第27卷第6期粉末冶金材料科学与工程2022年12月Vol.27No.6MaterialsScienceandEngineeringofPowderMetallurgyDec.2022DOI:10.19976/j.cnki.43-1448/TF.2022032选择性激光烧结GB/GF/PA1212的力学与摩擦学性能吴婷1，吴宏1，文杰斌1,2(1.中南大学粉末冶金国家重点实验室，长沙410083；2.湖南华曙高科技有限公司高分子事业部，长沙410221)摘要：以玻璃微珠(glassbeads,GB)和玻璃纤维(glassfiber,GF)为增强填料，与聚酰胺(Polyamide,PA)1212粉末机械混合，采用选择性激光烧结(selectivelasersintering,SLS)技术制备GB/GF/PA1212复合材料。用万能力学实验机和摩擦磨损实验机测试和分析GB/GF/PA1212复合材料的力学性能和摩擦磨损行为，研究GB含量对材料性能的影响。结果表明，添加适量GB填料可提高复合材料的拉伸性能和耐磨性能，尤其是能显著改善耐磨性能。其中，GB和GF质量分数分别为40%和10%时，复合材料的摩擦因数和磨损率最低，分别为0.23和1.1×10−3mm3/(N·m)。关键词：玻璃微珠；PA1212；选择性激光烧结；拉伸性能；摩擦磨损行为中图分类号：TB332文献标志码：A文章编号：1673-0224(2022)06-569-10MechanicalandtribologicalpropertiesofGB/GF/PA1212fabricatedbyselectivelasersinteringWUTing1,WUHong1,WENJiebin1,2(1.StateKeyLaboratoryofPowderMetallurgy,CentralSouthUniversity,Changsha410083,China;2.PolymerProductLineGroup,FarsoonHighTechnologiesCo.,Ltd.,Changsha410221,China)Abstract:GB/GF/PA1212compositeswerepreparedbyselectivelasersintering(SLS)usingofamechanicallyblendedmixtureofpolyamide(PA)1212,glassfiber(GF)andglassbeads(GB),wheretheGBandGFwereactingasreinforcements.ThetensileandtribologicalpropertiesofSLSsinteredpartsweretestedbyauniversalmechanicaltestingmachineandafrictionandweartestertoexploretheinfluenceofGBcontentonthepropertiesofthecomposites,respectively.TheresultsshowthatthepresenceofGBfillersatanappropriateproportioncanimprovethetensilepropertiesandwearresistanceofthecomposites.Especially,itcansignificantlyimprovethewearresistance.WhenthemassfractionofGBandGFis40%and10%respectively,thefrictioncoefficientandwearrateofthecompositearethelowest,whichare0.23and1.1×10−3mm3/(N·m)respectively.Keywords:glassbead;PA1212;selectivelasersintering;...
