HYDROPHILIC PAINT FOR ALUMINUM FIN MATERIAL, HYDROPHILIC COATING, ALUMINUM FIN MATERIAL IMPROVED IN HYDROPHILICITY, AND HEAT EXCHANGER
To provide a hydrophilic paint, a hydrophilic coating, an aluminum fin material with the hydrophilic coating, and a heat exchanger.SOLUTION: A hydrophilic paint is a hydrophilic paint for aluminum fin material containing: one or two or more particles (A) of calcium carbonate particles, magnesium hyd...
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Zusammenfassung: | To provide a hydrophilic paint, a hydrophilic coating, an aluminum fin material with the hydrophilic coating, and a heat exchanger.SOLUTION: A hydrophilic paint is a hydrophilic paint for aluminum fin material containing: one or two or more particles (A) of calcium carbonate particles, magnesium hydroxide particles and magnesium carbonate particles; silicate (B); a water soluble resin or salt thereof (C); and water. The water soluble resin is a polymer or copolymer which has a structure of -[C-C(COOH)]- and of which the acid value is 700 mgKOH/g or more. The total quantity of the quantity of the calcium carbonate particles (A) and the quantity of the silicate (B) converted into SiO2 is contained in 0.3 to 20 mass%. The mass ratio of the quantity of calcium carbonate particles (A): the quantity of silicate (B) converted into SiO2 ranges from 10:90 to 90:10. The silicate (B) is at least one kind selected from among M2O nSiO2 (M is alkali metal, n=1.5 to 8.0).SELECTED DRAWING: Figure 1
【課題】本発明は、親水性塗料、親水性塗膜、該親水性塗膜を備えたアルミニウムフィン材、熱交換器の提供を目的とする。【解決手段】本発明の親水性塗料は、炭酸カルシウム粒子、水酸化マグネシウム粒子、炭酸マグネシウム粒子のうち1種または2種以上の粒子(A)と、珪酸塩(B)と、水溶性樹脂又はその塩(C)と、水とを含有するアルミニウムフィン材用親水性塗料であって、前記水溶性樹脂は、-[C-C(COOH)]-の構造を有し、酸価が700mgKOH/g以上である単重合体又は共重合体であり、炭酸カルシウム粒子(A)量と前記珪酸塩(B)のSiO2換算量の合計量で0.3~20質量%含有し、炭酸カルシウム粒子(A)量:珪酸塩(B)のSiO2換算量の質量比率が10:90~90:10の範囲であり、前記珪酸塩(B)はM2O・nSiO2(Mはアルカリ金属、n=1.5~8.0)から選ばれる少なくとも1種であることを特徴とする。【選択図】図1 |
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