JP6477832B1 - ポリプロピレン樹脂の親水化処理方法 - Google Patents
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Abstract
【解決手段】処理装置1が、処理槽2と、循環ポンプ5を備えた配管4から連続するダイヤモンド電極を備えた電解セル6と、この電解セル6から処理槽2に供給する配管7とを有し、処理槽2及び電解セル6には85〜98重量%の濃度の硫酸が充填されていて、電解セル6に電流を通電して、硫酸を電気分解することにより過硫酸溶液Sを生成して、この過硫酸溶液Sを配管7を経由して処理槽2に供給し、そして、処理槽2内には、被処理対象であるポリプロピレン樹脂板8が治具8Aに固定された状態で上下方向に吊設されていて、濃度が3g/L以上である過硫酸溶液Sによりポリプロピレン樹脂板8を100〜130℃で処理するポリプロピレン樹脂の親水化処理方法。
【選択図】図1
Description
まず、ヨウ素滴定により処理液(過硫酸溶液S)中に含まれる全酸化剤濃度を測定する。このヨウ素滴定とは、過硫酸溶液Sにヨウ化カリウム(KI)を加えてヨウ素(I2)を遊離させ、そのI2をチオ硫酸ナトリウム標準溶液で滴定してI2の量を求め、そのI2の量から酸化剤濃度を求めるものである。次に、過硫酸溶液Sの過酸化水素濃度のみを過マンガン酸カリウム滴定により求め、ヨウ素滴定値から過マンガン酸カリウム滴定値を差し引くことにより過硫酸濃度を算出した。
過硫酸溶液Sにより親水化処理されたポリプロピレン樹脂板8に対し、下記表1に示す流れでめっき処理を施し、密着性試験用サンプルにとした。
図1に示す装置を用いて、ポリプロピレン樹脂板8の表面処理を行った。処理槽の仕様及び条件は次の通りである。
処理槽2の容積:40L
ポリプロピレン樹脂板8の大きさ:500mm×500mm×厚さ5mm
<過硫酸生成用電解セル6及び電解条件>
セル容積:0.5L
陽極及び陰極:ダイヤモンド電極(直径150mm)
バイポーラ電極材質:陽極、陰極と同じ
電流密度:50A/dm2
液循環量:52L/hr
<親水化処理条件>
硫酸濃度:92重量%
過硫酸濃度:10g/L
処理温度:120℃
処理時間:60分
電解硫酸処理条件を表2に示すように種々設定を変更した以外は実施例1と同様にしてクロムめっきを施し、めっきの密着性を評価した。結果を親水化処理条件とともに表2にあわせて示す。
過硫酸溶液の代わりに、硫酸濃度92重量%の硫酸溶液を用いた以外は実施例1と同様にしてクロムめっきを施し、めっきの密着性を評価した。結果を処理条件とともに表2にあわせて示す。
2 処理槽
3 恒温ヒータ
4 配管
5 循環ポンプ
5A 熱交換器
6 電解セル
6A 陽極
6B 陰極
6C バイポーラ電極
7 配管
8 ポリプロピレン樹脂板
S 過硫酸溶液
Claims (4)
- 硫酸を電気分解した溶液でポリプロピレン樹脂の表面を処理する、クロム及びマンガンフリーの、ポリプロピレン樹脂のめっき前処理としての親水化処理方法。
- 前記溶液の硫酸濃度が85〜98重量%である、請求項1に記載のポリプロピレン樹脂の親水化処理方法。
- 前記親水化処理における前記溶液の温度が100〜130℃である、請求項1又は2に記載のポリプロピレン樹脂の親水化処理方法。
- 前記溶液の過硫酸濃度が3g/L以上である、請求項1〜3のいずれかに記載のポリプロピレン樹脂の親水化処理方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017210280A JP6477832B1 (ja) | 2017-10-31 | 2017-10-31 | ポリプロピレン樹脂の親水化処理方法 |
| PCT/JP2018/034105 WO2019087588A1 (ja) | 2017-10-31 | 2018-09-14 | ポリプロピレン樹脂の親水化処理方法 |
| US16/760,030 US20200347196A1 (en) | 2017-10-31 | 2018-09-14 | Hydrophilization treatment method of polypropylene resin |
| CN201880059526.3A CN111133129A (zh) | 2017-10-31 | 2018-09-14 | 聚丙烯树脂的亲水化处理方法 |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2017210280A JP6477832B1 (ja) | 2017-10-31 | 2017-10-31 | ポリプロピレン樹脂の親水化処理方法 |
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| Publication Number | Publication Date |
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| JP6477832B1 true JP6477832B1 (ja) | 2019-03-06 |
| JP2019081928A JP2019081928A (ja) | 2019-05-30 |
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| JP2017210280A Active JP6477832B1 (ja) | 2017-10-31 | 2017-10-31 | ポリプロピレン樹脂の親水化処理方法 |
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| Country | Link |
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| US (1) | US20200347196A1 (ja) |
| JP (1) | JP6477832B1 (ja) |
| CN (1) | CN111133129A (ja) |
| WO (1) | WO2019087588A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7484389B2 (ja) * | 2020-04-28 | 2024-05-16 | 栗田工業株式会社 | 樹脂成形体のエッチング方法及び樹脂成形体用エッチング処理システム |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597336A (en) * | 1968-04-22 | 1971-08-03 | Phillips Petroleum Co | Electroplating plastics |
| JPS5755933A (en) * | 1980-09-18 | 1982-04-03 | Matsushita Electric Ind Co Ltd | Electroless plating method on polymer material |
| JP4808551B2 (ja) * | 2006-06-16 | 2011-11-02 | クロリンエンジニアズ株式会社 | 過硫酸の製造方法 |
| JP2010159457A (ja) * | 2009-01-08 | 2010-07-22 | Ebara-Udylite Co Ltd | プラスチック被めっき素材上への金属皮膜形成方法 |
| JP2010189748A (ja) * | 2009-02-20 | 2010-09-02 | Osaka Prefecture | 金属凸部を有するポリマー材料の製造方法 |
| JP5376152B2 (ja) * | 2009-09-05 | 2013-12-25 | 栗田工業株式会社 | 硫酸電解方法 |
| JP5710345B2 (ja) * | 2011-03-31 | 2015-04-30 | ペルメレック電極株式会社 | 酸化性物質の総濃度測定方法、酸化性物質の総濃度測定用濃度計およびそれを用いた硫酸電解装置 |
| US10260000B2 (en) * | 2012-01-23 | 2019-04-16 | Macdermid Acumen, Inc. | Etching of plastic using acidic solutions containing trivalent manganese |
| US9267077B2 (en) * | 2013-04-16 | 2016-02-23 | Rohm And Haas Electronic Materials Llc | Chrome-free methods of etching organic polymers with mixed acid solutions |
| JP6288213B1 (ja) * | 2016-11-01 | 2018-03-07 | 栗田工業株式会社 | プラスチック表面の処理方法 |
-
2017
- 2017-10-31 JP JP2017210280A patent/JP6477832B1/ja active Active
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2018
- 2018-09-14 CN CN201880059526.3A patent/CN111133129A/zh active Pending
- 2018-09-14 US US16/760,030 patent/US20200347196A1/en not_active Abandoned
- 2018-09-14 WO PCT/JP2018/034105 patent/WO2019087588A1/ja not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019087588A1 (ja) | 2019-05-09 |
| US20200347196A1 (en) | 2020-11-05 |
| JP2019081928A (ja) | 2019-05-30 |
| CN111133129A (zh) | 2020-05-08 |
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