JP2015081303A - Thermal insulation coating - Google Patents
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- JP2015081303A JP2015081303A JP2013220167A JP2013220167A JP2015081303A JP 2015081303 A JP2015081303 A JP 2015081303A JP 2013220167 A JP2013220167 A JP 2013220167A JP 2013220167 A JP2013220167 A JP 2013220167A JP 2015081303 A JP2015081303 A JP 2015081303A
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Abstract
Description
本発明は、例えば衛生陶器を粉砕して得られるセルベンを含有し、屋根用塗料、スレート用塗料等として使用される遮熱性塗料に関する。 The present invention relates to a heat-shielding paint which contains selben obtained by pulverizing sanitary ware, for example, and is used as a roof paint, a slate paint or the like.
近年、地球温暖化に伴い、都市の灼熱化（ヒートアイランド現象）が起きている。このヒートアイランド現象は、太陽熱を熱源として、都市の地表面を形成する屋根、ビルの屋上、ビルの壁面、道路、駐車場等の都市外皮を介して都市内部への熱の蓄積によってもたらされる。従って、都市内部への熱の蓄積を抑制するための塗料が検討されている。 In recent years, urban warming (heat island phenomenon) has occurred with global warming. This heat island phenomenon is caused by the accumulation of heat inside the city through the outer skin of the roof, the roof of the building, the wall of the building, the road, the parking lot, etc. that form the ground surface of the city using solar heat as a heat source. Therefore, paints for suppressing the accumulation of heat inside the city are being studied.
この種の塗料用組成物として、例えば路面標示用水性塗料組成物が特許文献１に示されている。すなわち、この路面標示用水性塗料組成物は、エマルション系の水性塗料中に無機充填剤が配合され、その無機充填剤の一部としてモース硬度５以上の硬質無機充填剤が配合されている。具体的には、エマルション系の水性塗料としてアクリル樹脂のエマルションが使用されるとともに、無機充填剤として磁器の粉砕物が用いられている。 As this type of coating composition, for example, Patent Document 1 discloses an aqueous coating composition for road marking. That is, this road marking water-based paint composition contains an inorganic filler in an emulsion-based water-based paint, and a hard inorganic filler having a Mohs hardness of 5 or more as a part of the inorganic filler. Specifically, an acrylic resin emulsion is used as an emulsion-based water-based paint, and a porcelain pulverized product is used as an inorganic filler.
しかしながら、特許文献１に記載されている従来構成の路面標示用水性塗料組成物においては、磁器の粉砕物の粒子径は１ｍｍ以下、望ましくは０．２９５ｍｍ以下であり、そのような磁器の粉砕物は水性塗料組成物中で沈降しやすい。このため、水性塗料組成物の使用時に水性塗料組成物全体を振とうし、磁器の粉砕物を分散させて均一な状態にした後塗装作業を実施しなければならず、そのような塗装作業は煩雑であり、作業性が悪い。 However, in the water marking composition for road marking having a conventional configuration described in Patent Document 1, the particle diameter of the pulverized porcelain is 1 mm or less, preferably 0.295 mm or less. Tends to settle in aqueous coating compositions. For this reason, when the aqueous coating composition is used, the entire aqueous coating composition must be shaken to disperse the pulverized porcelain to a uniform state, and the painting operation must be performed. It is complicated and workability is poor.
加えて、特許文献１に記載の路面標示用水性塗料組成物には炭酸カルシウム、クレイ、タルク等も配合できる旨記載されているが、硬質無機充填剤と組合せて用いられる補強性の充填材として使用されているに過ぎない。従って、水性塗料組成物に配合された磁器の粉砕物は、粒子径の大きいものから次第に沈降し、分離するという事態を招く。 In addition, although it is stated that calcium carbonate, clay, talc and the like can be blended in the waterborne coating composition for road marking described in Patent Document 1, as a reinforcing filler used in combination with a hard inorganic filler It is only used. Therefore, the pulverized porcelain blended in the water-based paint composition gradually settles and separates from those having a large particle size.
そこで、本発明の目的とするところは、セルベンの沈降を有効に抑制することができるとともに、遮熱性、耐候性、耐摩耗性等の優れた塗膜物性を発揮することができる遮熱性塗料を提供することにある。 Therefore, an object of the present invention is to provide a heat-shielding coating material that can effectively suppress sedimentation of selben and that can exhibit excellent coating film properties such as heat-shielding properties, weather resistance, and abrasion resistance. It is to provide.
上記の目的を達成するために、請求項１に記載の発明の遮熱性塗料は、合成樹脂エマルション、セルベン、小径炭酸カルシウム及び大径炭酸カルシウムを含有する遮熱性塗料であって、前記セルベンは、配合されるセルベンのうち少なくとも９０質量％が粒子径０．１〜４ｍｍの範囲のセルベンであるとともに、小径炭酸カルシウムは、配合される小径炭酸カルシウムのうち少なくとも９０質量％が平均粒子径１６μｍ以上で４５μｍ以下の炭酸カルシウムであり、大径炭酸カルシウムは、配合される大径炭酸カルシウムのうち少なくとも９０質量％が平均粒子径４５μｍを超えて１８０μｍ以下の炭酸カルシウムであることを特徴とする。 In order to achieve the above object, the heat-shielding paint of the invention described in claim 1 is a heat-shielding paint containing a synthetic resin emulsion, selben, small-diameter calcium carbonate, and large-diameter calcium carbonate, At least 90% by mass of the selben to be blended is selben having a particle diameter in the range of 0.1 to 4 mm, and the small-diameter calcium carbonate has an average particle diameter of 16 μm or more. It is a calcium carbonate of 45 μm or less, and the large-diameter calcium carbonate is characterized in that at least 90% by mass of the mixed large-sized calcium carbonate is calcium carbonate having an average particle diameter exceeding 45 μm and 180 μm or less.
請求項２に記載の発明の遮熱性塗料は、請求項１に係る発明において、前記合成樹脂エマルションは、アクリル系樹脂エマルションであることを特徴とする。
請求項３に記載の発明の遮熱性塗料は、請求項２に係る発明において、前記アクリル系樹脂エマルションは、ガラス転移温度（Ｔｇ）が−１０℃〜−５０℃のものであることを特徴とする。
According to a second aspect of the present invention, in the heat-shielding coating material according to the first aspect, the synthetic resin emulsion is an acrylic resin emulsion.
According to a third aspect of the present invention, there is provided the heat-shielding paint according to the second aspect, wherein the acrylic resin emulsion has a glass transition temperature (Tg) of -10 ° C to -50 ° C. To do.
請求項４に記載の発明の遮熱性塗料は、請求項１から請求項３のいずれか一項に係る発明において、前記セルベンは、配合されるセルベンのうち少なくとも９０質量％が粒子径０．５〜１．７ｍｍの範囲のセルベンであることを特徴とする。 The thermal barrier coating material of the invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the selben is composed of at least 90% by mass of the selben blended with a particle size of 0.5. It is characterized by being a selven in the range of ˜1.7 mm.
請求項５に記載の発明の遮熱性塗料は、請求項１から請求項４のいずれか一項に係る発明において、前記セルベンの配合量は、合成樹脂エマルションの不揮発分１００質量部に対して５５０〜８５０質量部であることを特徴とする。 The thermal barrier coating material of the invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the amount of the selben is 550 with respect to 100 parts by mass of the nonvolatile content of the synthetic resin emulsion. It is -850 mass parts.
