The limiting oxygen index(LOI) and vertical burning(VB) tests were conducted on the 20 textiles to learn their burning ratings and the effects of materials on combustion properties.
利用不同火源对20种西藏古建筑中典型装饰织物和4种纯涤、纯棉和涤棉织物进行了燃烧试验,研究了其燃烧行为;利用极限氧指数(limiting oxygen index,LOI)和垂直燃烧(vertical burning,VB)方法对这20种织物的燃烧性能进行了测试,判定了燃烧级别,分析了材质的影响,并对4种纯涤、纯棉和涤棉织物分别在拉萨和合肥同期进行了LOI和VB对比测试,探讨西藏高原环境对装饰织物燃烧性能的影响;利用锥形量热标准化测试研究了部分代表性织物的对火反应特性,分析了材质、厚度等织物属性的影响。
The flame retardancy of samples were studied by determine Limiting Oxygen Index(LOI),char yield, thermal analysis and scanning electron microscopy(SEM).
本文分别用二氰二胺、磷酸以及二氰二胺和磷酸协同体系对大豆蛋白纤维(天鹅绒,38%大豆蛋白纤维/38%棉/24%涤纶)进行阻燃整理(主要对天鹅绒制品中的大豆蛋白纤维的处理),通过极限氧指数、剩炭率、热分析和扫描电子显微镜等分析方法对其阻燃性能进行研究,并用Broido方程计算其热降解活化能的变化。
The Limiting oxygen index (LOI) of the textile fabric is higher than 30%.
其织物的极限氧指数（ＬＯＩ）达３０％以上，阻燃性能优
The calcium alginate fiber had the limiting oxygen index of 34.
结果表明:海藻酸钙纤维的微观形态和粘胶纤维的相似,红外光谱结果证实了海藻酸钙纤维中"egg-box"结构的存在;海藻酸钙纤维的化学稳定性较差,随着处理液浓度和温度的升高,以及处理时间的延长,其稳定性越差;海藻酸钙纤维的热稳定性较好,极限氧指数为34。
The flame retardancy of flame retardant viscose fiber was measured by limiting oxygen index method.
采用极限氧指数法测定了阻燃粘胶纤维的阻燃性能;采用热重分析法研究了普通粘胶纤维和阻燃粘胶纤维的热稳定性及热降解表观活化能,初步探讨了阻燃粘胶纤维的热降解机理。
The flame retardance of flexible PVC was determined through limited oxygen index(LOI) and smokescope.
通过热分析方法研究了用铝酸锌作阻燃剂的软PVC从室温到800℃的热降解过程,通过极限氧指数(LOI)、烟密度测试器测试手段研究了铝酸锌对软PVC的阻燃作用。
The influence of ammonium polyphosphate on combustion performance and mechanical property of polyethylene was investigated by limited oxygen index test and mechanical property test.
通过极限氧指数测试、力学性能测试研究了聚磷酸铵(APP)对聚乙烯(PE)的燃烧性能和力学性能的影响。
The flame retardancy was measured by cone calorimeter and limited oxygen index methods,and the mechanism of flame retardancy was discussed.
采用熔融插层法制备了聚丙烯/蒙脱土纳米复合材料,利用X射线衍射仪和透射电镜对材料的微观结构进行了分析,并采用锥形量热仪法和极限氧指数法对其阻燃性能进行了测试,同时对阻燃机理进行了探讨。
Based on asphalt flame-retarding system of aluminium trihydroxide(ATH),authors studied the flame-retarding performance of ATH and magnesium hydroxide(MH) and accelerating effect of zeolite powder by tests of limit oxygen index and flash point,also presented the mixture ratio of compound flame-retarding asphalt.
基于氢氧化铝(ATH)沥青阻燃体系,通过极限氧指数与闪点测试,研究ATH与氢氧化镁(MH)的阻燃性能及沸石粉的阻燃促进作用,提出ATH、MH及沸石粉的复合阻燃沥青配合设计,并利用差热分析与扫描电镜观察对ATH、MH的阻燃机理及沸石粉的作用机理进行了探讨。
The flame retardancy,mechanical and thermal properties of cured epoxy resin were measured by Limiting oxygen index(LOI),Impact tests,Shore hardness tests,and TG,respectively.
用极限氧指数、冲击强度、硬度、热失重等测试方法研究了EPPA对环氧树脂二乙烯三胺固化物阻燃性以及其它各种性能的影响。
However,the limiting oxygen index(LOI) value of the treated fiber remained at 25.
38%时,聚乳酸纤维的极限氧指数仍保持在25。
