Research progress in application of aerogel in flame retardant field

doi:10.19491/j.issn.1001-9278.2024.03.019

Abstract

Abstract:

This paper reviewed the research progress in the application of silicone⁃aerogels， organic aerogels， and carbon aerogels in the flame⁃retardant field. The characteristics of aerogels and corresponding flame⁃retardant modification technologies as well as their effects on the flame retardancy of materials were summarized. The advantages， disadvantages， and future development trend of various aerogels are discussed.

Key words: silica aerogel, organic aerogel, carbon aerogel, flame retardant

CLC Number:

TQ325

HAO Jinling, CHEN Yajun, QIAN Lijun. Research progress in application of aerogel in flame retardant field[J]. China Plastics, 2024, 38(3): 116-125.

Figures/Tables 18

样品	TTI/s	TTPHRR/s	PHRR/kW·m^-2	THR/MJ·kW^-1
TEOS/HA	4	56	48.25	5.49
SS/HA	7	51	45.35	3.05
SS/PA	6	52	40.35	2.73

Tab.1. Detailed cone calorimeter data of various SAs［7］

Fig.1. Digital photos of the original aerogel before combustion （a） and after combustion （b） for 10 seconds and the relationship between combustion rate and the content of nanometer magnesium hydroxide （c）［14］

Fig.2. The combustion test of CNF and CNFA aerogel［16］

Fig.3. SEM of nano⁃TiO2/cellulose aerogel［18］

Fig.4. LOI and UL 94 test results of the samples［20］

Fig.5. Synthetic routes of DOPO⁃IA （a） and cellulose composite aerogels （b）［25］

Fig.6. （a） and （b） digital photos of the combustion process and the residue after combustion of BC aerogel；（c） and （d） digital photos of the combustion process and the residue after combustion of PA@BC aerogel；（e） and （f） digital photos of the combustion process and the residue after combustion of Ag/PA@BC aerogel［29］

Fig.7. Preparation of the crosslinked P4A4M4 composite aerogels［33］

Fig.8. Digital photographs of the residues of PVA⁃based aerogels after cone calorimeter test［33］

Fig.9. Effect of PA⁃APP on THR specific modulus and morphology of PVA/MMT aerogels［36］

Fig.10. PA/PC aerogels［42］

Fig.11. The burning behaviors of neat pectin and pectin/BNNSs⁃2 aerogels［44］

Fig.12. Flame resistance of PSi aerogels［45］

Fig.13. Vertical burning tests of aramid/PI aerogel composites with different PI aerogels mass fraction［46］

Fig.14. The flame retardancy of PI@MXene［47］

Fig.15. Combustion behaviors of PI⁃based aerogels as a function of burning time［48］

Fig.16. Alg⁃CaCO3 composite aerogel［50］

Fig.17. Photogaphs showing the burn test for the KLGA sample［54］

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