碳纤维增强聚醚醚酮复合材料骨诱导修复植入体制备及微动摩擦学性能

薛成龙; 王守仁; 王高琦; 张明远; 温道胜

doi:10.13801/j.cnki.fhclxb.20210911.001

碳纤维增强聚醚醚酮复合材料骨诱导修复植入体制备及微动摩擦学性能

doi: 10.13801/j.cnki.fhclxb.20210911.001

济南大学　机械工程学院，济南 250022

基金项目: 国家自然科学基金(51872122)；山东省自然科学基金重大基础研究项目(ZR2020ZD06)；山东省自然科学基金重点项目(ZR2020KE062)；泰山学者工程专项资助(ts201511040)；济南市自主创新团队资助项目(2019GXRC012)

详细信息

通讯作者:
王守仁，博士，教授，博士生导师，研究方向为金属表面处理工艺，金属基、聚合物基复合材料　 E-mail：me_wangsr@ujn.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2021-07-06
- 修回日期: 2021-08-16
- 录用日期: 2021-08-27
- 网络出版日期: 2021-09-13
- 刊出日期: 2022-07-30

Preparation and fretting tribological properties of carbon fiber reinforced polyetheretherketone composite osteoinductive repair implants

School of Mechanical Engineering, University of Jinan, Jinan 250022, China

摘要

摘要: 引起植入体无菌松动的主要原因是植入体与骨组织之间的微动磨损。通过层叠法制备了碳纤维(CF)增强聚醚醚酮(PEEK)复合材料，在模拟体温37℃、模拟体液(SBF)润滑条件下，探究CF/PEEK复合材料的基本力学性能和截面微动摩擦学性能。通过改变法向载荷和位移幅值，建立了摩擦力(F_t)-位移幅值(D)曲线、微动运行工况图和摩擦系数曲线，通过三维白光干涉仪、扫描电子显微镜(SEM)对CF/PEEK复合材料进行磨损机制探究。结果表明：随着法向载荷的减少和位移幅值的增加，微动由部分滑移区、混合区向滑移区转变。摩擦系数曲线整体较为平稳，摩擦系数随着法向载荷的增加而降低，随着位移幅值的增加而增加，磨损体积随着载荷和位移幅值的增加而增加。且CF/PEEK复合材料截面也有较好的微动性能，磨损机制主要为磨粒磨损和疲劳磨损。通过对复合材料截面摩擦学特性分析，为CF/PEEK复合材料替代金属植入体提供一定的理论基础。
- 碳纤维 /
- 薄膜 /
- 复合材料 /
- 微动磨损 /
- 编织 /
- 聚醚醚酮 /
- 植入物
Abstract: The main reason for the aseptic loosening of the implant is the fretting wear between the implant and the bone tissue. A carbon fiber (CF) reinforced polyetheretherketone (PEEK) composite material was prepared by a layered method. Under simulated body temperature of 37℃ and simulated body fluid (SBF) lubrication conditions, the basic mechanical properties and the fretting tribological properties of the section of CF/PEEK composites were explored. By changing the normal load and displacement amplitude, the frictional force(F_t)-displacement (D) curve, the fretting operating condition diagram and the friction coefficient curve were established. And the wear mechanism of the CF/PEEK composite material was explored through a three-dimensional white light interferometer and a scanning electron microscope (SEM). The results show that with the decrease of the normal load and the increase of the displacement amplitude, the fretting changes from partial slip regime and mixed regime to slip regime. The overall friction coefficient curve is relatively stable. The friction coefficient gradually decreases with the increase of normal load and increases with the rise of displacement amplitude. The wear volume increases with load and displacement amplitude increases. In addition, CF/PEEK composites have better fretting properties, and the main wear mechanisms are abrasive wear and fatigue wear. The analysis of the tribological characteristics of composite materials provides a specific theoretical basis for CF/PEEK composite materials to replace metal implants.
- carbon fiber /
- thin films /
- composites /
- fretting wear /
- weaving /
- polyetheretherketone /
- implant