請求項６に記載の発明の遮熱性塗料は、請求項１から請求項５のいずれか一項に係る発明において、前記小径炭酸カルシウムと、大径炭酸カルシウムとの配合比率は、８：２〜２：８であることを特徴とする。 The heat-shielding coating material of the invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the blending ratio of the small-diameter calcium carbonate and the large-diameter calcium carbonate is 8: 2 to 2. It is 2: 8.
請求項７に記載の発明の遮熱性塗料は、請求項１から請求項６のいずれか一項に係る発明において、前記炭酸カルシウムの合計配合量は、合成樹脂エマルションの不揮発分１００質量部に対して２２０〜３００質量部であることを特徴とする。 The heat-shielding coating material of the invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the total amount of calcium carbonate is 100 parts by mass of the nonvolatile content of the synthetic resin emulsion. 220 to 300 parts by mass.
請求項８に記載の発明の遮熱性塗料は、請求項１から請求項７のいずれか一項に係る発明において、希釈水で希釈されて用いられ、希釈水を含む合計水量が、合成樹脂エマルションの不揮発分１００質量部に対して１０７〜１３２質量部であることを特徴とする。 The heat-shielding coating material of the invention according to claim 8 is used in the invention according to any one of claims 1 to 7, diluted with dilution water, and the total amount of water including the dilution water is a synthetic resin emulsion. It is characterized by being 107 to 132 parts by mass with respect to 100 parts by mass of the non-volatile content.
本発明の遮熱性塗料によれば、セルベンの沈降を有効に抑制することができるとともに、遮熱性、耐候性、耐摩耗性等の優れた塗膜物性を発揮することができる。 According to the heat-shielding coating material of the present invention, the sedimentation of selben can be effectively suppressed, and excellent coating film properties such as heat-shielding property, weather resistance, and abrasion resistance can be exhibited.
以下、本発明の実施形態について詳細に説明する。
本実施形態の遮熱性塗料は屋根用塗料、スレート用塗料等として使用され、合成樹脂エマルション、セルベン及び２種類の炭酸カルシウムを必須成分として含有する。前記合成樹脂エマルションは特に制限されないが、耐候性等の塗膜物性に優れる点から、アクリル系樹脂エマルションが好ましい。
Hereinafter, embodiments of the present invention will be described in detail.
The heat-shielding paint of this embodiment is used as a roof paint, a slate paint or the like, and contains a synthetic resin emulsion, selben and two types of calcium carbonate as essential components. The synthetic resin emulsion is not particularly limited, but an acrylic resin emulsion is preferable from the viewpoint of excellent coating film properties such as weather resistance.
このアクリル系樹脂エマルションとしては、アクリル系樹脂のガラス転移温度（Ｔｇ）が好ましくは−１０℃〜−５０℃、より好ましくは−２０℃〜−４５℃のものである。Ｔｇが−１０℃〜−５０℃であることにより、遮熱性塗料を被塗物に塗布して形成される塗膜が常温において良好な弾性を維持でき、硬く、脆くなることを抑制できて、優れた塗膜物性を発揮することができる。アクリル系樹脂は、（メタ）アクリル酸エステル、（メタ）アクリル酸等を主成分とし、その他の共重合性単量体を含む単量体混合物が重合又は共重合されて得られる樹脂である。その他の共重合性単量体としては、例えばスチレン等が用いられる。 As this acrylic resin emulsion, the glass transition temperature (Tg) of the acrylic resin is preferably -10 ° C to -50 ° C, more preferably -20 ° C to -45 ° C. When Tg is −10 ° C. to −50 ° C., the coating film formed by applying the heat-shielding coating material to the object to be coated can maintain good elasticity at room temperature, and can be suppressed from becoming hard and brittle. Excellent film properties can be exhibited. The acrylic resin is a resin obtained by polymerizing or copolymerizing a monomer mixture containing (meth) acrylic acid ester, (meth) acrylic acid or the like as a main component and containing other copolymerizable monomers. Examples of other copolymerizable monomers include styrene.
前記セルベンは、衛生陶器を粉砕したものであるが、碍子等を粉砕したものであってもよい。このセルベンとしては、配合されるセルベンのうち少なくとも９０質量％が粒子径０．１〜４ｍｍの範囲のセルベンが使用可能であり、少なくとも９０質量％が粒子径０．５〜１．７ｍｍの範囲のセルベンが好適に使用される。セルベンの粒子径が０．１ｍｍより小さい場合には、セルベンが遮熱性塗料中において沈降しやすくなるとともに、遮熱性塗料の塗布作業性が低下し、さらに塗膜の耐摩耗性が悪化する。その一方、セルベンの粒子径が４ｍｍより大きい場合には、遮熱性塗料による塗膜の耐摩耗性が不足するため不適当である。 The selben is obtained by pulverizing sanitary ware, but may be obtained by pulverizing insulators or the like. As this selben, at least 90% by mass of selben to be blended can be selben having a particle size of 0.1 to 4 mm, and at least 90% by mass of selben having a particle size of 0.5 to 1.7 mm. Serben is preferably used. When the particle diameter of selben is smaller than 0.1 mm, selben tends to settle in the heat-shielding paint, the workability of applying the heat-shielding paint is lowered, and the wear resistance of the coating film is further deteriorated. On the other hand, when the particle diameter of selben is larger than 4 mm, it is inappropriate because the abrasion resistance of the coating film by the heat-shielding paint is insufficient.
前記セルベンの配合量は、合成樹脂エマルションの不揮発分（固形分）１００質量部に対して好ましくは５５０〜８５０質量部、より好ましくは６１０〜７９５質量部、最も好ましくは６８０〜７５０質量部である。セルベンの配合量が合成樹脂エマルションの不揮発分１００質量部に対して５５０質量部より少ない場合には、塗膜物性として耐摩耗性が悪化する傾向を示すとともに、遮熱効果や耐候性が低下する。一方、セルベンの配合量が合成樹脂エマルションの不揮発分１００質量部に対して８５０質量部より多い場合には、セルベンの沈降性が悪化し、遮熱性塗料の作業性が低下する。 The blending amount of the selben is preferably 550 to 850 parts by mass, more preferably 610 to 795 parts by mass, and most preferably 680 to 750 parts by mass with respect to 100 parts by mass of the nonvolatile content (solid content) of the synthetic resin emulsion. . When the blending amount of selben is less than 550 parts by mass with respect to 100 parts by mass of the non-volatile content of the synthetic resin emulsion, the wear resistance tends to deteriorate as the physical properties of the coating film, and the heat shielding effect and weather resistance are reduced. . On the other hand, when the blending amount of selben is more than 850 parts by mass with respect to 100 parts by mass of the non-volatile content of the synthetic resin emulsion, the sedimentation of selben is deteriorated and the workability of the heat-shielding paint is lowered.
前記２種類の炭酸カルシウムとしては、配合される炭酸カルシウムのうち少なくとも９０質量％が平均粒子径１６μｍ以上で４５μｍ以下の炭酸カルシウム（以下、小径炭酸カルシウムともいう）と、配合される炭酸カルシウムのうち少なくとも９０質量％が平均粒子径４５μｍを超えて１８０μｍ以下の炭酸カルシウム（以下、大径炭酸カルシウムともいう）とが用いられる。小径炭酸カルシウムと大径炭酸カルシウムを組合せて使用することにより、遮熱性塗料中におけるセルベンの分散性を高め、沈降を抑制することができる。 As the two types of calcium carbonate, at least 90% by mass of calcium carbonate to be blended has an average particle diameter of 16 μm or more and 45 μm or less (hereinafter also referred to as small-diameter calcium carbonate), and among the calcium carbonate to be blended At least 90% by mass of calcium carbonate having an average particle diameter exceeding 45 μm and 180 μm or less (hereinafter also referred to as large-diameter calcium carbonate) is used. By using a combination of small-diameter calcium carbonate and large-diameter calcium carbonate, the dispersibility of selben in the heat-shielding coating can be increased and sedimentation can be suppressed.
