材料工程2024，Vol.52Issue(4)：218-224,7.DOI:10.11868/j.issn.1001-4381.2022.000122
面向3D打印应用的PP/PET共混线材制备和性能
Preparation and properties of PP/PET filament blends for 3 D printing applications
摘要
Abstract
In order to expand the application of polypropylene(PP)in 3D printing technology and improve its mechanical properties,PP/polyethylene terephthalate(PET)blend filaments were prepared by extruding PP with PET using melt blending.The rheological behavior,crystallization structure,melting and crystallization behavior,microstructure,mechanical properties of the filament blends and 3D printed samples with different mixing ratios of PP,PET were analyzed.The results show that the viscosity of PP/PET blends decreases with the increase of shear rate and exhibits shear thinning behavior.PET acts as a nucleating agent and does not change the crystal shape of PP during PP crystallization.The melting temperature of PP is about 150℃,and the crystallization temperature increases with the increase of PET concentrations.The PP matrix and PET dispersed phase have obvious"sea-island"structure,in which PET is the"island"phase,with a diameter of 2-5 μm.With the increase of PET concentrations,the tensile strength of filament blends is improved.Simultaneously,the tensile strength and the impact strength of the 3D printed samples is improved.However,the mechanical properties of 3D printed samples are generally lower than those of filament blends due to interlayer interaction.关键词
聚丙烯/共混改性/力学性能/3D打印Key words
polypropylene/blending modification/mechanical property/3D printing分类
化学化工引用本文复制引用
王重阳,王胜法,权慧欣,王艳,曹帅,豆保平,赵新宇,邱帅,王绎苏,张鸿,郭静..面向3D打印应用的PP/PET共混线材制备和性能[J].材料工程,2024,52(4):218-224,7.基金项目
国家自然科学基金资助(51503023,61772104) （51503023,61772104）
高分子材料工程国家重点实验室(四川大学)开放课题基金资助(sklpme2021-05-04) （四川大学）
辽宁省教育厅面上项目(LJKZ0533) （LJKZ0533）
