JP7372541B2 - 化成処理鋼板 - Google Patents
化成処理鋼板 Download PDFInfo
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- JP7372541B2 JP7372541B2 JP2020021397A JP2020021397A JP7372541B2 JP 7372541 B2 JP7372541 B2 JP 7372541B2 JP 2020021397 A JP2020021397 A JP 2020021397A JP 2020021397 A JP2020021397 A JP 2020021397A JP 7372541 B2 JP7372541 B2 JP 7372541B2
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- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
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- 150000004706 metal oxides Chemical class 0.000 description 1
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- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
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- 238000002156 mixing Methods 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
- DVYVMJLSUSGYMH-UHFFFAOYSA-N n-methyl-3-trimethoxysilylpropan-1-amine Chemical compound CNCCC[Si](OC)(OC)OC DVYVMJLSUSGYMH-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
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- 230000001151 other effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
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- 235000012239 silicon dioxide Nutrition 0.000 description 1
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- LRBQNJMCXXYXIU-YIILYMKVSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)C(OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-YIILYMKVSA-N 0.000 description 1
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- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- JLGNHOJUQFHYEZ-UHFFFAOYSA-N trimethoxy(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](OC)(OC)CCC(F)(F)F JLGNHOJUQFHYEZ-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
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Images
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- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
上記めっき鋼板は、耐食性および意匠性の観点から、アルミニウムおよび亜鉛の一方または両方を含む上記めっき層を鋼板の表面に有することが好ましく、加えてスパングル模様をより呈しやすいめっき鋼板であることが、本実施の形態における効果をより顕著に発現させる観点から好ましい。また、上記めっき層は、0.05~60質量%のアルミニウムと、0.5~4.0質量%のマグネシウムとを含む亜鉛合金で構成されていることが、上記の観点から好ましい。上記めっき鋼板の厚さは、化成処理鋼板の用途に応じて適宜に決めることができ、例えば0.2~6.0mmである。上記めっき鋼板は、例えば、平板でもよいし、波板でもよく、めっき鋼板の平面形状は、矩形でもよいし、矩形以外の形状であってもよい。
