Nanosized Sb2O3 flame retardant with an average diameter of 30 nm was prep ared by liquid phase homogeneous precipitation method with microwave heating. Th e preparation conditions were studied and optimized. Nanosize...Nanosized Sb2O3 flame retardant with an average diameter of 30 nm was prep ared by liquid phase homogeneous precipitation method with microwave heating. Th e preparation conditions were studied and optimized. Nanosized Sb2O3 has been ch aracterized by means of XRD, TEM, FTIR. FTIR results show that IR absorption of nanosized Sb2O3 is red-shifted and strengthened. Microwave can promote the forma tion of nanosized Sb2O3. The concentration of urea affects particle size greatly . The nanosized Sb2O3 was applied to flame retarding polyethylene (PE)/ethylene-vinyl acetate copolymer (EVA) foams. The mechanical properties and flame retarda ncy of the flame retarding PE/EVA foams were much improved.展开更多
Nanosized Sb2O3 flame retardant was prepared by homogeneous precipitat ion in ultrasonic field. The preparation conditions were studied and optimized. Nanosized Sb2O3 was characterized by means of powder X-ray diffrac...Nanosized Sb2O3 flame retardant was prepared by homogeneous precipitat ion in ultrasonic field. The preparation conditions were studied and optimized. Nanosized Sb2O3 was characterized by means of powder X-ray diffraction (XRD), tr ansmission electron microscopy (TEM) and the specific surface area. XRD, TEM res ults indicate that the crystalline form of nanosized Sb2O3 is face-centered cubi c with an average size of 15 nm. The application of ultrasonic wave is to decrea se the particle size of nano-Sb2O3 and to improve its dispersivity. The mechanic al properties and flame retardancy of the flame retarding polyethylene(PE) foams were much improved with the application of nano-Sb2O3.展开更多
文摘Nanosized Sb2O3 flame retardant with an average diameter of 30 nm was prep ared by liquid phase homogeneous precipitation method with microwave heating. Th e preparation conditions were studied and optimized. Nanosized Sb2O3 has been ch aracterized by means of XRD, TEM, FTIR. FTIR results show that IR absorption of nanosized Sb2O3 is red-shifted and strengthened. Microwave can promote the forma tion of nanosized Sb2O3. The concentration of urea affects particle size greatly . The nanosized Sb2O3 was applied to flame retarding polyethylene (PE)/ethylene-vinyl acetate copolymer (EVA) foams. The mechanical properties and flame retarda ncy of the flame retarding PE/EVA foams were much improved.
文摘Nanosized Sb2O3 flame retardant was prepared by homogeneous precipitat ion in ultrasonic field. The preparation conditions were studied and optimized. Nanosized Sb2O3 was characterized by means of powder X-ray diffraction (XRD), tr ansmission electron microscopy (TEM) and the specific surface area. XRD, TEM res ults indicate that the crystalline form of nanosized Sb2O3 is face-centered cubi c with an average size of 15 nm. The application of ultrasonic wave is to decrea se the particle size of nano-Sb2O3 and to improve its dispersivity. The mechanic al properties and flame retardancy of the flame retarding polyethylene(PE) foams were much improved with the application of nano-Sb2O3.