JP2018145325A - 組成物及び塗膜 - Google Patents
組成物及び塗膜 Download PDFInfo
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- JP2018145325A JP2018145325A JP2017042936A JP2017042936A JP2018145325A JP 2018145325 A JP2018145325 A JP 2018145325A JP 2017042936 A JP2017042936 A JP 2017042936A JP 2017042936 A JP2017042936 A JP 2017042936A JP 2018145325 A JP2018145325 A JP 2018145325A
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- coating film
- fluororesin
- resistant resin
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- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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Abstract
【解決手段】フッ素樹脂、耐熱性樹脂、水、及び、沸点が205℃以上の溶剤を含むことを特徴とする組成物。
【選択図】 なし
Description
上記沸点は、1気圧(atm)において測定する値である。
2種以上の溶剤を併用する場合は、そのうち少なくとも1種の溶剤の沸点が205℃以上であればよい。
上記表面張力は、プレート法、リング法、ペンダント・ドロップ法等により測定することができる。尚、上記表面張力は溶剤の温度が20℃の時の数値とする。
CF2=CF−ORf(1)
(式中、Rfは、パーフルオロ有機基を表す。)で表されるパーフルオロ不飽和化合物等が挙げられる。本明細書において、上記「パーフルオロ有機基」とは、炭素原子に結合する水素原子が全てフッ素原子に置換されてなる有機基を意味する。上記パーフルオロ有機基は、エーテル酸素を有していてもよい。
PAS及びPESは、それぞれが1種又は2種以上からなるものであってよい。
PAS、PES及びPAIは、それぞれが1種又は2種以上からなるものであってよい。
上記接着性は、以下の餅接着性試験により測定した値である。
厚さ2.0mmの純アルミニウム板上に接着性を測定する塗膜を厚さ20μmで形成し、塗装板(3cm×3cm)を作製する。上記塗装板の塗膜と反対側の面に2枚の銅板(それぞれ3cm×3cm×2.0mm)を、100℃以上の耐熱性を有するテープで固定し、更に上記銅板の上に針金で取っ手を作製し、サンプルを得る。90℃に加熱したホットプレート上に、ブラストで粗面化したアルミニウム板(3cm×5cm)、切り餅(佐藤食品工業社製サトウのスライス切りもち)、及び、上記サンプルをこの順に重ねて乗せる。この際、上記サンプルは、塗膜が切り餅と直接接するように重ねるものとする。90℃で2分30秒間加熱したのち、ばねばかりを上記取っ手に引っ掛けて上記サンプルを垂直方向に引張り、切り餅から塗膜が離れた時点での重量(g)を記録する。得られた重量からサンプル重量(銅板、テープ、針金を含む)を引いて塗装板の面積(9cm2)で除することで、塗膜の餅に対する接着性(g/cm2)を得る。
なお、上記テープ及び針金は、上記サンプルに対し無視できる程度の重量のものを用いる。
上記碁盤目試験は、JIS K5400に準拠し、セロハンテープ剥離を10回繰り返すことにより行う。
中でも、調理器具や厨房用品に好適に用いることができ、特に炊飯器の内釜に好適に用いることができる。
厚さ2.0mmの純アルミニウム板(A−1050P)の表面をアセトンで脱脂した後、サンドブラストを行い、JIS B 1982に準拠して測定した表面粗度Ra値が2.0〜3.0μmとなるように粗面化した。エアーブローにより表面のダストを除去した後、実施例及び比較例で得た組成物を、ノズル径1.0mmの重力式スプレーガンを用い、吹き付け圧力0.2MPaでスプレー塗装した。上記アルミニウム板上の塗膜を80〜100℃で15分間乾燥した。その後、380℃で20分間焼成し、膜厚約20μmの塗膜を有する塗装板を作製した。
厚さ2.0mmの純アルミニウム板上に接着性を測定する塗膜を厚さ20μmで形成し、塗装板(3cm×3cm)を作製した。上記塗装板の塗膜と反対側の面に2枚の銅板(それぞれ3cm×3cm×2.0mm)を、100℃以上の耐熱性を有するテープで固定し、更に上記銅板の上に針金で取っ手を作製し、サンプルを得た。90℃に加熱したホットプレート上に、ブラストで粗面化したアルミニウム板(3cm×5cm)、切り餅(佐藤食品工業社製サトウのスライス切りもち)、及び、上記サンプルをこの順に重ねて乗せた。この際、上記サンプルは、塗膜が切り餅と直接接するように重ねた。90℃で2分30秒間加熱したのち、ばねばかりを上記取っ手に引っ掛けて上記サンプルを垂直方向に引張り、切り餅から塗膜が離れた時点での重量(g)を記録した。得られた重量からサンプル重量(銅板、テープ、針金を含む)を引いて塗装板の面積(9cm2)で除することで、塗膜の餅に対する接着性(g/cm2)を得た。
JIS K5400に準拠した(セロハンテープ剥離を10回繰り返した)。
実施例1
第1成分 FEPの60%水性分散液
第2成分 PPSの40%水性分散液(PPS粉体40重量部、TEG20重量部、イオン交換水33重量部、ポリオキシエチレンアルキルエーテル6重量部、アセチレンジオール1重量部をサンドミル中で混合粉砕して得た水性分散液)
