Damper

Introduction

Characteristicsintroduction

ThedampingsheetmadeofpolymermaterialsorrubbermaterialshasstablephysicalandchemicalpropertiesandexcellentvibrationreductionNoisereduction,heatresistance,coldresistance,agingresistanceandstrongadhesion.Noirritationtohumanskin,nocorrosiontometal,plastic,rubberandothermaterials.Someautomobilesandconstructionmachineryhavebeguntousemoreenvironmentallyfriendlywater-baseddampingcoatingproducts,whichhavesuperiorvibrationandnoisereductionperformance.

Thebestoperatingtemperaturerange:25℃±10℃.

Scopeofapplication

Vibrationreductionandnoisereductionofvariousaerospacevehiclesandinstrumentsandequipmentonaerospacevehicles.

Vibrationandnoisereductionofvarioustrafficvehicles.

Anti-noiseandmutetheairconditioners,refrigerators,washingmachinesandotherhouseholdappliances.

Vibrationandnoisereductionofothermechanicalvibratingbodies.

Materialsandhazards

IncountrieswithdevelopedautomobileindustriessuchasEuropeandtheUnitedStates,automobiledampersgenerallyusepolymerresinmaterialsorrubbermaterials.Asrawmaterials,thesetworawmaterialswillnotvolatilizetoxicandharmfulgases.InChina,therearedampersmadeofasphalt,whichcontinuetoemitodors,causingairpollutioninthecarandendangeringhumanhealth.

Takeacarasanexample.Thereareeighttotwelveplaceswheresuchdampersneedtobeattached.Mostofthemarelocatedinaclosedcarcabwithatotalareaof​​about3squaremeters.ThetotalamountofasphaltisaboutFortenkilograms.Duetosunexposureandengineheatdissipation,theasphaltdampersclosetothesteelplatecaneasilydecomposeandreleasetoxicpolycyclicaromatichydrocarbongasesduetoheat,andthisisalong-termslowreleaseprocess.

Amongpolycyclicaromatichydrocarbons,benzopyrenehasthegreatestimpactonthehumanbody.Itisamutagen,acarcinogenicsubstance,andarelativelyfat-solublesubstance.ThiscanbeinhaledintothebodyandcanstayInthemucousmembraneofthelung,inthiscase,cellmutationmayoccur,soitwilltakealongtimeforthismutationtoproducesomeshadowsortumorchanges.

Polycyclicaromatichydrocarbons(PAHs)areaclassofcompoundscomposedoftwoormorearomaticrings,whicharewidelydistributedinthenaturalenvironment.BecausemostPAHsarecarcinogenicandteratogenic,theyhavereceivedwidespreadattention.Itisacommonindirectcarcinogenwithhighactivity.After3,4-benzopyreneisreleasedintotheatmosphere,itisalwayscombinedwithaerosolsformedbyvarioustypesofparticlesintheatmosphere.Amongtheinhalabledustparticlesbelow8microns,therateofinhalationintothelungsishigher.Inhaledintothelungsthroughtherespiratorytract,entersthealveoliandeventheblood,causinglungcancerandcardiovasculardisease.

Introduction

Thesituationofcomplaintsaboutdefectsin2012automotiveproductsjustannouncedbytheGeneralAdministrationofQualitySupervision,InspectionandQuarantineonMarch15,2013showsthatinadditiontoqualityproblemssuchastransmissions,airbags,andtires,Thepeculiarsmellinthecarhasbeenrevealed.IfthedampersonMercedes-Benz,BMWandAudicarshaveasmell,itisverylikelythattheyaremadeofasphalt,astheautopartsmanufacturersaid.ThedampersusedindomesticBMWcarshavebeenabandonedbyGermanBMWfor20years.BeginninginSeptember2012,Beijing,Shanghai,Nanjing,Suzhou,Hangzhou,Guangzhou,Shenzhen,ChengduandotherplaceshavesuccessivelycomplainedaboutunpleasantodorsfromMercedes-Benzowners.Aftertesting,thedampersofthesevehiclesallcontainNo.70Asphaltingredients.In2012,thetotalsalesofcarsofthethreemajorbrandsofBeijingBenz,BMWBrillianceandFAWAudiwasabout650,000.Onlyusingasphaltdamperscangenerateatotalof97millionto130millionyuaninprofitsayear.

Pitchreferstotheresidueproducedaftertheextractionofcoaltarorpetroleum.Becauseitcontainspolycyclicaromatichydrocarbons,sulfur,phenolandotherharmfulsubstances,theInternationalCenterforCancerResearch(IARC)oftheWorldHealthOrganization,asearlyasIn1976,coaltarpitchwasclassifiedasaclassofcarcinogens.

Reasons

ExpertspointedoutthatthereasonwhyimportedbrandssuchasMercedes-Benz,BMWandAudiaremadeinChina,thereasonwhytheyuseasphaltinsteadofresin,rubberandotherenvironmentallyfriendlymaterialsisbecausemycountrydoesnotRegardingtherelevantnationalstandardsforautopartsandauxiliarymaterials,ontheotherhand,theuseofasphaltcanreducetheproductioncostsofenterprises.

Environmentalprotection

Thedamperisathinsheetmadeofdampingmaterial.Itisusedonthevehiclesheetmetal.Thebutylrubbercompositemetalaluminumfoilisusedtoformthevehicleshockabsorbermaterial.Itbelongstothecategoryofdampingandshockabsorption.Thehighdampingofbutylrubbermakesitadampinglayerthatweakensvibrationwaves.Generally,thesheetmetalmaterialofvehiclesisthin,anditiseasytovibratewhendriving,high-speeddriving,andbumping.Aftertheshockabsorptionfilteroftheshockabsorber,thewaveformchangesandweakens,achievingthepurposeofreducingnoise.Itisawidelyusedandefficientautomotivesoundinsulationmaterial.