研究了不同的炭化温度对层状结构受电弓滑板性能的影响。将受电弓滑板在400、600、800℃的氮气气氛中进行热处理,通过测试受电弓滑板的密度、耐温性、导电性、抗冲击性和耐磨性能,讨论了炭化温度对其性能的影响;利用SEM观察磨损表面,分析磨损机理。结果表明层状结构受电弓滑板的密度随炭化温度的升高而减小;当炭化温度高于600℃时,受电弓滑板表现出良好的耐温性。炭化提高了材料的导电性,但冲击强度和耐磨性随炭化温度的升高而降低;炭化温度较低时,受电弓滑板的磨损机制为粘着磨损为主,当炭化温度较高时,磨粒磨损和粘着磨损成为主要的磨损形式;确定最佳炭化温度为600℃,该温度下炭化处理后具有较好的综合性能,符合TB/T 1842.2-2002标准的相关规定。
The effects of carbonization temperature on properties of layered structural pantograph slide plates（LSPSP） were investigated.LSPSP were treated at 400,600,800℃ in nitrogen gas atmosphere.By testing density,heat resistance,electrical conductivity property,impact resistance and abrasive resistance of LSPSP,the effects of carbonization temperature on properties of LSPSP were investigated.The wear mechanism was discussed through examining and analyzing the worn surface with scanning electron microscope（SEM）.The results show that the density decrease when carbonization temperature increase.When the temperature is over 600℃,the temperature resistance of the resin is greatly enhanced.The electrical conductivity increases after carbonization,but its impact strength and abrasive resistance decreases with the increase of carbonization temperature.The major wear mechanism of composite is adhesion wear at low carbonization temperature,while adhesion wear and abrasive wear are the major mechanism at high temperature.The LSPSP carbonized at 600℃ have good comprehensive performances.The performance testing indicators meet the TB/T 1842.2-2002 standards.
参考文献
| [1] | S. Kubo;K. Kato .Effect of arc discharge on wear rate of Cu-impregnated carbon strip in Unlubricated sliding against Cu trolley under electric current[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,1998(2):172-178. |
| [2] | Monika Kristkova;Peter Filip;Zdenek Weiss;Rudolf Peter .Influence of metals on the phenol-formaldehyde resin degradation in friction composites[J].Polymer Degradation and Stability,2004(1):49-60. |
| [3] | S. C. Ho;J.H. Chern Lin;C.P. Ju .Effect of carbonization on mechanical and tribological behavior of a copper-phenolic-based friction material[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(3):491-502. |
| [4] | Chen, YF;Chen, ZQ;Xiao, SY;Liu, HB .A novel thermal degradation mechanism of phenol-formaldehyde type resins[J].Thermochimica Acta,2008(1/2):39-43. |
| [5] | Costa L.;Camino G.;Weil ED.;Pearce EM.;Dimontelera LR. .STRUCTURE-CHARRING RELATIONSHIP IN PHENOL-FORMALDEHYDE TYPE RESINS[J].Polymer Degradation and Stability,1997(1):23-35. |
| [6] | 钱军民,王继平,金志浩.木材陶瓷和Si粉原位反应烧结制备多孔SiC的研究[J].硅酸盐学报,2003(07):635-640. |
| [7] | 钱军民,王继平,金志浩.木材陶瓷和Si粉原位反应烧结制备多孔SiC的研究[J].硅酸盐学报,2003(07):635-640. |
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