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Facile fabrication of multifunctional energy-saving building materials with excellent thermal insulation, robust mechanical property and ultrahigh flame retardancy

Author

Listed:
  • Lian, Richeng
  • Ou, Mingyu
  • Guan, Haocun
  • Cui, Jiahui
  • Piao, Junxiu
  • Feng, Tingting
  • Ren, Jinyong
  • Wang, Yaxuan
  • Wang, Yaofei
  • Liu, Lei
  • Chen, Xilei
  • Jiao, Chuanmei

Abstract

Rigid polyurethane foam (RPUF) has received extensive attention as an energy-saving building material. However, it is still a great challenge to easily fabricate multifunctional RPUFs that combine excellent mechanical properties, flame retardancy, and thermal insulation. Herein, ammonium polyphosphate was chemically modified with 2-aminobenzimidazole (APP@Abz) through an ion exchange reaction. It has been found that APP@Abz is well-dispersed in RPUF matrix. FR-RPUF3 containing 10.0 wt% of APP@Abz shows excellent thermal insulation performance with a 5% increase in thermal conductivity compared to virgin RPUF. In addition, FR-RPUF3 exhibits ultrahigh flame retardancy and smoke suppression (total heat release, total smoke production, and smoke factor decreased by 50.61%, 61.90%, and 64.70%, respectively) in comparison to virgin RPUF. More importantly, FR-RPUF3 exhibits improved mechanical properties and hydrophobicity compared to virgin RPUF. This study is of great importance for the development and application of building insulation materials.

Suggested Citation

  • Lian, Richeng & Ou, Mingyu & Guan, Haocun & Cui, Jiahui & Piao, Junxiu & Feng, Tingting & Ren, Jinyong & Wang, Yaxuan & Wang, Yaofei & Liu, Lei & Chen, Xilei & Jiao, Chuanmei, 2023. "Facile fabrication of multifunctional energy-saving building materials with excellent thermal insulation, robust mechanical property and ultrahigh flame retardancy," Energy, Elsevier, vol. 277(C).
    • Handle: RePEc:eee:energy:v:277:y:2023:i:c:s0360544223011672
    DOI: 10.1016/j.energy.2023.127773
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    References listed on IDEAS

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    1. Sadineni, Suresh B. & Madala, Srikanth & Boehm, Robert F., 2011. "Passive building energy savings: A review of building envelope components," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(8), pages 3617-3631.
    2. Mahmood, Nubla & Yuan, Zhongshun & Schmidt, John & Xu, Chunbao (Charles), 2016. "Depolymerization of lignins and their applications for the preparation of polyols and rigid polyurethane foams: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 60(C), pages 317-329.
    3. Cheng, Jiaji & Niu, Shaoshuai & Kang, Moyun & Liu, Yuqi & Zhang, Feng & Qu, Wenjuan & Guan, Yu & Li, Shaoxiang, 2022. "The thermal behavior and flame retardant performance of phase change material microcapsules with modified carbon nanotubes," Energy, Elsevier, vol. 240(C).
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