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property     
相关语句
  性能
    Study on the Synthesis and Property of Starch Graft Compolymers
    淀粉接枝共聚物的合成及性能研究
短句来源
    Viscoelastic Property of Viscose Blend Solution and the Structure and Property of Fiber Prepared from It
    共混粘胶的粘弹性及其纤维的成形结构和性能
短句来源
    Study on the Synthesis, Characterization and Electrorheological Property of Polymer Dispersed Particle Containing Aromatic Ring
    含芳环聚合物分散相微粒材料的合成、表征和电流变性能研究
短句来源
    Templating Synthesis and Property of Carbon and Silica-Based Functional Nanofibers
    碳、硅基功能纳米纤维的模板合成与性能研究
短句来源
    property Assessment and Function Analysis of 4151 Softener
    4151软化剂性能评价及作用浅析
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  性质
    Synthesis and Characterization of Ribavirin and Eicar Derivatives and Their Photochemical Property
    利巴韦林和EICAR衍生物的合成及其光化学性质
短句来源
    Investigation on the Crystalline Property of Blended Fibre of PET and Copolyeser
    PET和共聚酯共混纤维的结晶性质研究
短句来源
    STUDY ON DAMPING PROPERTY OF POLYVINYLCHLORIDE-POLYISOBUTYLENE OLIGOMER BLEND
    聚氯乙烯-低分子量聚异丁烯共混物的阻尼性质
短句来源
    The Syathesis and Structure of 4,5-Bis(2',4'-dinitrophenylthio)-1,3-dithiole-2-one and Its Second Harmonic Generation Property
    4,5-二(2′,4′-二硝基苯硫基)-1,3-二硫杂环戊烯2-酮的合成、晶体结构及其激光倍频性质
短句来源
    Physical Property Data of Hydrocarbons and Their Denatives and Correlations (Part 4)
    烃类及其衍生物的物性数据和关联方法(4)——临界性质、蒸气压、水中溶解度、生成自由能
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  特性
    Curing reaction property and bonding strength of epoxy resin-low molecular polyamide system
    环氧树脂/低分子聚酰胺体系的固化反应特性及胶接强度
短句来源
    Rheological Property of Partially Crosslinked Chlorinated Polyethylene——Influence of Structural Factor
    局部交联氯化聚乙烯的流变特性—结构因素的影响
短句来源
    Catalytic Property of 12-Tungstenphosphate for Ester Decomposition and Alkylation in the Liquid-Solid phase
    12-钨磷酸对液-固相酯分解及烷基化反应的催化特性
短句来源
    Study on Hydrogenation of Carbon Dioxide and Property of Cu-Zn-O Catalysts(Ⅱ)
    CO_2加氢和Cu-Zn-O催化剂的特性 Ⅱ.Cu-Zn-O催化剂处理条件和反应条件的研究
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    HMO calculation of the furfural and its property index
    糠醛的HMO计算及特性参数
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  物性
    Study on The Relationship between Physical Features of Diatom and Antiblocking Property and Others of Polyethylene Film
    硅藻土物性与聚乙烯膜开口性和其它性能关系的研究
短句来源
    Physical Property Data of Hydrocarbons and Their Denatives and Correlations (Part 4)
    烃类及其衍生物的物性数据和关联方法(4)——临界性质、蒸气压、水中溶解度、生成自由能
短句来源
    DEVELOPMENT OF A PC VERSION OF ORGANIC PHYSICAL PROPERTY ESTIMATION SYSTEM(OPES) (Ⅱ)The Software
    有机物性估算系统OPES微机版本的研制(Ⅱ)软件的开发与特性
短句来源
    Molecular Topology Structure Property Relationship Using Multilayer Neural Network
    应用多层网络进行分子拓扑结构与物性的关联
短句来源
    Study on liquid droplet size Distribution and Influence of Physical Property of New Vertical Sieve Tray
    新型垂直筛板液滴粒度分布及物性影响的研究
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      property
    The application arises because of a very strong homological property enjoyed by certain cell filtrations forq-permutation modules.
          
    The Direct Summand Property in Modular Invariant Theory
          
    Finite complex reflection groups have the remarkable property that the character field k of their reflection representation is a splitting field, that is, every irreducible complex representation can be realized over k.
          
    The proof involves showing that a nonsymmetric version of the relevant integral is annihilated by a suitable ideal of the affine Hecke algebra, and that any such annihilated functional satisfies the desired vanishing property.
          
    On Orthogonal Wavelets with the Oversampling Property
          
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    Six new compounds, namely, diacetone glucose monopalmitate, diacetone glucose monostearate, D-glucose monopalmitate, D-glucose monostearate, D-glucose tetraacetate monopalmitate,and D-glucose tetraacetate monostearate, have been synthesized and some of their properties have been described. Monoesters of glucose and higher fatty acids have been shown to be surface-active and possess good emulsifying property. Both D-glucose monopalmitate and monostearate exhibit polymorphism and each compotmd exists in...

    Six new compounds, namely, diacetone glucose monopalmitate, diacetone glucose monostearate, D-glucose monopalmitate, D-glucose monostearate, D-glucose tetraacetate monopalmitate,and D-glucose tetraacetate monostearate, have been synthesized and some of their properties have been described. Monoesters of glucose and higher fatty acids have been shown to be surface-active and possess good emulsifying property. Both D-glucose monopalmitate and monostearate exhibit polymorphism and each compotmd exists in four polymorphic forms.Diacetone glucose monopalmitate,diacetone glucose monostearate,D-glucose tetraacetate monopalmitate,D-glucose tetraacetate monostearate are all low-melting crystalline substances,and no polymorphism has been obserred among them.

