Certainly! Here’s a summary of the article **“Advancements in the flame retardancy of aerogel materials: A review”** by Wei Zhang et al., published in **Polymer Degradation and Stability**:
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### Advancements in the Flame Retardancy of Aerogel Materials: A Review
**Journal:** Polymer Degradation and Stability
**Impact Factor:** 7.4
**Publication Date:** 2025-06-12
**Authors:** Wei Zhang, Yifu Xiang, Hongfei He, Wantong Jiang, Zhixin Yang, Linlin Zhang, Bin Li, Bin Yu
**DOI:** [10.1016/j.polymdegradstab.2025.111484](https://doi.org/10.1016/j.polymdegradstab.2025.111484)
#### Abstract:
Aerogels, celebrated for their ultra-low density, high porosity, and exceptional thermal insulation, find applications in construction, aerospace, and energy-saving materials. However, many aerogel systems—especially those made from polymers or organics—show poor flame resistance, limiting their usability in safety-critical scenarios.
This review systematically highlights recent advancements in improving the flame retardancy of aerogel materials. The authors analyze flame-retardant strategies for silica, polymer, and composite aerogels. It includes:
- **Chemical modification:** Incorporation of flame-retardant elements (phosphorus, nitrogen, silicon) into aerogel matrices.
- **Physical blending:** Mixing aerogels with flame-retardant additives or coatings.
- **Nanoengineering approaches:** Use of nanomaterials (e.g. graphene, nano-clays) to enhance thermal stability and barrier properties.
- **Innovative composites:** Development of hybrid aerogels (e.g. polymer/inorganic hybrids) exhibiting both mechanical strength and superior flame resistance.
#### Key Points:
- **Mechanisms:** The review dissects flame-retardant mechanisms in aerogels, such as char formation, endothermic processes, and dilution of combustible gases.
- **Performance metrics:** Advances in limiting oxygen index (LOI), thermal conductivity, and mechanical robustness are discussed.
- **Applications:** Fire-safe building insulation, flexible electronics, aerospace, and battery separators.
- **Challenges:** Trade-offs between flame retardancy, aerogel processability, flexibility, and cost.
- **Future prospects:** Focus on eco-friendly, multi-functional flame-retardant aerogels for sustainable applications.
#### Conclusions:
The authors conclude that, through multifaceted strategies combining chemical design, nanoengineering, and composite development, substantial progress has been made in enhancing the flame retardancy of aerogels. Future research should emphasize scalable fabrication, green chemistry, and multifunctional performance.
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