文章摘要
Effect of Silica on Properties of CR Compound Bonded to Brass
Received:July 19, 2017  Revised:July 20, 2017
DOI：10.12136/j.issn.1000-890X.2019.03.0194
Key Words: silica；CR；brass；adhesive properties
Author NameAffiliationE-mail
YU Kaiben National Deep-sea Base Management Center 972128054@qq.com 
LIN Guangyi* Qingdao University of Science and Technology 972128054@qq.com 
ZONG Le National Deep-sea Base Management Center  
MENG Qingjian National Deep-sea Base Management Center  
LI Tianya Qingdao University of Science and Technology  
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Abstract:
      Using thiol-regulated chloroprene rubber（CR）2442 with thiuram stabilizer as the main material and resorcinol-formaldehyde-silica-cobalt salt system as the adhesive system，the CR compound for the marine environment and bonding with brass was prepared. The effects of silica amount on the physical properties and adhesive properties of the CR compound were discussed. The results showed that，the Mooney viscosity of the CR compound increased with the increasing of silica amount，and increased significantly when silica amount reached 15 phr. The hardness of the CR compound increased with the increasing of silica amount，the tensile strength decreased，and the mass change rate increased after seawater immersion. When silica amount was 15 phr，the pull-out force of brass wire was the largest, even after seawater immersion or thermal aging. When the silica amount was 20 phr，the difference of the pull-out force of brass wire before and after seawater immersion was smaller. The suitable amount of silica for CR compound was 15 phr.
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