查询词典 silica

Leading products: refining quartz sand, fused silica, microsilica, green and black sand particle size, such as silicon carbide.

主导产品有：精制石英砂、熔融石英、硅微粉、绿色和黑色碳化硅粒度砂等。

Advantageous physical and chemical characteristics, the highly purified and ultra-fine fused spherical quartz powders (spherical silica powder—SSP) become indispensable for packing and sealing materials in LSI and SLSI. The actuality of research and development of SSP in China is studied and the international situation of production is also introduced briefly.

高纯超细熔融球形石英粉由于具有高纯度、高耐热、高耐湿性、高可靠性、高填充量、低粘度、低放射性、低应力、低膨胀、低摩擦系数等优越的物理化学性能，在大规模、超大规模集成电路的基板和封装料中，成了不可缺少的优质材料。

Then dendrimer-like polyamidoamine on the silica gel surface was prepared using Micheal addition of the amino and methyl acrylate,and ester-exchange of ethylene diamine and the ester group.

用硅烷偶联剂对硅胶表面进行氨基功能化，利用氨基与丙烯酸甲酯发生的Michael加成反应和乙二胺与酯进行的交换反应在硅胶表面合成了聚酰胺-胺树状大分子。

Then dendrimer-like polyamidoamine s based on the silica gel surface were prepared using Micheal addition of the amino and methyl acrylate,and ester-exchange of ethylene diamine and the ester group.

用硅烷偶联剂对硅胶表面进行氨基功能化，利用氨基与丙烯酸甲酯发生的Michael加成反应和乙二胺与酯进行的交换反应在硅胶表面合成了聚酰胺-胺树状大分子；利用红外光谱对PAMAM-SG的结构进行了表征，研究了溶液pH值、ρ(Ni2+)和温度对PAMAM-SG吸附Ni2+能力的影响。

DTA and TGA show that boehmite decomposes at 400500℃, and there are no thermal change in pure alumina gel, pure silica gel and composite gels beyond 500-600℃.

DTA和TGA表明，不论单组分膜还是复合膜，在400-500℃左右发生勃姆石的分解，500-600℃以后没有明显的热变化。

The beneficial effects of a fairly basic slag for suppressing silica reduction and fluorine volatilization in blast-furnace smelting of fluorine-bearing iron ore are discussed in the light of the present results.

从三元系中等SiO_2活度线可以看出提高碱度可大大降低SiO_2的活度，因而可以对渣中氧化硅的还原和氟的揮发起有效的抑制作用。

To high-quality products, first-class service to the community to provide all kinds of rubber products: coal mine seals used machine tools, oil, acid and alkali-resistant, fire-retardant products; road traffic safety campaign with cushion, of Carnarvon Road, the car park with positioning , For angle; construction machinery seals and various high temperature, wear-resistant rubber products; filter by supporting the consumption of the gate plate and various ring; design and production of various silica, fluoride rubber, polyurethane Products.

以优质的产品，一流的服务向社会提供各类橡胶制品：煤矿机床用密封件，耐油、耐酸、耐碱、阻燃制品；交通道路用系列安全缓冲垫，分道体，停车场用定位器，护角；工程机械用密封件及各类耐高温、耐磨橡胶制品；压滤机用配套的食用大栅板及各种密封圈；设计生产各种硅胶、氟橡胶、聚氨酯制品等。

The result indicated that not only the purity of silica materials was important to luminescence of phosphor but also the finestiny, magnesium materials were not so important only when they were A.R. degree. Doping of Gd3+ helped to enhance the long-lasting phosphorescence of phosphor .

掺加Gd~(3+)离子有助于发光材料余辉性能的提高，并且当Gd~(3+)/ Dy~(3+)=3 ： 2时，亮度较不添加Gd~(3+)的Sr_2MgSi_2O_7： Eu~(2+)，Dy~(3+)有大辐提高，这是由于Eu~(2+)与Gd~(3+)之间存在能量传递作用。

The silica surfaces polished with ion beam of 400ev energy and 100mA density in 35°incident angle for 2hrs was found to have a roughness less than 0.5nm . The SFM was also used to measure the surfaces to be bonded by SAB method and the deformations of the surfaces during contact each other. The micro roughness of the surfaces was found to produce great effect on the SAB strength. The rougher the surfaces are, the weaker the bonding forms.

本文首先将原子力显微镜应用于一种新的超光滑表面离子束抛光的工艺研究，搞清了表面纳米级微观形貌与离子束抛光参数之间的关系，在离子能量为400V、束流密度为100mA和入射角为40°时，经过两个小时以上的抛光，硅（111）表面微观形貌在1μm×1μm的范围内从抛光前的5nm下降到0.4nm。

Fig. 1 XRD patterns of silica gel Gand GBST.

图1 硅胶G和负载纳米钛酸锶钡的 XRD 图谱。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。