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ID:33737483
大小:2.59 MB
页数:66页
时间:2019-02-28
《塑料表面激光标刻和变色工艺的分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、北京工业大学理学硕二}j学位论文ABSTRACTAbstractLaSerm酞ingtechlliqueis印plied研delyinindustryduetoitshighSpeed,emcient,erle唱y山maIldenviro咖ental衔endlyfeanlresa11doⅥ1sits疵queadVantagesinplaSticprocessing.Tmst11esismakesaresearchontheoutcomeofl弱ermar妯ngonplaSticsurf:aceiIlrespectofprofileandcolo啦C02la
2、Serandfiberlasermar虹ngsystemswereuSedtomark7s锄plesof5sortsofplastic,includingABS,PE,PMMA,PPandPVC.AlinesegmentwassetaStllem砌dngpattemaIldsc猢edVectorially.MostV撕ablep∞锄etersofmesyStemcouldbefomlulatedaSVariablepo、Verdensity,andmeequationisderiVed.Witllt11eopticalmicroscope,Sc锄liI培E
3、lectromcMicroscope(SEM)andsurfIacetopo伊印hyinstn埘ent,melaSermarldngoutcomeswereobserVedandmeaSllred觚Ldcorrelationcur、,eswereobtained.ThereforeamnctionaJrelationbet、;~,eenlaSeroutputpo、№rdensi够andthemarhnglinewidthisderivedⅡmDughlillearfittingofeachcurve.1Ksthesisalsostudies廿lea】ter
4、ationoft11emateriaJcolouraRerm础dngaIldconcludesitintothreeprinciples.Wimalowerpowerdensi劬thecolomtandomeraddictivescontainedinplaSticaredecomposedandVitiated,w址chresultsiIlmepalenessofmaterial.TheEne玛yDispersiVeX—RaySpect】∞meter(EDS)觚alysisindicatesthatⅡlebaSicchemistryelementsand
5、tlleirproportionofthemafkareidenticalwithtlleoriginalmaterial.ItprovesⅡ:leoIdychemicalchangeismemodificationofthemolecllle证行嬲tmcture.Asmepowerdensit)rreachesacertainextent,themateriaJisoxid娩edacutelyorcatChesfireiIlthelaSercalefktionzone.Theresidueontllesurf.acedetenninest11ecolou
6、rofⅡ1em越【.As也ematerialiscompletelyorhighlytranSparemtosomelaser,theforeignsubstaIlcecontajnediIl也eplaSticmightabsorbmeIaserandheata血crozonedramaticallyalldmaket11ezonetransfo珊intoatiIlyblackSpot.Thedistributionofmeblackspotscanbecontrolledt0fo肌amafkjngpattemsimilartotheordinarylas
7、ermar虹ngbya由uStingmesystempar锄∞ters.K曼D型Q巡墨:LaSerM狄ing;ColourMarkiIlg;PlaStic北京工业大学理学硕_I.学位论文IV目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.IAbstract⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.¨l第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯...1—1.1激光打标技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一1—1.1.1激光打标技术的优点⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
8、⋯⋯⋯⋯-1—1.1.2激光打标方式的演变⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
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