摘要
研究海上运输管道柔性接头内部弹性体用胶料的配方设计。通过对柔性接头内部弹性体用胶料的橡胶[丁腈橡胶(NBR)]、补强填料、增塑剂、硫黄和促进剂进行正交试验分析,确定其最优组合为NBR6240和6280用量分别为60和40份,炭黑N330用量为55份,炭黑N550用量为12份,己二酸二辛酯用量为7份,硫黄和促进剂用量为1.8份(硫黄、促进剂CBS和促进剂TMTD用量分别为0.3,1和0.5份)。该组合配方的NBR胶料的拉伸强度达到22.6 MPa,海水老化后拉伸强度变化率(绝对值,后同)和拉断伸长率变化率以及油浸泡后体积变化率较小,该组合配方胶料的性能满足柔性接头内部弹性体的性能要求。
The formula design of internal elastomer compound for the flexible joint of the marine transportation pipeline was studied.The rubber[nitrile butadiene rubber(NBR)],reinforcing filler,plasticizer,sulfur and accelerator of the compound were analyzed through the orthogonal test,and the optimized formulation was determined as follows:the amount of NBR6240 and 6280 was 60 and 40 phr,respectively,the amount of carbon black N330 was 55 phr,the amount of carbon black N550 was 12 phr,the amount of dioctyl adipate was 7 phr,and the amount of sulfur and accelerator was 1.8 phr(sulfur,accelerator CBS and accelerator TMTD dosages were 0.3,1 and 0.5 phr,respectively).The tensile strength of the optimized NBR compound reached 22.6 MPa,and the change rates(absolute value,same after)of the tensile strength and elongation at break after seawater aging and the change rate of the volume after oil immersion were small.The performance of the optimized compound met the performance requirements of the internal elastomer for flexible joints.
作者
马美琴
刘保权
尹婷
石臣刚
孙建帮
MA Meiqin;LIU Baoquan;YIN Ting;SHI Chengang;SUN Jianbang(Sino Rubber Technology Co.Ltd.,Hengshui 053000,China)
出处
《橡胶工业》
CAS
2023年第2期123-129,共7页
China Rubber Industry
基金
国家发展和改革委员会科技攻关项目(CCL2020HNFN0183)。
关键词
柔性接头
弹性体
丁腈橡胶
海上运输管道
正交试验
flexible joint
elastomer
NBR
marine transportation pipeline
orthogonal test
