KR102098024B1 - 표면 처리용 자기치유 코팅조성물, 이를 이용하여 표면 처리된 강판 및 이의 제조방법 - Google Patents
표면 처리용 자기치유 코팅조성물, 이를 이용하여 표면 처리된 강판 및 이의 제조방법 Download PDFInfo
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
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Abstract
Description
도 2는 실시예 및 비교예에 따른 코팅조성물의 FT-IR 스펙트럼을 나타낸 것이다.
도 3은 본 발명의 실시예에 따른 코팅조성물이 적용된 강판의 자기치유 전 및 후의 사진을 광학현미경으로 관찰한 것이다.
도 4는 본 발명의 비교예에 따른 코팅조성물이 적용된 강판의 자기치유 전 및 후의 사진을 광학현미경으로 관찰한 것이다.
도 5는 본 발명의 실시예에 따른 코팅조성물이 적용된 강판에 스크래치를 발생시켜 5wt% 염수에 침지시킨 후 시간경과에 따른 사진을 나타낸 것이다.
도 6은 본 발명의 비교예에 따른 코팅조성물이 적용된 강판에 스크래치를 발생시켜 5wt% 염수에 침지시킨 후 시간경과에 따른 사진을 나타낸 것이다.
도 7은 본 발명의 실시예에 따른 코팅조성물의 액체 크로마토그래피 질량분석 결과이다.
도 8은 디터셔리부틸에틸렌디아민 용출 시 강판의 내부식 특성의 향상을 확인하기 위해서 시험한 전기화학 임피던스 분석 결과 그래프이다.
Claims (14)
- 용제에 폴리올 및 디이소시아네이트를 투입하고 반응시켜 폴리우레탄 프리폴리머를 제조하는 단계;
상기 폴리우레탄 프리폴리머와 디터셔리부틸에틸렌디아민 및 글리세롤을 반응시켜 전구체를 제조하는 단계; 및
상기 전구체에 가교제를 투입하여 반응시키는 단계를 포함하는,
자기치유 코팅조성물의 제조방법.
- 제1항에 있어서,
상기 디터셔리부틸에틸렌디아민 및 글리세롤의 중량비가 1:3 내지 3:1인 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제1항에 있어서,
상기 가교제가 헥사메틸렌 디이소시아네이트 삼중체(hexamethylene diisocyanate trimer), 폴리머릭 이소시아네이트(polymeric isocyanates) 및 폴리 디이소시아네이트(poly(diisocyanate) 중에서 선택된 1종 이상인 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제1항에 있어서,
상기 가교제가 상기 전구체 100중량부에 대하여 7 내지 10 중량부로 투입되는 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제1항에 있어서,
상기 폴리우레탄 프리폴리머를 제조하는 단계가 디부틸틴디라우레이트 (dibutyltin dilaurate, DBTDL), 옥토산 주석산염(stannous octoate), 디부틸틴 디아세테이트(dibutyltin diacetate), 디부틸틴비스(라우릴메르캅타이드)(dibutyltin bis(lauryl mercaptide), 아세트산 아연(zinc acetate), 옥토산 아연(zinc octoate) 및 비스무스 카르복실레이트(bismuth carboxylate) 중에서 선택된 1종 이상의 촉매의 존재 하에서 수행되는 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제5항에 있어서,
상기 촉매가 폴리올 및 디이소시아네이트 총 중량에 대하여 0.01 내지 1 중량부로 투입되는 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제1항에 있어서,
상기 용제가 메틸에틸케톤 (methyl ethyl ketone), 아세톤, 부틸아세테이트, 에틸아세테이트, 클로로포름 및 톨루엔 중에서 선택된 1종 이상인 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제1항에 있어서,
상기 폴리올이 폴리프로필렌글리콜, 폴리카보네이트디올, 폴리에틸렌글리콜, 폴리테트라메틸렌글리콜 및 폴리카프로락톤디올 중에서 선택된 1종 이상인 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제1항에 있어서,
상기 디이소시아네이트가 아이소포론 디이소시아네이트(isophorone diisocyanate), 헥사메틸렌 디이소시아네이트(hexamethylene diisocyanate), 4,4'-메틸렌비스사이클로헥실이소시아네이트(4,4'-methylenebis(cyclohexyl isocyanate)), 톨루엔 디이소시아네이트(toluene diisocyanate) 및 메틸렌디페닐 디이소시아네이트(4,4'-methylene diphenyl diisocyanate) 중에서 선택된 1종 이상인 것을 특징으로 하는 자기치유 코팅조성물의 제조방법.
- 제13항에 있어서,
상기 자기치유 코팅층의 두께가 20 내지 100 ㎛인 것을 특징으로 하는 표면 처리 강판.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088177A (zh) * | 2021-04-01 | 2021-07-09 | 南阳金牛彩印集团有限公司 | 一种室温自修复型聚氨酯涂层树脂及其制备方法 |
| CN117304752A (zh) * | 2023-09-27 | 2023-12-29 | 山东冠洲股份有限公司 | 一种耐腐蚀不锈钢彩涂板及其制备方法 |
| CN117327448A (zh) * | 2023-09-28 | 2024-01-02 | 山东冠洲股份有限公司 | 一种高耐蚀连续封闭聚酯彩涂板及其制备方法 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113088177A (zh) * | 2021-04-01 | 2021-07-09 | 南阳金牛彩印集团有限公司 | 一种室温自修复型聚氨酯涂层树脂及其制备方法 |
| CN117304752A (zh) * | 2023-09-27 | 2023-12-29 | 山东冠洲股份有限公司 | 一种耐腐蚀不锈钢彩涂板及其制备方法 |
| CN117304752B (zh) * | 2023-09-27 | 2024-07-02 | 山东冠洲股份有限公司 | 一种耐腐蚀不锈钢彩涂板及其制备方法 |
| CN117327448A (zh) * | 2023-09-28 | 2024-01-02 | 山东冠洲股份有限公司 | 一种高耐蚀连续封闭聚酯彩涂板及其制备方法 |
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