The aim of this work was to assess whether with high amounts of nano-silica filled cured resins release nano-particles upon their abrasion, as this could form an occupational health risk and require specific safety measures.

A standardised abrasion stress method involving a Taber linear abrasion apparatus (Model 5750) has been applied to the filled polymer samples. This linear abrasion apparatus simulates the mechanical solicitation, i.e. abrasion. Various particle size measurement techniques were applied to assess the size distribution and the quantity of particles released.

Observations of airborne particle from abrasion tests are consistent with TEM characterization of the nanomaterials before any tests. Abrasions of both samples (called here ‘1’ and ‘2’) gave rise to emissions. For sample 1, a few ‘dust’ particles and micronic particles are observed. For sample 2, despite a track on the sample, no detectable micronic particles and very few ‘dust’, particles are detected. As a result, we can state there were effective abrasions which gave rise to a low emission (sample 1) and a very low emission (sample 2) under the detection limits of particle sizing and counting, for the last case.

The emission of particles upon Taber test abrasion is extremely low (less than 8 particles per cm³) and for one of the samples at the level of the detection limit. Moreover, the size of these particles is generally larger than 100 nm.

这项工作的目的是评估用大量纳米二氧化硅填充的固化树脂是否会在磨损时释放出纳米颗粒，因为这会形成职业健康风险，并需要采取特定的安全措施。

涉及泰伯线性磨损设备（5750型）的标准化磨损应力方法已应用于填充的聚合物样品。该线性磨蚀设备模拟机械拉拔，即磨蚀。应用了各种粒度测量技术来评估粒度分布和释放的颗粒数量。

磨损试验中观察到的空气传播颗粒与任何试验之前对纳米材料的TEM表征一致。两种样品的擦伤（在这里称为“ 1”和“ 2”）都会引起排放。对于样品1，观察到一些“灰尘”颗粒和微子颗粒。对于样品2，尽管在样品上有痕迹，但未检测到可检测的微子颗粒，并且几乎没有检测到“尘埃”颗粒。结果，我们可以说，在最后一种情况下，在颗粒大小和计数的检测极限下，存在有效的磨损，导致低排放（样品1）和极低排放（样品2）。

泰伯测试磨损后的颗粒排放极低（每cm ³少于8个颗粒），并且其中一个样品处于检测极限水平。而且，这些颗粒的尺寸通常大于100nm。