Publication:
Triazole-, piperazine-, and DOPO-containing eugenol-based reactive flame retardant for unsaturated polyester resin

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2024-01-01

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Abstract

The flammability of unsaturated polyester resins (UPRs) limits their applications. Herein, a reactive P- and N-containing flame retardant (DPET) having triazole and piperazine rings is reported. The 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) was used to introduce P atoms, and eugenol was used to import reactive double bonds to DPET. Different ratios of DPET were mixed with a commercial UPR and the thermal, mechanical, optical, and flame retardancy properties were measured. The addition of 15% of DPET into neat UPR led to a decrease in the water contact angle from 70° ± 2 to 61° ± 2. The gel content values of the UPRs were found to change between 97.5% and 89%. The optical properties of the UPR were adversely affected by the incorporation of DPET. The modulus of the DPET-containing UPRs increased with increasing amount of DPET and 15% of DPET-containing UPR displayed a modulus value of 1784 ± 86 MPa. When 15% DPET was added to neat UPR, char yields were increased (from 5.6% to 16.6%). Limiting oxygen index (LOI) values increased with increasing amounts of DPET and reached up to 23.4%. Micro cone calorimeter (MCC) test results showed up to a 20.5% reduction in the peak heat release rate (PHRR) of the UPR when 15% DPET was added.

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Kimya, Fizikokimya, Polimer Karakterizasyonu, Temel Bilimler, Mühendislik ve Teknoloji, Chemistry, Physical Chemistry, Characterization of Polymers, Natural Sciences, Engineering and Technology, Mühendislik Bilişim Ve Teknoloji (Eng), Temel Bilimler (Sci), Malzeme Bilimi, Malzeme Bilimi Çokdisiplinli, Polimer Bilimi, Kimya Fiziksel, Engineering Computing & Technology (Eng), Natural Sciences (Sci), Materials Science, Materials Science Multidisciplinary, Polymer Science, Chemistry Physical, Genel Kimya, Fizik Bilimleri, Yüzeyler, Kaplamalar ve Filmler, Polimerler ve Plastikler, Malzeme Kimyası, General Chemistry, Physical Sciences, Surfaces, Coatings and Films, Polymers and Plastics, Materials Chemistry, flame retardance, radical polymerization, resins, thermal properties, thermosets

Citation

Özükanar Ö., Sagdic G., ÇAKMAKÇI E., Özmen F. K., Üreyen M. E., Günay U. S., Durmaz H., Kumbaracı İ. V., "Triazole-, piperazine-, and DOPO-containing eugenol-based reactive flame retardant for unsaturated polyester resin", Journal of Applied Polymer Science, 2024

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