文章摘要
Influence of Vulcanization Temperature on Properties of NR/BR/TBIR Blend
Received:July 14, 2022  Revised:July 14, 2022
DOI：10.12136/j.issn.1000-890X.2024.01.0019
Key Words: NR；BR；TBIR；vulcanization temperature；compatibility；fatigue resistance
Author NameAffiliationE-mail
WANG Hao* Shandong Chambroad Holding Group Co.，Ltd； Shandong Huaju Polymer Materials Co.，Ltd
Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization 		kedawanghao@163.com 
LI Lange Shandong Huaju Polymer Materials Co.，Ltd；Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization  
WANG Riguo Shandong Huaju Polymer Materials Co.，Ltd；3. Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization  
LUAN Bo Shandong Chambroad Holding Group Co.，Ltd； Shandong Huaju Polymer Materials Co.，Ltd  
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Abstract:
      The influence of vulcanization temperature on the properties of natural rubber（NR）/cis- 1，4-polybutadiene rubber（BR）/trans-1，4-poly（butadiene-co-isoprene） rubber（TBIR） blend（blend ratio of 35/45/20） was investigated，and compared with that of NR/BR blend（blend ratio of 45/55）. The results showed that the flatness of the vulcanization curves of the NR/BR blends and NR/BR/TBIR blends decreased with the increase of the vulcanization temperature from 140 ℃ to 180 ℃，the t10 and t90 were significantly shortened，and the cross-linking density was reduced. The hardness and tensile stress at a given elongation of NR/BR blend and NR/BR/TBIR vulcanizates decreased，the elongation at break increased，the tear strength changed little，the rebound value decreased slightly，and the compression heat build-up increased slightly. TBIR could improve the compatibility and fatigue resistance of NR/BR blend significantly over a wide range of vulcanization temperatures.
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