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- limited oxygen condition 限氧条件
- For the lack of systematical study on oxygen condition of wetlands,the further development of wetlands is restricted to some extent. 研究了串联型人工湿地、美人蕉湿地曝气、湿地多点进水和湿地出水回流对人工湿地氧环境的改善及净化效果;
- Limited oxygen index( LOI ) measurements were performed on the Oxygen Index Flammability Gauge. 测定了样品的极限氧指数(LOI)。
- The experimental results show that Limited oxygen index(LOI) values are increased with the increase content of TCEP and density of RPUF. 结果表明,随着密度和阻燃剂含量的增加,氧指数(LOI)在上升到一定幅度后趋缓;
- Fourthly, the experimental results show that Limited oxygen index (LOI) values were increased with the increase content of TCEP and density of RPUF. 增强的机理除了在于增强物的贡献之外，还在于增强物的添加作为材料泡孔的形核点，达到了细化泡孔，增加了材料的机械性能的目的。
- The limited oxygen index (LOI) and DSC-TG testing method was employed to study flame retardancy of flame retardants modified asphalt. 然后进行氧指数和DSC-TG试验，分析了阻燃剂对沥青阻燃性能改善效果及阻燃剂对沥青热学性能的改善；
- Thermal gravimetric analysis(TGA),FTIR,Limited oxygen index(LOI) and vertical firing test are used to research the flame retardancy of the intumescent flame retardant on PP. 采用热重分析(TGA)、红外光谱分析(FTIR)、氧指数测定和垂直燃烧实验,研究了所合成的膨胀型阻燃剂对聚丙烯的阻燃作用。
- The results showed that after surface treatment CG-ATH has a good dispersion in PA66 and the limited oxygen index of PA66 with the treated CG-ATH improves from 25% to 30%. 结果表明,改性后的CG-ATH在树脂中分散性好,在尼龙66中添加表面改性的CG-ATH,其氧指数从25%25提高到30%25。
- Firstly, limit oxygen index test with MF-AFR fiber, methyl cellulose and polymer fiber testified that MF-AFR fiber has the flame-retarded function. 首先测试了MF-AFR纤维、木质素纤维、聚合物纤维的极限氧指数和3种纤维沥青胶泥的极限氧指数，证明MF-AFR纤维具有阻燃性能，并通过TG-DSC试验分析了其阻燃机理。
- 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. 研究结果表明，在PVC中加入5%25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。
- Thermal gravimeteric analysis(TGA) showed that IFR increased the maximum heat loss tempreture,the sample's residued char and the limit oxygen index(LOI) of polypropylene. 热重分析表明膨胀型阻燃剂(IFR)可提高聚丙烯的最大热失重速率温度、增加热失重残余率,使聚丙烯的极限氧指数有较大的提高。
- The results show that after surface treatment the CG - ATH has a good dispersion in PA66 and the limited oxygen index of the PA66 fire retarded with the treated CG - ATH is improved from 25% to 29%. 结果表明,改性后的CG-ATH在树脂中分散性好,在尼龙66中添加表面改性的CG-ATH,其氧指数从25%25提高到29%25。
- The flame retarded properties of intumescent flame retarded LDPE blends in the presence of oxidant ((NH_4)_2SO_4) and the charring agents (coal and asphalt) were studied with the limited oxygen index and the horizontal burning methods. 以氧指数和水平燃烧法作为考察阻燃性能的手段,主要研究了氧化剂(NH_4)_2SO_4和成炭剂煤、沥青对膨胀阻燃低密度聚乙烯阻燃性能的影响,结合热分析方法,对膨胀阻燃低密度聚乙烯体系热降解过程的化学反应机理、成炭机理等进行探讨。
- The limited oxygen index (LOI) of foam specimen was tested according to the GB 2406-80 standard and vertical flammability was tested in terms of CCAR25.853 (b) Flammability Teat Method. 用氧指数仪和民航飞机用垂直燃烧方法测试表征了制备的泡沫样品，并对其阻燃性能进行了研究。
- The thermal degradation, flame retardancy and mechanical properties of Zinc borate(ZB) filled PVC were studied through TGA, limited oxygen index(LOI) test, SEM and mechanical property test. 通过TGA、极限氧指数测定、SEM和力学性能测定研究了PVC／硼酸锌体系的热降解行为、阻燃性能和力学性能。
- The sample room forms tires of the oxygen condition time 取样室形成厌氧状态时间
- A large increase in the limiting oxygen index(LOI) value were observed by adding nano TPP to PP. 加入聚丙烯中,发现极限氧指数有比较大的提高。
- The experimental results show that Limited oxygen index (LOI) values are increased with the increase content of TCEP and density of RPUF.Adding of flame-retardants changes structure of RPUF. 结果表明，随着密度和胆燃剂含量的增加，氧指数(LOI)在上升到一定幅度后趋缓；
- The influence of IFR contents and the ratio of MP and PER on limiting oxygen index(LOI) and UL94 rating of EVA/IFR composites has been studied. 采用氧指数法和垂直燃烧法研究了MP和PER不同配比对EVA阻燃效果的影响。实验结果表明,MP和PER的配比不同对体系的阻燃有很大影响。
- The measurement and test apparatus of limiting oxygen concentration (LOC) of combustible dusts were introduced with the LOC of some conventional combustible dusts given. 根据气体均匀混合假设，导出了采用加压或抽真空惰化情况下惰化次数的计算方法和采用通流惰化情况下惰化时间的计算公式。
