轮胎模具F-DLC涂层的制备及性能

Preparation of Fluorine-Containing Diamond-Like Carbon Coating for Tire Mold and Evaluation of Its Properties

为探究高性能轮胎模具F-DLC涂层的应用前景,提高轮胎模具内表面的疏水性、耐磨减摩性,采用等离子体增强化学气相沉积法在35钢基体上制备F-DLC涂层。利用Raman光谱仪与原子力显微镜对其结构与表面形貌进行了表征;利用接触角测量仪测量涂层的疏水角;另外,利用端面摩擦磨损试验机对涂层摩擦磨损性能进行了研究。结果表明:涂层内应力小、表面平整、颗粒均匀;涂层疏水角为98.54°,疏水性好;在140℃的试验温度下,摩擦系数低至0.271;纳米硬度为15.85 GPa,弹性模量为110.5 GPa。F-DLC涂层优异的性能可以有效提高轮胎模具脱模、抗粘胶的工作性能,为制造高质量的轮胎模具提供了一种可行的方案。

In order to explore the application prospect of fluorine-containing diamond-like carbon（ F-DLC ） coating for tire mold with the high performance, and improve the hydrophobicity and tribological properties of the inner surface of tire mold, F- DLC coating was prepared on 35 steel suhstrate by plasma enhanced chemical vapor deposition. The structure and surface morphology of prepared F-DLC thin films were characterized with Raman spectrometer and atomic force microscope. Angle of coating was measured using hydrophobic contact angle instrument. In addition, the tribological properties of the coating were analyzed by using the end-face friction-abrasion testing machine. Results showed that the coating had small internal stress and smooth surface with uniform particles. The hydrophobicity of the coating was 98.54°, presenting good hydrophobic property of coating. At 140 ℃, the friction coefficient was lower than 0.271. Furthermore, the nano hardness was 15.85 GPa, and the modulus of elasticity was 110.5 GPa. Therefore, the excellent performance of F-DLC coating could effectively improve the release and anti- viscose performance of tire mold, which provided a feasible solution for manufacturing high quality tire mold.