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A platform for research: civil engineering, architecture and urbanism
Lightweight and flame retardant silicone rubber foam prepared by supercritical nitrogen: The influence of flame retardants combined with ceramicizable fillers
Graphical abstract Display Omitted
Highlights The density of silicone rubber foam with ceramizable coating was 0.12 g/cm3. Talc bonded APP and CB formed a ceramic layer on the surface at high temperatures. The peak heat release rate was only 98.7 kW/m2. The compression strength of sintered products increased to 908 N.
Abstract Silicone rubber foam has wide application potential because of the lightweight and good mechanical flexibility. Herein, silicone rubber foam with ceramicizable flame retardant coating was prepared by talc, ammonium polyphosphate (APP) and carbon black (CB). The composite foam density was 0.12 g/cm3. Talc had significant melting and flame retardant effects on the ceramicization. The molten crystal structure condensed APP and CB together in turn, and finally formed ceramics with higher bending strength, which improved the flame retardant and ceramic properties. When 30 % talc, 10 % APP and 20 % CB in the coating, the peak heat release rate was 98.7 kW/m2, which was reduced by 300 % compared with the pure silicone rubber coating. After ablation, the compression strength was 900 % higher than that of pure silicone rubber coating because of the formation of ceramicizable coating. This work provides a promising strategy for the preparation of highly efficient flame retardant silicone rubber foam.
Lightweight and flame retardant silicone rubber foam prepared by supercritical nitrogen: The influence of flame retardants combined with ceramicizable fillers
Graphical abstract Display Omitted
Highlights The density of silicone rubber foam with ceramizable coating was 0.12 g/cm3. Talc bonded APP and CB formed a ceramic layer on the surface at high temperatures. The peak heat release rate was only 98.7 kW/m2. The compression strength of sintered products increased to 908 N.
Abstract Silicone rubber foam has wide application potential because of the lightweight and good mechanical flexibility. Herein, silicone rubber foam with ceramicizable flame retardant coating was prepared by talc, ammonium polyphosphate (APP) and carbon black (CB). The composite foam density was 0.12 g/cm3. Talc had significant melting and flame retardant effects on the ceramicization. The molten crystal structure condensed APP and CB together in turn, and finally formed ceramics with higher bending strength, which improved the flame retardant and ceramic properties. When 30 % talc, 10 % APP and 20 % CB in the coating, the peak heat release rate was 98.7 kW/m2, which was reduced by 300 % compared with the pure silicone rubber coating. After ablation, the compression strength was 900 % higher than that of pure silicone rubber coating because of the formation of ceramicizable coating. This work provides a promising strategy for the preparation of highly efficient flame retardant silicone rubber foam.
Lightweight and flame retardant silicone rubber foam prepared by supercritical nitrogen: The influence of flame retardants combined with ceramicizable fillers
Han, Yingxia (author) / Yang, Lijuan (author) / Yu, Zhen (author) / Zhao, Yingjie (author) / Zhang, Zhen Xiu (author)
2023-02-12
Article (Journal)
Electronic Resource
English
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