Low-temperature powder paint modified with graphene oxide

• Autorzy: Pojnar Katarzyna , Pilch-Pitera Barbara , Roś Natalia , Florczak Łukasz

Identyfikatory

DOI

10.15199/40.2024.2.1

Warianty tytułu

PL

Niskotemperaturowe lakiery proszkowe modyfikowane tlenkiem grafenu

• Języki publikacji: EN

Abstrakty

EN

The aim of this study was to obtain low temperature polyurethane powder paint based on a thermosetting acrylic resin modified with graphene oxide (GO) and to investigate the protective properties of the coatings. The acrylic resin was synthesised by the radical copolymerisation reaction of 2-hydroxyethyl methacrylate (HEMA), methyl methacrylate (MMA) and n-butyl acrylate (BA). Graphene oxide was added to the resin at the synthesis stage in appropriate amounts by weight (so-called in situ method). An optimal amount of added graphene oxide of 0.5 wt% had a significant effect on the final result. Thanks to the use of a commercial crosslinker (VESTANAT B 1358/100), the coatings cured at a relatively low temperature (160°C). The curing process of the coatings was studied by differential scanning calorimetry (DSC). The cross-linked coatings were examined for appearance, physical and chemical properties, and resistance to corrosive media by electrochemical impedance spectroscopy (EIS). The presence of a modifier in the form of graphene oxide increased the hardness, scratch resistance, ductility, contact angle and resistance to corrosive media of the coatings obtained.

PL

Celem badań opisanych w artykule było otrzymanie niskotemperaturowych poliuretanowych powłok proszkowych na bazie termoutwardzalnej żywicy akrylowej modyfikowanej tlenkiem grafenu (GO) oraz określenie właściwości ochronnych powłok. Żywica akrylowa została zsyntezowana w reakcji kopolimeryzacji wolnorodnikowej metakrylanu 2-hydroksyetylu (HEMA), metakrylanu metylu (MMA) i akrylanu n-butylu (BA). Tlenek grafenu został dodany do żywicy na etapie syntezy w odpowiednich ilościach wagowych (metodą in situ). Istotny wpływ na wynik końcowy miała optymalna ilość dodanego tlenku grafenu – na poziomie 0,5% wag. Dzięki zastosowaniu komercyjnego środka sieciującego VESTANAT B 1358/100 powłoki utwardzały się w stosunkowo niskiej temperaturze (160°C). Przebieg procesu utwardzania powłok badano za pomocą różnicowej kalorymetrii skaningowej (DSC). Usieciowane powłoki analizowano pod kątem wyglądu, właściwości fizykochemicznych oraz odporności na media korozyjne, wykonując pomiar metodą elektrochemicznej spektroskopii impedancyjnej (EIS). Obecność modyfikatora w postaci tlenku grafenu zwiększyła twardość, odporność na zarysowanie, tłoczność, kąt zwilżania oraz odporność na media korozyjne otrzymanych powłok.

Słowa kluczowe

EN

powder coatings; graphene oxide; anticorrosion properties

PL

lakiery proszkowe; tlenek grafenu; właściwości antykorozyjne

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Ochrona przed Korozją
• Rocznik: 2024
• Tom: nr 2
• Strony: 30--39
• Opis fizyczny: Bibliogr. 38 rys., tab., wykr.

Twórcy

autor

Pojnar Katarzyna

• Rzeszow University of Technology, Faculty of Chemistry, Department of Polymers and Biopolymers, Rzeszów, Poland
• Doctoral School of Engineering and Technical Sciences, Rzeszow University of Technology, Rzeszów, Poland

• https://orcid.org/0000-0001-9877-7448

autor

Pilch-Pitera Barbara

• Rzeszow University of Technology, Faculty of Chemistry, Department of Polymers and Biopolymers, Rzeszów, Poland

• https://orcid.org/0000-0002-2412-2219

autor

Roś Natalia

• Rzeszow University of Technology, Faculty of Chemistry, Department of Polymers and Biopolymers, Rzeszów, Poland

autor

Florczak Łukasz

• Rzeszow University of Technology, Faculty of Chemistry, Department of Physical Chemistry, Rzeszów, Poland

• https://orcid.org/0000-0003-3368-275X++

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