查询词典 crystallization

The effects of nucleating agents on glasslike crystallization and crystallization were studied by DTA and XRD.

用差热分析、X射线衍射等测试方法，研究晶核剂对玻璃态析晶和结晶形态的影响。

Research results of phase equilibrium for the KOH—K〓CrO〓—H〓O system, the KOH—KAlO〓—H〓O system and the KOH—K〓CrO〓—KAlO〓—H〓O system revealed that lower concentration of KOH was beneficial for the crystallization of KAlO〓, and within a certain range, higher concentration of KOH was favorable for the crystallization of K〓CrO〓.

KOH—K〓CrO〓—H〓O体系，KOH—KAlO〓—H〓O体系和KOH—K〓CrO〓—KAlO〓—H〓O体系相平衡研究结果表明，较低的氢氧化钾浓度有利于铝酸钾结晶析出，一定范围内，较高的氢氧化钾浓度有利于铬酸钾结晶析出，因此，通过控制氢氧化钾浓度可以使铬酸钾—铝酸钾—氢氧化钾得以分离。

Experimental result makes clear:(K2SO4 of 1) this system, leonite, what the salt such as Langbenite and MgSO4.H2O can form primary nucleus is primary the area that become salt and area of deliquescent balance photograph are put in apparent deviate, among them K2SO4 narrows into saline area, and the accretion that Leonite and MgSO4.H2O crystallization area all have different rate;(2) is evaporating in crystallization process, the existence that plants into saline brilliant makes the area becoming salt of this salt is compared primary the area that become salt expands somewhat because;(3) becomes saline division patulous, salify area appears the crisscross of different level.

实验结果表明：(1)该体系K2SO4，Leonite，langbenite和MgSO4.H2O等盐能够形成初级晶核的初级成盐区和溶解平衡相区存在明显偏离，其中K2SO4成盐区域缩小，而Leonite和MgSO4.H2O结晶区域均有不同程度的增大；(2)在蒸发结晶过程中，成盐晶种的存在使该盐的成盐区比初级成盐区有所扩展；(3)由于成盐区的扩展，使成盐区域出现不同程度的交错。

The determination demonstrated that the anionic polymerization of ε-caprolactam under 230℃ leaded to a mesomorphous form of PA6; the EPDM had heterogeneous nucleation effect on the crystallization of dispersed PA6 phase; in situ polymerization could further reduce crystallization enthalpy of PA6 component on the level of reactive compatibilization.

研究表明，230℃下进行阴离子聚合得到的PA6为β-介晶型；EPDM对这种分散在橡胶相中的PA6的结晶具有异相成核作用；原位聚合可在反应增容的基础上使得共混物中PA6的结晶焓进一步降低。

In the initial crystallization stage which the growing speed of supersaturation was more than the relaxing speed,the crystallization was situated in kinetic region of phase transformation reaction control.In this region, and the oversaturation of solution was going from up to down.

过饱和生成速度大于消除速度的结晶初期，结晶过程处于相变反应控制的动力学区域，该区域和溶液过饱和度由上升到下降。

Finally,the crystallization metastable zone of cefazolin sodium pentahydrate in water and the mixture of water and 2propanol at different temperatures was determined by the laser method.Valuable thermodynamics data for the industrial manufacture of cefazolin sodium pentahydrate were obtained.KEY WORDS Cefazolin sodium pentahydrate;Crystallization;Thermodynamics;Metastable zone

本文测定了5~35℃范围内头孢唑林钠在不同配比的水乙醇、水丙酮、水异丙醇混合溶剂中的溶解度数据，采用热分析仪测定了头孢唑林钠的差热分析数据，推导了头孢唑林钠溶解度模型，为头孢唑林钠的结晶分离提供了热力学数据。

In this paper the optimal conditions for sublimate crystallization refining of pyromellitic dianhydridewas studied,and on the basis of PMDA equilibrium vapor pressure under the contant temperature,the mathematical correlation for sublimate crystallization conditions was deduced.

研究了均苯四酸二酐凝华结晶精制的最佳条件，并以均酐在定温下的平衡蒸汽压为基础，推导出凝华结晶条件数学关系式。

During the non-isothermal crystallization, compared with common PE, the cooling rate had less impact on the crystallization rate of mPE. Second, the sensitivity of the melt viscosity of mPE to the shear rate was poor, and the introduction of long chain branches onto the molecular structure of mPE could improve the dependence of their melt viscosity on both shear rate and temperature. In the extensional rheometric tests, the occurrence of phenomena of'strain hardening' relied on the structure of linear long chains, and mPE didn't show the behavior of'strain hardening', which implied that the melt strength ofmPE was poor.

其中通过共聚方法在mPE分子中引入非线性长支链结构，对提高mPE熔体粘度对温度的依赖性作用较为明显，而对提高mPE熔体粘度对剪切速率的依赖性以及对提高mPE熔体强度作用较弱；采用共混方法在mPE体系中引入线性长支链结构，则对提高mPE熔体粘度对剪切速率的依赖性以及提高mPE的熔体强度的作用较为明显，而对于提高mPE熔体粘度对温度的依赖性作用相对较弱。

By the study of the crys-tallization kinetics it is concluded that the crystallization in spherulitic in nature,carbon fiber promotes the crystallization of PP by decreasing it's crystalline surface free energy.

结晶动力学表明：结晶生长本质仍是球晶机理，促进聚丙烯结晶的原因是碳纤维使结晶过程的表面自由能降低。

When the PEG block begins to crystallize, the PLLA phase is always partially solidified and the presence of the spherulitic microstructure of PLLA profoundly restricts its crystallization behavior, which results in that the overall crystallization process does not obey the Ozawa equation.

此外，不同降温速率下的结晶形貌研究结果表明，随着降温速率的增加，晶体经历了从环带球晶、环带和十字消光的混合球晶到典型的十字消光球晶的转变，并且球晶的尺寸也明显变小。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。