oxygen index test method

Results showed that the synergistic action of brominated epoxy 10% and Sb2O3 3% could improve the limiting oxygen index from 18 to 30 and gave good mechanical performance to PU coatings.

结果表明当溴化环氧用量为10%,在3%的Sb2O3协同作用下,可将聚氨酯涂料的极限氧指数(LOI)从18提高到30,同时能保证聚氨酯涂料优良的物理机械性能。

The oxygen index of polypropylene modified by the retardant.

用所合成的阻燃剂改性聚丙烯,可使聚丙烯的氧指数由改性前的18。

The results showed that the hardness,tensile strength and oxygen index(OI) of RTV-1 increased as the addition level of Mg(OH)2 increased,but the elongation at break decreased,and RTV-1 became flame-retarded when 50 phr Mg(OH)2 was used;the hardness,tensile strength and OI of RTV-1 filled by Al(OH)3 w.

结果表明,随着氢氧化镁用量的增大,RTV-1硅橡胶的硬度、拉伸强度和氧指数逐渐增大,拉断伸长率逐渐减小,氢氧化镁用量为50份时RTV-1硅橡胶具有阻燃性;氢氧化铝填充RTV-1硅橡胶的硬度、拉伸强度和氧指数均高于相同用量氢氧化镁填充胶,氢氧化铝用量为40份时RTV-1硅橡胶具有阻燃性;氢氧化镁/氢氧化铝并用量为30份时RTV-1硅橡胶具有阻燃性,氢氧化镁/氢氧化铝质量比为1∶4时其阻燃效果最佳。

18MPa and its limiting oxygen index was 27.

18MPa ,氧指数达到 2 7。

Through the tests with cotton cloths, limiting oxygen index was 31.

低毒的天然纤维阻燃剂是用双氰胺、甲醛为原料在70～75℃的条件下合成的,通过在棉布上测试,氧指数可达31,结果表明双氰胺甲醛树脂是一种阻燃性能良好的低毒聚合物。

PET and PC containing 5wt%polymer have limiting oxygen index (LOI) of 29 6 and 30 0 respectively,while PET and PC without the additive have LOI of 21 and 27 respeetively.

当w(PET中缩聚物 )和w(PC中缩聚物 )分别为 5 %时 ,聚合物PET和PC氧指数分别是2 9 6和 30 0 ,而未加该缩聚物时 ,氧指数为 2 1和 2

It was found that summing up vertical combustion index and limited oxygen index,nitrocellulose could make leather resist better inflammation than casein,but comparing with blank,leather resistive inflammation was all reduced,acrylic resin and polyurethane were separately arranged behind n.

结果发现,综合垂直燃烧指标和氧指数指标发现,四种成膜剂中,硝化纤维和酪素的皮革抗燃性好,其中,硝化纤维抗燃性最好,但是相比较空白样,都有降低皮革的抗燃性的性质,聚氨酯和丙烯酸分别排列其后;而经聚氨酯涂饰的皮革,其在燃烧过程中,伴随着大量烟雾的放出,所以其烟密度很大。

Using Ⅱ,we prepared fire-resistant ABS resin and the limited oxygen index(LOI) and other mechanical properties were tested.

由五氯化磷和氯化铵合成了六氯环三磷腈(Ⅰ),通过亲和取代反应由苯胺和Ⅰ合成了六(苯胺基)环三磷腈(Ⅱ),并对化合物Ⅰ和Ⅱ进行了元素分析,IR谱和质谱表征;用化合物Ⅱ与ABS树脂共混制备了阻燃ABS树脂,测试了其氧指数和力学性能等指标。

Combustion and decomposition properties on wood were investigated by using LOI,char yield,DTA-TG.

以六氯环三磷腈为阻燃剂,采用常压浸注和热-冷浸注结合法,对木材进行了阻燃处理,并利用氧指数,剩炭率,热分析等分析手段对其热降解行为进行了表征。

The flame retardance and thermal stability of it were studied by thermal analysis, SEM, limited oxygen index (LOI) and char yield methods.

通过热分析、剩碳率、氧指数和扫描电镜对无机金属氧化物溶胶处理后的羊毛样品的热降解行为进行了表征,并对其阻燃机理作了初步探讨。

The decrease in Limitting Oxygen Index (LOI) along with the increase of temperature for PVC flame retardant systems was studied by ETOI and TGA.

实验结果发现虽然PVC+Cu2O体系的常温氧指数明显高于PVC+MoO3体系,但在高温下后者的LOI值反而超出前者。