氧指数

氧指数试验燃烧模式和UL-94试验燃烧模式下复合材料属于表面过火型的燃烧，裂解不完全。

In LOI test burning mode and UL-94 test burning mode the pyrolysis was incomplete , which belongs to the surface flame spread burning .

结果表明：PP/NPM（100/30）体系的氧指数为26.8%，600℃时的成炭率为8.30%，NPM显著提高了体系的热稳定性。

The results showed that the LOI of PP / NPM ( 100 / 30 ) is 26.8 % , and the charring rate is 8.30 % at 600 ℃; the thermal stability of the system is improved because of the addition of NPM .

阻燃PVC电工套管氧指数测定中的影响因素

Influence factors in oxygen index test of fire retardant PVC bushing

研制了低卤阻燃HDPE，并对其力学性能进行了分析，详细讨论了不同分子量分布的HDPE、不同种类的偶联剂对阻燃HDPE的拉伸强度、断裂伸长率和氧指数的影响；

The tensile yield strength and elongation of low-halogen flame-retardant HDPE were discussed .

心率和心肌耗氧指数（收缩压×心率）H组比I组明显降低。

There were relatively lower heart rate and myocardial oxygen consumption index ( systolic pressure × heart rate ) in group H than group I.

研制了一种低烟低卤PVC阻燃护套料的配方，考察了不同配方组成时材料的氧指数、烟密度、消烟率和HCl释放量。

A formulation for flame-retardant PVC sheathing of low smoke and low halogen was devel - oped .

结果表明：TFR1填充软质PVC的氧指数可达37.2%，阻燃性优于Al（OH）3、Mg（OH）2等阻燃填料；

Results show that the TFR1 / PVC system has superior flame-retardance with an oxygen index up to 37.2 % .

用未经阻燃处理的牛仔织物增强阻燃PP制备的复合材料的极限氧指数仍然很低，在空气中就可以点燃后缓慢燃烧。

The composites made by the denim without flame retardant treatment reinforced the flame retardant PP have low LOI , which can burn in the air .

大量填充Al（OH）3的SBR硫化胶的阻燃性能较好，氧指数受MAA用量的影响较小。

The SBR vulcanizates highly filled with Al ( OH ) 3 had good flame retardancy , and the oxygen index was less affected by the MAA .

经过陶瓷化阻燃处理的杨木胶合板氧指数能够达到难燃材料B1级的要求，阻燃效果明显。

If oxygen index of ceramics the Flame Retardant plywood achieved flame retardant materials B1-level requirements , have Flame Retardant effect significantly .

分别用APP在水中的溶解度变化，APP处理的LLDPE水浸后的极限氧指数（LOI）变化和磷含量变化评价了APP的耐水性。

Its water resistance was evaluated with its water-solubility and the changes of LOI and P content of the LLDPE after being immersed in water .

然而，PET的极限氧指数仅为21左右，受热易熔融、分解、燃烧，极大地限制了其更加广泛的应用领域。

However , the limiting oxygen index of PET is only 21 % , which is easy to melting , decomposition , combustion during heating process , so its applications were limited greatly .

测定了样品的极限氧指数（LOI）。

Limited oxygen index ( LOI ) measurements were performed on the Oxygen Index Flammability Gauge .

研究结果表明，在PVC中加入5%经偶联剂和振磨处理的硼酸锌，PVC的冲击强度、拉伸强度和极限氧指数均得到了明显提高。

The impact strength , strength at break and limited oxygen index of PVC will be improved quite a lot after blending it with 5 % of ZB pretreated by coupling agent .

氧指数（LOI）结果表明APP/EG具有良好的阻燃协同作用。

Increased its char residue . The limiting oxygen index indicated that APP and EG had good synergistic effect .

用氧指数（LOI）测定、热重法（TG）等方法研究了各种含溴化合物对聚丙烯酸酯阻燃耐热性的影响。

All kinds of bromine compounds influence inflaming retarding and resisting heat of Polyacrylates by limiting oxygen index determination , thermogram method and so on .

