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요약정보
氯丁橡胶对NR/NBR阻尼性能的影响 / Influence of chloroprene rubber on damping properties of NR/NBR
Resource Type
Academic Journal
Authors
夏铭辰
;
王文俊
;
王栋栋
;
李娜
;
孙成
;
张景阳
;
薛美玲
;
XIA Mingchen
;
WANG Wenjun
;
WANG Dongdong
;
LI Na
;
SUN Cheng
;
ZHANG Jingyang
;
XUE Meiling
Source
弹性体 / China Elastomerics
. 32(6):29-33
Subject
天然橡胶/丁腈橡胶
阻尼性能
氯丁橡胶
力学性能
Language
Chinese
ISSN
1005-3174
Online Access
Find it @ DONGA
초록
基于天然橡胶/丁腈橡胶(NR/NBR)存在不连续的两个高、低温阻尼温域区,给定NR/NBR的质量比为70/30,采用氯丁橡胶(CR)对其进行了阻尼改性研究.通过拉伸/压缩循环、动态力学损耗和压缩生热对改性效果进行了表征,并考察了CR用量对NR/NBR硫化特性和力学性能的影响.结果表明,随着CR用量的增加,NR/NBR拉伸/压缩循环过程的滞后能量密度(HED)和滞后能量损失效率(HELE)均增加,且提高幅度在压缩循环过程中更为明显,表明体系的阻尼性能提高、且在压缩形变时更有效.30份CR使NR/NBR的波谷区域明显提升,改善了其在-43~0℃的阻尼性能,同时也使并用胶在压缩生热实验中的永久变形增大、最终温升显著提高.此外,CR使NR/NBR硫化胶的焦烧时间和硫化时间缩短、交联程度下降、拉伸和撕裂强度以及断裂伸长率下降、200%定伸应力稍增加.
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