通过拉伸、弯曲、冲击、摩擦磨损试验测试了不同含量的碳纤维对聚甲醛(POM)自润滑材料力学性能和摩擦磨损性能的影响,并用扫描电子显微镜观察了拉伸试样断口和摩擦磨损试样表面的微观形貌。结果表明:当碳纤维含量由0、17%增加到35%,POM自润滑材料的拉伸强度和弯曲强度逐渐增加,冲击强度逐渐降低;POM自润滑材料45钢干摩擦试样的摩擦系数逐渐降低,材料的体积磨损率逐渐增加。
The effects of different carbon fiber(CF) content on the mechanical,friction and wear properties of polyoxymethylene (POM) self-lubricating materials were tested by tensile,bending,impact,friction and wear tests.The fracture of tensile specimens and the microscopic morphology of the surface of friction and wear specimens were observed by scanning electron microscopy.The results shown that when the CF content increased from 0,17% to 35%,the tensile and flexural strengthes of POM materials increased gradually.The impact strength decreased gradually.The dry friction coefficient of friction specimens of POM materials and steel 45 decreased gradually.At the same time,the volume wear rate of the material gradually increased.
[1] Shen X J,Liu Y F,Cao L.Numerical simulation of sliding wear for self-lubricating spherical plain bearings[J].Material Technology,2012(1):8-12.
[2] Zhou Shaofeng,Zhang Qiaoxin,Wu Chaoqun,et al.Effect of carbon fiber reinforcement on the mechanical and tribological properties of polyamide6/polyphenylene sulfide composites[J].Materials and Design,2012,44(6):493-499.
[3] Friedrich K.Polymer composite for tribology applications[J].Advanced Industrial and Engineering Polymer Reasearch,2018,10:10-16.
[4] Sun L H,Yang Z G,Li X H.Study on the friction and wear behavior of POM/Al2O3 nanocomposites[J].Wear,2008,264(7-8):693-700.
[15] Kyratsi T,Chrissafis K,Wachter J,et al.KSb5S8:a wide bandgap phase-change material for ultra high density rewritable information storage[J].Adv Mater,2003,15:1428-1431.
[16] Wachter J B,Chrissafis K,Petkov V,et al.Local structure and influence of bonding on the phase-change behavior of the chalcogenide compounds K1-xRbxSb5S8[J].J Solid State Chem,2007,180:420-431.
[17] Kashyap J,Ashraf S M,Riaz U.Highlyefficient photocatalytic degradation of amido black 10B dye using poly-carbazole decorated TiO2nano-hybrids[J].ACS Omega,2017,2:8354-8365.
[18] Zhuang H L,Hennig R G.Theoretical perspective of photocatalytic porperties of single layer SnS2[J].Phys Rev B,2013,88:115314-115318.
[19] Li Y Y,Yang Q M,Wang Z M,et al.Rapid fabrication of SnO2 nanoparticle photocatalyst:computational understanding and photocatalytic degradation of organic dye[J].Inorg Chem Front,2018,5:3005-3014.
[20] Niu S Y,Zhang R Y,Zhang Z Y,et al.In situ construction of the BiOCl/Bi2Ti2O7 heterojunction with enhanced visible light photocatalytic activity[J].Inorg Chem Front,2019,6:791-198.
[21] Li M Y,Tang Y B,Shi W L,et al.Design of visible light response core shell Fe2O3/CuBi2O4 heterojunctions with enhanced photocatalytic activity towards the degradation of tetracycline:Z-scheme photocatalytic mechanism insight[J].Inorg Chem Front,2018,5:3148-3154.