Objective

The aim of this laboratory study was to analyze the influence of titanium dioxide (TiO₂) content and antagonistic material on the wear of polyetherketoneketones (PEKKs).

Methods

Twenty-four disk-shaped specimens of two PEKK materials containing either 10 wt% or 20 wt% TiO₂ particles (P10 and P20) were dynamically loaded in a chewing simulator with 49 N and additional thermal cycling (5–55 °C). Subgroups of 8 specimens each were loaded with spherical antagonists made from either steatite ceramic (St), zirconia (Zr), or the same PEKK material (P10 or P20). After 120,000, 240,000, 480,000, 840,000, and 1,200,000 loading cycles the vertical substance loss and the volume loss of the loaded specimens were evaluated using a laser scanner. Data were checked considering the normal distribution (Shapiro–Wilk test) and were inspected for significant differences by means of single factor variance analyses and post hoc pair comparison (Games-Howell test).

Results

After 1,200,000 chewing cycles, statistical analyses revealed a significant influence of the antagonistic material. A significant difference was also found between the tested PEKKs if Zr was used as the antagonist. The volume loss ranged from between 0.073 mm³ (P20-P20) and 0.228 mm³ (P10-St), and the vertical substance loss ranged between 73.71 μm (P20-P20) and 115.268 μm (P10-Zr).

Significance

The inclusion of TiO₂ particles influences the wear behavior of PEKK materials.

中文翻译：

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聚醚酮酮的磨损—二氧化钛含量和拮抗材料的影响

客观的

本实验室研究的目的是分析二氧化钛（TiO ₂）含量和拮抗材料对聚醚酮酮（PEKKs）磨损的影响。

方法

将两种包含10 wt％或20 wt％TiO ₂颗粒（P10和P20）的PEKK材料的二十四个盘状样品动态加载到咀嚼模拟器中，该咀嚼器具有49 N的温度和额外的热循环（5-55°C）。每组8个样本的亚组分别装有球形滑石，球形滑石由滑石陶瓷（St），氧化锆（Zr）或相同的PEKK材料（P10或P20）制成。在120,000、240,000、480,000、840,000和1,200,000个加载循环后，使用激光扫描仪评估了垂直方向的物质损失和所加载标本的体积损失。检查数据时考虑正态分布（Shapiro-Wilk检验），并通过单因素方差分析和事后对比较（Games-Howell检验）检查是否存在显着差异。

结果

经过1,200,000次咀嚼循环后，统计分析显示了这种拮抗物质的重大影响。如果将Zr用作拮抗剂，则在测试的PEKK之间也发现了显着差异。体积损失在0.073 mm ³（P20-P20）和0.228 mm ³（P10-St）之间，垂直物质损失在73.71μm（P20-P20）和115.268μm（P10-Zr）之间。

意义

包含TiO ₂颗粒会影响PEKK材料的磨损行为。