建议用聚合度-时间曲线来决定是快引发还是慢引发,判断链转移反应的存在。
Time graph was suggested to be used to determine the type of initiation if there exists chain transfer reaction.
利用普通自由基聚合中的链转移反应,分别制备了以羧基为端基的聚和以胺基为端基的聚(PNVP - NH2)。
Poly (N-vinylpyrrolidone) with carboxylic end groups and amino end groups (PNVP-NH2) were prepared by the chain transfer reaction in free radical polymerization.
采用本体聚合方法将丙烯酸酯单体的混合物实施热聚合制备预聚体,采用核-壳聚合法的单体投料方式同时加入链转移剂十二烷基硫酵来控制反应进程。
UV curing polyacrylate pressure sensitive adhesive was synthesized by core-shell polymerization, at the same time, chain transfer agent NDM was added for controlled reaction rate.
链转移氢、其它原子或反应种转移到反应体系的化合物中(单体、引发剂或溶剂),从而导致聚合物增长终止,这种情况称为链转移。
A growing polymer is terminated by the transferred of a hydrogen or other atom or species to it from some compound present in the system-the monomer, initiator, or solvent, as the case may be.
体系中可能存在向单体的链转移反应。
Probably there existed certain chain transfer to monomer in this system.
探讨了引发剂用量、链转移剂用量、反应温度等对共聚物阻垢性能的影响。
The effects of such factors as the dosage of initiator, dosage of chain transfer agent, and reaction temperature on the copolymer's scale inhibiting capacity are discussed.
探讨了反应温度、单体浓度、链转移剂、引发剂等因素对聚合物分子量的影响。
The influence on molecular weight of PAM of reaction -temperature, reaction time, concentration of monomer, amount of initiation and chain-transfer agent has been studied.
试验结果表明提高反应温度和选择适当溶剂可以使链转移常数增大,有利于接枝反应的进行,提高接枝效率。
The results show that chain transfer constant depends on reaction temperature and solvent. High temperature favors graft copolymerization, and enhances the efficiency of grafting.
实验结果表明,链转移法合成含氯接枝共聚物过程中,反应温度、反应时间、引发剂浓度、氯含量及单体含量是重要的影响因素;
The results show: that the effects of chlorine content of CPE, reactive time, initiator concentration and monomer concentration on the reaction are critical;
采用溶液聚合法合成了高固体分低粘度的羟基丙烯酸树脂(HAR),详细讨论了引发剂、链转移剂、反应温度、溶剂等对HAR粘度的影响。
Hydroxyl acrylic acid resin (HAR) with high solid and low viscosity was polymerized from an appropriate acrylic acid monomer in solution.
探讨了反应温度、单体浓度、链转移剂、引发剂等因素对聚合物分子量的影响。
The influence on molecular weight of PAM of amount of solvent, initiation and chain-transfer agent has been studied.
磨耗不仅会导致高分子链的断裂,而且可能会发生链转移反应和大分子自由基的异构化反应。提出了胶料磨耗是机械力引发的具有链式反应特征的力化学反应的结果。
The results show that the abrasion process is similar to its aging by heat and oxygen. The abrasion not only resulted in the fragmentation of macromolecule chain, but also would lead to ch…
磨耗不仅会导致高分子链的断裂,而且可能会发生链转移反应和大分子自由基的异构化反应。提出了胶料磨耗是机械力引发的具有链式反应特征的力化学反应的结果。
The results show that the abrasion process is similar to its aging by heat and oxygen. The abrasion not only resulted in the fragmentation of macromolecule chain, but also would lead to ch…
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