BS 4790：小火源對(duì)鋪地織物的影響測(cè)定方法（熱金屬螺母）

BS4790：小火源對(duì)鋪地織物的影響測(cè)定方法（熱金屬螺母）標(biāo)準(zhǔn)名稱：BS4790：Methodfordeterminationoftheeffectsofasmallsourceofignitionontextilefloorcoverings(hotmetalnutmethod)BS4790：小火源對(duì)鋪地織物的影響測(cè)定方法（熱金屬螺母）適用范圍：BS4790標(biāo)準(zhǔn)描述了一種使用熱金屬螺母測(cè)定小火源對(duì)紡織地板覆蓋物影響的方法。它適用于所有類型的紡織地板覆蓋物，無(wú)論是松散鋪設(shè)還是完全粘附，無(wú)論是否有襯墊。樣品要求：根據(jù)標(biāo)準(zhǔn)，至少切割3個(gè)試樣，尺寸為300mm?300mm，包括構(gòu)成最終安裝的部分背襯或襯墊。測(cè)試過程：在測(cè)試紡織品的標(biāo)準(zhǔn)溫度環(huán)境中或大氣中取出試樣后2分鐘內(nèi)進(jìn)行測(cè)試在馬弗爐中將螺母加熱至900±20Cin的溫度將加熱的螺母放在樣品表面，確保螺母放在夾緊環(huán)的中心。在滑動(dòng)面板與試樣接觸30±2s后。拆下螺母，保持關(guān)閉，直到所有點(diǎn)火影響都停止。其他相關(guān)標(biāo)準(zhǔn)：NFPA701：織物和薄膜火焰?zhèn)鞑y(cè)試方法標(biāo)準(zhǔn)16CFR1630：對(duì)地毯和墊子表面燃燒的標(biāo)準(zhǔn)測(cè)試16CFR1631：地毯和墊子表面易燃性的標(biāo)準(zhǔn)測(cè)試ISO12952-1：紡織品-床上用品燃燒評(píng)定-第1部分：點(diǎn)火源：悶燒香煙ISO12952-2：紡織品–床上用品的可燃性評(píng)估項(xiàng)目–第2部分：點(diǎn)火源：模擬火柴ISO6941：紡織布料-燃燒行為-垂直方向樣本燃燒火焰蔓延性能測(cè)定EN13772：窗簾、幕布用紡織品－燃燒速率的測(cè)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