上記各成分を表1に記載の配合比となるように混合し、攪拌機中で約30分間攪拌して組成物を調製した。上記方法により塗装板を作製し、塗膜の非粘着性及び密着性を評価した。結果を表1に示す。
PPS粉体の代わりにPES粉体を使用した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
FEP水性分散液の代わりにPFA水性分散液を使用した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
TEGの代わりにBDGを使用した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
TEGの代わりにBTGを使用した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
フッ素樹脂とバインダーの配合比を変更した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
第1成分 FEPの60%水性分散液
第2成分 PPSの40%水性分散液(PPS粉体40重量部、TEG20重量部、イオン交換水33重量部、ポリオキシエチレンアルキルエーテル6重量部、アセチレンジオール1重量部をサンドミル中で混合粉砕して得た水性分散液)
第3成分 カーボンブラックの20%水性分散液
第4成分 硫酸バリウムの20%水性分散液
上記各成分を表1に記載の配合比となるように混合し、攪拌機中で約30分間攪拌して組成物を調製した。その後の加工方法については実施例1と同様の方法を用いた。結果を表1に示す。
TEGの代わりにTEG/PG=1/1(質量比)混合溶剤を使用した以外は、実施例7と同様の手順を繰り返した。結果を表1に示す。
TEGの代わりにイオン交換水を使用した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
TEGの代わりにMMBを使用した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
TEGの代わりにNMPを使用した以外は、実施例1と同様の手順を繰り返した。結果を表1に示す。
表中の溶剤量はフッ素樹脂、バインダー(耐熱性樹脂)、水及び溶剤の合計量に対する溶剤量(質量%)を意味する。
表中の添加剤についての数値は、フッ素樹脂及びバインダー(耐熱性樹脂)の合計量に対する添加剤の量(質量%)を意味する。
また、実施例、比較例及び表中の略号は以下の通りである。
FEP:テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体
PFA:テトラフルオロエチレン/パーフルオロ(アルキルビニルエーテル)共重合体
PPS:ポリフェニレンサルファイド
PES:ポリエーテルスルフォン
TEG:トリエチレングリコール
BDG:ジエチレングリコールモノブチルエーテル
BTG:トリエチレングリコールモノブチルエーテル
PG:プロピレングリコール
MMB:3−メチル−3−メトキシブタノール
NMP:N-メチル−2−ピロリドン
1a:塗膜
1b:アルミニウム板
2:銅板
3:銅板
4:取っ手
5:サンプル
6:アルミニウム板
7:切り餅
8:ホットプレート
Claims (16)
- フッ素樹脂、耐熱性樹脂、水、及び、沸点が205℃以上の溶剤を含むことを特徴とする組成物。
- 前記フッ素樹脂と前記耐熱性樹脂との質量比が1/99〜40/60である請求項1記載の組成物。
- 前記フッ素樹脂及び前記耐熱性樹脂の合計量が、前記フッ素樹脂、前記耐熱性樹脂、前記水及び前記溶剤の合計量に対して20〜50質量%である請求項1又は2記載の組成物。
- 前記溶剤の含有量が、前記フッ素樹脂、前記耐熱性樹脂、前記水及び前記溶剤の合計量に対して5〜50質量%である請求項1、2又は3記載の組成物。
- 前記フッ素樹脂が溶融加工性フッ素樹脂である請求項1、2、3又は4記載の組成物。
- 前記耐熱性樹脂がポリアリーレンサルファイド又はポリエーテルスルフォンである請求項1、2、3、4又は5記載の組成物。
- 前記耐熱性樹脂が、ポリアリーレンサルファイド又はポリエーテルスルフォンと、ポリアミドイミドとである請求項1、2、3、4、5又は6記載の組成物。
- 前記溶剤が、ジエチレングリコール、トリエチレングリコール、テトラエチレングリコール、グリセリン、ジエチレングリコールモノブチルエーテル、トリプロピレングリコールモノメチルエーテル、トリエチレングリコールモノメチルエーテル、トリエチレングリコールモノブチルエーテル、ポリエチレングリコールモノメチルエーテル、トリエチレングリコールジメチルエーテル、テトラエチレングリコールジメチルエーテル、ポリエチレングリコールジメチルエーテル、及び、1,4−ブタンジオールからなる群より選択される少なくとも1種である請求項1、2、3、4、5、6又は7記載の組成物。
- 塗料である請求項1、2、3、4、5、6、7又は8記載の組成物。
- ワンコート用塗料である請求項1、2、3、4、5、6、7、8又は9記載の組成物。
- 請求項1、2、3、4、5、6、7、8、9又は10記載の組成物から形成された塗膜。
- 請求項11記載の塗膜を備える調理器具。
- 請求項11記載の塗膜を備える内釜を備える炊飯器。
- 水を含む組成物から形成され、
フッ素樹脂及び耐熱性樹脂を含み、
餅接着性試験による餅に対する接着性が20.0g/cm2以下である
ことを特徴とする塗膜。 - 碁盤目試験の結果が100/100である請求項14記載の塗膜。
- 基材と、前記基材上に形成された請求項14又は15記載の塗膜とを備える積層体。
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