前記小径炭酸カルシウムと、大径炭酸カルシウムとの配合比率は、好ましくは８：２〜２：８、より好ましくは７：３〜３：７、最も好ましくは６：４〜４：６である。この配合比率が質量比で８：２を上回る場合（小径炭酸カルシウムが過剰の場合）には、セルベン等の沈降性が大きく、作業性が悪くなるとともに、塗膜物性として耐候性、耐摩耗性等の性能が低下する傾向を示す。その一方、配合比率が質量比で２：８を下回る場合（小径炭酸カルシウムが過少の場合）にも、セルベン等の沈降性が低下する傾向を示すと同時に、作業性も低下し、塗膜物性として耐候性が低下する。 The blending ratio of the small-diameter calcium carbonate and the large-diameter calcium carbonate is preferably 8: 2 to 2: 8, more preferably 7: 3 to 3: 7, and most preferably 6: 4 to 4: 6. When this mixing ratio exceeds 8: 2 by mass ratio (when the small-diameter calcium carbonate is excessive), sedimentation properties such as selben are large, workability is deteriorated, and weather resistance and abrasion resistance are properties of the coating film. Etc. show a tendency to decrease in performance. On the other hand, when the blending ratio is less than 2: 8 by mass ratio (when the small-diameter calcium carbonate is too small), the settling properties of selben and the like tend to decrease, and at the same time, workability also decreases, and the coating film properties As a result, the weather resistance decreases.
前記小径炭酸カルシウムと、大径炭酸カルシウムとの合計配合量は、合成樹脂エマルションの不揮発分１００質量部に対して好ましくは２２０〜３００質量部、より好ましくは２３０〜２９０質量部、最も好ましくは２４５〜２７５質量部である。 The total amount of the small-diameter calcium carbonate and the large-diameter calcium carbonate is preferably 220 to 300 parts by mass, more preferably 230 to 290 parts by mass, and most preferably 245 with respect to 100 parts by mass of the nonvolatile content of the synthetic resin emulsion. -275 parts by mass.
前記両炭酸カルシウムの合計配合量が合成樹脂エマルションの不揮発分１００質量部に対して２２０質量部未満の場合、塗膜物性のうち耐候性や耐摩耗性が低下するとともに、遮熱性塗料中のセルベンが沈降しやすくなり、作業性も悪化する傾向を示す。一方、両炭酸カルシウムの合計配合量が合成樹脂エマルションの不揮発分１００質量部に対して３００質量部を超える場合、塗膜物性のうち耐摩耗性が低下すると同時に、遮熱性塗料中のセルベンが沈降しやすく、作業性が低下する。 When the total blending amount of both calcium carbonates is less than 220 parts by mass with respect to 100 parts by mass of the non-volatile content of the synthetic resin emulsion, the weather resistance and wear resistance of the coating film properties are lowered, and Tends to settle and the workability tends to deteriorate. On the other hand, when the total blending amount of both calcium carbonates exceeds 300 parts by mass with respect to 100 parts by mass of the non-volatile content of the synthetic resin emulsion, the abrasion resistance of the coating film properties decreases and at the same time, selben in the heat-shielding paint settles. It is easy to do and workability decreases.
遮熱性塗料は、そのままでもよいが、一般的には希釈水で希釈され、適切な粘度に調整して用いられる。遮熱性塗料中には、この希釈水のほか、合成樹脂エマルション中の水やその他の成分中の水が含まれている。従って、希釈水を含む合計水量は、合成樹脂エマルションの不揮発分１００質量部に対して好ましくは１０７〜１３２質量部、より好ましくは１１１〜１２８質量部、最も好ましくは１１５〜１２４質量部である。 The heat-shielding coating material may be used as it is, but is generally diluted with dilution water and adjusted to an appropriate viscosity. The heat-shielding paint contains water in the synthetic resin emulsion and other components in addition to the dilution water. Therefore, the total amount of water including dilution water is preferably 107 to 132 parts by mass, more preferably 111 to 128 parts by mass, and most preferably 115 to 124 parts by mass with respect to 100 parts by mass of the nonvolatile content of the synthetic resin emulsion.
この合計水量が１０７質量部より少ない場合には、遮熱性塗料の粘度が上昇し、作業性が低下して好ましくない。その一方、合計水量が１３２質量部より多い場合には、遮熱性塗料中のセルベン等の沈降性が悪くなるとともに、遮熱性塗料の粘度が低下して作業性が悪くなる傾向を示す。 When the total amount of water is less than 107 parts by mass, the viscosity of the heat-shielding paint is increased, and workability is lowered, which is not preferable. On the other hand, when the total amount of water is more than 132 parts by mass, the settling property of selben or the like in the heat-shielding paint is deteriorated, and the viscosity of the heat-shielding paint is lowered and the workability tends to be deteriorated.
本実施形態の遮熱性塗料は、合成樹脂エマルションにセルベン及び２種類の炭酸カルシウムが必須成分として配合され、さらに必要に応じて分散剤、消泡剤、増膜助剤、粘性調整剤、ｐＨ調整剤、防腐剤等の添加成分が配合され、撹拌されて調製される。 In the heat-shielding coating material of this embodiment, cerbene and two kinds of calcium carbonate are blended as essential components in a synthetic resin emulsion, and further, a dispersant, an antifoaming agent, a film increasing aid, a viscosity adjusting agent, and a pH adjusting agent as necessary. Additives such as preservatives and preservatives are blended and prepared by stirring.
この遮熱性塗料は、取扱性や製造の容易性等の観点から、その粘度が好ましくは４００〜６００ｄＰａ・ｓ、より好ましくは４５０〜５５０ｄＰａ・ｓに設定される。遮熱性塗料の粘度が４００ｄＰａ・ｓより低いとき又は６００ｄＰａ・ｓより高いときには、遮熱性塗料の製造が難しくなったり、取扱いが面倒になったりして好ましくない。 The viscosity of the heat-shielding paint is preferably set to 400 to 600 dPa · s, more preferably 450 to 550 dPa · s, from the viewpoints of handleability and ease of manufacture. When the viscosity of the heat-shielding paint is lower than 400 dPa · s or higher than 600 dPa · s, it is not preferable because the production of the heat-shielding paint becomes difficult or the handling becomes troublesome.
遮熱性塗料は、塗工の作業性を良くするため希釈水で希釈され、所望の粘度に調整して使用される。希釈水による遮熱性塗料の希釈後の粘度は、好ましくは２００〜４００ｄＰａ・ｓ、より好ましくは２５０〜３５０ｄＰａ・ｓである。水希釈後の粘度が２００ｄＰａ・ｓより低い場合には、遮熱性塗料の塗工時に遮熱性塗料の垂れが生じたり、得られる塗膜の膜厚が薄くなったりして好ましくない。その一方、水希釈後の粘度が４００ｄＰａ・ｓより高い場合には、遮熱性塗料の塗工作業性が悪くなったり、塗膜の膜厚にむらが生じたりして好ましくない。 In order to improve the workability of coating, the heat-shielding paint is diluted with dilution water and adjusted to a desired viscosity before use. The viscosity of the heat-shielding paint after dilution with dilution water is preferably 200 to 400 dPa · s, more preferably 250 to 350 dPa · s. When the viscosity after dilution with water is lower than 200 dPa · s, it is not preferable because the heat-shielding paint sag during coating of the heat-shielding paint or the film thickness of the resulting coating film becomes thin. On the other hand, when the viscosity after dilution with water is higher than 400 dPa · s, the coating workability of the heat-shielding coating is deteriorated, and the film thickness of the coating is uneven.
