Preparation method and application of hierarchical structure magnesium-based prussian white hybrid flame-retardant and smoke-suppressing agent
By constructing a polyphenol functional transition layer on the surface of magnesium-based Prussian white and loading ultrafine Prussian blue nanoparticles, a hierarchical hybrid flame retardant and smoke suppressant is formed, which solves the problems of flammability and toxic smoke release of soft PVC and achieves a synergistic effect of flame retardancy, smoke suppression and toxicity reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- UNIV OF SCI & TECH OF CHINA
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing flexible PVC materials are flammable and release toxic fumes. Traditional flame retardants suffer from resource scarcity, performance degradation, and poor interfacial compatibility, making it difficult to achieve the synergistic integration of multiple flame retardant mechanisms.
By constructing a polyphenol functional transition layer on the surface of sheet-like magnesium-based Prussian white and loading ultrafine Prussian blue analog nanoparticles in situ, a hierarchical magnesium-based Prussian white hybrid flame retardant and smoke suppressant is formed, achieving the synergistic effect of physical barrier, catalytic char formation and catalytic oxidation.
Only 3 to 7 parts of the additive can significantly improve the flame retardant, smoke suppression and toxicity reduction properties of flexible PVC. The flame retardant effect is improved by 19.0%, the heat release rate is reduced by 37.4%, the carbon monoxide release is reduced by 21.5%, and the release of toxic gases is significantly reduced.
Smart Images
Figure CN122404802A_ABST