    本文报告6种新化合物:二丙酮缩葡萄糖一软脂酸酯、二丙酮缩葡萄糖一硬脂酸酯、D-葡萄糖一软脂酸酯、D-葡萄糖一硬脂酸酯、D-葡萄糖一软脂酸四乙酸酯及D-葡萄糖一硬脂酸四乙酸酯的合成方法及其性质.葡萄糖与高级脂肪酸所生成的葡萄糖单酯为优越的乳化剂.D-葡萄糖一软脂酸酯及一硬脂酸酯都具有同质多晶的性质,各有4种同质多晶体.其他4种化合物都是低熔点的晶体,未发现有同质多晶现象的存在.

    Bis(epoxytetrahydrodicyclopentadienyl) ether (Ⅱ), bis(epoxytetrahydrodicyclopen-tadienyl) ethylene glycol ether (Ⅲ) and bis(epoxytetrahydrodicyclopentadienyl)-tetramethylene glycol ether (Ⅳ) were synthesized. These diepoxides can be cured with acid anhydride mixed with glycerol, the order of cure rate is: (Ⅱ) > (Ⅲ) > (Ⅳ). The temperature-deformation curves of casting from these diepoxides were determined, the thermo-mechanical property of casting from (Ⅲ) was analogous to (Ⅳ), but both were inferior to...

    Bis(epoxytetrahydrodicyclopentadienyl) ether (Ⅱ), bis(epoxytetrahydrodicyclopen-tadienyl) ethylene glycol ether (Ⅲ) and bis(epoxytetrahydrodicyclopentadienyl)-tetramethylene glycol ether (Ⅳ) were synthesized. These diepoxides can be cured with acid anhydride mixed with glycerol, the order of cure rate is: (Ⅱ) > (Ⅲ) > (Ⅳ). The temperature-deformation curves of casting from these diepoxides were determined, the thermo-mechanical property of casting from (Ⅲ) was analogous to (Ⅳ), but both were inferior to (Ⅱ). The thermo-mechanical property of casting from (Ⅱ) was approximate to dicyclopentadiene dioxide, but it was liquid and cured with faster rate.

    合成了双(环氧四氢双环戊二烯)醚(Ⅱ)、双(环氧四氢双环戊二烯)乙二醚(Ⅲ)及双(环氧四氢双环戊二烯)丁二醚(Ⅳ)。以酸酐和甘油为固化剂时,它们的凝胶速度的次序为(Ⅱ)>(Ⅲ)>(Ⅳ),测定了由它们所得铸塑料的温度形变曲线,(Ⅲ)与(Ⅳ)的热机性能相似,而(Ⅱ)则优于(Ⅲ)及(Ⅳ),而与双环氧化双环戊二烯接近,将(Ⅱ)与双环氧化双环戊二烯比较,则(Ⅱ)为液体,且具有较快的凝胶速度。

    The mechanism of solution polycondensation of MDI with TMA was preliminarily studied with model compound, by means of Semi-quantitative analysis of infra-red spectroscopy and viscosity. It is found that the polycondensation is an irreversible reaction and its important characteristic is that amido and imido groups are formed at the same time. The viscosity of the solution increases with the increasing of MDI in excess and eventually gelation takes place. All the solvents which contain active hydrogen or unshared...

    The mechanism of solution polycondensation of MDI with TMA was preliminarily studied with model compound, by means of Semi-quantitative analysis of infra-red spectroscopy and viscosity. It is found that the polycondensation is an irreversible reaction and its important characteristic is that amido and imido groups are formed at the same time. The viscosity of the solution increases with the increasing of MDI in excess and eventually gelation takes place. All the solvents which contain active hydrogen or unshared electrons are not suitable for this reaction due to the possibility of addition reaction with MDI. When the water content of the solvent used is over 0.16%, the polycondensation reaction can not normally proceed. Because of the absence of labile polyamide-acid and only CO2 evolving during the polycondensation, the storage stability of the condensation solution shows good.The high temperature treatment of the polycondensate induces the further completion of imidezation and changing of the structure of molecular aggregation, and thus causes the molecular weight to increase continuously. The addition of a certain amount of epoxide resin of low molecular weight into the polyconsation system not only reduces the fabrication temperature of the PAI about 80℃, but also improves both the property of film formed and its storage stability.

    本工作用有关模型化合物、红外分析和ln η_r/C初步研究了MDI与TMA溶液缩聚反应机理,发现反应是一个单向缩聚反应,它的重要特征是酰胺与酰亚胺基团同时形成。在反应中随着MDI的过量溶液粘度随之增加以致成为胶冻,凡带活泼氢或含未共事电子的溶剂因可能与MDI加成而不适用,当溶剂的水份>0.16%时,缩聚反应不能正常进行,由于反应中不产生易降解的聚酰胺酸,仅选出CO_2,故缩聚液的贮存稳定性较好,缩聚产物的高温热处理起着继续增长分子量,补充酰亚胺化和改变序态结构的作用。在缩聚体系里加入适量的低分子环氧树脂可使PAI的成型温度约降低80℃。

     
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