以上の遮熱性塗料は、屋根用塗料、スレート用塗料等として使用され、建物の屋根、壁等の被塗物に対し常法に従って塗工され、被塗物表面に塗膜が形成される。被塗物に対する遮熱性塗料の塗布量は、不揮発分換算で通常１．５〜２．５ｋｇ／ｍ２である。また、塗膜の膜厚は、１〜３ｍｍ程度である。 The above heat-shielding paints are used as roof paints, slate paints, and the like, and are applied to an object to be coated such as a roof or a wall of a building according to a conventional method to form a coating film on the surface of the object to be coated. The amount of the heat-shielding paint applied to the object is usually 1.5 to 2.5 kg / m 2 in terms of nonvolatile content. Moreover, the film thickness of a coating film is about 1-3 mm.
次に、本実施形態の遮熱性塗料について作用を説明する。
遮熱性塗料は、アクリル系樹脂エマルション等の合成樹脂エマルションに、必須成分としてセルベン、小径炭酸カルシウム及び大径炭酸カルシウム、添加成分として分散剤、消泡剤等を配合して撹拌することにより得られる。このとき、遮熱性塗料には異なる粒子径を有する２種類の炭酸カルシウムが含まれていることから、それらの炭酸カルシウムの各粒子群がセルベンの粒子に相互作用を及ぼし、セルベンの粒子が浮遊しやすくなるものと考えられる。そのため、セルベンの分散性が高められ、沈降が抑えられる。
Next, an effect | action is demonstrated about the heat-shielding coating material of this embodiment.
The heat-shielding paint is obtained by mixing and stirring a synthetic resin emulsion such as an acrylic resin emulsion with selben, small-diameter calcium carbonate and large-diameter calcium carbonate as essential components, and a dispersant, an antifoaming agent, etc. as additive components. . At this time, since the heat-shielding paint contains two kinds of calcium carbonates having different particle sizes, each particle group of these calcium carbonates interacts with the selben particles, and the selben particles float. It will be easier. Therefore, the dispersibility of selben is enhanced and sedimentation is suppressed.
そして、この遮熱性塗料を常法に従って建物の屋根やスレート製の壁に塗工することにより、屋根や壁の表面に塗膜を形成することができる。この塗膜中にはセルベンが含まれ、そのセルベンが塗膜中に均一に分散されている。従って、この塗膜は、優れた遮熱性を発現できるとともに、優れた耐候性、耐摩耗性等の特性を発現することができる。 And a coating film can be formed in the surface of a roof or a wall by coating this heat-shielding coating material on the roof of a building, or the wall made from a slate according to a conventional method. This coating film contains selben, and the selben is uniformly dispersed in the coating film. Therefore, the coating film can exhibit excellent heat shielding properties and can exhibit excellent properties such as weather resistance and abrasion resistance.
以上の実施形態によって発揮される効果を以下にまとめて記載する。
（１）この実施形態の遮熱性塗料は、合成樹脂エマルション、セルベン及び炭酸カルシウムを必須成分として含有し、セルベンは、少なくとも９０質量％が粒子径０．１〜４ｍｍの範囲のセルベンであり、炭酸カルシウムは、前記小径炭酸カルシウムと、大径炭酸カルシウムとを含むものである。
The effect exhibited by the above embodiment is described collectively below.
(1) The heat-shielding coating material of this embodiment contains a synthetic resin emulsion, selben and calcium carbonate as essential components, and selben is selben having a particle diameter of 0.1 to 4 mm at least 90% by mass. Calcium includes the small-diameter calcium carbonate and the large-diameter calcium carbonate.
このため、小径炭酸カルシウムと大径炭酸カルシウムとが相乗的に働いてセルベンの分散性を向上させ、沈降を抑制することができる。さらに、セルベンによって塗膜の遮熱性、耐候性、耐摩耗性等の物性を発揮することができる。 For this reason, a small diameter calcium carbonate and a large diameter calcium carbonate work synergistically, the dispersibility of selben can be improved, and sedimentation can be suppressed. Furthermore, the physical properties of the coating film such as heat insulation, weather resistance, and abrasion resistance can be exhibited by selven.
従って、実施形態の遮熱性塗料は、セルベンの沈降を有効に抑制することができるとともに、遮熱性、耐候性、耐摩耗性等の優れた塗膜物性を発揮することができる。
（２）前記合成樹脂エマルションがアクリル系樹脂エマルションであることにより、特に塗膜の耐候性を向上させることができる。
Therefore, the heat-shielding coating material of the embodiment can effectively suppress the sedimentation of selben and can exhibit excellent coating film properties such as heat-shielding property, weather resistance, and abrasion resistance.
(2) When the synthetic resin emulsion is an acrylic resin emulsion, particularly the weather resistance of the coating film can be improved.
（３）前記アクリル系樹脂エマルションは、ガラス転移温度（Ｔｇ）が−１０℃〜−５０℃のものであることにより、耐摩耗性、滑り性等の塗膜物性の向上を図ることができる。 (3) When the acrylic resin emulsion has a glass transition temperature (Tg) of −10 ° C. to −50 ° C., it is possible to improve the physical properties of the coating film such as wear resistance and slipperiness.
（４）前記セルベンは、少なくとも９０質量％が粒子径０．５〜１．７ｍｍの範囲のセルベンである。このため、遮熱性塗料中におけるセルベンの分散性を良好にできるとともに、遮熱性、耐候性、耐摩耗性等の塗膜物性を向上させることができる。 (4) The selben is selben in which at least 90% by mass has a particle diameter in the range of 0.5 to 1.7 mm. For this reason, while dispersibility of selben in a heat-shielding coating material can be made favorable, coating film physical properties, such as heat-shielding property, a weather resistance, and abrasion resistance, can be improved.
（５）前記セルベンの配合量は、合成樹脂エマルションの不揮発分１００質量部に対して５５０〜８５０質量部である。そのため、遮熱性塗料中にセルベンを十分に配合することができ、得られる塗膜による遮熱性、耐候性、耐摩耗性等の物性を良好に発揮させることができる。 (5) The compounding quantity of the said selben is 550-850 mass parts with respect to 100 mass parts of non volatile matters of a synthetic resin emulsion. Therefore, selben can be sufficiently blended in the heat-shielding paint, and physical properties such as heat-shielding properties, weather resistance, and abrasion resistance due to the obtained coating film can be exhibited well.
（６）前記小径炭酸カルシウムと、大径炭酸カルシウムとの配合比率は、８：２〜２：８に設定される。従って、両炭酸カルシウムによる作用をバランス良く発現することができ、セルベンの沈降抑制を有効に発揮することができる。 (6) The blending ratio of the small diameter calcium carbonate and the large diameter calcium carbonate is set to 8: 2 to 2: 8. Therefore, the effects of both calcium carbonates can be expressed in a well-balanced manner, and selben sedimentation inhibition can be effectively exhibited.
