Preparation and Characterization of High-Strength and High-Modulus Multi-Walled Carbon Nanotube/Hydroxyapatite/Carbon Fiber/Polyetheretherketone Composites

Author:

Liu Lijian1,Zhang Yongkang1,Ma Shaobo1,Zhu Shouxiao1,Wu Shuxuan1,Wei Bin1,Yang Guang1

Affiliation:

1. College of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

Abstract

The materials currently used for bone prostheses are mainly metals such as titanium alloy. Compared with human cortical bone, traditional metals exhibit high elastic moduli, which may lead to stress shielding. In contrast, the mechanical strength and elastic modulus of polyetheretherketone are slightly lower than those of human bone. In this study, we utilize multi-component co-modification in order to improve the mechanical properties of polyetheretherketone materials. Firstly, we blended three types of materials: multi-walled carbon nanotubes, nanohydroxyapatite, and carbon fibers. Then, the blended materials were used to reinforce polyetheretherketone, and the preparation of the multi-walled carbon nanotubes/nanohydroxyapatite/carbon fibers was described in detail. After the contact angle was determined, SEM, thermogravimetric analysis, and various tests were conducted on the ternary composites. Ball milling co-mingling technology was used to prepare tetrad composite specimens for tensile and compression experiments, a finite element model of the tetrad composite tensile and compression specimens was established, and the structural stresses of the specimens were analyzed under the specified loads. The experimental results show that the surface roughness of carbon fiber increased, and the multi-walled carbon nanotube/nanohydroxyapatite/carbon fiber/polyetheretherketone quaternary composites were well optimized in terms of strength and elastic modulus, which broadens the application field of polyetheretherketone materials.

Funder

Youth Fund Project of the Science and Technology Research Project of Colleges and Universities in Hebei Province

Natural Science Foundation of Hebei Province, the Beijing–Tianjin–Hebei Basic Research Cooperation Project

Hebei Provincial Department of Human Resources and Social Security, Hebei Province Three Talent Funding Project

Publisher

MDPI AG

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