Rigid polyurethane foams with halogen-free flame retardants: Thermal insulation, mechanical, and flame retardant properties

Akdogan E., Erdem M., ÜREYEN M. E., Kaya M.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.137, sa.1, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 137 Sayı: 1
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1002/app.47611
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Biotechnology Research Abstracts, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: composites, foams, mechanical properties, polyurethane, thermal properties, EXPANDABLE GRAPHITE, FIRE BEHAVIOR, NANOCOMPOSITES, CONDUCTIVITY, STABILITY, POLYPHOSPHATE, DECOMPOSITION, NANOCLAYS, HYDROXIDE
  • Anadolu Üniversitesi Adresli: Evet

Özet

Rigid polyurethane foam (RPUF) composites with triphenyl phosphate (TPhP), aluminum trihydrate (ATH), and zinc borate (ZnB) alone, as well as their binary blends, were prepared via a one-shot process. The amount of flame retardant (FR) or FR blend was varied from 10 to 50% by polyol weight percentage, and the weight fraction of the blends was also fixed at 40%. The effects of additives on thermal insulation, mechanical, and flame retardancy properties of the composites were investigated. Thermal conductivity of the neat foam (RPUF) decreased from 22.53 to 21.04-21.58 mW m(-1) K-1. The compressive strength of foams displayed an increase with increasing the amount of TPhP, ATH, and ZnB till 40% by weight. The limited oxygen index values of all foams increased and the flame spread rates of all foams significantly decreased. It was also observed that the flame was self-extinguished in some cases. The cone calorimeter test results indicated that the FR additives improved the flame retardancy of the RPUF. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 47611.