Sequence Structure and Curing Properties of High Nitrile Rubber

被引：0
|
作者：
Guo X. [1 ]
Zheng H. [1 ]
Ma Y. [1 ]
Qiao Y. [1 ]
Pan G. [1 ]
机构：
[1] College of Environmental and Safety Engineering, Qingdao University of Science & Technology, Qingdao
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2023年 / 39卷 / 10期
关键词：
curing rate; high nitrile rubber; mechanical properties; nuclear magnetic resonance hydrogen spectroscopy; sequence structure;
D O I：
10.16865/j.cnki.1000-7555.2023.0211
中图分类号：
学科分类号：
摘要：
The sequence structure of nitrile butadiene rubber with the acrylonitrile content of more than 40% prepared by emulsion polymerization was characterized by hydrogen magnetic resonance spectroscopy, the glass transition temperature (Tg) was characterized by differential scanning calorimeter, and the molecular weight and Mooney viscosity were characterized by gel permeation chromatograph and Mooney viscometer, respectively. The sequence structure of nitrile butadiene rubber with different acrylonitrile contents and relationship between sequence structure and curing characteristics were studied. The results show that BAA sequence began to appear in high acrylonitrile butadiene rubbers with more than 40% acrylonitrile content, which was not found in low acrylonitrile rubbers, and shows an increasing trend with the increase of acrylonitrile content. However, the changes of other sequence structure contents have impact on the curing characteristics of nitrile butadiene rubber. For example, the increase of BAB sequence content will shorten the char time, and the increase of BBB sequence content will improve the molecular chain compliance of nitrile butadiene rubber and shorten the positive curing time. In summary, the performance of nitrile butadiene rubber prepared in this laboratory is superior to that of first-line products in market. © 2023 Chengdu University of Science and Technology. All rights reserved.
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页码：113 / 118
页数：5
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