成长中的中国小家电市场:正在进行品牌清洗

中国小家电之市场,是总品牌甚多,然品牌集中度却不高唉。此中之缘故之一,乃甚多大家电品牌认为小家电技术低、市场推广难度高而不入其门,然却大家电的日渐微薄的利润,却使大家电品牌厂商的眼球转向小家电市场。有鉴于此, 本文就2006年的中国小家电市场的生存状况展开精辟论述。     

Nucleation effect of surface treated TiO2 on Poly(trimethylene terephthalate) (PTT) nanocomposites

A study of the nucleation effect of TiO₂ in poly(trimethylene terephthalate)/TiO₂ nanocomposite has been carried out using different theoretical models. The models were applied and developed with the aim to describe and better understand the influence of the TiO₂ dispersion on crystallization characteristics of PTT. The PTT/TiO₂ nanocomposites with untreated and surface‐treated TiO₂ were prepared by the melt mixing method. The nucleation efficiency of the TiO₂ nanoparticles has been analyzed with the use of the Avrami model and Mo's method. It was found that the PTT matrix incorporated with surface‐treated TiO₂ particles has a higher crystallization temperature and melting point than that incorporated with untreated TiO₂ particles. As per the models, unlike untreated TiO₂, surface‐treated TiO₂ particles had a lesser effect on the degree of crystallization of the PTT matrix. The TiO₂ nanoparticles act as a nucleating agent in the PTT matrix thereby reducing t_½ of the crystallization and leading to easier crystallization of the polymer. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013     

LIQUID-LIQUID EXTRACTION OF Pa(V) AND Zr(IV) BY MIXTURES OF A β-DIKETOHE AND A SULPHOXIDE FROM HTDROCHLORIC ACID MEDIA

The species involved in the solvent extraction of zirconium(IV) from hydrochloric acid medium by mixtures of thenoyltrifluoroacetone (HTTA) and dipentyl sulphoxlde (DPSO) in benzene as the diluent seems to be Zr(OH) ₂(TTA)₂(DPSO). Extraction of protactinium(V) by mixtures of HTTA and DPSO exhibits synergism but the extent of synergism is not very appreciable.     

Drain Dielectric Pocket Engineering: its Impact on the Electrical Performance of a Hetero-Structure Tunnel FET

Silicon - In this paper, a simulated Si0.6Ge0.4/Si hetero-structure double gate tunneling FET with drain dielectric pocket (DDP-SiGe-TFET) is reported for the first time. The high-k (HfO2)...     

Effect of the Heating Rate on the Relative Rates of Sintering and Crystallization in Glass

The sintering of glass can sometimes be impeded by crystallization. In the optimum process the glass should sinter to full density before the onset of crystallization. In an earlier paper we showed how sinter-forging experiments can be used to investigate the coupling between densification and crystallization. Here we demonstrate that increasing the heating rate can delay crystallization so that a certain glass can sinter to full density.