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图 1 碳纤维取向为(0°/90°)的碳纤维增强聚醚醚酮(CF/PEEK)复合材料排布方法: (a)碳纤维织物；(b)编织原理图；(c)纤维层叠示意图

Figure 1. Arrangement method of carbon fiber reinforced polyetheretherketone (CF/PEEK) composite material with carbon fiber orientation (0°/90°): (a) Carbon fiber woven fabric; (b) Weaving principle diagram; (c) Schematic diagram of fiber stacking

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图 2 (a)真空热压烧结炉设备原理图；(b)模具原理图

Figure 2. (a) Schematic diagram of vacuum hot pressing sintering furnace equipment; (b) Mould drawing

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图 3 RTEC-MFT 5000微动设备(a)和原理图(b)

Figure 3. RTEC-MFT 5000 fretting friction equipment (a) and schematic diagram (b)

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图 4 PEEK、CF和CF/PEEK复合材料的XRD图谱

Figure 4. XRD patterns of PEEK, CF and CF/PEEK composite material

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图 5 CF/PEEK复合材料断面SEM图像

Figure 5. SEM images of cross section of CF/PEEK composite material

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图 6 CF/PEEK复合材料在不同载荷和位移幅值条件下的F_t-D曲线

Figure 6. F_t-D curves of CF/PEEK composite material under different load and displacement amplitude conditions

D—Displacement amplitude

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图 7 CF/PEEK复合材料运行工况微动图

Figure 7. Running condition for fretting map of CF/PEEK composite material

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图 8 CF/PEEK复合材料摩擦系数曲线((a)~(c))和平均摩擦系数图(d)

Figure 8. Friction coefficient curves ((a)-(c)) and average friction coefficient graph (d) of CF/PEEK composite material

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图 9 CF/PEEK复合材料在不同载荷和位移幅值的三维形貌

Figure 9. 3D morphology of CF/PEEK composite material with different load and displacement amplitude

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图 10 CF/PEEK复合材料在不同载荷和位移幅值的二维磨痕轮廓图

Figure 10. 2D scratch profile of CF/PEEK composite material with different load and displacement amplitude

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图 11 CF/PEEK复合材料在不同载荷和位移幅值的磨损体积

Figure 11. Wear volume of CF/PEEK composite material with different load and displacement amplitude

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图 12 CF/PEEK复合材料在不同载荷和位移幅值的SEM图像

Figure 12. SEM images of CF/PEEK composite material under different loads and displacement amplitudes

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图 13 CF/PEEK复合材料的磨损机制示意图

Figure 13. Wear mechanism of CF/PEEK composites

SBF—Simulated body fluid

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表 1 模拟体液溶液离子浓度

Table 1. Concentration of ions in the solution of simulated body fluid mmol/L

Formulation	Na⁺	K⁺	Mg²⁺	Ca²⁺	Cl⁻	HCO₃⁻	HPO₄²⁻	SO₄²⁻
SBF	142.0	5.0	1.5	2.5	103.0	10.0	1.0	0.5
Blood plasma	142.0	5.0	1.5	2.5	103.0	27.0	1.0	0.5

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表 2 CF/PEEK复合材料微动磨损试验主要参数

Table 2. Experiment parameters of fretting wear of CF/PEEK composite

Experimental parameters	CF/PEEK
Tangential force/N	50, 100, 150
Displacement amplitude/μm	20, 60, 100
Frequency/Hz	2

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表 3 CF/PEEK复合材料和Ti₆Al₄V材料的力学性能

Table 3. Mechanical properties of CF/PEEK composite material and Ti₆Al₄V material

Sample	Density /(g·cm⁻³)	Hardness	Tensile strength/MPa	Bend strength/MPa
CF/PEEK	1.56	120 HRR	880	670
Ti₆Al₄V	4.5	260 HV	895	993

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