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structure of polymer    
相关语句
  聚合物结构
    Aromatic and Heterocyclic Nitriles and Their Polymers ⅩⅤ.The Polymerization of Some Aromatic Nitriles and Determination of the Structure of Polymer
    芳杂环腈及其聚合物 ⅩⅤ.不同结构芳香族腈的聚合及其聚合物结构的测定
短句来源
    The isoprene was polymerized by supported TiCl3(OC4H9) catalysts. The effects of n(Al):n(Ti), n(Ti):n(IP), polymerization temperature and process on polymerization activity were studied. The structure of polymer was characterized by FT- IR.
    以负载TiCl3(OC4H9)催化剂引发异戊二烯聚合,研究n(Al):n(Ti)、n(Ti):n(IP)、聚合温度及聚合工艺对聚合活性的影响,以FT-IR表征了聚合物结构
短句来源
    An array of linear and crosslinked polymeric Salen ligands were synthesized and combined with V(V) and Ti(IV) to catalyze asymmetric O-acetyl cyanation and trimethylsilylcyanation of aldehydes. The relationship between the catalytic efficiency and the structure of polymer was also investigated in details.
    本文合成了线型和交联型两类聚合Salen配体和多种聚合手性Salen-V(Ⅴ)和Salen-Ti(Ⅳ)络合物,以这些络合物为催化剂对醛的O-乙酰氰化反应和三甲基硅氰化反应进行了研究,探讨了聚合物结构与催化性能之间的规律。
短句来源
    The effect of condition of plasma polymerization on the structure of polymer has been examined. The reaction mechanism of plasma polymerization of ethylene is also discussed.
    探讨了等离子体聚合条件对聚合物结构的影响及其聚合反应机理。
短句来源
    Amino modified anionic emulsion copolymerization of cyclosiloxanes was favourably carried with Octamethylcyclotetrasiloxane (D\-4) as monomer, 3-Aminopropyltriethoxysilane (KH550) as amino modified monomer, dodecylbenzenesulfonate (DBSA) as catalyst and emulsifier. The structure of polymer synthesized were examined with infrared spectroscopy (IR).
    以八甲基环四硅氧烷(D4)为单体,γ-氨丙基三乙氧基硅烷(KH550)为氨基改性单体,十二烷基苯磺酸(DBSA)为酸催化剂及阴离子乳化剂,进行氨基改性有机硅阴离子乳液共聚,用红外光谱(IR)表征合成聚合物结构
短句来源
  聚合物结构
    Aromatic and Heterocyclic Nitriles and Their Polymers ⅩⅤ.The Polymerization of Some Aromatic Nitriles and Determination of the Structure of Polymer
    芳杂环腈及其聚合物 ⅩⅤ.不同结构芳香族腈的聚合及其聚合物结构的测定
短句来源
    The isoprene was polymerized by supported TiCl3(OC4H9) catalysts. The effects of n(Al):n(Ti), n(Ti):n(IP), polymerization temperature and process on polymerization activity were studied. The structure of polymer was characterized by FT- IR.
    以负载TiCl3(OC4H9)催化剂引发异戊二烯聚合,研究n(Al):n(Ti)、n(Ti):n(IP)、聚合温度及聚合工艺对聚合活性的影响,以FT-IR表征了聚合物结构
短句来源
    An array of linear and crosslinked polymeric Salen ligands were synthesized and combined with V(V) and Ti(IV) to catalyze asymmetric O-acetyl cyanation and trimethylsilylcyanation of aldehydes. The relationship between the catalytic efficiency and the structure of polymer was also investigated in details.
    本文合成了线型和交联型两类聚合Salen配体和多种聚合手性Salen-V(Ⅴ)和Salen-Ti(Ⅳ)络合物,以这些络合物为催化剂对醛的O-乙酰氰化反应和三甲基硅氰化反应进行了研究,探讨了聚合物结构与催化性能之间的规律。
短句来源
    The effect of condition of plasma polymerization on the structure of polymer has been examined. The reaction mechanism of plasma polymerization of ethylene is also discussed.
    探讨了等离子体聚合条件对聚合物结构的影响及其聚合反应机理。
短句来源
    Amino modified anionic emulsion copolymerization of cyclosiloxanes was favourably carried with Octamethylcyclotetrasiloxane (D\-4) as monomer, 3-Aminopropyltriethoxysilane (KH550) as amino modified monomer, dodecylbenzenesulfonate (DBSA) as catalyst and emulsifier. The structure of polymer synthesized were examined with infrared spectroscopy (IR).
    以八甲基环四硅氧烷(D4)为单体,γ-氨丙基三乙氧基硅烷(KH550)为氨基改性单体,十二烷基苯磺酸(DBSA)为酸催化剂及阴离子乳化剂,进行氨基改性有机硅阴离子乳液共聚,用红外光谱(IR)表征合成聚合物结构
短句来源
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  structure of polymer
The structure of polymer 2 was determined by powder X-ray diffraction analysis.
      
Change in the structure of polymer matrix of particulate-filled composites: the fractal treatment
      
Change in the structure of polymer matrix of particulate-filled composites: The fractal treatment
      
A spiral model of the structure of polymer crystals is proposed and justified and used to develop a dislocation theory of the deformation and fracture of crystalline polymers.
      
Reversible rearrangements in the structure of polymer membranes initiated by adsorbing binary liquids.
      
