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April 5, 2026ACS Applied Polymer Materials

Synergistic Enhancement of the Flame Retardancy, Mechanical Properties, and Thermal Insulation of Rigid Polyurethane Foam via a Boron-Containing Chitosan Derivative

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Authors

NSNian X. SunInner Mongolia Agricultural UniversitySLShengyan LiuFuzhou UniversityQCQinghuang ChenMaterials Science & Engineering

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Implication

Demonstrates improved flame retardancy and mechanical properties in rigid polyurethane foam using a boron-containing chitosan derivative, indicating a promising material advancement.

Key Points

  • The central aim is to enhance the performance of rigid polyurethane foam using a boron-containing chitosan derivative.
  • Synthesis of a boron-containing chitosan derivative (CBPM)
  • Combustion tests to assess flame retardancy and smoke suppression
  • Measurement of mechanical properties and thermal insulation characteristics
  • RPUF/20CBPM composite shows a limiting oxygen index of 27.5% and UL-94 rating of V-0 for flame retardancy.
  • Heat release rate and hazardous gas release significantly reduced compared to pure RPUF.
  • Residual carbon yield increased from 0.5% to 12.2% at 800 °C, indicating excellent char-forming ability.
  • RPUF/20CBPM exhibits a compressive strength of 0.23 MPa and thermal conductivity of 0.0347 W/(m·K).

Cite This Study

Sun et al. (2026) studied this question.

synapsesocial.com/papers/69d1fd9ca79560c99a0a3c84https://doi.org/10.1021/acsapm.5c04376
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