LED lighting accessories heat radiation.docx
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LED lighting accessories heat radiation.docx
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LEDlightingaccessoriesheatradiation
1.LEDlightingaccessoriesheatradiation-softthermalconductivepad
HeatradiationistheproblemthatLEDlightinghasbeenalwaysexisting,atthesametime,theprocessbetweenheatbodyandheatsinkisthekeyelement.ThematerialusedintraditionalheatradiationmodelisthermalconductiveGreasewhichiscosteffectiveandhasagoodthermalconductivity,butitexistsnotevenlywhenlayingonlargeareas,maycontaminatecomponentoncertaindegree.Softthermalconductivepadisusedforthecontactofheatradiatingcoppercladplateandheatsinkormentalbracketlampandmentalshell,whichcanmakebeddingwidelyandoperateconveniently.Thethinneris0.5mm;thethicknessof1.0mm,1.5mm...5mmisalternative.thethicknessofthethickestisuptoabove1.0mmwithhighcompressionandcaneffectivelytransferheattoradiation.
Ourcompanydevotedtothedevelopingofthermalinterfacemanufacturewithabouttenyearsmanufacturingexperience,andnowweadoptedtherelativeexperienceofothercooperatedLEDcompanytomeettherequirementofdomesticLEDtrade,learningmoreheatdissipationrequirementsandthestructurecharacteristicofLEDlighting,developingandmanufacturingLEDthermalconductivepadusedonthemarket.
Softthermalconductivepadhastheexcellenttechnologicalfeatureofhighcompression,surfaceself-tackywhichmakesitveryconvenientforinstalling,weatherresistanceandhighpressureresistance.Afterusedbythemanufacturerrelated,theeffectonheattransferisveryobvious,theinternaltemperatureofthecomponentduringlongtermworkwaslowered,thelifespanofLEDlightingisgreatlyimproved,theenergylosshasreduced,thelightattenuationfelltocertaindegree,promotingallfunctions(lifespan,workingenvironment)ofLEDlighting.
Recently,LEDthermalconductivehasbeenwidelyusedinhigh-powerLEDlighting,powerrange18w-200wandsoon,suchas:
LEDstreetlight,spotlight,floodlight,tunnellight,buriedlight,wash-walllightetc.Astothefireresistance,itmeetstherequirementofU.L94V-0,accordingwithEUSGSenvironmentalprotectioncertificate,usuallyunder-50℃-150℃,itworks.
2.ThefunctionofthermalconductivepadinLEDlighting
Asiswell-knowntoall,thermalconductivepadisamaterialusedforheatradiation,buthowitrealizedheatconductionandradiation?
Loweredheatingelement?
Firstweneedtoknowhowtocorrectlyuseit,itislikethatwehaveboughtacapbutattemptingtoplayaroleofshoe,itobviouslycannotmeettherequirement.Asfortheconvention,themainroleofthethermalconductivepadistofillinforconduction,foritisnotflatbetweenheatbodyandradiatorandthereisalotofairexistingifcontactdirectly,whileairisnotagoodheatconductorwhichmakesithardforheatingelementtotransferenergytoradiator,thethermalconductivepadwithhighcompression(atleast20%)ratiodischargeairtoachievebettercontact.InLEDarea,themostconcernedproblemastoallusersishowmuchthejunctiontemperaturehasreducedafteruse.
AccordingtotheEquationofFourier’slaw:
R(thermalresistance)=L(thickness)/K(thermalconductivity).s(contactarea)△T(temperaturerise)=RW(POWER:
chiptemperature*heatconversionratio).Sowecanknowwhichproducttouseisappropriate.
3.Carthermalconductiveinterfacematerial
TheTP150series,Aochuancarengineercontrolunit,isthethermalconductivematerialthatismadeofauniquecompoundmixedsiliconegelwithceramicpowder.Consideringthethermalmaterialperformancecomprehensively,temperatureendurancerangeandprice,Itisalsoaremarkablecost-effectivethermalconductivepadwhoseconductivityis1.5w/m.kwithself-tackyindoubleside,insulating,shockproof,filledandexcellentdurableperformance,itmeetstherequirementofUL94V0.
4.Theusagemethodofthermaltape
Heatconductiondoubleadhesivetapewhenbondedneedtopayattentiontotheoperatingmethod,Itisstrictlyprohibitedtocontactsurfacebyhandorothernon-adhesive.Itisstrictlyprohibitedtobepastedrepeatedly.Bondingsurfaceshouldbekeptclean,dry,usuallycleanedwithalcoholbeforeuse,avoidingtheimpactofbondinghardness.Auxiliaryproducts:
cottoncloth,industrialcleaningagent,rubbergloves.Thefirststep:
usehairirremovablecottonwipedcleanthesurface,Thesecondstep:
usesoakingindustrialcleanercottonwipedthesurfaceofthedevicecleanandremovetheoilpollution,inaddition,donotcontactthecleanersurfaceduringinstallationprocess.Thethirdstep:
teartheprotectivefilmofftheadhesiveside,don’ttouchthesurfacebyfinger.Thefourthstep:
postitonthesurfaceofthedevice,pressinglightlyfromthemiddletotheedgeforfiveseconds.ensuredoubleadhesivetapeonthebackcontactwiththeradiatingdevice100%completely.Thefifthstep:
toreofftheprotectivefilmontheothersideoftheadhesivesameasthethird,theforthstepwhichmakesdoubleadhesivetapeandchipbondingfirm.
