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- W4283066125 endingPage "110035" @default.
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- W4283066125 abstract "Fire safety and environmental friendliness are the two key factors for the industrial application of polymer-based composites; hence, highly efficient and halogen-free flame-retarding polymer composites have been developed to achieve the above attributes. In the present work, halogen-free flame retardant Co-PDA-APP was prepared by modifying the surface of ammonium polyphosphate (APP) with dopamine (DA) and cobalt ions (Co) to enhance the fire safety of thermoplastic polyurethane elastomer (TPU). When only 3 wt% of Co-PDA-APP was added, the limiting oxygen index (LOI) reached to 25% and passed the V-0 rating in UL-94 test. The peak of heat release rate (PHRR) and peak of smoke production rate (PSPR) decreased by 66.0% and 76.4% comparing to the relative values of neat TPU. Moreover, thermogravimetry Fourier-transform infrared and Raman spectroscopy were carried out to investigate the flame-retardant mechanism of Co-PDA-APP in the TPU composite. The intumescent flame-retardant mechanism was found to be dominant, and APP, PDA, and Co promoted the formation of a physical barrier and enhanced the fire safety of the TPU composite. Furthermore, the tensile strength was 24.4 MPa, which was preserved at a high level comparing to that of TPU/APP3 composites." @default.
- W4283066125 created "2022-06-19" @default.
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- W4283066125 date "2022-08-01" @default.
- W4283066125 modified "2023-10-01" @default.
- W4283066125 title "Cobalt ions loaded polydopamine nanospheres to construct ammonium polyphosphate for the improvement of flame retardancy of thermoplastic polyurethane elastomer" @default.
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- W4283066125 doi "https://doi.org/10.1016/j.polymdegradstab.2022.110035" @default.
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