上記化成処理皮膜は、化成処理により上記めっき鋼板の表面に形成された皮膜である。
[めっき鋼板Aおよびめっき鋼板Bの作製]
冷間圧延鋼板(SPCC)に溶融Znの溶融亜鉛めっきを施してなる溶融Znめっき鋼板(めっき鋼板A)を用意した。当該溶融Znめっき鋼板は、通常、0.1質量%程度のAlを含有している。また、溶融Zn-6質量%Al-3質量%Mg合金の溶融合金めっきをSPCCに施してなる溶融6%Al-3%Mg-Znめっき鋼板(めっき鋼板B)を用意した。めっき鋼板Aおよびめっき鋼板Bの板厚は、いずれも0.7mmであり、めっき鋼板Aおよびめっき鋼板Bにおける片面のめっき付着量は、いずれも60g/m2とした。
まず、以下の材料を用意した。
JSR株式会社製の「シフクリアF101」(「シフクリア」は同社の登録商標)を用意した。シフクリアF101は、フッ素樹脂(FR)の水系エマルションであり、当該エマルションの固形分濃度は約47質量%であり、エマルションの平均粒子径は約150nmである。
アクリル樹脂粒子(GC-R1)の平均粒子径が1.4μmである粉体「架橋アクリル単分散粒子MX-150」(綜研化学株式会社製)を用意した。MX-150(製品名)は、アクリル架橋粒子(樹脂種)の粉体である。
めっき鋼板Aまたはめっき鋼板Bに処理液1~処理液15のいずれかを塗布し、到達板温140℃で加熱乾燥して、膜厚1.0μmの化成処理皮膜を形成し、化成処理鋼板1~化成処理鋼板60を得た。化成処理皮膜の膜厚は、化成処理皮膜を含む化成処理鋼板を切出し、断面をSEMによって観察して、求めた。
(1)外観
それぞれの化成処理皮膜側の表面の60°鏡面光沢度G60を、JIS Z8741で規定されている「鏡面光沢度-測定方法」に準拠し、株式会社村上色彩技術研究所製の光沢計、GMX-203を用いて測定した。また、当該表面を目視で観察し、スパングル模様の有無を確認した。これらの結果により、当該化成処理鋼板における化成処理皮膜の外観を、以下の基準により評価した。
◎:スパングル模様が認められず、かつG60が200以下である
○:スパングル模様が認められず、かつG60が200超240以下である
△:スパングル模様がやや認められる
×:スパングル模様が鮮明に認められる
それぞれの化成処理鋼板から切り出した試験片を4t曲げし、化成処理皮膜における曲げられた部分の外側表面にセロハンテープ剥離試験を行い、当該曲げられた部分の単位面積当たりの、化成処理皮膜の剥離した部分の面積の割合(皮膜剥離面積率PA(%))を求めた。この結果により、それぞれの化成処理鋼板における化成処理皮膜の密着性を、以下の基準により評価した。
◎:PAが5%以下である
〇:PAが5%超10%以下である
△:PAが10%超50%以下である
×:PAが50%超である
図1に示す方法で、表面と裏面との間の静摩擦係数を測定した。それぞれの表面処理鋼板から、幅30mm×長さ300mmの引き抜き用供試サンプル110と、幅30mm×長さ40mmの2つの押さえ用供試サンプル120aおよび押さえ用供試サンプル120bと、を切り出した。押さえ用供試サンプル120aおよび押さえ用供試サンプル120bは、それぞれ、両面テープ130aおよび両面テープ130bによって取付金型140aおよび取付金型140bに接着させた。
◎ 静摩擦係数μが0.25超である
○ 静摩擦係数μが0.20超0.25以下である
△ 静摩擦係数μが0.10超0.20以下である
× 静摩擦係数μが0.10以下である
製造性の評価における静摩擦係数の測定の後、引き抜き用供試サンプル110が50mm移動した時点で印加されていた、引き抜き用供試サンプル110を引き抜くための力を測定した。そして、上記引き抜き用供試サンプル110を引き抜くための力を、押さえ用供試サンプル120aおよび押さえ用供試サンプル120bを引き抜き用供試サンプル110側に押圧した荷重(600kgf)で除算して、動摩擦係数を求めた。得られた動摩擦係数の値に基づき、以下の基準でそれぞれの表面処理鋼板の潤滑性を評価した。
◎ 動摩擦係数μが0.10以下である
○ 動摩擦係数μが0.10超0.15以下である
△ 動摩擦係数μが0.15超0.20以下である
× 動摩擦係数μが0.20超である
120a、120b 押さえ用供試サンプル
130a、130b 両面テープ
140a、140b 取付金型
Claims (5)
- めっき鋼板と、前記めっき鋼板の表面に配置された化成処理皮膜と、を有し、
前記化成処理皮膜は、前記化成処理皮膜の膜構造を構成する有機樹脂と、ワックスと、光沢調整粒子と、を含有し、
