文章摘要
Preparation and Properties of HNBR by Supercritical CO2 Swelling Method
Received:April 07, 2023  Revised:April 07, 2023
DOI：10.12136/j.issn.1000-890X.2025.02.0083
Key Words: HNBR；supercritical carbon dioxide；hydrogenation degree；elasticity；oil resistance
Author NameAffiliationE-mail
HONG Zitong Qingdao University of Science and Technology yuanyu20@qq.com 
ZHANG Zhuo Shandong Chambroad Sinopoly New Materials Co.Ltd  
YUAN Fei Qingdao University of Science and Technology  
ZHANG Peiting Shandong Chambroad Sinopoly New Materials Co.Ltd  
TONG Weichao Qingdao University of Science and Technology  
WANG Hui* Qingdao University of Science and Technology hwang@qust.edu.cn 
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Abstract:
      High performance hydrogenated nitrile rubber （HNBR） was prepared by swelling nitrile rubber（NBR） latex with supercritical carbon dioxide （scCO2） and then hydrogenation，and its properties were studied.The results showed that the particle size of NBR latex could be increased by about 20% when the NBR latex was swelled in scCO2 medium，and the degree of hydrogenation of HNBR could reach 99% within 6 h under the new ruthenium based catalyst with 0.02% mass fraction.The gel content of HNBR prepared by scCO2 swelling hydrogenation was low，which was equivalent to the mainstream imported HNBR.ScCO2 swelling hydrogenated NBR had high selectivity，and the vulcanization characteristics，physical properties，hot aging resistance and oil resistance of the HNBR compound was comparable to mainstream imported HNBR compounds，and its elasticity and oil resistance was slightly better.
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