文章摘要
Study on Influencing Factors of Shear Modulus of NR
Received:July 17, 2019  Revised:July 17, 2019
DOI：10.12136/j.issn.1000-890X.2020.09.0660
Key Words: NR；shear modulus；carbon black；sulfur；curing condition；gel mass fraction；crosslink density
Author NameAffiliationE-mail
LI Peng* Hengshui Railway Construction Rubber Co.，Ltd 634791253@qq.com 
JIA Leilei Hengshui Railway Construction Rubber Co.，Ltd  
ZHAO Xiaoyan Hengshui Railway Construction Rubber Co.，Ltd  
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Abstract:
      In this paper，the effects of carbon black dosage and particle size，sulfur dosage，curing time and curing pressure on the shear modulus of natural rubber（NR） were studied.The results showed that as the dosage of carbon black increased，the shear modulus of NR gradually increased.In the case of the same hardness，the NR reinforced by carbon black with larger particle size had larger carbon black gel mass and shear modulus.The shear modulus of NR increased as the crosslink density increasing.When the curing time was 60～90 min，the shear modulus of NR had a maximum value.As the curing pressure increasing，the shear modulus of NR increased.
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