丁腈吸水膨胀橡胶的制备及性能研究  

Preparation and Properties of Nitrile Water Swelling Rubber

作　　者：黄永强 原晓城 杨春翔 乔森 丛川波[3] HUANG Yong-qiang;YUAN Xiao-cheng;YANG Chun-xiang;QIAO Sen;CONG Chuan-bo(Systems Engineering Research Institute of China State Shipbuilding Cooperation,Beijing 100036,China;Tianjin Rubber Industry Research Institute CO.,LTD,Tianjin 300384,China;College of New Energy and Materials,China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]中国船舶工业系统工程研究院,北京100036 [2]天津市橡胶工业研究所有限公司,天津300384 [3]中国石油大学(北京)新能源与材料学院,北京102249

出　　处：《合成材料老化与应用》2021年第4期11-14,共4页Synthetic Materials Aging and Application

摘　　要：采用聚丙烯酰胺(PAM)、硫磺和乙二胺四乙酸二钠(EDTA-2Na)对丁腈橡胶(NBR)进行物理共混改性,通过调节三类添加剂的含量制备了不同性能的改性NBR,研究了改性NBR的硫化性能、力学性能以及吸水膨胀性能。结果表明,PAM含量增加使NBR的力学性能下降,但硫化与吸水膨胀性能略微提高;硫磺含量增加可以提高拉伸强度但断裂伸长率下降,其他性能均得到小范围提升;而EDTA-2Na的加入能高效提升NBR的吸水膨胀性能,但导致力学性能较差。与此同时改性NBR在盐度越低、温度越高的环境中,拥有更高的吸水膨胀率。Nitrile rubber(NBR)was physically modified by polyacrylamide(PAM),sulfur and ethylenediamine tetraacetic acid disodium(EDTA-2Na).Modified NBR with different properties were prepared by adjusting the contents of three additives.The vulcanization properties,mechanical properties and water swelling properties of the modified NBR were studied.The results showed that the mechanical properties of NBR decreased with the increase of PAM content,but the vulcanization and water swelling properties increased slightly.With the increase of sulfur content,the tensile strength was increased but the elongation at break was decreased,and other properties were improved in a small range.However,the addition of EDTA-2Na can effectively improve water swelling performance of NBR,but lead to poor mechanical properties.At the same time,the modified NBR has a higher water swelling rate in the lower salinity and higher temperature environment.

关 键 词：吸水膨胀橡胶 丁腈橡胶 聚丙烯酰胺 乙二胺四乙酸二钠 吸水膨胀性能 

分 类 号：TQ333.7[化学工程—橡胶工业]