Development of thermoplastic vulcanizates based on polypropylene/ethylene propylene diene monomer for prototyping by Fused Filament Fabrication
Development of thermoplastic vulcanizates based on polypropylene/ethylene propylene diene monomer for prototyping by Fused Filament Fabrication
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DOI：
10.1016/j.polymer.2023.125839
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发表时间：
2023-03
期刊：
影响因子：
4.6
通讯作者：
J. Innes;B. Shriky;D. Nocita;G. Thompson;P. Coates;B. Whiteside;A. Kelly;M. Hebda
中科院分区：
文献类型：
--
作者：
J. Innes;B. Shriky;D. Nocita;G. Thompson;P. Coates;B. Whiteside;A. Kelly;M. Hebda
本文演示了如何通过修改配方和熔丝制造（FFF）工艺来3D打印热塑性硫化橡胶（TPV）。以聚丙烯（PP）/三元乙丙橡胶（EPDM）共混物为基体，对新型FFF长丝进行了打印和表征。这些TPV长丝的开发通过改变热塑性/橡胶相的等级来实现广泛的性能。热塑性硫化橡胶广泛用于汽车工业等，可打印长丝可用于原型制作和定制部件的生产。鉴于TPV作为热固性橡胶的替代品日益突出，这些材料的FFF被认为在工业上是有益的。当在印刷方向上测量时，新制备的TPV的拉伸强度为20-30 MPa，断裂伸长率为700-1100%。测量拉伸性能（与印刷方向成0°和90°）、层间粘附力和Micro-CT，并与纯PP和PLA进行比较。
This article demonstrates how thermoplastic vulcanizates (TPVs) can be 3D printed by modifying their formulation and the Fused Filament Fabrication (FFF) process. Novel FFF filaments based on polypropylene (PP)/ethylene propylene diene monomer (EPDM) blends were printed and characterized. The development of these TPV filaments allows a broad range of properties by varying the grades of the thermoplastic/rubber phases.Thermoplastic vulcanizates are widely used in the automotive industry, amongst others, and a printable filament could have applications in both prototyping and production of bespoke parts. Given the increasing prominence of TPVs, as replacement for thermoset rubbers, FFF of these materials is considered industrially beneficial. The newly prepared TPVs possessed tensile strength of ∼20–30 MPa and elongation at break ∼700–1100% when measured in the direction of printing. Tensile properties (at 0° and 90° to the printing direction), interlayer adhesion, and Micro-CT were measured and compared with neat PP and PLA.