degree of polymerization是什么意思

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Optimization of polyester condensation process and reactor design;

聚酯缩聚工艺及反应器优化分析

The Structure Characters of the Sulfonated Condensation Polymer Series High Performance;

缩聚型磺酸系列高性能外加剂的结构特点

The pH value of the solution was adjusted,and the co-condensation reaction was taken place between the hydroxy groups forming transparent organic-inorganic hybrid films on polycarbonate(PC).

以甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)水解聚合产物作为主要成膜物质,引入正硅酸乙酯(TEO S)水解产物硅溶胶作为无机增强物,调节两种混合溶液pH值,利用两者羟基之间的共缩聚反应在聚碳酸酯(PC)板表面制备有机/无机复合透明耐磨薄膜;采用TG/DTA、FT-IR、SEM及UV-V IS对成膜过程、薄膜性能与结构进行表征。

In this paper , the PLA-BDO-PLA block prepolymer was synthesized through reaction of condensation polymerization using lactic acid and 1,4-butanediol and macromonomer of polyurethane acrylate was synthesized using prepolymer, isophorone diisocyanate and hydroxyethylmethylacrylate.

利用乳酸与1,4-丁二醇(BDO)的缩聚反应,合成了PLA-BDO-PLA型嵌段预聚物,该预聚物与异佛尔酮-二异氰酸酯(IPDI)、甲基丙烯酸β羟乙酯(HEMA)反应,得到了聚氨酯丙烯酸酯大分子单体,将其固化制得聚氨酯材料。

With the aim of enhancing the nonlinear optical property of poly (thiophene methines), poly[(thiophene-2,5-diyl)p-(N,N-dimethylamino) azobenzylidene] (PTDMAAB) is prepared from 4-aldehyde-4'-dimethylamino azobenzene (ADMAA) and thiophene through condensation polymerization reaction.

为了提高聚噻吩甲烯的非线性光学性能,通过4-醛基-4'-二甲胺基偶氮苯和噻吩的缩聚反应,合成了聚噻吩对二甲氨基偶氮苯甲烷(PTDMAAB),再用PTDMAAB与四氯苯醌发生脱氢反应合成了侧链含偶氮的聚噻吩甲烯(PTDMAABQ)。

Then,the Schiffs base was condensation polymerization with 4,4'-diaminodiphenylmethane,4,4'-diamino-diphenylether or 4,4'-diaminodiphenyl sulphone respectively to prepare three novel polyaramides.

以该二元羧酸西佛碱分别与 4 ,4’ -二氨基二苯甲烷、4 ,4’ -二氨基二苯醚、4 ,4’ -二氨基二苯亚砜进行缩聚反应 ,制备了三种新型的聚芳酰胺 ,所得聚芳酰胺可溶于强极性溶剂 ,并具有一定耐热性能。

The influence factors on the polyester polycondensation vaccum system and their treatment;

影响聚酯缩聚真空的因素及处理

Kinetics of the Hydrolysis and Polycondensation of Alkoxysilanes;

硅氧烷的水解-缩聚反应动力学

Study on surface modification of PBT with grafted nano-SiO_2 by polycondensation;

缩聚表面接枝纳米SiO_2改性PBT

Direct synthesis of ploy(L-lactic acid) by melt polycondensation;

熔融缩聚合成聚L-乳酸的研究

Chemical reaction kinetics of melt polycondensation of lactic acid under microwave irradiation;

微波辐射乳酸熔融缩聚反应动力学

Engineering analysis of viscosity increasing process of polyester melt polycondensation;

聚酯熔融缩聚增黏过程的工程分析

Cashew shell oil - phenol - formaldehyde resin, synthesized with condensation polymerization of industrial cashew nut shell liquid (CNSL) and formaldehyde possesses good property - price ratio for paint application.

采用工业腰果壳液(CNSL)和甲醛缩聚反应合成具有良好性价比的腰果酚甲醛树脂,并以此配制了腰果树脂漆。

The results show that the MQ resin has condensation polymerization .

采用三甲基氯硅烷和正硅酸乙酯合成了MQ硅树脂,使用FT-IR、29Si-NMR和GPC对MQ硅树脂的结构进行了分析,并用FT-IR对采用该硅树脂制备的有机硅压敏胶结构进行了分析,用TG法对有机硅压敏胶的热性能进行了研究;结果表明,MQ硅树脂与端羟基的甲基硅橡胶进行了缩聚反应,该树脂的结构特性适用于有机硅压敏胶的制备,所制得的有机硅压敏胶有较好的初粘性能、剥离强度和耐高温性能。