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on the Pechini method.A polymeric precursor sol was formed by use of citric acid and ethylene glycol as the chelating agents of metal ions.The perovskite-type BaCe0.95Y0.05O3-δ powders with uniform shape... by modulating the quantities of nitric acid and ammonium hydroxide,the quantities of the residue,carbonate ions were also affected by the quantities of the citric acid and ethylene glycol. Key words......
防辐射聚酯布的化学镀制备与表征 周元林1,吴军1,董发勤1,沈雁1,唐小红1,熊鹰1,付万发2,杨文彬1 (1.西南科技大学材料科学与工程学院,四川,绵阳,621010;2.表面物理与化学国家重点实验室,四川,绵阳,621907) 摘要:采用化学镀方法在聚酯布表面沉积1层Ni-P合金,用扫描电子显微镜(SEM),X射线衍射仪(XRD),热重分析仪(TG)对镀层形貌,结构和性能进行表征.结果表明:聚酯布表面化学镀Ni-P合金由大小为0.1~1μm的微粒组成;镀层为非晶结构,热稳定性好,与聚酯布之间的结合力好;表面化学镀Ni-P合金后的聚酯布对频率<20GHz的电磁波屏蔽效能可达到60dB,具有较好的电磁屏蔽效果. 关键词:聚酯布; 化学镀; Ni-P镀层; 电磁屏蔽; 表征; poly(ethylene terephthalate) fabric; electroless......
glycol(PEG)1000; [全文内容正在添加中] ......
of residue carbonate ions were also affected by the quantities of citric acid and ethylene glycol.关键词:... powders with homogeneous composition were synthesized by the low temperature combustion process based on the Pechini method. A polymeric precursor sol was formed by using citric acid and ethylene......
结果说明,乙二醇含量较低时,更有利于得到高纯度的VO2(B)相. 图1 以不同含量的乙二醇作为溶剂所合成产物的XRD谱 Fig. 1 XRD patterns of synthesized products with different contents of ethylene glycol as solvent 图2所示为以不同含量的乙二醇作为溶剂,在 180 ℃反应...同含量的乙二醇作为溶剂所合成产物的SEM像 Fig. 2 SEM images of synthesized products with different contents of ethylene glycol as solvent 图3 不同反应时间所合成产物的XRD谱 Fig. 3 XRD patterns of synthesized products......
the chelating agent was citric acid and the dispersant agent was ethylene glycol. The phase of fine particles was analyzed by XRD and the size and shape of the particles were investigated by TEM......
. Key words: nickel hydroxide nanorods; nickel nanorods; PVP(polyvinylpyrrolidone); PEG(polyethylene glycol); specific saturation magnetization; coercivity 1 Introduction Since 1991... nickel hydroxide nanorods are synthesized by a facile hydrothermal method using polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) as structure oriented agent and surface-modified reagent......
anodized at different voltages for 4 h in electrolyte of NH4F+ethylene glycol 图2 电解液为NH4F+乙二醇时外加电压对TiO2纳米管阵列生长特性的影响 Fig. 2 Influence of voltage on growing characteristics of TiO2 nanotube array in electrolyte of NH4F+ethylene glycol 电解液为NH4F+乙二醇时阳极氧化不同时间所得TiO2纳米管长度如图4所示,阳极氧化时间5 s,30 s,5 min,10 min,30 min,1 h,2 h,4 h相应的纳米管长度分别为84 nm,105 nm,300 nm,500 nm,1.5 μm,2.5 μm,4 μm,4 μm.随着氧化时间的延......
="ChDivSummary">This paper describes an ethylene glycol(EG)-assisted approach to the ultralong Sb2S3 nanowires,formed by a simple hydrothermal reaction between SbCl3 and Na2S in the presence of distilled... was discussed.The effects of volume ratio of ethylene glycol/water on the morphology of Sb2S3 nanowires were also investigated.Diffuse reflectance spectrum result shows that the final products have an apparent......
羟基化多聚物Fe(Ⅲ)-O-OH.PEG的添加提高了浸出体系中细菌浓度和Fe3+浓度,加速了黄铜矿的溶解. 关键词:黄铜矿;聚乙二醇;氧化亚铁硫杆菌;生物浸出;表面活性剂 中图分类号:TF111.31 文献标志码:A Effect of polyethylene glycol on chalcopyrite bioleaching...) Abstract: Polyethylene glycol (PEG) was used to improve the bioleaching rate of chalcopyrite by Acidithiobacillus ferrooxidans (At.f) strain XZ11. The effect of PEG on the Fe2+ oxidizing activities......