（７）前記炭酸カルシウムの合計配合量は、合成樹脂エマルションの不揮発分１００質量部に対して２２０〜３００質量部である。そのため、両炭酸カルシウムの働きにより、セルベンの沈降を抑制しつつ、セルベンの配合量を増大させることができる。 (7) The total compounding quantity of the said calcium carbonate is 220-300 mass parts with respect to 100 mass parts of non volatile matters of a synthetic resin emulsion. Therefore, the compounding amount of selben can be increased while suppressing the precipitation of selben by the action of both calcium carbonates.
（８）遮熱性塗料は、希釈水で希釈されて用いられ、希釈水を含む合計水量が、合成樹脂エマルションの不揮発分１００質量部に対して１０７〜１３２質量部である。このため、遮熱性塗料の粘度を適切な範囲に設定することができ、遮熱性塗料の塗工作業性や塗膜の均一性を向上させることができる。 (8) The heat-shielding paint is used after being diluted with dilution water, and the total amount of water including the dilution water is 107 to 132 parts by mass with respect to 100 parts by mass of the nonvolatile content of the synthetic resin emulsion. For this reason, the viscosity of the heat-shielding coating material can be set in an appropriate range, and the coating workability of the heat-shielding coating material and the uniformity of the coating film can be improved.
以下に、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及び比較例１〜５）
実施例１では、合成樹脂エマルション、小径炭酸カルシウム、大径炭酸カルシウム、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベン、分散剤、消泡剤、増膜助剤、粘性調整剤、ｐＨ調整剤及び防腐剤を表１に示す配合量（質量部）で配合して遮熱性塗料を調製した。合成樹脂エマルションとしては、アクリル酸エステル等から得られるアクリル樹脂エマルション（Ｔｇが−４３℃）を使用した。
Hereinafter, the embodiment will be described more specifically with reference to examples and comparative examples.
(Examples 1-3 and Comparative Examples 1-5)
In Example 1, a synthetic resin emulsion, small-diameter calcium carbonate, large-diameter calcium carbonate, selben having a particle size of at least 90% by mass of 0.5 to 1.7 mm, a dispersant, an antifoaming agent, a film increasing aid, and viscosity adjustment A heat-shielding paint was prepared by blending an agent, a pH adjuster and a preservative in the blending amounts (parts by mass) shown in Table 1. As the synthetic resin emulsion, an acrylic resin emulsion (Tg of −43 ° C.) obtained from an acrylic ester or the like was used.
実施例２では、実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンに代えて、少なくとも９０質量％の粒子径が１．７〜４ｍｍのセルベンを使用した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例３では、実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンに代えて、少なくとも９０質量％の粒子径が０．１０６〜０．５ｍｍのセルベンを使用した以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 2, in place of Serben with at least 90 mass% particle diameter of 0.5 to 1.7 mm in Example 1, at least 90 mass% with a particle diameter of 1.7 to 4 mm was used. Prepared a heat-shielding paint in the same manner as in Example 1. In Example 3, a selben having a particle size of at least 90% by mass of 0.106-0.5 mm is used instead of the selben having a particle size of at least 90% by mass of 0.5-1.7 mm in Example 1. A heat-shielding paint was prepared in the same manner as in Example 1 except that.
一方、比較例１では、実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンに代えて、少なくとも９０質量％の粒子径が４ｍｍを超えるセルベンを使用した以外は、実施例１と同様にして遮熱性塗料を調製した。比較例２では、実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンに代えて、少なくとも９０質量％の粒子径が０．１０６ｍｍ未満のセルベンを使用した以外は、実施例１と同様にして遮熱性塗料を調製した。比較例３では、実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンに代えて、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍの炭酸カルシウムを使用した以外は、実施例１と同様にして遮熱性塗料を調製した。 On the other hand, in Comparative Example 1, except that in Example 1, at least 90% by mass of the particle diameter of 0.5 to 1.7 mm was replaced with selben at least 90% by mass of the particle diameter exceeding 4 mm. A heat-shielding paint was prepared in the same manner as in Example 1. In Comparative Example 2, in Example 1, except that at least 90% by mass of the particle diameter of 0.5 to 1.7 mm was replaced with selben at least 90% by mass of the particle diameter of less than 0.106 mm. A heat-shielding paint was prepared in the same manner as in Example 1. In Comparative Example 3, calcium carbonate having a particle size of at least 90% by mass of 0.5-1.7 mm is used instead of Serven having a particle size of at least 90% by mass of 0.5-1.7 mm in Example 1. A heat-shielding paint was prepared in the same manner as in Example 1 except that it was used.
比較例４では、実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンに代えて、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのガラス粉砕物を使用した以外は、実施例１と同様にして遮熱性塗料を調製した。比較例５では、実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンに代えて、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのガラス発泡物を使用した以外は、実施例１と同様にして遮熱性塗料を調製した。 In Comparative Example 4, a glass pulverized product having a particle size of at least 90% by mass of 0.5 to 1.7 mm in place of Serbene having a particle size of at least 90% by mass of 0.5 to 1.7 mm in Example 1. A heat-shielding paint was prepared in the same manner as in Example 1 except that was used. In Comparative Example 5, a glass foam having a particle diameter of at least 90% by mass of 0.5 to 1.7 mm in place of Serbene having a particle diameter of at least 90% by mass of 0.5 to 1.7 mm in Example 1. A heat-shielding paint was prepared in the same manner as in Example 1 except that was used.
得られた遮熱性塗料について、常法に従って被塗物表面に塗膜を形成した。遮熱性塗料の塗布量は、不揮発分で２ｋｇ／ｍ２とした。そして、遮熱性塗料又は塗膜について沈降性、遮熱効果、耐候性、耐摩耗性、滑り抵抗係数及び作業性を下記に示す方法で測定し、それらの結果を表１に示した。 About the obtained heat-shielding coating material, the coating film was formed in the to-be-coated object surface according to the conventional method. The coating amount of the heat-shielding paint was 2 kg / m 2 in terms of nonvolatile content. Then, the sedimentation property, the heat shielding effect, the weather resistance, the wear resistance, the slip resistance coefficient and the workability of the heat shielding paint or coating film were measured by the methods shown below, and the results are shown in Table 1.
沈降性：遮熱性塗料の沈降状態を目視により観察した。そして、水希釈後、１時間以上沈降しない場合を◎、３０分以上沈降しない場合を○、１５分以上沈降しない場合を△、１５分以内に沈降した場合を×と判断した。 Sedimentability: The sedimentation state of the heat-shielding paint was visually observed. And after water dilution, the case where it did not settle for 1 hour or more was evaluated as ◎, the case where it did not settle for 30 minutes or more, ○, the case where it did not settle for 15 minutes or more, Δ, and the case where it settled within 15 minutes was judged as ×.
遮熱効果：遮熱性塗料の塗装部位と未塗装部位との温度差を測定した。そして、温度差が−２０〜−１５℃の場合を◎、温度差が−１５〜−１０℃の場合を○、温度差が−１０〜−５℃の場合を△、温度差が−５〜０℃の場合を×と判断した。 Thermal barrier effect: The temperature difference between the painted part and the unpainted part of the thermal barrier paint was measured. When the temperature difference is -20 to -15 ° C, ◎, when the temperature difference is -15 to -10 ° C, ◯, when the temperature difference is -10 to -5 ° C, △, and the temperature difference is -5 The case of 0 degreeC was judged as x.
