Synthesizing and characterization of novel high-performance heat-resistant bismaleimide IPN coatings containing bisphenol A ethoxylate with improved impact resistance, thermal stability, and hydrophobicity

AKIN E.

Polymer Engineering and Science, cilt.65, sa.6, ss.2955-2973, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 65 Sayı: 6
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1002/pen.27191
  • Dergi Adı: Polymer Engineering and Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.2955-2973
  • Anahtar Kelimeler: bismaleimide resin, bisphenol A ethoxylate, flexible coatings, high-performance, IPN coatings
  • Marmara Üniversitesi Adresli: Evet

Özet

This study developed novel heat-resistant bismaleimide IPN coatings (MA-Bis A coatings) containing a bisphenol A ethoxylate structure with enhanced impact resistance, thermal stability, and hydrophobicity. The coatings employed an interpenetrating polymer network (IPN) formed through cross-linking between bismaleimide chains and bisphenol A ethoxylate diacrylate (Bis A-DA), synergistically combining rigid aromatic groups for strength with flexible ether and methylene linkages for impact resistance. A heat-resistant bismaleimide precursor resin was synthesized and served as the base precursor for MA0, blended with varying amounts of Bis A-DA to produce MA5, MA15, MA30, and MA50 variants. Fluorine- and silicone-modified MA50 derivatives further enhanced performance. A dual-cure process involving UV exposure and thermal curing enabled IPN formation. MA50 exhibited a 425% increase in impact resistance, with silicone modifications providing an additional 62% improvement. Silicone-modified coatings achieved the highest hydrophobicity, with a contact angle of 94° (SI1). Thermal analysis showed T5 values of 391–438°C, T10 values of 416–508°C, and char yields up to 50.4%, with MA50 achieving a Tdi of 433°C. Glass transition temperatures (Tg) ranged from 300°C to 350°C for MA30, MA50, and derivatives. All coatings demonstrated excellent corrosion resistance, adhesion (5B), scratch resistance (6H), and solvent resistance. Highlights: Novel heat-resistant bismaleimide IPN coatings with bisphenol A ethoxylate. Highly improved impact resistance and flexibility. Substantially improved thermal stability. Highly improved hydrophobicity by incorporation with 1% silicon diacrylate. Excellent corrosion resistance, adhesion (5B), and scratch resistance (6H).