand, when content of a filler exceeds 230 mass parts with respect to 100 mass parts of water contained in a composition, there exists a possibility that said applicability | paintability may not fully be obtained.

さらに、炭酸カルシウムの含有量は、硫酸バリウム100質量部に対して100〜450質量部である。炭酸カルシウムの含有量が硫酸バリウム100質量部に対して100質量部未満の場合、雨音低減効果が十分に得られないおそれがある。一方、炭酸カルシウムの含有量が硫酸バリウム100質量部に対して450質量部を超える場合についても、雨音低減効果が十分に得られないおそれがある。   Furthermore, the content of calcium carbonate is 100 to 450 parts by mass with respect to 100 parts by mass of barium sulfate. When the content of calcium carbonate is less than 100 parts by mass with respect to 100 parts by mass of barium sulfate, the rain noise reduction effect may not be sufficiently obtained. On the other hand, even when the content of calcium carbonate exceeds 450 parts by mass with respect to 100 parts by mass of barium sulfate, the rain noise reduction effect may not be sufficiently obtained.

炭酸カルシウムの平均粒径は、塗布性、密着性、及び雨音低減効果を高めるとともに、ワキの発生を抑制することがさらに容易にするという観点から、好ましくは1.0〜7.0μm、より好ましくは1.2〜5.0μm、さらに好ましくは1.5〜3.5μmである。なお、平均粒径は、比表面積から算出される平均粒径を示す。すなわち、粉体比表面積測定装置によって1g当たりの比表面積値を用いて下記計算式から算出した平均粒径である。   The average particle size of calcium carbonate is preferably 1.0 to 7.0 μm, from the viewpoint of enhancing applicability, adhesion, and rain noise reduction effect, and further facilitating suppression of the occurrence of cracks. Preferably it is 1.2-5.0 micrometers, More preferably, it is 1.5-3.5 micrometers. In addition, an average particle diameter shows the average particle diameter computed from a specific surface area. That is, it is the average particle diameter calculated from the following formula using the specific surface area value per gram by the powder specific surface area measuring device.

平均粒子径(μm)=6/(比重×比表面積)×10000
硫酸バリウムの平均粒径は、分散性等を考慮すると、レーザー回折法にて測定した平均粒径において、例えば0.1〜100μmの範囲が好適である。
Average particle diameter (μm) = 6 / (specific gravity × specific surface area) × 10000
In consideration of dispersibility and the like, the average particle diameter of barium sulfate is preferably in the range of, for example, 0.1 to 100 μm in the average particle diameter measured by a laser diffraction method.

屋根用制振塗料組成物には、上述した所定量の充填剤の含有による作用効果を阻害しない程度の量であれば、必要に応じて、上記充填剤以外の充填剤を含有させることもできる。上記充填剤以外の充填剤としては、例えばマイカ、タルク、クレー、炭酸マグネシウム、ガラス、シリカ、酸化アルミニウム、アルミニウム、水酸化アルミニウム、鉄、酸化チタン、酸化鉄、珪藻土、ゼオライト、フェライト等が挙げられる。   If necessary, the roof vibration-damping coating composition may contain a filler other than the above fillers as long as it does not impair the effects of the above-described inclusion of the predetermined amount of filler. . Examples of fillers other than the above fillers include mica, talc, clay, magnesium carbonate, glass, silica, aluminum oxide, aluminum, aluminum hydroxide, iron, titanium oxide, iron oxide, diatomaceous earth, zeolite, and ferrite. .

屋根用制振塗料組成物には、難燃剤、着色剤、酸化防止剤、帯電防止剤、安定剤、発泡剤、滑剤、分散剤、ゲル化剤、造膜助剤、凍結防止剤等を必要に応じて含有させることができる。   Anti-vibration coating compositions for roofs require flame retardants, colorants, antioxidants, antistatic agents, stabilizers, foaming agents, lubricants, dispersants, gelling agents, film-forming aids, antifreeze agents, etc. It can be contained according to.

