助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   modified silica 的翻译结果: 查询用时:0.006秒
图标索引 在分类学科中查询
所有学科
有机化工
轻工业手工业
更多类别查询

图标索引 历史查询
 

modified silica
相关语句
  改性氧化硅
     Two kinds of methyl modified silica xerogels were prepared by mixing SiO 2 colloidal suspension deriving from basic catalyzed hydrolysis of TEOS (tetraethoxysilane) and siloxane polymer solution prepared from acid catalyzed hydrolysis of MTES (methyltriethoxysilane) or DDS (dimethyldiethoxysilane). The xerogels were tested at the small angle x ray scattering (SAXS) station of Beijing Synchrotron Radiation Facility.
     以正硅酸乙酯 [Si(OC2 H5) 4,TEOS]为前驱体制备SiO2 悬浮液 ,分别以甲基三乙氧基硅烷 [CH3Si(OC2 H5) 3,MTES]和二甲基二乙氧基硅烷 [(CH3) 2 Si(OC2 H5) 2 ,DDS]为前驱体制备硅氧烷聚合物溶液 ,通过混合法得到两种不同的甲基改性氧化硅凝胶 .
短句来源
  改性微粒
     Structure of Modified Silica Sol
     改性微粒硅溶胶的结构和形态
短句来源
     Ultrafiltration Concentration and Stability of Microparticle Boron Modified Silica Sol
     硼改性微粒硅溶胶的超滤浓缩及稳定性
短句来源
     In order to improve the stability of high concentration microparticle boron modified silica sol,anionic or non-ionic surfactants were applied,0.01% carboxylic methyl cellulose was found to be the best dispersant and had almost no effect on microparticle boron modified silica sol so that it was in favor of this product to be commercialized.
     实验采用阴离子及非离子表面活性剂来提高高浓度硅溶胶的稳定性,结果表明,用量0.01%的羧甲基纤维素分散效果最佳,对硼改性微粒硅溶胶的性能几乎没有影响,有利于实现商品化。
短句来源
     The principle of improvement the stability of aluminum ion modified silica based microparticlate sol could be explained as to provide some amount of positive charges on the surface of gel, the electro-potential of the gel particle surface were changed, which could prevent the dual electrocity layers from attack by the sodium ions.
     铝改性微粒硅胶可以有效的提高微粒溶胶的稳定性,其原理是在胶体颗粒表面提供一定量的正电荷,改变硅溶胶离子表面的电势,遏制钠离子对胶体双电层的破坏。
短句来源
     Ultrafiltration was used to condense microparticle boron modified silica sol because this method made microparticle boron modified silica sol not easy to denaturalize. The optimal ultrafiltration was carried out by using cellulose acetate membrane with molecular weight 10 million and operation pressure 3.5kPa at room temperature. The microparticle boron modified silica sol could be condensed to about 15%~16% at this ultrafiltration conditions.
     选用超滤法浓缩硼改性微粒硅溶胶,在室温、操作压力3.5 kPa的条件下、选用截留相对分子质量为10000的醋酸纤维素超滤膜浓缩硼改性微粒硅溶胶,其截留率大于93%,可将硼改性微粒硅溶胶浓缩到15%~16%,并且硼改性微粒硅溶胶不易变性。
短句来源
更多       
  “modified silica”译为未确定词的双语例句
     The modified silica nanoparticles were characterized by elemental analysis,TEM,FTIR,~(13)C CP/MAS NMR and ~(29)Si CP/MAS NMR to give evidence of the grafting of MPS to the nanoparticles.
     用元素分析、FTIR、13C CP/MAS NMR和29S i CP/MAS NMR等手段对修饰过的S iO2纳米粒子进行表征,以确证MPS接枝在S iO2纳米粒子上。
短句来源
     Results The amplification success rates of 4 methods were different from 20% to 100%,and the effects of extraction based on silica-based spin columns(60%,100%) were distinctly better than those based on silica particles(20%,40%). The effect of extraction based on modified silica particles was the worst,and based on modified QIAquick was the best among 4 methods.
     结果:4种方法的扩增成功率从20%~100%,基于硅离心柱法的抽提效果(60%,100%)明显的优于基于硅粒法(20%,40%),其中Modified Silica Particles Method的效果最差(20%),Modified QIAquick Method的效果最好(100%)。
短句来源
     Determination of a New “Chuan Hua 018” Pesticide by Normal Phase Liquid Chromatography on Dynamically Modified Silica Gel
     用动态改性硅胶的液相色谱法分析新杀菌剂“川化018”
短句来源
     The structures of aluminium modified silica sol(AMS) and boron modified silica sol(BMS) were investigated with IR,()~(29)Si-NMR、()~(11)B-NMR,()~(27)Al-NMR spectra and TEM(transmission electron microscopy) for the first time.
     用IR谱2、9Si-NMR1、1B-NMR和27Al-NMR谱及透射电镜对铝改性硅溶胶与硼改性硅溶胶进行了结构形态与特征的分析研究,首次提出了铝改性硅溶胶与硼改性硅溶胶的结构和形态特征。
短句来源
     This paper reports the chromatographic separation of aromatic acids and some isomers on a new stationary phase named 18-crown-6 modified silica (P18-c-6SB).
     本文报导了一种新型18—冠—6硅胶键合固定相(P18—C—6SB)在有机酸分析中的应用。
短句来源
更多       
查询“modified silica”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  modified silica
The chemically modified silica gels were packed into high-pressure liquid chromatography (HPLC) column and their separation characters were evaluated.
      
