Preparation and properties of high-performance surface modified nano-red phosphorus-polyvinyl alcohol composite films
In this paper,red phosphorus nanoparticles(NRP@PEG)were prepared by a simple and low-toxic amine dissolution method using red phosphorus(RP),diethylenetriamine(DETA)and polyethylene glycol(PEG)as raw materials.Flame retardant polyvinyl alcohol composite films(PVA-NRP@PEG)were prepared by introducing NRP@PEG into the PVA matrix using the solvent mixing method.Thermogravimetric analysis showed that adding 2.0 wt％NRP@PEG increased the carbon residue content by 195％compared with PVA.The microcalorimeter(MCC)results demonstrated that adding NRP@PEG can significantly decrease the heat release capacity and total heat release value,effectively reducing the heat release during combustion and enhancing PVA's flame retardancy.Moreover,PVA-NRP@PEG film exhibits excellent light transmittance and mechanical properties,with a 76.7％increase in tensile strength when incorporating 1.0 wt％NRP@PEG while maintaining PVA toughness.In addition,scanning electron microscopy(SEM)was used to study the flame retardant mechanism of the condensed phase.
Red phosphorusNanoparticlesComposite materialThermal performanceFlame retardancy
NETL
NSTL
万方数据
