Interfacial performance and fracture patterns of 3D printed continuous carbon fiber with sizing reinforced PA6 composites
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Interfacial performance and fracture patterns of 3D printed continuous carbon fiber with sizing reinforced PA6 composites
- 发表刊物：
- Composite Part A
- 摘要：
- 3D printing of continuous fiber reinforced thermoplastic composites (CFRTPCs) have drawn increasing interests due to the simple forming process, low cost and capability to produce complex structure. Sizing usually acts as a link between reinforcing fiber and matrix to improve the interfacial adhesion and thus achieve excellent mechanical performance. A carbon fiber sizing procedure was proposed and utilized in the 3D printing process of continuous carbon fiber reinforced PA6 composites. The sized carbon fiber (SCF) reinforced PA6 (SCF/PA6) exhibited 42.2% higher interlaminar shear strength (ILSS) than that of virgin carbon fiber (VCF) reinforced PA6 (VCF/PA6). The evolution of interfacial performance and fracture patterns was systematically studied. Weak bonding interfaces with fiber pull-out were always observed in VCF/PA6 specimens. Overstrong bonding interfaces with fiber cut-off arose in SCF/PA6 due to the excessive forming pressure. They were both detrimental to stress transfer and reduced the flexural strength of 3D printed composites. Moderate bonding interfaces with limited fiber pull-out in SCF/PA6 under decent forming pressure achieved maximum 82% and 246% increasement in flexural strength and modulus respectively. The interface optimization strategy for 3D printed CFRTPCs was set up, which could speed up the technological progress for practical industrial applications.
- 合写作者：
- Tengfei Liua, Xiaoyong Tiana,*, Manyu Zhanga, Abliz Dilmurata,b, Dichen Lia, Ger
- 是否译文：
- 否
- 发表时间：
- 2018-09-01