Czasopismo | OCHRONA PRZED KOROZJĄ | Rocznik 2018 - zeszyt 12

Polimery przewodzące w ochronie przed korozją

Conductive polymers in corrosion protection

10.15199/40.2018.12.2

Lidia Adamczyk

nr katalogowy: 117429
10.15199/40.2018.12.2

Streszczenie

W ostatnich latach zwraca się szczególną uwagę na projektowanie i przygotowywanie nowych powłok chroniących metale przed korozją. Wysiłek ten po części jest motywowany pragnieniem zastąpienia powłok chromianowych używanych do zabezpieczenia korozji żelaza i stopów aluminiowych. Udowodniono, iż chrom zagraża środowisku i ludzkiemu zdrowiu, a jego użycie w wielu krajach będzie radykalnie ograniczane w następnych latach. Elektroaktywne polimery przewodzące reprezentują klasę interesujących materiałów do zastosowania w postaci powłok chroniących przed korozją i prawdopodobnie to one, lub układy kompozytowe na ich bazie, zastąpią powłoki chromianowe. Podobnie jak powłoki chromianowe polimery przewodzące wykazują interesujące i potencjalnie korzystne oddziaływanie na aktywne stopy powodując zmianę ich korozyjnego zachowania. Szczególne właściwości charakteryzujące polimery przewodzące, takie jak trwałość fizykochemiczna, stosunkowo łatwe ich otrzymywanie, możliwość modyfikacji, oraz dobre przewodnictwo, różni je od tradycyjnych powłok organicznych. Najczęściej badanymi powłokami polimerowymi są polianilina (PANI), polipirol (PPy) i politiofeny (PT), ze względu na możliwość ich modyfikacji i łatwość uzyskania [1-3]. Praca ta stanowi przegląd literaturowy perspektyw zastosowania powłok na bazie polimerów przewodzących w ochronie przed korozją.

Abstract

Particular considerations has been given in recent years to the design and preparation of new coatings intended to protect metals against corrosion. This effort is partially motivated by the wish to replace chromate coatings used for the corrosion protection of iron an aluminium alloys. It has been proved that chromium poses a threat to the natural environment and human health, and its use will be radically reduced in many countries in the years to come. Electroactive conductive polymers represent a class of interesting materials to be used in the form of corrosion protective coatings, and it is probably them or composite systems based on them that will replace chromate coatings. Just like chromate coatings, conductive polymers exhibit an interesting and potentially advantageous influence on active alloys, causing a change in their corrosion behaviour. Unique properties of conductive polymers (ECP), such as physicochemical stability, relatively easy fabrication, modifiability and good conductivity, distinguish them from traditional organic coatings. The most often examined polymer coatings include polyaniline (PANI), polypyrrole (PPy) and polythiophenes, because of their susceptibility to modification and ease of obtaining [1-3]. This article provides a review of literature outlooks for using conductive polymerbased coatings in corrosion protection.

Słowa kluczowe

Keywords

Bibliografia

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