Phosphorous waterborne polyurethanes/single-walled carbon nanotube composites as flame retardant building materials and their application in architectural design
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View abstract on PubMed
Summary
This summary is machine-generated.Novel phosphorous/single-walled carbon nanotubes/waterborne polyurethanes (P/SWCNTs/WPUs) composites offer enhanced flame retardancy and electromagnetic interference (EMI) shielding for building materials. These advanced materials demonstrate superior performance and durability for construction applications.
Area Of Science
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background
- Developing building materials with high flame retardancy and electromagnetic interference (EMI) shielding is crucial.
- Single-walled carbon nanotubes (SWCNTs) offer excellent conductivity and low percolation threshold, making them ideal fillers.
Purpose Of The Study
- To fabricate novel phosphorous/SWCNTs/waterborne polyurethanes (P/SWCNTs/WPUs) with enhanced flame retardancy and EMI shielding properties.
- To investigate the effect of SWCNTs on the morphology, flame retardancy, electrical conductivity, and EMI shielding performance of waterborne polyurethanes.
Main Methods
- SWCNTs were prepared using floating catalyst chemical vapor deposition.
- P/SWCNTs/WPUs were synthesized via in situ polymerization.
- Composite morphology, flame retardancy (damage length, limiting oxygen index), electrical conductivity, and EMI shielding effectiveness were characterized.
Main Results
- The phosphorous-containing composite (P/SWCNTs/WPUs) was successfully fabricated.
- A composite with 15 wt% SWCNTs showed excellent flame retardancy (4.6 cm damage length, 34.1% LOI).
- Superior electrical conductivity (4.52 S cm⁻¹) and EMI shielding (21.8 dB) were achieved, with reflection dominating over absorption.
- Excellent EMI shielding durability was observed after 1000 bending cycles (1.8% reduction).
Conclusions
- The developed P/SWCNTs/WPUs exhibit promising flame retardant and EMI shielding properties for building applications.
- The study highlights the potential of SWCNTs as effective fillers in polymers for advanced functional materials.
- This research offers new insights into utilizing SWCNTs in flame-retardant and EMI-shielding polymers for construction.
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