耐候性：ＪＩＳＡ６９０９；２００６ ７．１９耐候性試験Ｂ法に準拠して測定した。そして、２５００ｈ以上を◎、１２００ｈ以上を○、６００ｈ以上を△、６００ｈ以下を×と判断した。 Weather resistance: Measured according to JIS A6909; 2006 7.19 Weather resistance test B method. And 2500h or more was judged as ◎, 1200h or more as ○, 600h or more as Δ, and 600h or less as x.
耐摩耗性：ＪＩＳＫ５６００−５−９；１９９９ 耐摩耗性（摩耗輪法）に準拠して測定した。そして、摩耗減量が１０〜１３ｍｇの場合を◎、１３〜１６ｍｇの場合を○、１６〜１９ｍｇの場合を△、１９ｍｇ以上を×と判断した。 Abrasion resistance: measured according to JISK5600-5-9; 1999 abrasion resistance (wear wheel method). Then, it was determined that the wear loss was 10 to 13 mg, ◎, 13 to 16 mg was ◯, 16 to 19 mg was Δ, and 19 mg or more was x.
滑り抵抗係数（Ｃ．Ｓ．Ｒ）：ＪＩＳＡ１４５４；２０１０ １７滑り性試験に準拠して測定した。そして、滑り抵抗係数が０．４以上の場合を◎、０．３〜０．４の場合を○、０．２〜０．３の場合を△、０．３以下の場合を×と判断した。 Slip resistance coefficient (C.S.R.): Measured according to JIS A 1454; 2010 17 slip test. And, when the slip resistance coefficient is 0.4 or more, it is judged as ◎, when 0.3-0.4 is judged as ◯, when 0.2-0.3 is judged as Δ, and when 0.3 or less is judged as × .
作業性：遮熱性塗料を吹付塗装したときの感覚で評価した。そして、吹付塗装がより好適にできた場合には◎、好適にできた場合には○、やや難点がある場合には△、吹付塗装が困難であった場合には×と判断した。 Workability: Evaluated based on the feeling when spraying a thermal barrier paint. Then, it was judged as ◎ when the spray coating was made more suitable, ◯ when it was made suitable, △ when there was a slight difficulty, and × when the spray coating was difficult.
また、比較例３では、粒子径の大きい炭酸カルシウムを使用したことから、遮熱効果が低下するとともに、滑り抵抗係数が悪化した。比較例４では、粒子径の大きいガラス粉砕物を用いたため、遮熱効果が低下すると同時に、滑り抵抗係数が悪化した。比較例５では、粒子径の大きいガラス発泡物を使用したため、沈降性、耐候性及び耐摩耗性が悪く、さらに作業性も悪化した。 Moreover, in the comparative example 3, since the calcium carbonate with a large particle diameter was used, while the thermal-insulation effect fell, the slip resistance coefficient deteriorated. In Comparative Example 4, since a glass pulverized product having a large particle size was used, the heat shielding effect was lowered and the slip resistance coefficient was deteriorated. In Comparative Example 5, since a glass foam having a large particle size was used, sedimentation, weather resistance, and abrasion resistance were poor, and workability was also degraded.
（実施例４〜６）
実施例４〜６では、合成樹脂エマルションの種類を変更した。すなわち、実施例４では、実施例１において、アクリル樹脂エマルション（Ｔｇが−４３℃）に代えて、アクリル樹脂エマルション（Ｔｇが−１４℃）を使用した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例５では、実施例１において、アクリル樹脂エマルション（Ｔｇが−４３℃）に代えて、アクリル樹脂エマルション（Ｔｇが＋１２℃）を使用した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例６では、実施例１において、アクリル樹脂エマルション（Ｔｇが−４３℃）に代えて、アクリル／スチレン共重合樹脂エマルション（Ｔｇが−２１℃）を使用した以外は、実施例１と同様にして遮熱性塗料を調製した。
(Examples 4 to 6)
In Examples 4-6, the kind of synthetic resin emulsion was changed. That is, in Example 4, in the same manner as in Example 1, except that the acrylic resin emulsion (Tg is −14 ° C.) is used instead of the acrylic resin emulsion (Tg is −43 ° C.), the shielding is performed. A thermal paint was prepared. In Example 5, a heat-shielding coating material was prepared in the same manner as in Example 1 except that an acrylic resin emulsion (Tg was + 12 ° C.) was used instead of the acrylic resin emulsion (Tg was −43 ° C.). Prepared. In Example 6, the same procedure as in Example 1 was used except that an acrylic / styrene copolymer resin emulsion (Tg of -21 ° C.) was used instead of the acrylic resin emulsion (Tg of −43 ° C.). A heat-shielding paint was prepared.
そして、得られた遮熱性塗料又は塗膜について、沈降性、遮熱効果、耐候性、耐摩耗性、滑り抵抗係数及び作業性を実施例１と同様にして測定し、それらの結果を表２に示した。 And about the obtained heat-shielding coating material or coating film, sedimentation property, a heat-shielding effect, a weather resistance, abrasion resistance, a slip resistance coefficient, and workability | operativity were measured like Example 1, and those results are shown in Table 2. It was shown to.
（比較例６〜１０）
比較例６では、実施例１において、小径炭酸カルシウムを用いず、大径炭酸カルシウム２５９．７質量部を用いた以外は、実施例１と同様にして遮熱性塗料を調製した。比較例７では、実施例１において、小径炭酸カルシウムを２５９．７質量部用い、大径炭酸カルシウム１４２．９質量部を用いなかった以外は、実施例１と同様にして遮熱性塗料を調製した。
(Comparative Examples 6 to 10)
In Comparative Example 6, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the small-diameter calcium carbonate was not used and 259.7 parts by mass of the large-diameter calcium carbonate was used. In Comparative Example 7, a heat-shielding paint was prepared in the same manner as in Example 1 except that 259.7 parts by mass of small-diameter calcium carbonate was used in Example 1, and 142.9 parts by mass of large-diameter calcium carbonate was not used. .
比較例８では、実施例１において、小径炭酸カルシウム及び大径炭酸カルシウムを用いず、少なくとも９０質量％の粒子径が１８０〜５００μｍの炭酸カルシウム２５９．７質量部を配合した以外は、実施例１と同様にして遮熱性塗料を調製した。比較例９では、実施例１において、小径炭酸カルシウム及び大径炭酸カルシウムを用いず、少なくとも９０質量％の粒子径が５００μｍ以上の炭酸カルシウム２５９．７質量部を配合した以外は、実施例１と同様にして遮熱性塗料を調製した。比較例１０では、実施例１において、小径炭酸カルシウム及び大径炭酸カルシウムを用いず、少なくとも９０質量％の粒子径が１６μｍ以下の炭酸カルシウム２５９．７質量部を配合した以外は、実施例１と同様にして遮熱性塗料を調製した。 In Comparative Example 8, Example 1 was used except that in Example 1, small diameter calcium carbonate and large diameter calcium carbonate were not used, and 259.7 parts by mass of calcium carbonate having a particle size of at least 90% by mass of 180 to 500 μm was blended. In the same manner, a heat-shielding paint was prepared. In Comparative Example 9, Example 1 is the same as Example 1 except that small diameter calcium carbonate and large diameter calcium carbonate are not used, and 259.7 parts by mass of calcium carbonate having a particle size of at least 90% by mass of 500 μm or more is blended. Similarly, a heat-shielding paint was prepared. Comparative Example 10 was the same as Example 1 except that in Example 1, small-sized calcium carbonate and large-sized calcium carbonate were not used, and 259.7 parts by mass of calcium carbonate having a particle size of at least 90% by mass of 16 μm or less was blended. Similarly, a heat-shielding paint was prepared.
