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Thermo-mechanical and tribological properties of SU-8/h-BN composite with SN150/perfluoropolyether filler
Friction ( IF 6.8 ) Pub Date : 2019-05-11 , DOI: 10.1007/s40544-019-0257-7
Anand Singh Rathaur , Jitendra K. Katiyar , Vinay Kumar Patel

In this study, SU-8 and its composites are fabricated by blending 10 wt.% hexagonal boron nitride (h-BN) fillers with/without lubricants, such as 10 wt.% base oil (SN150) and 20 wt.% perfluoropolyether (PFPE). The thickness of SU-8 and its composites coating is fabricated in the range ∼100–105 ±m. Further, SU-8 and its composites are characterized by a 3D optical profilometer, atomic force microscopy, scanning electron microscopy, a thermal gravimetric analyzer, a goniometer, a hardness tester, and an optical microscope. Under a tribology test performed at different normal loads of 2, 4, and 6 N and at a constant sliding speed of 0.28 m/s, the reduction in the initial and steady-state coefficient of friction is obtained to be ∼0.08 and ∼0.098, respectively, in comparison to SU-8 (∼0.42 and ∼0.75), and the wear resistance is enhanced by more than 103 times that of pure SU-8. Moreover, the thermal stability is improved by ∼80–120 °C, and the hardness and elastic modulus by ∼3 and ∼2 times that of pure SU-8, respectively. The SU-8 composite reinforced with 10 wt.% h-BN and 20 wt.% PFPE demonstrated the best thermo-mechanical and tribological properties with a nano-textured surface of high hydrophobicity.

中文翻译:

SN150 /全氟聚醚填料的SU-8 / h-BN复合材料的热力学和摩擦学性能

在这项研究中,SU-8及其复合材料是通过将10重量%的六方氮化硼(h-BN)填料与/不添加润滑剂(例如10重量%的基础油(SN150)和20重量%的全氟聚醚( PFPE)。SU-8及其复合涂层的厚度在〜100–105±m的范围内制造。此外,SU-8及其复合材料的特征在于3D光学轮廓仪,原子力显微镜,扫描电子显微镜,热重分析仪,测角仪,硬度计和光学显微镜。在2、4和6 N的不同法向载荷下以及在恒定滑动速度为0.28 m / s的条件下进行的摩擦学测试中,初始和稳态摩擦系数的减小分别为〜0.08和〜0.098与SU-8(分别为0.42和0.75)相比,耐磨性比纯SU-8增强了103倍以上。此外,热稳定性提高了约80-120°C,硬度和弹性模量分别提高了纯SU-8的3倍和2倍。用10%(重量)的h-BN和20%(重量)的PFPE增强的SU-8复合材料表现出最佳的热机械和摩擦学性能,并具有高疏水性的纳米织构表面。
更新日期:2019-05-11
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