摘要
以丁腈橡胶NBR 4155为基体,研究了硫化剂S-80和补强剂炭黑N330的用量对其硫化特性、力学性能和阻尼性能的影响。结果表明,硫磺含量增加时,NBR的硫化速率加快,焦烧期缩短,加工安全性下降,硬度和定伸应力持续上升,玻璃化转变区域向高温方向移动并且损耗因子峰值减小,拉伸和撕裂强度在用量为1.0份时达到最高。炭黑N330对NBR的补强效果显著,使硬度和定伸应力大幅提升,但用量超过40份后会发生团聚,且对阻尼性能有不利影响,当炭黑用量由20份增加到60份时,损耗因子峰值由1.47降至0.75,有效阻尼温域由34.2℃降到31.3℃。
The effects of the amount of S-80 and carbon black N330 on the vulcanization characteristics,mechanical properties and damping properties of NBR 4155 were studied.The results showed that with the increase of S-80 content,vulcanization speed of NBR was accelerated,and the scorch period was shortened,and the processing safety was reduced,and the hardness and modulus continued to rise,and the glass transition region shirfted to the high temperature direction and the peak value of loss factor decreased,and the tensile and tear strength reached the highest when the amount was 1.0 phr.The reinforcing effect of carbon black N330 on NBR is remarkable,which greatly improves the hardness and tensile stress.However,when the amount of carbon black exceeds 40 phr,agglomeration will occur and has an adverse effect on the damping performance.When the content of carbon black increases from 20 phr to 60 phr,the peak loss factor decreases from 1.47 to 0.75,and the effective damping temperature range decreases from 34.2℃to 31.3℃.
作者
王清鑫
李帅杰
李瑜
孙昭宜
王国荣
WANG Qingxin;LI Shuaijie;LI Yu;SUN Zhaoyi;WANG Guorong(Naval University of Engineering Department of Basics,Wuhan 430033,China;Naval University of Engineering College of Naval Architecture and Ocean,Wuhan 430033,China)
出处
《弹性体》
CAS
北大核心
2022年第5期49-55,共7页
China Elastomerics
基金
海军工程大学自主研发计划项目(425317T007)。
关键词
丁腈橡胶
硫磺
炭黑
力学性能
阻尼性能
NBR
sulfur
carbon black
mechanical properties
damping properties
