BS 4790：小火源对铺地织物的影响测定方法（热金属螺母）

BS4790：小火源对铺地织物的影响测定方法（热金属螺母）标准名称：BS4790：Methodfordeterminationoftheeffectsofasmallsourceofignitionontextilefloorcoverings(hotmetalnutmethod)BS4790：小火源对铺地织物的影响测定方法（热金属螺母）适用范围：BS4790标准描述了一种使用热金属螺母测定小火源对纺织地板覆盖物影响的方法。它适用于所有类型的纺织地板覆盖物，无论是松散铺设还是完全粘附，无论是否有衬垫。样品要求：根据标准，至少切割3个试样，尺寸为300mm✖300mm，包括构成最终安装的部分背衬或衬垫。测试过程：在测试纺织品的标准温度环境中或大气中取出试样后2分钟内进行测试在马弗炉中将螺母加热至900±20Cin的温度将加热的螺母放在样品表面，确保螺母放在夹紧环的中心。在滑动面板与试样接触30±2s后。拆下螺母，保持关闭，直到所有点火影响都停止。其他相关标准：NFPA701：织物和薄膜火焰传播测试方法标准16CFR1630：对地毯和垫子表面燃烧的标准测试16CFR1631：地毯和垫子表面易燃性的标准测试ISO12952-1：纺织品-床上用品燃烧评定-第1部分：点火源：闷烧香烟ISO12952-2：纺织品–床上用品的可燃性评估项目–第2部分：点火源：模拟火柴ISO6941：纺织布料-燃烧行为-垂直方向样本燃烧火焰蔓延性能测定EN13772：窗帘、幕布用纺织品－燃烧速率的测定BS4790:MethodforDeterminationoftheEffectofSmallIgnitionSourcesonFlooringFabrics(HotMetalNuts)StandardName:BS4790：Methodfordeterminationoftheeffectsofasmallsourceofignitionontextilefloorcoverings(hotmetalnutmethod)Scopeofapplication:ThisBritishStandarddescribesamethodforthedeterminationoftheeffectsofasamllsourceofignitionontextilefloorcoveringsusingahotmetalnut.Itisapplicabletoalltypesoftextilefloorcoveringswhetherloose-laidorfullyadheredandusedwithorwithoutanunderlay.SampleRequirements:Fromeachsample,cutatleasethreetestspecimenseachmeasuring300mm×300mm,includinganybackingorunderlaythatdormspartofthefinalinstallation,followingtheproceduredescribedinBS4664.Testprocess:Testwithin2minutesofremovingthespecimeninthestandardtemperatureenvironmentofthetesttextileorintheatmosphere.Heatthenuttoatemperatureof900±20℃inthemufflefurnace.Usingthecrucibletongsplacetheheatednutontothespecimenwithin3sofitsremovalfromthefurnace.Opentheslidingpanelandremovethenutfromthespecimenafterithasbeenincontactwiththespecimenfor30±2s,andthenimmediatelyclosetheslidingpaneloncemore.Otherrelevantstandards:NFPA701:StandardforTestMethodsforFlamePropagationofFabricsandFilms16CFR1630:StandardTestforBurningSurfacesofCarpetsandMats16CFR1631:StandardTestforFlammabilityofCarpetandCushionSurfacesISO12952-1:Textiles-BeddingBurningAssessment-Part1:IgnitionSource:SmolderingcigarettesISO