そして、得られた遮熱性塗料又は塗膜について、沈降性、遮熱効果、耐候性、耐摩耗性、滑り抵抗係数及び作業性を実施例１と同様にして測定し、それらの結果を表３に示した。 And about the obtained heat-shielding coating material or coating film, sedimentation property, a heat-shielding effect, a weather resistance, abrasion resistance, a slip resistance coefficient, and workability | operativity were measured like Example 1, and those results were shown in Table 3. It was shown to.
（実施例７〜１３）
実施例７〜１３では、２種類の炭酸カルシウムの配合比率について検討した。すなわち、実施例７では、実施例１において、大径炭酸カルシウムと小径炭酸カルシウムとの配合比率５．５：４．５を８：２に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。
(Examples 7 to 13)
In Examples 7 to 13, the mixing ratio of two types of calcium carbonate was examined. That is, in Example 7, in Example 1, except that the blending ratio of large-diameter calcium carbonate and small-diameter calcium carbonate was changed from 5.5: 4.5 to 8: 2, the heat shielding properties were the same as in Example 1. A paint was prepared.
実施例８では、実施例１において、前記２種類の炭酸カルシウムの配合比率を７：３とした以外は、実施例１と同様にして遮熱性塗料を調製した。実施例９では、実施例１において、前記２種類の炭酸カルシウムの配合比率を６：４とした以外は、実施例１と同様にして遮熱性塗料を調製した。実施例１０では、実施例１において、前記２種類の炭酸カルシウムの配合比率を５：５とした以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 8, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the mixing ratio of the two types of calcium carbonate in Example 1 was 7: 3. In Example 9, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the mixing ratio of the two types of calcium carbonate in Example 1 was 6: 4. In Example 10, a heat-shielding paint was prepared in the same manner as in Example 1 except that the mixing ratio of the two types of calcium carbonate in Example 1 was 5: 5.
実施例１１では、実施例１において、前記２種類の炭酸カルシウムの配合比率を４：６とした以外は、実施例１と同様にして遮熱性塗料を調製した。実施例１２では、実施例１において、前記２種類の炭酸カルシウムの配合比率を３：７とした以外は、実施例１と同様にして遮熱性塗料を調製した。実施例１３では、実施例１において、前記２種類の炭酸カルシウムの配合比率を２：８とした以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 11, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the mixing ratio of the two types of calcium carbonate in Example 1 was 4: 6. In Example 12, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the mixing ratio of the two types of calcium carbonate was set to 3: 7 in Example 1. In Example 13, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the mixing ratio of the two types of calcium carbonate in Example 1 was 2: 8.
そして、得られた遮熱性塗料又は塗膜について、沈降性、遮熱効果、耐候性、耐摩耗性、滑り抵抗係数及び作業性を実施例１と同様にして測定し、それらの結果を表４に示した。 And about the obtained heat insulation coating material or coating film, sedimentation property, a heat insulation effect, a weather resistance, abrasion resistance, a slip resistance coefficient, and workability | operativity were measured like Example 1, and those results were shown in Table 4. It was shown to.
従って、大径炭酸カルシウムと小径炭酸カルシウムとの配合比率は、８：２〜２：８が好ましく、７：３〜３：７がより好ましく、６：４〜４：６が最も好ましいことが示された。 Therefore, the blending ratio of the large diameter calcium carbonate and the small diameter calcium carbonate is preferably 8: 2 to 2: 8, more preferably 7: 3 to 3: 7, and most preferably 6: 4 to 4: 6. It was done.
（実施例１４〜１９）
実施例１４〜１９では、アクリル樹脂エマルションに対する炭酸カルシウムの配合比率について検討した。すなわち、実施例１４では、実施例１において、アクリル樹脂エマルションの不揮発分１００質量部に対する炭酸カルシウム（２種類の炭酸カルシウムの合計量）の配合量２５９．７質量部を２２０．８質量部とした以外は、実施例１と同様にして遮熱性塗料を調製した。
(Examples 14 to 19)
In Examples 14 to 19, the mixing ratio of calcium carbonate to the acrylic resin emulsion was examined. That is, in Example 14, in Example 1, the amount of 259.7 parts by mass of calcium carbonate (total amount of two types of calcium carbonate) with respect to 100 parts by mass of the nonvolatile content of the acrylic resin emulsion was set to 220.8 parts by mass. Except for the above, a heat-shielding paint was prepared in the same manner as in Example 1.
実施例１５では、実施例１において、炭酸カルシウムの配合量を２３３．８質量部とした以外は、実施例１と同様にして遮熱性塗料を調製した。実施例１６では、実施例１において、炭酸カルシウムの配合量を２４６．８質量部とした以外は、実施例１と同様にして遮熱性塗料を調製した。実施例１７では、実施例１において、炭酸カルシウムの配合量を２７２．７質量部とした以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 15, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blending amount of calcium carbonate in Example 1 was 233.8 parts by mass. In Example 16, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blending amount of calcium carbonate in Example 1 was 246.8 parts by mass. In Example 17, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blending amount of calcium carbonate in Example 1 was changed to 272.7 parts by mass.
実施例１８では、実施例１において、炭酸カルシウムの配合量を２８５．７質量部とした以外は、実施例１と同様にして遮熱性塗料を調製した。実施例１９では、実施例１において、炭酸カルシウムの配合量を２９８．７質量部とした以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 18, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the amount of calcium carbonate in Example 1 was changed to 285.7 parts by mass. In Example 19, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blending amount of calcium carbonate in Example 1 was 298.7 parts by mass.
そして、得られた遮熱性塗料又は塗膜について、沈降性、遮熱効果、耐候性、耐摩耗性、滑り抵抗係数及び作業性を実施例１と同様にして測定し、それらの結果を表５に示した。 And about the obtained heat-shielding coating material or coating film, sedimentation property, a heat-shielding effect, a weather resistance, abrasion resistance, a slip resistance coefficient, and workability | operativity were measured like Example 1, and those results were shown in Table 5. It was shown to.
従って、アクリル樹脂エマルションの不揮発分１００質量部に対する炭酸カルシウムの配合量は、好ましくは２２０．８〜２９８．７質量部、より好ましくは２３３．８〜２８５．７質量部、最も好ましくは２４６．８〜２７２．７質量部であることが示された。 Accordingly, the blending amount of calcium carbonate with respect to 100 parts by mass of the nonvolatile content of the acrylic resin emulsion is preferably 220.8 to 298.7 parts by mass, more preferably 233.8 to 285.7 parts by mass, and most preferably 246.8. It was shown to be -272.7 parts by mass.
（実施例２０〜２７）
実施例２０〜２７では、セルベンの配合量について検討した。すなわち、実施例２０では、前記実施例１において、少なくとも９０質量％の粒子径が０．５〜１．７ｍｍのセルベンの配合量７１４．３質量部を、８９２．９質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。
(Examples 20 to 27)
In Examples 20 to 27, the blending amount of selben was examined. That is, in Example 20, except that the blending amount of 714.3 parts by mass of Serbene having a particle diameter of at least 90% by mass of 0.5 to 1.7 mm in Example 1 was changed to 892.9 parts by mass. A heat-shielding paint was prepared in the same manner as in Example 1.
実施例２１では、実施例１において、前記セルベンの配合量を８４８．２質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例２２では、実施例１において、前記セルベンの配合量を７９３．７質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例２３では、実施例１において、前記セルベンの配合量を７５０．０質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 21, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blend amount of the selben was changed to 848.2 parts by mass in Example 1. In Example 22, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blend amount of the selben was changed to 793.7 parts by mass in Example 1. In Example 23, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blend amount of the selben was changed to 750.0 parts by mass in Example 1.