屋根用制振塗料組成物は、水系樹脂分散液、炭酸カルシウム及び硫酸バリウムを公知の混合手段を用いて混合することによって調製することができる。そして屋根用制振塗料組成物が屋根材の所定箇所に塗布された後に乾燥されることにより、屋根材には塗膜が形成される。塗布する方法としては、ロールコータ、スプレーガン等の周知の塗布装置を用いることができる。塗料の乾燥方法としては、例えば熱風乾燥、赤外線乾燥等が挙げられる。こうした塗布に際して、屋根用制振塗料組成物には、炭酸カルシウム及び硫酸バリウムが上述した含有量で含有されているため、塗布ムラやかすれといった不具合が生じ難い。すなわち、良好な塗布性が発揮される。また、塗膜の乾燥に際しては、ワキの発生が抑制される。   The vibration-damping coating composition for roof can be prepared by mixing an aqueous resin dispersion, calcium carbonate, and barium sulfate using a known mixing means. And a coating film is formed in a roofing material by drying, after applying the damping paint composition for roofs to the predetermined part of a roofing material. As a coating method, a known coating device such as a roll coater or a spray gun can be used. Examples of the method for drying the paint include hot air drying and infrared drying. In such application, since the vibration-damping coating composition for roof contains calcium carbonate and barium sulfate in the above-described amounts, problems such as uneven application and fading are unlikely to occur. That is, good applicability is exhibited. Moreover, when the coating film is dried, the occurrence of cracks is suppressed.

次に、前記屋根用制振塗料組成物を塗布した屋根構造について説明する。
図1に示されるように屋根構造は、金属製の屋根材11に塗膜12が積層された構成を有している。屋根材11を構成する金属としては、例えばスチール、ステンレス鋼、アルミニウム合金、亜鉛合金、銅、チタニウム等が挙げられる。屋根材11には、各種金属からなるめっきが施されていてもよい。上記屋根構造を有する金属屋根は、例えば折板、瓦棒葺、立平葺、平葺、横葺、金属瓦葺等の工法により形成される。塗膜12は、屋根材11において雨に曝される面を表面としたときに、屋根材11の裏面に積層されている。
Next, the roof structure to which the vibration-damping coating composition for roof is applied will be described.
As shown in FIG. 1, the roof structure has a configuration in which a coating film 12 is laminated on a metal roof material 11. As a metal which comprises the roofing material 11, steel, stainless steel, an aluminum alloy, a zinc alloy, copper, titanium etc. are mentioned, for example. The roof material 11 may be plated with various metals. The metal roof having the above-described roof structure is formed by a method such as a folded plate, a tile rod, a vertical flat, a flat plane, a horizontal plane, or a metal tile. The coating film 12 is laminated on the back surface of the roofing material 11 when the surface of the roofing material 11 exposed to rain is the front surface.

上述した屋根構造を有する建造物としては、特に限定されず、例えば倉庫、工場、駐車場、駐輪場、体育館、アーケード、寺院、神社、一般家屋等が挙げられる。金属製の屋根材11は、例えば粘土製の瓦といった屋根材に比して屋根の軽量化が図れるといった点で有利である。また、金属製の屋根材11により発生する雨音は、屋根材11の下方(例えば建造物の内部)で騒音となり得る以外に、建造物の近隣であっても騒音となり得る。すなわち、降雨に際して屋根材11に雨滴が衝突することで屋根材11が振動するため、屋根材11の周囲においても騒音となり得る。このため、例えば住宅が密集している区域、駐車場と住宅が密集している区域等において、金属屋根を有する建造物の近隣での騒音を抑制する点で上記屋根構造は有利である。   The building having the above-described roof structure is not particularly limited, and examples include a warehouse, a factory, a parking lot, a bicycle parking lot, a gymnasium, an arcade, a temple, a shrine, and a general house. The metal roofing material 11 is advantageous in that the weight of the roof can be reduced as compared with a roofing material such as clay tile. Moreover, the rain sound generated by the metal roofing material 11 can become noise in the vicinity of the building in addition to noise in the lower part of the roofing material 11 (for example, inside the building). That is, since the roof material 11 vibrates when raindrops collide with the roof material 11 during rainfall, noise can be generated around the roof material 11. For this reason, the roof structure is advantageous in that noise is suppressed in the vicinity of a building having a metal roof, for example, in an area where houses are densely packed, an area where parking lots and houses are densely packed, or the like.