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The separation ahility and zone broadening effect in mobile phase have been studied by using GPC columns packed with nonporous glass beads. Polymer samples of different molecular weight could be separated to some extent on these columns. Kelley and Billmeyer indicated that the theoretical plate height describing zone broadening effect in mobile phase depends on the ' molecular weight of solute only. However, the width of peak was found to be different in samples of the same molecular weight but of different...

The separation ahility and zone broadening effect in mobile phase have been studied by using GPC columns packed with nonporous glass beads. Polymer samples of different molecular weight could be separated to some extent on these columns. Kelley and Billmeyer indicated that the theoretical plate height describing zone broadening effect in mobile phase depends on the ' molecular weight of solute only. However, the width of peak was found to be different in samples of the same molecular weight but of different molecular weight distribution in the present investigation. The reverse flow zone broadening factor, h, of benzene is somewhat larger than the straight through flow zone broadening factor, h'. This may be' explaned by the fact that the velocity profile of flow was disturbed during reverse flowing.In GPC columns packed with porous silica beads the dependence of reverse flow zone broadening factor, h, on elution volume, Ve, has been examined for a series of samples of different chemical structure, different molecular weight and different molecular weight distribution. Experimental results showed that the relation between h and Ve is universal, independent of chemical structure of polymer samples in agreement with Tung's, h > h' was also found for benzene in columns with porous packing. This indicates that the use of h value obtained from the reverse flow method may lead to slight underestimation of the zone broadening effect in GPC.The shape of reverse flow elution curve was found to be very close to Gaussian only for polymer samples with narrow molecular weight distribution within the pre-meation limit of the column used.

在以无孔玻璃珠为填料的色谱柱上研究了流动相中的分离能力和峰加宽效应。得到一定的分离能力。根据Kelley和Billmeyer描述流动相中峰加宽效应的理论,塔板高度和溶液的分子量有关而和分子量分布无关。但实验表明,对于具有相同分子量,但分子量分布不同的样品峰宽不同。苯的逆流峰加宽因子h稍大于直流峰加宽因子h′。产生这个差别的原因可以用在逆转过程中流速场受到干扰来解释。 在以多孔硅胶为填料的柱中对一系列不同分子量、分子量分布和化学结构的样品考察了逆流峰加宽因子,h,和淋出体积,Ve,之间的关系。实验表明h和Ve之间的关系具有普适性,这个结果和Tung的一致。在多孔填料柱上对苯同样得到h>h′。这个结果意味着用逆流法得到的h来校正GPC体系造成的峰加宽稍嫌不够。 只有对于分子量分布很窄的样品,其逆流淋出曲线的形状才非常接近高斯分布。

We have studied the effects of polymerization conditions on the productstructures and emphasized the ESCA characterization of PPTFE film formedin nonglow region. The results have shown the formation of a nearly--linearPPTFE in nonglow region. It has been found that the X--ray diffractionpatterns of the PPTFE formed in this region are similar to those of chemicallycharge power, pressure and plasma gases on the structure of polymer filmshave also been examined.

本工作应用ESCA研究了聚合条件对产物结构的影响,并着重讨论了在非辉光区中形成的等离子体聚四氟乙烯(PPTFE)膜的ESCA表征。发现在非辉光区中形成的PPTFE是近于线型的,并用X射线粉末照相证实,聚合膜具有类似普通PTFE的结晶结构,约有20条衍射环。另外,考察了放电功率、压力和等离子气体等对聚合膜结构的影响。

Visible and electron spin resonance spectra of the copper (I) comple of partially quaternized poly(4-vinylpyridine) by ethyl bromide(EBQP4VP) by ethyl bromide(EBQP4VP) were measured. Effects of varying temperature, Iigand/Cu(J) mole ratio, pH value of solution and the percentage of quater-nization(Q) of polymer ligand on the coordination structure of polymer-Cu (I) complex were investigated. At ligand/Cu (II) mole ratio 2011, the reduced viscosities of solution decrease with increasing pH value of solution...

Visible and electron spin resonance spectra of the copper (I) comple of partially quaternized poly(4-vinylpyridine) by ethyl bromide(EBQP4VP) by ethyl bromide(EBQP4VP) were measured. Effects of varying temperature, Iigand/Cu(J) mole ratio, pH value of solution and the percentage of quater-nization(Q) of polymer ligand on the coordination structure of polymer-Cu (I) complex were investigated. At ligand/Cu (II) mole ratio 2011, the reduced viscosities of solution decrease with increasing pH value of solution or decreasing Q value. Hence the shape of the polymer chain is markedly crimple, the oxidation activity of catalytic hydroquinone increases. In this time the coordination of polymer-Cu(II) complex [CuL4] (L is polymer ligand) is a tetragonally distorted octahedral structure.

本文测定了用溴乙烷部分季胺盐化聚4-乙烯基吡啶(EBQP_4VP)-CU(Ⅱ)络合物的可见光谱和电子自旋共振(ESR)波谱,研究了温度、配位体/Cu(Ⅱ)摩尔比、溶液的pH值和高分子配位体的季胺盐化度(Q)的变化对高分子—Cu(Ⅱ)络合物配位结构的影响。在配位体/Cu(Ⅱ)摩尔比20:1下,随着溶液pH值增大,或是Q值减小,溶液的比浓粘度下降,因而高分子链形态趋于卷曲,催化氢醌的氧化活性增大,此时高分子—CU(Ⅱ)络合物〔CuL_4〕(L为高分子配位体)的配位结构呈四方畸变的八面体结构。

 
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