Research on Properties of PP/GF 3D Printing Materials Based on FDM
Glass fiber(GF),polypropylene(PP),nylon 6(PA6)were used to prepare the PP/GF composite.PP/GF composite printout(PP/GF printout)was prepared by self-developed industrial fused deposition modeling(FDM)equipment.The effects of GF type,PA6 and ethylene bis stearamide(EBS)content,printed shape characteristics on tensile properties and bending properties of PP/GF printouts were studied.The results show that PP/GF printouts with truncated GF have better mechanical properties than those with continuous GF.When the mass fraction of PA6 is 10.0%,the tensile strength and bending strength of PP/GF printouts are increased by 32.76%and 24.32%respectively compared with those of PP/GF printouts without PA6.The addition of EBS can improve the surface roughness of the composite and the stability of the extrusion amount during the printing process,but it is disadvantageous to mechanical properties of PP/GF printout.The tensile strength and bending strength of PP/GF printout decrease with the increase of the number of cross-section edges when the cross-section edge length and printing rate remain constant.
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