封端指的是一个基团与端基反应。
但是, 用硅烷化试剂封端(End-capping)在多数情况下并不能完全覆盖表面硅羟基, 而且此种情况下的封端基团在色谱过程中很容易被洗脱下来[6].
基于46个网页-相关网页
When hydroxyalkyl terminated polysiloxanes are used to modify WPU,hydrolysis resistance performance can be reached because of the Si-C-O bond formation.
而用羟烃基封端聚硅氧烷则得到的是Si-C-O键型,耐水解性好。
参考来源 - 有机硅改性水性聚氨酯的研究The results showed that termination had little influence on thermal properties.
实验表明:封端后对产品热性能影响不大。
参考来源 - 溴化环氧树脂的合成与性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
简要介绍了不饱和端羟基聚醚的封端方法。
The method of blocking unsaturated polyether has been described.
本发明涉及一种以苯乙烯基团封端的等规聚丙烯及其制备方法。
The invention relates to an isotactic polypropylene capped with a styrene group and a preparation method thereof.
带水剂、封端剂及其配比对产品粘度、溶解性、颜色等影响不大；
Water-taking agent, capping agent and their ratio didn't largely affect the viscosity, solubility and colourity of product.
应用推荐