Journal
POLYMERS
Volume 12, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/polym12071487
Keywords
black phosphorene; boron nitride; flame retardant; waterborne polyurethane
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Funding
- Cultivation Fund for Yunling (Yunnan, China) [10978195]
- Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan Province (Yunnan, China) [14058501]
- Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials (Yunnan, China) [20190002]
- Natural Science Foundation of China [21968012]
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We applied black phosphorene (BP) and hexagonal boron nitride (BN) nanosheets as flame retardants to waterborne polyurethane to fabricate a novel black phosphorus/boron nitride/waterborne polyurethane composite material. The results demonstrated that the limiting oxygen index of the flame-retarded waterborne polyurethane composite increased from 21.7% for pure waterborne polyurethane to 33.8%. The peak heat release rate and total heat release of the waterborne polyurethane composite were significantly reduced by 50.94% and 23.92%, respectively, at a flame-retardant content of only 0.4 wt%. The superior refractory performances of waterborne polyurethane composite are attributed to the synergistic effect of BP and BN in the gas phase and condensed phase. This study shows that black phosphorus-based nanocomposites have great potential to improve the fire resistance of polymers.
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