紡織品ISO11612防護服耐熱和防火測試ISO11612防護服耐熱防火測試-標準名稱ISO11612防護服-耐熱和防火服裝ISO11612Protectiveclothing—ClothingtoprotectagainstheatandflameISO11612標準中的耐熱和防火測試主要包括以下幾種：火焰蔓延測試（A測試）測試目的：評估防護服面料在火焰作用下的蔓延性能。測試步驟：將織物樣品暴露在氣體火焰中，在規定的時間內測量余焰時間、余輝時間和損傷長度等參數。對流熱測試（B測試）測試目的：評估防護服對面料由對流熱源引起的熱傳遞的阻力。測試步驟：將服裝暴露在受控的熱源下，測量織物內表面的溫度上升，確定樣品在溫度升高24℃之前可以保持暴露的時間長度。輻射熱測試（C測試）測試目的：評估防護服面料提供輻射熱保護的能力。測試步驟：將服裝材料暴露在受控來源的輻射熱中，測量通過織物的熱傳遞水平，即記錄樣品背面（未曝光）溫度升高24℃之前可以保持暴露的時間長度。接觸熱測試（F測試）測試目的：評估防護服面料提供接觸熱保護的能力。測試步驟：將織物暴露在加熱板或圓筒上，記錄織物內表面特定溫度升高所需的時間。TextilesISO11612ProtectiveclothingheatandfiretestsTheheatandfiretestsinISO11612mainlyincludethefollowing:1.Flamespreadtest(Atest)Testpurpose:Toevaluatetheflamespreadperformanceofprotectiveclothingfabricsundertheactionofflames.Teststeps:Exposethefabricsampletothegasflameandmeasuretheparameterssuchasafterflametime,afterglowtimeanddamagelengthwithinthespecifiedtime.2.Convectionheattest(Btest)Testpurpose:Toevaluatetheresistanceofprotectiveclothingtoheattransfercausedbyconvectionheatsource.Teststeps:Exposetheclothingtoacontrolledheatsource,measurethetemperatureriseontheinnersurfaceofthefabric,anddeterminethelengthoftimethesamplecanremainexposedbeforethetemperaturerisesby24°C.3.Radiantheattest(Ctest)Testpurpose:Toevaluatetheabilityofprotectiveclothingfabricstoprovideradiantheatprotection.Teststeps:Exposetheclothingmaterialtoradiantheatfromacontrolledsourceandmeasurethelevelofheattransferthroughthefabric,thatis,recordthelengthoftimethebackofthesample(unexposed)canremainexposedbeforethetemperaturerisesby24°C.4.Contactheattest(Ftest)Testpurpose:Toevaluatetheabilityofprotectiveclothingfabricstoprovidecontactheatprotection.Teststeps:Exposethefabrictoaheatingplateorcyli