1、

It is shown that tectonic stress is in favor of the chemistry environment transfer of hydrogen in coal, resulting in the decrease of aliphatic hydrocarbon and the increase of aromatic hydrocarbon in content, and accelerating the polycondensation and ordering of large molecules texture of coal.

结果表明,构造应力有利于煤中氢发生化学环境转移,使脂肪烃含量相对减少、稳定的芳香烃含量相对增加,促进煤大分子结构缩合度和有序度增加。

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The polycondensation of p-phenylenediamine and terephthaloyl chloride in amide solvent system has been studied.

本文研究了在酰胺-盐溶剂体系中对苯二胺与对苯二甲酰氯的缩聚反应,溶剂对缩聚反应的影响以及溶剂体系与对苯二甲酰氯的副反应。

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The polycondensation of Terephthaloyl chloride and p-phenylenediamine hydrochloride in nmp-cacl_2 solvent system

对苯二胺盐酸盐与对苯二甲酰氯在NMP-CaCl2溶剂体系中的缩聚反应

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Adiabatic determination of kinetic parameters on polycondensation reaction of paraphenylene diamine and Terephthalyl chloride

用绝热法测定对苯二胺与对苯二甲酰氯缩聚反应的动力学参数

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The experimental results showed that the obtained PET/ MMT nanocomposites exhibited fairly good overall properties when the MMT addition was 2.5% by mass fraction and the polycondensation terminal temperature was 250 ℃.

结果表明:MMT的添加质量分数为2.5%,缩聚反应终温250℃时,PET/MMT纳米复合材料具有较好的综合性能。

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Methods: The polycondensation of amino acids in liposome system as well as in aqueous buffer solution was started from amino acid-N-carboxyanhydrides ( NCAs).

方法:活化氨基酸的聚合反应在囊泡体系和对照缓冲溶液中进行,反应产物用高效液相色谱-质谱联用仪进行分离检测。

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A Study of the Control of the Reacting Substance Proportion and Property of Cascade Reactor System of PC Continuous Interfacial Polycondensation

聚碳酸酯连续界面缩聚反应物配比的控制与串联反应釜特性的研究

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9、

Study on the reaction kinetics of high efficiency catalysts for pet polycondensation

聚酯高效催化剂缩聚反应动力学研究

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At the acid reaction stage the polycondensation reaction was primary and formed the macro-molecule system with the methylene or the ether linkage, and the polymerization formaldehyde decomposed completely, and as the form of methylene glycol participated in condensation reaction.

酸性反应阶段以缩聚反应为主,形成以亚甲基键或醚键联接大分子体系,聚合状态的甲醛已全部分解,并以甲二醇的形式参与缩聚反应;

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To deeply understand the kinetic and gelation process, we applied reactive bond fluctuation lattice model to simulate hyperbranched A2+ B3 polycondensation.

为了深入认识A2+B3体系的动力学和凝胶过程,我们采用反应型键涨落模型模拟A2+B3缩聚反应。

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The Effect of Tertiary Amine as Acid Acceptor on the Low-Temperature Solution Polycondensation and Copolycondensation

叔胺酸接受剂对低温溶液缩聚和共缩聚反应的影响

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Cascade reactor system possesses good property, it enables commercial continuous interracial polycondensation to be realized with satisfaction.

串联反应釜系统具有良好的特性,可以满意地实现工业规模连续界面缩聚反应。

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PLA has been produced by ring-opening polymerization of lactide or direct polycondensation of lactic acid.

制备聚乳酸常通过乳酸的直接聚合或丙交酯的开环聚合两种方法。

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Synthesis, characterization and properties of terbium complexes with the activity of polycondensation

缩聚活性的铽配合物合成、表征及其性质

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Polycondensation side line on-line adding technique was used to make the production of the existing large capacity polyester plant flexible.

采用缩聚侧线在线添加技术使现有大容量聚酯装置的生产柔性化;

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The monomeric dye with two active groups has no negative effect on solution polycondensation reaction.

双活性基团的染料单体可顺利参与溶液共缩聚反应中的链增长过程,反应活性与乙二醇相近,聚合型染料的产率和粘均分子量都很高;

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The results showed that solid sate polycondensation was effected by the content of PLLA obviously.

结果表明PLLA的含量对固相缩聚有显著影响。

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A sol containing SiO_2 particles was prepared by the base catalyzed hydrolysis and polycondensation of tetraethoxysilane ( TEOS) through sol-gel process.

通过溶胶凝胶法,在碱性条件下水解缩聚正硅酸乙酯获得含有SiO2颗粒的溶胶;

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