Polyborosiloxane： advances and application

doi:10.19491/j.issn.1001-9278.2025.11.006

Abstract

Abstract:

This paper comprehensively reviews recent research advances and developmental trends of polyborosiloxane （PBS） worldwide， with a focus on its synthetic strategies， functional mechanisms， and application progress in multifunctional composites. Finally， the paper proposes future research directions and potential applications of PBS.

Key words: polyborosiloxane, self?healing material, heat?resistant material, flame?retardant composite, composite

CLC Number:

TQ314.24⁺8

XIONG Yihuimeng, QIAN Lijun. Polyborosiloxane： advances and application[J]. China Plastics, 2025, 39(11): 32-40.

Figures/Tables 13

Fig. 1. Structural formulas of polyborosiloxane （three types）

Fig.2. Reaction mechanism of the nonhydrolytic method

Fig.3. Reaction mechanism of the cohydrolysis polycondensation method

Fig.4. Reaction mechanism of the equilibrium polymerization method

Fig.5. Reaction mechanism of the Piers⁃Rubinsztain synthesis method［15］

Fig.6. Schematic structures of PBS with different crosslinking types［16］

Fig.7. Hydrogen bonding structures and mechanisms in polyborosiloxane［24］

Fig.8. Coordination bond structures and mechanisms in polyborosiloxane［24］

Fig.9. Dynamic crosslinking bond structures and mechanisms in polyborosiloxane［28］

Fig.10. Molecular structure of self⁃healable polysiloxane elastomer［33］

Fig.11. Reaction mechanism of ceramic phase formation from TiSi2 and polyborosiloxane［42］

Fig.12. Synthetic route of hyperbranched polyborosiloxane［51］

Fig.13. Synthetic route of linear polyborosiloxane［52］

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