A novel lightweight ceramizable Si–B hybrid phenolic aerogel composite with excellent thermal insulation and ablation resistance

Key Points

• To prepare phenolic aerogel composites with improved antioxidant and ablation-resistant properties through silicon-boron hybrid modification.
• Synthesis of phenolic aerogel using silicon-boron hybrid materials.
• Evaluation of thermal insulation properties.
• Assessment of ablation resistance in extreme conditions.
• Significantly improved thermal insulation properties compared to traditional materials.
• Enhanced ablation resistance demonstrated under simulated aerospace conditions.