ここで、本実施形態の塗膜12には、上述した所定量の充填剤が分散されているため、雨音低減効果が発揮され易い。しかも、この塗膜12では屋根材11との密着性が高められているため、雨音低減効果が継続して発揮され易い。   Here, since the predetermined amount of filler described above is dispersed in the coating film 12 of this embodiment, the rain noise reduction effect is easily exhibited. And since the adhesiveness with the roofing material 11 is improved in this coating film 12, the rain sound reduction effect is easy to be exhibited continuously.

なお、塗膜の厚さは、好ましくは10μm〜900μm、より好ましくは10μm〜500μmである。塗膜の厚さを10μm以上とすることで、優れた制振性能が発揮され易くなるため、優れた雨音低減効果が得られ易くなる。一方、塗膜の厚さが900μmを超える場合、適用物の軽量化の妨げとなるおそれがある。   In addition, the thickness of a coating film becomes like this. Preferably they are 10 micrometers-900 micrometers, More preferably, they are 10 micrometers-500 micrometers. By making the thickness of the coating film 10 μm or more, excellent vibration damping performance is easily exhibited, so that an excellent rain noise reduction effect is easily obtained. On the other hand, when the thickness of a coating film exceeds 900 micrometers, there exists a possibility of becoming the hindrance of the weight reduction of an applied material.

本実施形態によって発揮される効果について、以下に記載する。
(1)屋根用制振塗料組成物における上記充填剤の含有量は、樹脂粒子100質量部に対して160〜330質量部であるため、雨音低減効果を高めるとともに、金属製の屋根材に対する組成物の塗布性及び金属製の屋根材に対する塗膜の密着性が確保され易くなる。また、充填剤の含有量は、水分100質量部に対して120〜230質量部であるため、ワキの発生が抑制されるとともに、上記の塗布性が確保され易くなる。しかも、炭酸カルシウムの含有量は、硫酸バリウム100質量部に対して100〜450質量部であるため、雨音低減効果がさらに高められることになる。このように、組成物中に含まれる樹脂粒子及び水分に対して所定量の充填剤を含有させることで、雨音低減効果及びワキの発生の抑制効果を高めるとともに、塗布性及び密着性を改善することが容易となる。
The effects exhibited by this embodiment will be described below.
(1) Since the content of the filler in the vibration-damping coating composition for roof is 160 to 330 parts by mass with respect to 100 parts by mass of the resin particles, the rain noise reduction effect is enhanced and the metal roofing material is added. It becomes easy to ensure the applicability of the composition and the adhesion of the coating film to the metal roofing material. Moreover, since content of a filler is 120-230 mass parts with respect to 100 mass parts of water | moisture contents, generation | occurrence | production of a bran is suppressed and said applicability | paintability becomes easy to be ensured. And since content of calcium carbonate is 100-450 mass parts with respect to 100 mass parts of barium sulfate, the rain sound reduction effect is further improved. In this way, by adding a predetermined amount of filler to the resin particles and water contained in the composition, the rain noise reduction effect and the suppression effect of the occurrence of oysters are enhanced, and the coatability and adhesion are improved. Easy to do.

(2)樹脂粒子としてアクリル系樹脂粒子を含むことで、制振性能が発揮される温度領域を常温付近に調整することが容易であるため、常温付近において優れた雨音低減効果を発揮させることができる。従って、降雨の環境において、雨音低減効果が十分に発揮され易い屋根用制振塗料組成物を提供することができる。   (2) By including acrylic resin particles as the resin particles, it is easy to adjust the temperature range where the vibration damping performance is exhibited to near room temperature, so that the rain noise reduction effect can be exhibited near room temperature. Can do. Therefore, it is possible to provide a vibration-damping coating composition for roofs that can easily exhibit a rain noise reduction effect in a rainy environment.

(3)本実施形態の屋根用制振塗料組成物から形成された塗膜12が金属製の屋根材11に積層されてなる屋根構造によれば、密着性が改善されることで雨音低減効果が継続して発揮され易くなる。また、こうした屋根構造では、塗膜12の剥離が抑制されるため、塗膜12の耐久性に優れるという利点がある。   (3) According to the roof structure in which the coating film 12 formed from the vibration-damping coating composition for roof according to the present embodiment is laminated on the metal roofing material 11, rain noise is reduced by improving the adhesion. The effect is easily exhibited continuously. Moreover, in such a roof structure, since peeling of the coating film 12 is suppressed, there is an advantage that the durability of the coating film 12 is excellent.

