Enhanced Flame Retardancy and Smoke Suppression of the Silicone Rubber Foam With Low Loading of Modified Expandable Graphite

Tao Lin; Ke Shang; Gui‐De Lin; Jin‐Jun Yang; Junsheng Wang

doi:10.1002/app.56885

journal article Feb 22, 2025

Enhanced Flame Retardancy and Smoke Suppression of the Silicone Rubber Foam With Low Loading of Modified Expandable Graphite

Tao Lin

Ke Shang

Gui‐De Lin Jin‐Jun Yang Junsheng Wang

Journal of Applied Polymer Science Vol. 142 No. 20 · Wiley

View at Publisher Save 10.1002/app.56885

Abstract

ABSTRACTThe flame‐retardant silicone rubber foam (SRF) composites were prepared by adding a low loading of expandable graphite modified with γ‐(2,3‐epoxypropoxy)propytrimethoxysilane (EG@KH560). The EG@KH560 was characterized by Fourier transform infrared (FTIR), X‐ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Meanwhile, the effects of EG@KH560 on the micromorphology, flame retardancy, mechanical properties, thermal stability, and combustion behavior of SRF/EG@KH560 composites were investigated. The results show that the compatibility between EG@KH560 and the SRF substrate was significantly improved, thereby reducing the deterioration of tensile and compressive strength in the composites. The composite containing only 2 parts EG@KH560 per hundred parts of the base polymer (2 phr) exhibited excellent flame‐retardant performance, which can pass the FV‐0 rating during the vertical combustion test with a high limiting oxygen index (LOI) value of 31.2. The thermal stability of the composite was also enhanced, as evidenced by a notable increase in the maximum thermal decomposition temperature and the residues at 900°C. Moreover, the total heat release and total smoke release of SRF containing 2 phr EG@KH560 were reduced by 13.1% and 61.0% compared with pure SRF in the cone calorimetry test, indicating a significant improvement in fire safety for the composite with the addition of EG@KH560.

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Metrics

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Citations

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References

Details

Published: Feb 22, 2025
Vol/Issue: 142(20)
License: View

Authors

T

Tao Lin

Tianjin Fire Science and Technology Research Institute of MEM Tianjin China; School of Environmental Science and Safety Engineering Tianjin University of Technology Tianjin China

K

Ke Shang

Tianjin Fire Science and Technology Research Institute of MEM Tianjin China; Key Laboratory of Fire Protection Technology for Industry and Public Building Ministry of Emergency Management Tianjin China; Tianjin Key Laboratory of Fire Safety Technology Tianjin China

G

Gui‐De Lin

Tianjin Fire Science and Technology Research Institute of MEM Tianjin China

J

Jin‐Jun Yang

School of Environmental Science and Safety Engineering Tianjin University of Technology Tianjin China

J

Junsheng Wang

Tianjin Fire Science and Technology Research Institute of MEM Tianjin China; Key Laboratory of Fire Protection Technology for Industry and Public Building Ministry of Emergency Management Tianjin China; Tianjin Key Laboratory of Fire Safety Technology Tianjin China

Funding

National Natural Science Foundation of China Award: 22405232

Natural Science Foundation of Tianjin Municipality Award: 22JCYBJC01720

Cite This Article

Tao Lin, Ke Shang, Gui‐De Lin, et al. (2025). Enhanced Flame Retardancy and Smoke Suppression of the Silicone Rubber Foam With Low Loading of Modified Expandable Graphite. Journal of Applied Polymer Science, 142(20). https://doi.org/10.1002/app.56885

Enhanced Flame Retardancy and Smoke Suppression of the Silicone Rubber Foam With Low Loading of Modified Expandable Graphite

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