二氧化硅

In this paper, aiming to solve these problems and meet the developmentrequirement, firstly a series of grafted starch sizing agent with good pasting and excellentsizing performance were synthesized utilizing the cheap mealie starch as the reactants.The denatured starch, polyacrylic size combination, nanometer compound acrylic acidcopolymerization pulp with titanium dioxide, the silicon dioxide has designed a series offormulas. The results showed the polyester size had stable viscosity and excellentfilm-formation property, thus it was a good size for fiber. At last, a kind of mixed sizeswas presented to reach the satisfied results of high density and low viscosity.

本文针对当前浆料存在的问题，结合浆料发展的趋势，立足于廉价的玉米淀粉，开发制备了性能优异的接枝淀粉，该浆料上浆性能优异且退浆容易，是一种能获得较好经济效益和社会效益的绿色浆料；将变性淀粉、丙烯酸乳液聚合浆料、纳米二氧化钛和二氧化硅乳液共聚浆料组合，设计了一系列配方，在对这些配方进行了一系列性能测试的基础上，找到了一种无PVA且价格低廉的组合浆料。

Optical waveguides in silica-on-silicon are one of the key elements in optical communications.

硅基二氧化硅光波导是光通信中的关键器件。

Mesoporous silica with different morphology has been synthesis, such as films, spheres, fibers and tubules.

具有不同形貌的介孔二氧化硅，如膜、球、纤维和管已经有所报道。

A simplified 1/8 model,considering silicon dioxide and nitride process as well as stack anodic bonding and adhesive bonding processes,was developed.

这里研究了简化的1/8模型，模型考虑了二氧化硅和氮化硅生成过程及堆阳极键合和胶粘结合过程。

The vein mineralization on both areas is characterized by hydrobreccias being enveloped by silica stockworks.

关于这两个地区静脉矿化特点是由二氧化硅stockworks笼罩hydrobreccias。

This thesis is consist of two chapter, In the first chapter of this paper, We study the preparation of Silica Sols and self-Assembled Thin Films.

本论文工作共分为两部分，在第一章我们开展了用静电自组装技术制备二氧化硅纳米复合薄膜的研究。

The effects of coating temperature,dry conditions and immersion time on the performance of membranes were systematically investigated through experiment in SiO2 inorganic membranes prepared by the solgel method.

通过实验考察了在用溶胶-凝胶法制备二氧化硅无机膜的过程中涂膜温度、干燥条件及浸没时间对膜性能的影响。

Using Tween20, which was nontoxic and biodegradable, and CTAB as templates, mesoporous silica with uniform diameter pores was synthesized by solgel process.

以具有无毒、生物降解特性的吐温20为模板剂，在少量十六烷基三甲基溴化铵的复合作用下，合成了具有均一孔径的介孔二氧化硅材料

We described an improved solgel process to prepare pyridinephenol ligand (dppyBF doped silica composie glass.

利用新型溶胶凝胶方法制备一种酚基吡啶硼配合物(dppyBF掺杂的二氧化硅复合发光玻璃。

The results showed that the vibration frequency and intensity of IR and Raman spectra obviously indicated even-odd oscillation with the number of SiO_2 units.

结果发现，在红外和拉曼光谱中振动频率和强度随着二氧化硅纳米线单元个数的奇偶变化，表现出奇偶振荡现象。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。