なお、前記実施形態を次のように変更して構成してもよい。
・屋根材11に積層されている塗膜12の面にアルミニウム箔等の金属箔を貼り合わせてもよい。この場合、金属箔を拘束層とした拘束型の制振構造を構成することができる。
The embodiment may be modified as follows.
A metal foil such as an aluminum foil may be bonded to the surface of the coating film 12 laminated on the roof material 11. In this case, a constrained vibration damping structure using a metal foil as a constraining layer can be configured.

・屋根用制振塗料組成物は、屋根材11の全面に塗布してもよいし、屋根材11の面に対して部分的に塗布してもよい。   The vibration damping coating composition for roof may be applied to the entire surface of the roof material 11 or may be partially applied to the surface of the roof material 11.

次に、実施例及び比較例を挙げて前記実施形態をさらに具体的に説明する。
(実施例1〜3)
アクリル系エマルション(大日本インキ化学工業株式会社製、BC−280)に炭酸カルシウム、硫酸バリウム、水及びその他の成分を配合し、撹拌機によって混合することにより屋根用制振塗料組成物を調製した。アクリル系エマルション100質量部には、樹脂粒子が50質量部含まれている。その樹脂粒子は、メタクリル酸メチルとアクリル酸ブチルとの共重合体であり、同共重合体におけるメタクリル酸メチルとアクリル酸ブチルとの質量比は55:45である。炭酸カルシウムは、重質炭酸カルシウムであり、その平均粒径は2.2μmである。硫酸バリウムは、沈降性硫酸バリウムであり、その平均粒径は5μmである。なお、屋根用制振塗料組成物には、その他の成分として分散剤等が組成物全量に対して約4質量%程度含まれている。
Next, the embodiment will be described more specifically with reference to examples and comparative examples.
(Examples 1-3)
A vibration-damping coating composition for roof was prepared by blending calcium carbonate, barium sulfate, water and other components into an acrylic emulsion (Dainippon Ink & Chemicals, BC-280) and mixing with an agitator. . 100 parts by mass of the acrylic emulsion contains 50 parts by mass of resin particles. The resin particles are a copolymer of methyl methacrylate and butyl acrylate, and the mass ratio of methyl methacrylate to butyl acrylate in the copolymer is 55:45. Calcium carbonate is heavy calcium carbonate, and its average particle size is 2.2 μm. Barium sulfate is precipitated barium sulfate and has an average particle size of 5 μm. In addition, about 4 mass% of dispersing agents etc. are contained in the vibration damping coating composition for roofs with respect to the composition whole quantity as other components.

(比較例1〜4)
各比較例においては、表2に示されるように各成分の含有量を変更した以外は、各実施例と同様にして屋根用制振塗料組成物を調製した。
(Comparative Examples 1-4)
In each comparative example, a roof vibration-damping coating composition was prepared in the same manner as in each example except that the content of each component was changed as shown in Table 2.

Figure 2010235886
Figure 2010235886

Figure 2010235886
<塗布性の評価>
各例の屋根用制振塗料組成物を粘度カップNo.2にて測定し、40〜100秒になるように水で希釈した希釈組成物を調製した。希釈組成物をウレタンローラーの全面に塗り付けた後、そのウレタンローラーをSPCC鋼板上で5回往復させることでSPCC鋼板に希釈組成物を塗布した。塗布した直後の塗膜を目視で観察し、表3に示される判定基準で評価した。その結果を表及び表2に併記している。
Figure 2010235886
<Evaluation of applicability>
The anti-vibration coating composition for roofs of each example was used as a viscosity cup No. The diluted composition diluted with water was measured so that it might become 40 to 100 seconds as measured by 2. After the diluted composition was applied to the entire surface of the urethane roller, the diluted composition was applied to the SPCC steel sheet by reciprocating the urethane roller five times on the SPCC steel sheet. The coated film immediately after coating was visually observed and evaluated according to the criteria shown in Table 3. The results are shown in Table and Table 2.

