查询词典 orthosilicate

While the molar ratio of WD-20 and tetraethyl orthosilicate was 0.2, the sol-fraction of the prepared nanocomposites was 6%,glass transition temperature was above 250 ℃ and the transmittance was more than 80% at the wavelength between 450 nm and 800 nm and the size of dispersed SiO2 phase was less than 100 nm.

当WD-20与四乙基原硅酸盐之比为0.2时，所制备的纳米复合材料的溶胶分数为6%、玻璃化转变温度为250 ℃以上、可见光透过率在80％以上、SiO2分散相尺寸小于100 nm。

Different conditions affecting the diameter and magnetism of synthesized composite particles were discussed such as tetraethyl orthosilicate concentration,Fe_3O_4:TEOS mole ratio,reaction temperature,stirring rate,etc.

考察了不同的制备条件对复合粒子的粒径和磁性能的影响，并借助不同的分析测试手段对复合粒子的性能进行表征。

The PMMA/SiO2 hybrid materials with the presence of chemical bond through the reaction of WD-20 with tertraethyl orthosilicate were prepared by in-situ polymerization.

深入研究了偶联剂在聚合物/二氧化硅纳米复合材料中的分散作用，制备了光透过率达90%以上的聚合物/二氧化硅纳米复合材料。

TS-1 with MFI topology has been synthesized using tetrae〓hyl orthosilicate and amorphous silica as Si sources.

分别以硅酸四乙酯和无定形氧化硅为硅源合成了具有MFI拓扑结构的TS-1分子筛。

Palmitic acid-silicon dioxide nano-composite phase change material was prepared by sol-gel process from tetraethyi orthosilicate and palmitic acid.

采用溶胶—凝胶法，以正硅酸乙酯和棕榈酸为主原料，制备了一种有机—无机纳米复合相变材料。

Nanu-SiO2 was syrtthesized though hydrolyzation-condensation of n- tetraethyl orthosilicate in organic solvent using sol-gel method.

西北工业大学理学院，西安710072摘要：采用溶胶一凝胶法，利用正硅酸乙酯在有机溶剂中的水解-缩合制备纳米SiO2。

A simple one-step procedure was described for the synthesis of mesoporous monolith and composite sphere, in which hydrolyzation of tetraethyl orthosilicate and polymerization of urea with formaldehyde occurred at the same time.

利用酸性条件下正硅酸乙酯的水解和脲醛树脂的聚合反应同时一步原位进行的方法合成了二氧化硅复合粉体(包括核壳微球结构和网状结构)和块体凝胶材料。

By optimizing the LTCVD and graft polymerization conditions, a selective and permeable membrane for dehydration of alcohol was obtained when LTCVD was performed at 175 ℃ with 5 mL of tetraethyl orthosilicate and AA grafting was carried out in solution of 7.5% AA.

通过系统研究气相沉积和接枝反应的主要条件对膜的渗透汽化性能的影响，发现当TEOS用量为5 mL，汽化温度为175 ℃时进行气相沉积，然后在丙烯酸浓度为7.5%的溶液中进行接枝聚合，制得的复合膜对醇水混合物显示了优良的分离性能。

T was prepared by two types of PDMS whose viscosities are 3 300 Pa·s and 7 000 Pa·s respectively and MA monomer, where the PDMS were crosslinked by tetraethyl orthosilicate.

PN是 2种或 2种以上的聚合物通过物理或化学交联生成的网络，网络间相互贯穿，形成微相分离的多相体系。

In this paper, a series of polysiloxanes crosslinked by tetraethyl orthosilicate, polyurethanes crosslinked by trimethanol propane, and polyurethane/polysiloxane IPNs were synthesized at the existence of catalyst at room temperature.

用FTIR研究了聚硅氧烷、聚氨酯和IPN的化学结构和固化反应动力学，用TG-IR联用技术研究了聚硅氧烷、聚氨酯和IPN的耐热性及在无氧条件下的热裂解产物、热分解反应动力学和热分解机理。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。