一种酸性蚀刻液可循环再生工艺的分析

《一种酸性蚀刻液可循环再生工艺的分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、ABSTRACTIntheviewofthecurrentPCBindustry，thatis，acidetchingfluidsystemwhichhasthedisadvantageof”one-timeUSe”，thepurposeofthisstudycontainstheflowingaspectsoftechnology，economyandenvironmenttoselectamostvaluabletypeofacidetchant．Thestudyincludesthefeasibilityofrecycling,andrecyclinguseinvariou

2、ssectorsofthebesttechnicalparameters．TheresearchwillprovidehelpfuldataforthePCBindustrytopromotecleanerproduction．Themaincontentsofthestudyinclude：(1)makeacidetchantofcopperchloride，studythebestparametersofthevariouscomponentsthatimpactetchingrate(2)studytherecoveryprocesscontrolfromtheimpact

3、ofthetwodeterminingfactorsofetchingratedeclineofitsrenewableprocesscontrol，includingthetheoreticalcalculationsandprocesscontrol；(3)recyclecopperfromthewasteliquid，includingthedefinitionofrecoveryprocessandinstallation，thedefinitionofparametersofdifferentfactorsthatimpactrecoveryelectriccurren

4、tandthemorphologyofthecopper．(4)adjustthetreatmentcomponentfromcopperandtesttheperformanceafterrecycleuse．(5)giveanevaluationtotherecycleprocess，fromthetechnical，economicandenvironmentalaspectsofthecopperetchingacidchloride．Theresultsshowedthatacidetchantistechnicallyfeasiblefromtherecyclingp

5、rocess，ithastechnological，economicandenvironmentaladvantagesoverthetraditional”one-timeuse”technology．(1)tomeasurethebestoperatingconditionsfromhydrochloricacidandcopperchlorideacidchlorideofthecopperetching：temperature50—55"C；CuHconcentration120—1509／L，CI‘concentrationnotlowthan2009几acidequi

6、valent2—3N．AddingNH4C1totheetchedliquid，theetchingrateincreasedslightly,butalargequantitycrystallineprecipitationinthesolutionwillbegeneratedatthelowertemperature．(2)Processcontrolofetchingregeneration：H202andHClaremixedintooxygensolutionofetchingCu+ontheratioofabout1：2．TocontrolthecontentofC

7、u+intheetchingfluidindirectlytroughtheredoxpotentialcalculator,oxidation-reductionpotentialrangeis520—-550mv；todetectindirectlytheproportionofcopperintheetchingdissolution，theproportionrangeis1．273to1．292；toaddhydrogenperoxideintotheetchingfl