前記光沢調整粒子の含有量は、前記化成処理皮膜の全質量に対して5.0質量%以上であり、
前記光沢調整粒子は、個数粒度分布における平均粒子径が0.3μm以上4.0μm以下のシリカ粒子またはアクリル樹脂粒子であり、
前記化成処理皮膜の膜厚tに対する前記光沢調整粒子の平均粒子径Aの比率(A/t)は、0.5以上6.0以下であり、
前記化成処理皮膜は、下記の測定条件による平板摺動試験により測定される静摩擦係数が0.20以上であり、かつ下記の測定条件による平板摺動試験により測定される動摩擦係数が0.15以下である、
化成処理鋼板。
(静摩擦係数の測定条件)
化成処理鋼板から、幅30mm×長さ300mmの引き抜き用供試サンプルと、幅30mm×長さ40mmの2つの押さえ用供試サンプルと、を切り出す。2つの押さえ用供試サンプルを、それぞれ、両面テープによって取付金型に接着させる。その後、引き抜き用供試サンプルの表面に一方の押さえ用供試サンプルの裏面が、引き抜き用供試サンプルの裏面に他方の押さえ用供試サンプルの表面が、それぞれ接触するように、同一水平面上に対向して配置した前記2つの押さえ用供試サンプルの間に引き抜き用供試サンプルを配置する。さらに、引き抜き用供試サンプルの両側から前記2つの押さえ用供試サンプルを押し当て、取付金型を介して、前記2つの押さえ用供試サンプルを引き抜き用供試サンプル側に600kgfの荷重で押圧する。この状態で、引き抜き用供試サンプルを垂直方向に100mm/minの速度で引き抜き、引き抜き直後に印加されていた、引き抜き用供試サンプルを引き抜くための力を測定する。そして、前記引き抜き用供試サンプルを引き抜くための力を、600kgfで除算して、得られた値を静摩擦係数とする。
(動摩擦係数の測定条件)
前記静摩擦係数の測定において、引き抜き用供試サンプルが50mm移動した時点で印加されていた、引き抜き用供試サンプルを引き抜くための力を測定し、前記50mm移動した時点で印加されていた力を、600kgfで除算して、得られた値を動摩擦係数とする。 - 前記化成処理皮膜は、前記化成処理皮膜の全質量に対して5.0質量%以上40質量%以下の量の前記光沢調整粒子を含有する、請求項1に記載の化成処理鋼板。
- 前記化成処理皮膜は、表面光沢値が240以下であって、前記表面光沢値は、ISZ8741で規定されている「鏡面光沢度-測定方法」に準拠して求めた60°鏡面光沢度である、請求項2に記載の化成処理鋼板。
- 前記有機樹脂は、ポリウレタン、ポリエステル、アクリル樹脂、エポキシ樹脂、ポリオレフィンおよびフッ素樹脂からなる群から選択される1つまたは複数の樹脂である、請求項1~3のいずれか1項に記載の化成処理鋼板。
- 前記化成処理皮膜は、単層である、請求項1~4のいずれか1項に記載の化成処理鋼板。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002241960A (ja) | 2001-02-16 | 2002-08-28 | Nippon Steel Corp | 成形性・摺動性に優れ、かつ積層時の横滑りやコイル潰れを起こしにくい潤滑処理金属板 |
JP2003261825A (ja) | 2002-03-07 | 2003-09-19 | Kansai Paint Co Ltd | 潤滑鋼板用表面処理組成物及び潤滑鋼板 |
JP2016040095A (ja) | 2014-08-12 | 2016-03-24 | 日新製鋼株式会社 | 塗装金属板の製造方法および外装建材 |
JP2016121390A (ja) | 2014-03-27 | 2016-07-07 | 日新製鋼株式会社 | 化成処理鋼板およびその製造方法ならびに化成処理液 |
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JP2002241960A (ja) | 2001-02-16 | 2002-08-28 | Nippon Steel Corp | 成形性・摺動性に優れ、かつ積層時の横滑りやコイル潰れを起こしにくい潤滑処理金属板 |
JP2003261825A (ja) | 2002-03-07 | 2003-09-19 | Kansai Paint Co Ltd | 潤滑鋼板用表面処理組成物及び潤滑鋼板 |
JP2016121390A (ja) | 2014-03-27 | 2016-07-07 | 日新製鋼株式会社 | 化成処理鋼板およびその製造方法ならびに化成処理液 |
JP2016040095A (ja) | 2014-08-12 | 2016-03-24 | 日新製鋼株式会社 | 塗装金属板の製造方法および外装建材 |
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