船舶艉轴机械密封材料摩擦磨损性能研究.pdfVIP

船舶轴机械密封材料摩擦磨损性能研究

摘要：为探究船舶舰轴机械密封用高分子材料在实际工作环境下的摩擦磨损性能，选用浇注型聚氨酯弹性体

8（CPU）、聚对苯二甲酸乙二醇酯（PET）、聚对苯二甲酸丁二酯（PBT）、玻璃纤维改性聚已二酰丁二胺复合材料8

（CF/PA46）与玻璃纤维改性聚四氟乙烯复合材料（CF/PTFE）5种材料，在载荷为0.5MPa，线速度为7m/s的工况8

8下开展摩擦磨损性能测试。结果表明：重载、高速的工况使得CPU、PET、PBT、GF/PA46材料出现了不同程度的剥人

落与犁沟，摩擦因数与磨损量较大；GF/PTFE材料仅出现一些相对轻微的撕裂和磨痕，相较于CPU、PET、PBT、8

8GF/PA46材料，CF/PTFE

8

891.7%、92.7%、88.6%、97.0%，摩擦磨损性能最优。8

关键词：舰轴机械密封；软环材料；复合材料；摩擦磨损；密封性能

88

FrictionandWearPropertiesofMechanicalSealingMaterials

forShipSternShaft

Abstract:Inordertoinvestigatethefrictionandwearpropertiesofpolymermaterialsusedformechanicalsealsofship

sternshaftsinactualworkingenvironments,fivematerials,namely,castpolyurethaneelastomer(CPU),polyethylene

terephthalate(PET),polybutyleneterephthalate(PBT),glassfibermodifiedpolyhexamethylenebutylamine(GF/PA46)

composite,andglassfibermodifiedpolytetrafluoroethylene(GF/PTFE)composite,wereselected,andtheirfrictionand

wearperformancetestswereconductedundertheloadof0.5MPaandthelinearvelocityof7m/s.Theresultsshowthat

CPU,PET,PBT,GF/PA46materialsexhibitvaryingdegreesofpeelingandfurrowingunderhighloadandhighrotational

speedconditions,resultinginlargefrictioncoefficientsandwearlosses,whileGF/PTFEcompositesonlyexhibitsomerela-

tivelyslighttearsandwearmarks,exhibitingoptimalfrictionandwearperformance.ComparedtoCPU,PET,PBT,and

GF/PA46,theaveragefrictioncoefficientofCF/PTFEisdecreasedby66.6%,80.4%,86.1%,and87.8%,respectively,

andthewearamountperunittimeisdecreasedby91.7%,92.7%,88.6%,and97.0%,respectively.Thefrictionandwear

performanceisoptimal.

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