文章摘要
Relationship between Crosslinking Density and Crystallinity of NR/EUG Blend and Their Effects on Properties
Received:October 06, 2021  Revised:October 06, 2021
DOI：10.12136/j.issn.1000-890X.2023.03.0163
Key Words: NR；EUG；sulfur；crosslinking density；crystallinity；wear resistance；flexural resistance； dynamic mechanical property
Author NameAffiliationE-mail
XU Zhiyu Shenyang University of Chemical Technology xuzhiyu1996@163.com 
KANG Hailan Shenyang University of Chemical Technology  
LI Donghan Shenyang University of Chemical Technology  
LI Zhengying Shenyang University of Chemical Technology  
FANG Qinghong* Shenyang University of Chemical Technology fqh80@126.com 
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Abstract:
      The relationship between the crosslinking density and crystallinity of natural rubber（NR）/ eucommia ulmoides rubber（EUG） blend and their influence on the properties of the blend were studied by adjusting the sulfur dosage. The results showed that the crosslinking density of NR/EUG blend was negatively correlated with the crystallinity. With the increase of sulfur dosage，the crosslinking density of NR/EUG blend was increased，thet10 was slightly shortened，the t90 changed little，the hardness，flexural resistance and wet skid resistance increased at first and then decreased，the rolling resistance and heat buildup decreased，and the fluctuation of the storage modulus decreased. When the sulfur dosage was 2～2. 5 phr， the crosslinking density and crystallinity of NR/EUG blend were larger，and the physical properties，wear resistance and wet skid resistance were better.
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