【英文标准名称】:StandardSpecificationforAdhesiveforAcousticalMaterials
【原文标准名称】:声学材料用胶粘剂的标准规范
【标准号】:ASTMD1779-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D14.70
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:声学的;胶粘剂
【英文主题词】:acoustical;adhesive;specification
【摘要】:1.1Thisspecificationcoversanadhesiveforbondingprefabricatedacousticalmaterialstotheinsidewallsandceilingsofroomsinbuildings.Thisadhesiveisrequiredtomaintainatensileadhesion(bondstrength)ofnotlessthan3.45104dynes/cm2(1/2lb/in.2)foralongperiodoftimeunderthetemperatureandmoistureconditionslikelytobeencounteredandtomaintainsufficientplasticitytoallowformovementofpartsofthebuildingasitages.Note18212;CleanlinessofSurface-Thesurfacetowhichtheacousticalmaterialisappliedwiththeadhesiveshouldbeclean,sound,anddry.Surfacecoatingsshouldberemovediftheirnatureindicatesanunsatisfactoryinstallation,sothattheadhesivecanbeappliedtothebase.Whentheadhesiveistobeappliedonapaintedsurface,testtileshouldbeappliedfor48htodeterminesuitableadherenceofthecoatingbyexamination.Acousticaladhesivesarenotintendedtobeappliedtosurfacesthataremoistandthathaveanalkalinereaction,orthatmaylaterbecomemoistoralkaline.Suchsurfaces,asconcreteorplaster,shouldbeproperlydriedandagedbeforeapplyingtheadhesive.Note28212;Load-Thisadhesiveisnotrecommendedasasolemeansofholdingacousticalmaterialsweighingmorethan121kg/m2(21/2lb/ft2)toceilingsurfaces.Note38212;AmountandConditionofMaterial-Itisrecommendedthatsufficientadhesivebeusedsothatthereisacontactsurfaceofnotlessthan1.2104cm2/m2(20in.2/ft2)ofacousticalmaterial,withaminimumthicknessof0.3cm(1/8in.)andthattheadhesivebeappliedinfourseparatenearlysphericalportionsofapproximatelyequalsizenearthecornersforastandard30.5by30.5-cm(12by12-in.)tile.Fewerthanormorethanfourportionsfor30.5by30.5-cmtilearenotrecommendedduetodifficultyinlevelingandinsecuringeffectivecontactareaonallportions.Adhesivesthatarehard,ordonotwetthesurface,oraredifficulttospreadshouldnotbeused.Note4RigidityofBaseSurfaces-Itisnecessarythatthematerialformingthebasetowhichtheadhesiveisattachedshouldberelativelysmooth,firm,andrigid.Ifthepressureofapplyingtileandadhesivecausesthebasematerialtodeflectexcessively,tilepreviouslyappliedmayhavetheiradhesivebondbroken.Thisoccursonsometypesofgypsumboardsuspensionsystems.Note5Aging-Todate,noacceleratedagingtestsforadhesiveshavebeendevelopedtoduplicateexactlyaginginservice.Theagingtestsinthisspecificationaredesignedtoacceleratetheagingprocessandtotestvariousmanifestationsofaging,andareintendedtobesatisfactoryforcomparingoneadhesivewithanother;theydonotnecessarilyreflectagingcharacteristicsonanabsolutebasis.Purchasersofadhesivesshouldreceivefromthemanufactureradditionalwarrantiesandassurancesofperformanceoftheadhesiveundernormalaging.Note68212;ErectionPractices-Propererectiontechniquesareessentialforproperperformanceofanyacousticaladhesive.Useofamaterialmeetingthisspecificationwillnotinitselfguaranteesatisfactoryperformance.Onlywhentilesareappliedbyskilledandexperiencedworkersfollowinginstructionsfromthemanufacturercanthepurchaserbeassuredofsatisfactoryperformanceofanadhesive.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G39
【国际标准分类号】:83_180;91_100_60
【页数】:3P.;A4
【正文语种】: