Prepreg Preparation and 3D Printing of Continuous Carbon Fiber Reinforced Nylon Composite

TIAN Xiaoyong; ZHANG Yayuan; LIU Tengfei; LI Dichen

doi:10.16080/j.issn1671-833x.2021.15.024

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Prepreg Preparation and 3D Printing of Continuous Carbon Fiber Reinforced Nylon Composite

更新时间：2025-10-30

- Prepreg Preparation and 3D Printing of Continuous Carbon Fiber Reinforced Nylon Composite
- Aeronautical Manufacturing Technology Vol. 64, Issue 15, Pages: 24-33(2021)
- 作者机构：
  
  西安交通大学,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2021.15.024
  CLC：
- Published：2021
- 稿件说明：
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田小永，张亚园，刘腾飞，李涤尘. 连续碳纤维增强尼龙复合材料预浸丝制备与 3D 打印性能研究[J]. 航空制造技术, 2021, 64(15): 24-33.

TIAN Xiaoyong, ZHANG Yayuan, LIU Tengfei, LI Dichen. Prepreg Preparation and 3D Printing of Continuous Carbon Fiber Reinforced Nylon Composite. Aeronautical Manufacturing Technology, 2021, 64(15): 24-33.
田小永，张亚园，刘腾飞，李涤尘. 连续碳纤维增强尼龙复合材料预浸丝制备与 3D 打印性能研究[J]. 航空制造技术, 2021, 64(15): 24-33. DOI： 10.16080/j.issn1671-833x.2021.15.024.

TIAN Xiaoyong, ZHANG Yayuan, LIU Tengfei, LI Dichen. Prepreg Preparation and 3D Printing of Continuous Carbon Fiber Reinforced Nylon Composite. Aeronautical Manufacturing Technology, 2021, 64(15): 24-33. DOI： 10.16080/j.issn1671-833x.2021.15.024.

摘要

为了提升连续纤维增强热塑性复合材料（CFRTPCs）3D 打印技术中树脂对纤维的浸渍能力，实现良好浸渍界面结合性能，利用自主研发的熔融浸渍纤维预处理装置进行碳纤维增强尼龙预浸丝制备，并以预浸丝为原材料进行复合材料 3D 打印研究。研究了浸渍过程与挤出成型过程中关键工艺参数对预浸丝及复合材料性能的影响。结果表明，经充分浸渍的预浸丝极限拉力和拉伸强度分别为 118.2N 和 813.9MPa ；当扫描间距为 1.5mm，分层厚度为 0.1mm 时，拉伸强度和模量分别为 558MPa 和 56GPa ；利用微米 X 射线三维成像系统测得复合材料的孔隙率约为 0.15%；准正交各向同性纤维铺层结构改善了复合材料的抗冲击性，能够达到的峰值载荷约为 4.63kN。

Abstract

In order to improve the impregnation ability of resin to fiber in continuous fiber reinforced thermoplastic composites (CFRTPCs) 3D printing technology and realize good impregnation interface bonding performance

a new technology of continuous fiber reinforced thermoplastic composite pre-impregnation 3D printing was proposed. The 1K carbon fiber reinforced nylon (CCF/PA12) re–impregnation filament was prepared using the self-developed meltimpregnation fiber pretreatment equipment

and then used for the 3D printed composites as raw material. The effects of key process parameters during impregnation and 3D printing were studied. The results show that the ultimate tensile force and tensile strength for fully impregneted prepreg filaments are 118.2N and 813.9MPa respectively. When the scanning spacing is 1.5mm

the delamination thickness is 0.1mm

the tensile strength and modulus of 1K–CCF/PA12 composites are 558MPa and 56GPa respectively. The porosity of the composites measured by micro X–ray 3D imaging system is about 0.15%. The [0/45/90/–45]10 laminates improve the impact resistance and can achieve the peak load of about 4.63kN.

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