
Study on Flame Resistant of Fused Deposition 3D Printed Polyvinylidene Fluoride Composites
GONG Yu-mei, XU Yan, TUO Xiao-hang
Study on Flame Resistant of Fused Deposition 3D Printed Polyvinylidene Fluoride Composites
Research and development of 3D printing consumables with high efficiency and flame resistance is an important topic in additive manufacturing. Polyvinylidene fluoride (PVDF) was used as the flame resistant matrix of 3D printing consumables, and polytetrafluoroethylene (PTFE), melamine polyphosphate (MPP) and triphenyl phosphate (TPP) were used as flame retardants. The high-efficiency flame resistant composites for 3D printing were successfully prepared by melt deposition molding method. The combustibility, thermal properties, and mechanical properties of PVDF matrix composites were comprehensively analyzed. The results show that MPP and TPP show a synergistic effect in enhancing the flame retardancy of 3D printed PVDF matrix composites, and the limiting oxygen index (LOI) is increased from 49.10% to 54.22%. In addition, the processability, thermal conductivity, and heat resistance of 3D printing composites are optimized by adding three flame retardants. Finally, the three-point bending properties of 3D printed composites are statistically evaluated by the Taguchi method, and it is found that reducing the amount of TPP is helpful to improve mechanical properties of materials.
Polyvinylidene fluoride / Flame resistance / 3D printing / Taguchi method
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