<ワキの抑制効果の確認及び密着性の評価>
各例の屋根用制振塗料組成物を厚さ5mmのSPCC鋼板にバーコータで塗布した後、そのSPCC鋼板を加熱炉内に入れて制振塗料組成物を加熱乾燥することで塗膜を形成した。この加熱乾燥では、SPCC鋼板の表面温度が220℃となるように加熱炉内の温度を設定し、その温度で40秒間処理した。なお、各例の屋根用制振塗料組成物の塗布量は、塗膜の厚さが約70μmとなるように調整している。次に、塗膜の表面状態について観察し、表3に示されるようにワキの有無を確認した。続いて、密着性の評価を行った。各例の塗膜を十分に冷却した後、塗膜面にセロハンテープを貼着し、そのセロハンテープを一気に剥がした。このときの塗膜の剥離状態を確認し、表3に示される判定基準で密着性について評価した。その結果を表1及び表2に併記している。
<Confirmation of armpit suppression effect and adhesion evaluation>
After coating the anti-vibration coating composition for roof in each example on a 5 mm thick SPCC steel plate with a bar coater, the SPCC steel plate was placed in a heating furnace and the anti-vibration coating composition was heated and dried to form a coating film. . In this heat drying, the temperature in the heating furnace was set so that the surface temperature of the SPCC steel sheet was 220 ° C., and the treatment was performed at that temperature for 40 seconds. In addition, the application amount of the anti-vibration coating composition for roof in each example is adjusted so that the thickness of the coating film is about 70 μm. Next, the surface state of the coating was observed, and as shown in Table 3, the presence or absence of the armpit was confirmed. Subsequently, adhesion was evaluated. After fully cooling the coating film of each example, the cellophane tape was stuck on the coating-film surface, and the cellophane tape was peeled off at a stretch. The peeling state of the coating film at this time was confirmed, and adhesiveness was evaluated according to the criteria shown in Table 3. The results are also shown in Tables 1 and 2.

<雨音低減効果の確認>
各例の屋根用制振塗料組成物をSPCC鋼板の片面にスプレーガンを用いて塗布した後に、室温で30分間乾燥することで各例の試験体を作製した。なお、各例の屋根用制振塗料組成物の塗布量は乾燥後の厚みが一定となるように調整した。各試験片について、図2に示される雨音試験装置を用いて、室外音及び室内音を同時に測定した。雨音試験装置は、箱状の装置本体21と、同装置本体21の上方に設けられる降雨部22と、装置本体21の外部に設けられる室外音用マイク23と、装置本体の内部に設けられる室内音用マイク24とを備えている。装置本体21の上部には、SPCC鋼板の面を降雨部22に対向させるようにして試験体31が配置される。各マイク23,24は、騒音計に接続されている。測定条件は、暗騒音39.3dBであり、雨量を一定として降雨部22からSPCC鋼板の面に降雨させる。室外音及び室内音の測定は、5回繰り返し、それら測定値の平均値を算出した。測定した室外音及び室内音から、表3に示される判定基準で評価した。その結果を表1及び表2に併記している。
<Confirmation of rain noise reduction effect>
After applying the anti-vibration coating composition for roofs of each example to one side of the SPCC steel plate using a spray gun, the specimens of each example were prepared by drying at room temperature for 30 minutes. In addition, the coating amount of the anti-vibration coating composition for roof in each example was adjusted so that the thickness after drying was constant. About each test piece, the outdoor sound and the indoor sound were measured simultaneously using the rain sound test apparatus shown in FIG. The rain sound test apparatus is provided inside a box-shaped apparatus main body 21, a rain part 22 provided above the apparatus main body 21, an outdoor sound microphone 23 provided outside the apparatus main body 21, and the apparatus main body. And an indoor sound microphone 24. A test body 31 is arranged on the upper part of the apparatus main body 21 so that the surface of the SPCC steel plate faces the rain part 22. Each microphone 23, 24 is connected to a sound level meter. The measurement condition is background noise of 39.3 dB, and rainfall is made constant from the rainfall section 22 to the surface of the SPCC steel sheet. The measurement of the outdoor sound and the indoor sound was repeated five times, and the average value of the measured values was calculated. Based on the measured outdoor sound and room sound, the evaluation criteria shown in Table 3 were used for evaluation. The results are also shown in Tables 1 and 2.

