用MM-200型摩擦磨损试验机考察了辐照对酚酞聚芳醚酮（PEK-C）摩擦磨损性能的影响。结果表明辐照可改善PAEK-c的摩擦磨损性能。当辐照剂量从5×104 Gy升到1×107Gy时，PAEK-C摩擦系数和磨损率均降低红外光谱与XPS分析表明，PAEK-C样品在辐照后无明显的变化。电镜分析表明，未辐照样品的磨屑大于辐照后样品的磨屑，未辐照样品的磨损表面犁沟较明显，而辐照后样品的磨损表面无犁沟槽，且表面比较光滑。

Polymer blending is a very important and widely used method for the modification of polymer materials. The mechanical properties, miscibility and modification mechanisms of blends have been investigated earlier. However, studies of their tribological behavior have been few, and little attention has been paid to the friction and wear mechanisms of polymer blends. In this paper, the structure, mechanical and tribological properties of polyamide 66 (PA66) and polyphenylene sulfide (PPS) blends were studied. It was found that the PA66/PPS blends had a two-phase structure; the blend with 30 vol.% PPS exhibited the best general mechanical properties; 80 vol.% PA66-20 vol.% PPS blend had the lowest wear. Differential scanning calorimetry (DSC) and Fourier transform infrared spectrometry (FT-IR) analyses were carried out and the transfer films on the mating steel surfaces were investigated by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). The results indicated that the crystalline structure of PA66, PPS and PA66/PPS blends changed due to sliding and tribochemical reactions occurred with the PA66 and the PA66 phases in blends. The thermal control of friction model is applicable to this blend system, i.e. the friction coefficient of PA66/PPS blends depended on the PA66 component with lower melting point, while the wear properties were governed by the adhesive ability between the PPS and the counterface.

The friction properties of poly (acrylic acid)(PAAc) hydrogel have been studied under low loads using a ball-on-plate friction tester. And the influences of atmospheres, load, water contents of the polymers and its surface morph have been investigated. It is found that the friction coefficient of hydrogels is obviously lower in water than in air. The friction coefficient of PAAc hydrogel decreases as the load increases, and the effect is more conspicuous under low load. The friction property of polymer hydrogels depends on the water content of it, namely, the higher the water content, the lower the friction coefficient. The dimpled surface of PAAc hydrogel can effectively lead to a low friction coefficient. There is the balance of mechanical contact and water contact with slider surface is important for hydrogel lubrication.