5.ShenzhenAochuanTechnologyCo,.LtdintroduceyoutheTP250seriesthermalconductivepad
TP250isaseriesofthermalinterfacematerialwithanexclusiveprescription,cost-effective,excellentthermalperformanceandself-tackyindoubleside.Itshowedlowthermalresistanceandexcellentelectronicisolationonhighcompressionwhenelectronicdeviceassembleinuse.Itworksstablyunder-40℃-150℃andmeettherequirementofUL94V0.
TheperformanceofTP250series:
○thermalconductivity:
2.5w/m.k.○lowcompressionapplication.○naturalself-tackyindoubleside.○highelectronicisolation○excellenttemperaturedurableperformancehighheatradiationperformance,cost-effectiveTP25seriesthermalconductiveapplicationscope.○computerheatradiatormodule○betweencoolingdeviceandchassisorframe○highspeedstoragedrive○carenginecontrolunit○platpaneldisplay○powerconversiondevice○LEDlightingdevice○PDPdisplayscreen○LCDback-lightmoduleTP250seriesthermalconductivepadmaterialcertificatenumberencodingprinciple:
TP250/H25-T25:
producttypeH25:
hardnessH25=shoreC25T25:
thickness,T25=2.5mmstandardsize:
200mm*400mm,candiecuttoallsizeaccordingtothemould.Standardthickness:
0.5mm1.0mm1.5mm2.0mm2.5mm3.0mm3.5mm4.0mm4.5mm5.0mm,theabovedatesareobtainedbythelaboratoryofshenzhenaochuantechnologycompany.
6.thedevelopmentandpriceofthermalconductivepad
Themainproductofthermalconductivematerialisthermalgrease,thermalconductivepad,thermalisolationsheet,thermaldoubleadhesivetapeandthermalsealantpooling.
Thethermalconductivematerialwidelyusedisthermalgrease,aswiththedevelopmentofmodernelectronicproducts,thermalgreasecannotsatisfyalltheproblemsofthermaldesignheatradiation,sothereisthethermalconductivepadandthethermalisolationsheet,thermaldoubleadhesivetape,thermalconductiveadhesive,thermalconductivepouringsealantandsoon.
EarlythermalgreaserepresentativeisDaokangning,xinyue.LaterBeggs,Lairdandsoonwiththermalconductivepadintothermalfield,.In2002,Chinabegantohavethethermalconductivematerial,thisperiod,itisthethermalconductivematerialmainlyimportedfromEuropeandAmericathatsetupagent,branchofficeinchina.In2003,itbegantohaveChineseproductionline,foundry,intermediatecuttingbusiness.Untilsofar,foreignbrandonlyhaveproductionlineandfoundryledbyforeignresearchanddevelopment.Butthepriceisstillonthehighside,themarketshareisshakenbydomesticenterprise.
Withtheespecialcondition,includingrawmaterialsupply,excellentresearcheranddeveloper,organosiliconchemicalformula,AochuanTechnologycompanyprecedingestablishedthedomesticthermalconductivepadenterprisein2004.Latergainedthecapitalsupportbytheshenzhengovernment,furtheroptimizingtheprocedureofresearchanddevelop,improvingresearchdevice,buildingamoreperfectproductseries,formingourownbrandAOK.BeingauthorizedbytheIS09001andISO14001system,approvedtheRoch,SGS,ULcertificateandsoon.
Whilerecentlytherearetoomanythermalconductivepadenterprises,mostlyareagentintermediarybusinessormodulecuttingfactory,onlyfewhaveindependentresearchanddevelopmentofcoretechnology.Manyenterprisedonotfollowthemarketruletocompete,completelydependonprice,Malignantcompetitiondisturbedthewholeindustry,breedingmanyinferiorperformancethermalconductivematerial.Especiallydomestictradeintermediarybusiness,modulecuttingfactoryputthepriceonthelowside,butusuallyproductperformanceandsupplycannotbeguaranteed.RelatedcompleteequipmentneedatleastmillionsandR&Dtechnology,formulaformacertainthreshold,manyenterprisesuseplainmaterialtolowertheprice,whichmaybringgreatlosstocustomer.
Aochuanthoughtitcreatedvalueforcustomers,reallywork,doChinesebrandthatcanreallysolvecustomer’sproblem.Althoughthemarketcompetitionisbadoreveniffrontroadisfar,aochuanpeoplestraightenthenationalbackbone,buildingupworld-classisstillamissionthatalwaysdrivesAochuangoingforward.
7.LEDlightingheatradiationstructureandprincipleanalysis
Recently,therearemanylightingemittingdiodeasthenewgenerationenergywiththecharacteristicoflong-termlifespan,higheffectiveenergyconservation,greenenvironmentalprotectionandsoon,whichwaswidelyusedindisplay!
Withthedevelopingofscienceonlightingfield,advancedtechnologyisconstantlyappliedtosemi-conductiveproductionwhichmakestheLEDlightingefficiencygrowingupconstantly,thecostiscontinualdescending.Thefollowing:
shenzhenaoc
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