水洗助焊剂的分类和特点

深圳市福英达工业技术有限公司/一站式锡膏解决方案供应商CharacteristicsandTypesofWater-SolubleFluxWater-solublefluxisakindoffluxwidelyusedintheelectronicsolderingprocess,itcanimprovethewettabilityofthesolder,preventoxidation,andcleantheresiduewithwateraftersoldering.Thebiggestfeatureofwater-solublefluxisthatthefluxcomponentishighlysolubleandactiveinwaterwithgoodfluxingperformance,andtheresidueaftersolderingiseasilysolubleinwater,sowatercanbedirectlyusedasthecleaningsolvent.NoconsumptionofODSandVOC,reducingenvironmentalpollutionandsafetyrisks.Accordingtothedifferentactivesubstancesused,water-solublecanbedividedinto:InorganicSystemWater-SolubleFluxZincchloride,tinchlorideandammoniumchlorideareoftenusedasactivesubstances,whichhavegoodsolderingflux,hightemperatureresistanceandeasycleaning.However,thecorrosivenessofitspost-solderingresidue,soitisprohibitedtouseintheassemblyofelectronicproductswelding.OrganicWater-SolubleFlux:ApplytoPCBassemblywelding,dipwelding,electroniccomponentspintin.Thistypeoffluxtorosin-basedfluxforthemainstream.Organicwater-solublefluxandinorganicsystem,corrosivethantheinorganicsystemisweak,butstrongerthantherosinsystem,hygroscopicityisalsolarge.Table1.Organicwater-solublefluxclassificationNon-halogenatedwater-solubleflux:mainlyorganicacidsandorganicamines.Duetotheabsenceofhalogens,theresidueisalmostnon-corrosive,butduetotheuseofalargenumberoforganicactiveagents,somoreresidualions.Acidicwater-solubleflux:containshalide0.2%~3%,pHvalueof2~3.Becauseofthehalide,sotheorganicacidcontentisless,theresidualionsarealsoless.Neutralwater-solubleflux:alsocontainshalide.pHvalueof6~7,sothereisnocorrosiveeffectonthePCBandcomponents.Theuseofwatercleaningprocessneedtoconsiderthefollowingfactors:1.Inordertoensurethequalityofcleaning,theuseofpurewaterqualitymustmeetcertainrequirements;2.Usetheappropriatetemperature,pressureandtimeforcleaning,otherwiseitwillleadtoincompleteremovalofresiduesordamagetocomponents;3.Water-solublefluxshouldbestoredinadry,coolenvironmenttoavoidmoistureabsorptionanddeterioration,toensureitsperformancestability.Inshort,thewater-solublefluxsuperiorfluxingperformance,easytocleanfeaturesandfriendlytotheenvironment,makingitareliablechoiceforelectronicsoldering,promotingtheprogressanddevelopmentofelectr