發(fā)表時(shí)間:(2016-08-19 09:32:25) 點(diǎn)擊量:38


發(fā)表時(shí)間:(2016-08-19 09:32:25) 點(diǎn)擊量:38
許多國(guó)內(nèi)建筑產(chǎn)品用于澳大利亞,新西蘭等澳洲項(xiàng)目,需要證明其通過(guò)AS3837標(biāo)準(zhǔn)以證明其產(chǎn)品防火阻燃性能測(cè)試。
AS/NZS 3837標(biāo)準(zhǔn)名稱(chēng)AS/NZS 3837:1998 Method of test for heat and smoke release rates for materials and products using an Oxygen Consumption CalorimeterAS/NZS 3837:1998耗氧量法測(cè)定材料釋熱及煙霧釋放速率方法
AS/NZS 3837測(cè)試設(shè)備圓錐熱量計(jì)量器火焰測(cè)試cone calorimeter fire test
AS/NZS 3837測(cè)試指標(biāo)
(a)熱釋放率,由氧氣消耗量決定(Rate of heat release, by measurement of the oxygen consumption, as determined by the oxygen concentration and the flow rate in the exhaust product stream);
(b)有效熱燃燒值和物質(zhì)質(zhì)量損失率(Effective heat of combustion from a concomitant measurement of specimen mass loss rate, in combination with the heat release rate);
(c)煙釋放率(Smoke release, by obscuration of light by the combustion product stream);
(d)可燃性,產(chǎn)品加熱后從不燃到可燃的時(shí)間(Ignitability, as a measurement of time from initial exposure to time of sustained flaming)。
AS/NZS 3837測(cè)試方法及流程測(cè)試前,樣品用錫箔紙(烤箱燒烤那種)包好4角和樣品的底部形成一個(gè)托盤(pán),用于存儲(chǔ)可能的融化物。水平放置樣品,火焰從一側(cè)點(diǎn)燃,同時(shí)給樣品以50kw/m2的熱輻射加熱。出現(xiàn)如下情況可以終止測(cè)試:1.樣品燃燒結(jié)束2分鐘后;2.平均物質(zhì)質(zhì)量損失率一分鐘后降低到150gm2;3.試驗(yàn)時(shí)間超過(guò)60分鐘;4.樣品開(kāi)始試驗(yàn)10分鐘內(nèi)不燃燒;
AS/NZS 3837等級(jí)劃分:防火等級(jí)1級(jí)-不燃材料。防火等級(jí)2級(jí)-難燃材料。防火等級(jí)3級(jí)-可燃材料。防火等級(jí)4級(jí)-易燃材料。