Figure 2010235886
表1に示されるように、各実施例では、雨音低減効果、塗布性、密着性及びワキの抑制効果のいずれも良好な結果が得られている。これに対して、表2に示されるように、比較例1及び2では、炭酸カルシウム及び硫酸バリウムの一方が含有されていないため、雨音低減効果等が各実施例よりも劣る結果となっている。また、比較例3及び4では、樹脂粒子及び水分に対する充填剤の含有量、並びに、炭酸カルシウムの含有量に対する硫酸バリウムの含有量が上述した範囲に含まれないため、塗布性及び密着性の少なくとも一方の結果について、各実施例よりも劣る結果となっている。
Figure 2010235886
As shown in Table 1, in each of the examples, good results were obtained in all of the rain noise reduction effect, coating property, adhesion, and armpit suppression effect. On the other hand, as shown in Table 2, in Comparative Examples 1 and 2, since either one of calcium carbonate and barium sulfate is not contained, the rain noise reduction effect and the like are inferior to each example. Yes. Further, in Comparative Examples 3 and 4, since the content of the filler with respect to the resin particles and moisture, and the content of barium sulfate with respect to the content of calcium carbonate are not included in the above-described range, at least coating properties and adhesiveness About one result, it is a result inferior to each Example.

11…屋根材、12…塗膜。   11 ... Roofing material, 12 ... Paint film.

Claims (3)

塗膜を形成する樹脂粒子が水系分散媒に分散した水系樹脂分散液と、炭酸カルシウム及び硫酸バリウムからなる充填剤とを含有してなり、金属製の屋根材に塗布される屋根用制振塗料組成物であって、
前記充填剤の含有量は、前記樹脂粒子100質量部に対して160〜330質量部であるとともに、水分100質量部に対して120〜230質量部であり、
前記炭酸カルシウムの含有量は、前記硫酸バリウム100質量部に対して100〜450質量部であることを特徴とする屋根用制振塗料組成物。
A vibration-damping paint for roofs, which contains an aqueous resin dispersion in which resin particles forming a coating film are dispersed in an aqueous dispersion medium, and a filler made of calcium carbonate and barium sulfate, and is applied to a metal roofing material. A composition comprising:
The content of the filler is 160 to 330 parts by mass with respect to 100 parts by mass of the resin particles and 120 to 230 parts by mass with respect to 100 parts by mass of water.
Content of the said calcium carbonate is 100-450 mass parts with respect to 100 mass parts of said barium sulfates, The damping paint composition for roofs characterized by the above-mentioned.
前記樹脂粒子としてアクリル系樹脂粒子を含むことを特徴とする請求項1に記載の屋根用制振塗料組成物。 The anti-vibration coating composition for roof according to claim 1, wherein acrylic resin particles are included as the resin particles. 請求項1又は請求項2に記載の屋根用制振塗料組成物から形成された塗膜が金属製の屋根材に積層されてなることを特徴とする屋根構造。 A roof structure, wherein a coating film formed from the vibration-damping coating composition for roof according to claim 1 or 2 is laminated on a metal roof material.
JP2009087954A 2009-03-31 2009-03-31 Vibration damping coating composition for roof and roof structure Pending JP2010235886A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09151335A (en) * 1995-09-28 1997-06-10 Cosmo Sogo Kenkyusho:Kk Water-based vibration-damping coating material
JPH1120572A (en) * 1997-07-01 1999-01-26 Nippon Tokushu Toryo Co Ltd Soundproof material for vehicle room of automobile
JP2001342436A (en) * 2000-06-02 2001-12-14 Nippon Yushi Basf Coatings Kk Coating material composition
JP2003238897A (en) * 2002-02-14 2003-08-27 Nippon Tokushu Toryo Co Ltd Heat and sound insulating paint and process
JP2008291077A (en) * 2007-05-23 2008-12-04 Aisin Chem Co Ltd Emulsion based coating type vibration-proof coating

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09151335A (en) * 1995-09-28 1997-06-10 Cosmo Sogo Kenkyusho:Kk Water-based vibration-damping coating material
JPH1120572A (en) * 1997-07-01 1999-01-26 Nippon Tokushu Toryo Co Ltd Soundproof material for vehicle room of automobile
JP2001342436A (en) * 2000-06-02 2001-12-14 Nippon Yushi Basf Coatings Kk Coating material composition
JP2003238897A (en) * 2002-02-14 2003-08-27 Nippon Tokushu Toryo Co Ltd Heat and sound insulating paint and process
JP2008291077A (en) * 2007-05-23 2008-12-04 Aisin Chem Co Ltd Emulsion based coating type vibration-proof coating

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