然而LLDPE是一种容易燃烧的塑料，氧指数（LOI）仅为17.0%。

However , LLDPE is easy to catch fire and its limiting oxygen index ( LOI ) value is only 17 % .

分别采用氧指数和差热/热重-红外光谱技术对常用的ABS材料进行测试。

By using differential thermal analysis ( DTA ) thermogravimetry ( TG ) & infrared spectrometer ( IR ) and oxygen index ( 01 ) , ABS and flame-retardant ABS were studied .

用红外光谱表征了磷系阻燃聚酯的结构，研究了磷系阻燃聚酯的特性粘数、DSC、氧指数、可纺性等性能。

Structures of phosphorous flame-retardant polyester and its spinnability were characterized by infrared spectra ( IR ), intrinsic viscosity , differential scanning calorimeter ( DSC ), oxygen index ( OI ) .

但它们均属于易燃材料，PE的氧指数为17.4，而ABS的氧指数仅为16.8，这极大的限制了他们的进一步应用。

PE has a limiting oxygen index ( IO ) value of 17.4 , ABS has only 16.8 . Therefore , the flame retardancy of them is very important in widening their application areas .

添加对环境友好的溴系复合阻燃剂，HIPS合金氧指数可高达32%，具有良好的综合性能。

The bromine flame-retardants system was friendly to the environment ; it could improve the oxygen index of HIPS alloy up to 32 % with excellent balanced property .

通过极限氧指数（LOI）和UL-94对聚丙烯的易燃性进行了研究。

The flammability of polypropylene was investigated by Limiting oxygen index ( LOI ) and UL-94 .

同时将其填充到乙烯-醋酸乙烯酯共聚物（EVA）树脂中，采用转矩流变仪、拉力试验机和氧指数仪对EVA/氢氧化镁混合物的流变性能、力学性能和阻燃性能进行了研究。

In addition , the rheological , mechanical , and flame-retard properties of EVA / MH blends have also been studied by using rheometer , tensile testing machine and limiting oxygen index tester .

阻燃抗静电改性后UHMWPE的氧指数可提高84%，体积电阻率可以降到2.1×103Ω·cm；

The oxygen ( indexes ) of UHMWPE modified by flame retardant and antistatic are improved 84 % , and surface ( resistivity ) reduces to 2.1 × 10 ~ 3 Ω· cm .

但对玻纤增强的PA6阻燃效果则不显著，氧指数只提高了5.5%，垂直燃烧性能没有改善。

But the flame retardancy of fiber reinforced PA6 was not distinctive . The increase of LOI was only 5.5 % and the vertical flammability performance was not improved .

用氧指数测定和力学性能测定方法研究了水合氧化铝（ATH）的用量及粒径对共混物性能的影响。

The effect of alumina trihydrate on EPDM / PP was studied by the mechanical and flame-retardant properties determination .

本研究采用广角x射线衍射、扫描电子显微镜、氧指数测定和热分析等方法，对添加不同量含溴阻燃剂FR和协同剂Sb2O3的共混阻燃PAN纤维的结构和性能进行分析。

By the means of WAXD , SEM , LOI , DSC and DTA , the PAN fibers blended with the flame retardant additives , FR and Sb_2O_3 , in Various proportions have been investigated .

FA-3B与Sb2O3并用，当Br/Sb的摩尔比为3/1时，氧指数达到23.0的最大值，比单独用FR&3B高2.0；

In FR-3B and Sb_2O_3mixed system , when mol ratio of Br / Sb was 3 / 1 , the oxygen index maximized to 23 . 0 , 2 . 0 higher than FR-3B alone .

美托洛尔比NTG更明显地降低了心率和心肌耗氧指数（收缩压×心率）。

Compare to NTG , metoprolol lowered heart rate and myocardial oxygen consumption index ( systolic pressure × heart rate ) .

在ABS/PVC合金中加入阻燃剂、以氯化聚乙烯为增韧剂，制得阻燃级ABS合金，氧指数可达到3142，综合性能优良。

With CPE as toughening agent , retardant ABS is prepared by adding retardant to ABS / PVC alloy . Oxygen index of the alloy is up to 31.42 . It is endowed with excellent performance .