The results of studying the thickness and stability in the gravitational field are presented for model emulsion films stabilized by solid particles of aluminum stearate and modified silica.
      
For a rare case of the supermobile adsorption of benzene on the modified silica, the vibration frequency of its molecules with respect to the surface is calculated.
      
The adsorption of methanol on initial silica and modified silica samples containing large mesopores is studied by the adsorption-calorimetric method.
      
An additional silanization of the modified silica leads to coverage of silica surface areas that are free of organofluoric modifier with trimethylsilyl radicals.
      
更多          


A gas chromatographic procedure has been developed for the determination of dissolved gaseous hydrocarbons in petroleum products.Silica gel used as support was chemically modified with dimethyldichlorosilane.The essential feature of this method involved the use of a prefractionator column of one metre long packed with 13% hexadecane/fire brick,and the analyzer column composed of a column of 2 metres long packed with 16% diethyl phthalate/fire brick in series with a 2 metres long column packed with 3% hexadecane...

A gas chromatographic procedure has been developed for the determination of dissolved gaseous hydrocarbons in petroleum products.Silica gel used as support was chemically modified with dimethyldichlorosilane.The essential feature of this method involved the use of a prefractionator column of one metre long packed with 13% hexadecane/fire brick,and the analyzer column composed of a column of 2 metres long packed with 16% diethyl phthalate/fire brick in series with a 2 metres long column packed with 3% hexadecane +0.5% polyethylene glycol/chemically modified silica gel. Sixteen components of C_1—C_5 gaseous hydrocarbons dissolved in a ~200℃ petroleum fraction could be completely separated within 1 hour.The accuracy of the method expressed as meximum absolute error is 0.61%.

针对石油二次加工油品中溶解气体烃组成的分析,试制了一种以二甲基二氯硅烷处理的化学变质硅胶担体。以2米长的16%苯二甲酸二乙酯/保温砖柱串联2米长的3%十六烷+0.5%聚乙二醇/变质硅胶柱作气体烃的分析柱;以1米长的13%十六烷/保温砖柱作切割柱;配合六通阀切换的反吹流程,在1小时内可分离200℃馏分油中溶解的C_1—C_5气体烃的16个组分,定量最大绝对误差为0.61%,基本满足了石油加工工艺的分析要求。

Upon continuous stress relaxation of the filled silicone rubber, especially the vulcani-zate filled with octamethylcyclotetrasiloxane-modified silica at 260-300℃, the relative stress decreases first to a minimum and then increases, proportionally with time up to a certain limit. The change can be described approximately by the formula:f(t)/f(0) - A1e-K1e + A2e-K2t + k3t + A3Here the rate constant k2 is ascribed to the degradation of the rubber matrix, k3 to the cros-slinking of the stretched chains, k2...

Upon continuous stress relaxation of the filled silicone rubber, especially the vulcani-zate filled with octamethylcyclotetrasiloxane-modified silica at 260-300℃, the relative stress decreases first to a minimum and then increases, proportionally with time up to a certain limit. The change can be described approximately by the formula:f(t)/f(0) - A1e-K1e + A2e-K2t + k3t + A3Here the rate constant k2 is ascribed to the degradation of the rubber matrix, k3 to the cros-slinking of the stretched chains, k2 to the cleavage of the linkage connected with filler.

二氧化硅填充的硅橡胶在250—300℃作连续化学应力松弛时相对应力的变化是先衰减到一最低值而后增长。它近似地符合下列式子 f(t)/f(0)=A_1e~(-k_1l+A_2e~(-k_2l)+k_3t+A3f(t)、f(0)分别为t时和起始时的应力。k_1和k_2为应力松弛常数,分别代表与填料相连之链的断裂和胶相断裂的反应速度,k_3为应力增长常数,代表受力链的交联速度。

A scries of silica gel packing materials are prepared by bonding organic silane on the silica gel surface with different concentrations of γ-glycidoxypropyltrimethoxy silane water solutions. The graft degree of the bonded phase on these silica gelssurface arc determined by using three methods--Thermal Analysis, ElementAnalysis, and absorption in solution. The results indicate that TA is a suitable method for characterizing the graft degree of the bonded phase of these modified silica gels.

本文用热分析、元素分析及溶液吸附三种方法,对不同浓度的γ-GOPS水溶液与硅球表面接枝键合相的系列样品进行接枝度的测定。认为热分析方法是测定硅胶表面接枝度的适用方法。元素分析误差大,数值偏高。溶液吸附法只能作为比较对硅胶表面接枝量大小的相对方法。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关modified silica的内容
在知识搜索中查有关modified silica的内容
在数字搜索中查有关modified silica的内容
在概念知识元中查有关modified silica的内容
在学术趋势中查有关modified silica的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社