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Strategy for Constructing Phosphorus-Based Flame-Retarded Polyurethane Elastomers for Advanced Performance in
Yuxin Luo1, Zhishuai Geng1, Wenchao Zhang1
1National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China.
Polymers
|September 28, 2023
Summary
This review explores reactive phosphorus flame retardants for polyurethane elastomers (PUE), enhancing fire safety without compromising physical properties. It highlights P-N synergistic flame retardants and future applications in advanced materials.
Area of Science:
- Materials Science
- Polymer Chemistry
- Fire Safety Engineering
Background:
- Polyurethane elastomers (PUE) offer excellent physical properties for diverse applications but suffer from flammability.
- Improving the flame retardancy of PUE is crucial for expanding its use in daily applications.
- Reactive flame retardants are preferred for their minimal impact on polymer properties and low migration tendency.
Purpose of the Study:
- To provide a comprehensive overview of reactive phosphorus-containing and P-N synergistic flame retardants for PUE.
- To analyze the molecular design and mechanisms of these flame retardants.
- To discuss the future prospects of flame-retarded PUE in emerging technological fields.
Main Methods:
- Literature review focusing on phosphorus-based flame retardants in PUE.
- Analysis of structural characteristics, thermal performance, combustion behavior, and mechanical properties of PUE.
- Examination of flame retardant mechanisms, including P-N synergy.
Main Results:
- Reactive phosphorus flame retardants, particularly P-N synergistic systems, offer effective flame retardancy for PUE.
- These retardants maintain or enhance the physical and thermal properties of PUE.
- Molecular design strategies are key to optimizing flame retardant performance.
Conclusions:
- Reactive phosphorus flame retardants are a viable non-halogenated solution for PUE fire safety.
- Future research should focus on advanced molecular designs for enhanced performance.
- Flame-retarded PUE holds significant potential in self-healing, bio-based, wearable electronics, and solid-state electrolytes.
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