One-Pot Synthesis of Silicone–Urethane Hybrid Foam and Comparison of Flame Retardant, Rheological, and Mechanical Properties with Polyurethane Foam
This study presents the design and fabrication of silicone-urethane hybrid foam (SUF) to improve fire safety in transportation seating. Tin(II) 2-ethylhexanoate (Sn(OCT)<sub>2</sub>) was used to catalyze reactions between bifunctional isocyanates, polyols, and vinyl-terminated PDMS, enabling simultaneous curing and foaming. Sn(OCT)<sub>2</sub> effectively facilitated both the foaming and gelation processes of silicone and urethane chemistries. The resulting SUF demonstrated a 44.55% reduction in peak heat release rate (PHRR) compared to UF, due to the PDMS network's synergistic flame-retardant and barrier effects. Additionally, the crosslinked PDMS structure maintained strong mechanical integrity. This study offers a simple and effective approach for producing SUF with enhanced fire safety.
Authors
- Yingjie Qian (ORCID: https://orcid.org/0000-0001-5830-6166)
- Sun Kyoung Jeoung (ORCID: https://orcid.org/0000-0002-4253-4874)
- Hyeon Woo Jeong (ORCID: https://orcid.org/0000-0003-2383-5580)
- Sosan Hwang
- A. Young Kim
- Sang Eun Shim (ORCID: https://orcid.org/0000-0002-3678-6856)
- Tae‐Soon Kwon (ORCID: https://orcid.org/0000-0003-4072-4938)
- Sung Hyeon Baeck
Institutions
- Inha University (KR)
- Chinese Academy of Sciences (CN)
- Korea Automotive Technology Institute (KR)
- Guangzhou Institute of Energy Conversion (CN)
- Korea Railroad Research Institute (KR)
Publication Details
- Journal
- Polymers
- Published
- 2025-08-29
- DOI
- https://doi.org/10.3390/polym17172352
- Primary Topic
- Flame retardant materials and properties
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Ministry of Trade, Industry and Energy