文章摘要
Study on Properties of High-Temperature Resistant HNBR/ZDMA-HNBR Blends
Received:May 08, 2024  Revised:May 08, 2024
DOI：10.12136/j.issn.1000-890X.2026.05.0344
Key Words: hydrogenated nitrile butadiene rubber; zinc dimethacrylate; ionic crosslinking network; high-temperature mechanical properties; oil resistance
Author NameAffiliationE-mail
LI Xuesong 华南理工大学 材料科学与工程学院 msxsli@mail.scut.edu.cn 
LI Hongqiang 华南理工大学 材料科学与工程学院  
LAI Xuejun 华南理工大学 材料科学与工程学院  
LIU Yunchun 华南理工大学 材料科学与工程学院  
FANG Yuesheng 华南理工大学 材料科学与工程学院  
ZENG Xingrong* 华南理工大学 材料科学与工程学院 psxrzeng@scut.edu.cn 
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Abstract:
      Hydrogenated nitrile rubber（HNBR）and zinc dimethacrylate modified HNBR（ZDMA-HNBR） were used to prepare HNBR/ZDMA-HNBR blends.The crosslinking network structures and morphological structures of HNBR/ZDMA-HNBR blends were characterized using the equilibrium swelling method and scanning electron microscopy，and effects of ZDMA-HNBR amount on the vulcanization characteristics，mechanical properties and oil resistance of HNBR/ZDMA-HNBR blends were studied.The results showed that，compared with HNBR compound，HNBR/ZDMA-HNBR blend formed more ionic crosslinking networks，and increased total crosslinking density.ZDMA-HNBR was uniformly dispersed in HNBR，and effectively improved the high-temperature（130 ℃） mechanical properties and oil resistance of the blend.When ZDMA-HNBR amount was 30 phr，the high-temperature tensile strength of HNBR/ZDMA-HNBR blend reached 14.1 MPa，which was 42.4% higher than that of HNBR compound. After immersion in IRM 903 oil（23 ℃×168 h），the high-temperature tensile strength of HNBR/ZDMA-HNBR blend still reached 13.0 MPa，which was 49.4% higher than that of HNBR compound.
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