実施例２４では、実施例１において、前記セルベンの配合量を６８４．５質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例２５では、実施例１において、前記セルベンの配合量を６１２．２質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例２６では、実施例１において、前記セルベンの配合量を５５８．０質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例２７では、実施例１において、前記セルベンの配合量を５１５．９質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 24, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the amount of the selben was changed to 684.5 parts by mass in Example 1. In Example 25, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blend amount of the selben was changed to 612.2 parts by mass in Example 1. In Example 26, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the amount of selben was changed to 558.0 parts by mass in Example 1. In Example 27, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the blend amount of the selben was changed to 515.9 parts by mass in Example 1.
そして、得られた遮熱性塗料又は塗膜について、沈降性、遮熱効果、耐候性、耐摩耗性、滑り抵抗係数及び作業性を実施例１と同様にして測定し、それらの結果を表７に示した。 And about the obtained heat insulation coating material or coating film, sedimentation property, a heat insulation effect, a weather resistance, abrasion resistance, a slip resistance coefficient, and workability | operativity were measured like Example 1, and those results were shown in Table 7. It was shown to.
さらに、実施例２０においては、セルベンの配合量がさらに増加したことから、沈降性及び作業性が低下する結果を招いた。実施例２７では、セルベンの配合量がさらに減少したため、遮熱効果、耐候性及び耐摩耗性が低下する事態を招いた。 Furthermore, in Example 20, since the blending amount of selben was further increased, the sedimentation property and workability were reduced. In Example 27, since the blending amount of selben was further reduced, the heat shielding effect, weather resistance, and wear resistance were reduced.
従って、セルベンの配合量は、アクリル樹脂エマルションの不揮発分１００質量部に対して、好ましくは約５５０〜８５０質量部、より好ましくは約６１０〜７９５質量部、最も好ましくは約６８０〜７５０質量部であることが示された。 Therefore, the blending amount of selben is preferably about 550 to 850 parts by mass, more preferably about 610 to 795 parts by mass, and most preferably about 680 to 750 parts by mass with respect to 100 parts by mass of the nonvolatile content of the acrylic resin emulsion. It was shown that there is.
（実施例２８〜３５）
実施例２８〜３５では、希釈水量を含む合計水量について検討した。すなわち、実施例２８では、実施例１において、合計水量１１９．２質量部を１１５．１質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。
(Examples 28 to 35)
In Examples 28 to 35, the total amount of water including the amount of diluted water was examined. That is, in Example 28, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total water amount 119.2 parts by mass was changed to 115.1 parts by mass in Example 1.
実施例２９では、前記実施例１において、合計水量を１１１．０質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例３０では、前記実施例１において、合計水量を１０７．０質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例３１では、前記実施例１において、合計水量を１０２．９質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 29, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total amount of water in Example 1 was changed to 111.0 parts by mass. In Example 30, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total amount of water in Example 1 was changed to 107.0 parts by mass. In Example 31, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total amount of water in Example 1 was changed to 102.9 parts by mass.
実施例３２では、前記実施例１において、合計水量を１２３．２質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例３３では、前記実施例１において、合計水量を１２７．３質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例３４では、前記実施例１において、合計水量を１３１．３質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。実施例３５では、前記実施例１において、合計水量を１３５．４質量部に変更した以外は、実施例１と同様にして遮熱性塗料を調製した。 In Example 32, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total amount of water in Example 1 was changed to 123.2 parts by mass. In Example 33, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total amount of water in Example 1 was changed to 127.3 parts by mass. In Example 34, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total amount of water in Example 1 was changed to 131.3 parts by mass. In Example 35, a heat-shielding coating material was prepared in the same manner as in Example 1 except that the total amount of water in Example 1 was changed to 135.4 parts by mass.
そして、得られた遮熱性塗料又は塗膜について、沈降性、遮熱効果、耐候性、耐摩耗性、滑り抵抗係数及び作業性を実施例１と同様にして測定し、それらの結果を表７に示した。 And about the obtained heat insulation coating material or coating film, sedimentation property, a heat insulation effect, a weather resistance, abrasion resistance, a slip resistance coefficient, and workability | operativity were measured like Example 1, and those results were shown in Table 7. It was shown to.
従って、合計水量は、好ましくは１０７〜１３２質量部、より好ましくは１１１〜１２８質量部、最も好ましくは１１５〜１２４質量部であることが示された。
なお、前記実施形態を次のように変更して具体化することも可能である。
Therefore, it was shown that the total amount of water is preferably 107 to 132 parts by mass, more preferably 111 to 128 parts by mass, and most preferably 115 to 124 parts by mass.
It should be noted that the embodiment described above can be modified and embodied as follows.
・前記セルベンの具体的な種類、粒子径、配合量等に応じて、小径炭酸カルシウムと大径炭酸カルシウムの配合比率や合計配合量を変更してもよい。
・前記セルベンとしては、衛生陶器の粉砕物に碍子等のその他の粉砕物が含まれていてもよい。
-The blending ratio and the total blending amount of the small-diameter calcium carbonate and the large-diameter calcium carbonate may be changed according to the specific type, particle diameter, blending amount, etc. of the selben.
-As said selben, the pulverized material of sanitary ware may contain other pulverized materials such as insulators.
・前記小径炭酸カルシウムと大径炭酸カルシウムの各粒子分布は、正規分布であることが望ましいが、正規分布でなくてもよい。 The particle distribution of the small-sized calcium carbonate and the large-sized calcium carbonate is preferably a normal distribution, but may not be a normal distribution.
Claims (8)
前記セルベンは、配合されるセルベンのうち少なくとも９０質量％が粒子径０．１〜４ｍｍの範囲のセルベンであるとともに、小径炭酸カルシウムは、配合される小径炭酸カルシウムのうち少なくとも９０質量％が平均粒子径１６μｍ以上で４５μｍ以下の炭酸カルシウムであり、大径炭酸カルシウムは、配合される大径炭酸カルシウムのうち少なくとも９０質量％が平均粒子径４５μｍを超えて１８０μｍ以下の炭酸カルシウムであることを特徴とする遮熱性塗料。 A heat-shielding paint containing a synthetic resin emulsion, selben, small-diameter calcium carbonate and large-diameter calcium carbonate,
The selben is selben in which at least 90% by mass of the blended selben has a particle diameter in the range of 0.1 to 4 mm. The calcium carbonate having a diameter of 16 μm or more and 45 μm or less is characterized in that at least 90% by mass of the large-sized calcium carbonate to be blended is calcium carbonate having an average particle diameter exceeding 45 μm and 180 μm or less. Heat-shielding paint.
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| JP2013220167A JP2015081303A (en) | 2013-10-23 | 2013-10-23 | Thermal insulation coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016089036A (en) * | 2014-11-05 | 2016-05-23 | 信号器材株式会社 | Coating composition for road surface sign and construction method |
| US11163132B2 (en) | 2016-04-18 | 2021-11-02 | Canon Kabushiki Kaisha | Thermal barrier film, thermal barrier paint, and optical instrument |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016089036A (en) * | 2014-11-05 | 2016-05-23 | 信号器材株式会社 | Coating composition for road surface sign and construction method |
| US11163132B2 (en) | 2016-04-18 | 2021-11-02 | Canon Kabushiki Kaisha | Thermal barrier film, thermal barrier paint, and optical instrument |
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