文章摘要
Research on NBR Compounds with High-temperature Resistance and Low Compression Sets for Main Drive seal of Shield Machine/TBM
Received:January 26, 2024  Revised:January 26, 2024
DOI：10.12136/j.issn.1000-890X.2024.11.0824
Key Words: shield machine；TBM；main driver seal；NBR；high-temperature resistance；compression set
Author NameAffiliationE-mail
DINGPANPAN* 北京橡胶工业研究设计院有限公司 dingpan1983@126.com 
JI MEIQIN 北京橡胶工业研究设计院有限公司  
ZHANG BIN 北京橡胶工业研究设计院有限公司  
WANG YONGWEI 北京橡胶工业研究设计院有限公司  
LIU DONGLIANG 北京橡胶工业研究设计院有限公司  
WANG NAN 北京橡胶工业研究设计院有限公司  
ZHAO TIANQI 北京橡胶工业研究设计院有限公司  
JIANG YUNPING 北京橡胶工业研究设计院有限公司  
Hits: 316
Download times: 150
Abstract:
      The effect of raw rubber system，reinforcement system，and curing system on the nitrile rubber（NBR） compounds for the main drive seal of shield machine/full section tunnel boring machine（TBM） was investigated.The results showed that the process properties of sulfur/accelerator ZBEC/accelerator TETD system，sulfur/accelerator CBS/accelerator TETD system，and sulfur/peroxide DCP/accelerator EZ/accelerator MBTS system compounds were good and could meet the requirements of seamless segmented vulcanization process.The tensile properties of NBR3350 vulcanizate and NBR N31/NBR N32 combined vulcanizate were better.The tear resistance of NBR N31/NBR N32 combined vulcanizate was superior to that of NBR3350 vulcanizate.As the dosage of sulfur increases，the hardness of vulcanizate increased，the rebound value decreased，the tear resistance，aging resistance and wear resistance were reduced，the high-temperature compression set first decreased and then increased，the compression heat generation decreased，and the oil resistance showed an increasing trend.With an increase in the dosage of accelerator ZBEC，the tensile properties of vulcanizate were improved，the tear resistance，aging resistance and wear resistance were reduced，the high-temperature compression set decreased，the heat generation were reduced，and the oil resistance was slightly reduced.After replacing silica with carbon black N774，the tensile properties of vulcanizate were improved，the high-temperature compression set decreased，and the wear resistance did not change significantly.Keyword：TBM, Shield machine;main drive sealing;Non-trace segmental vulcanization;NBR; seals with large diameter;
View Full Text   View/Add Comment  Download reader
Close