文章摘要
Preparation and Properties of NR/TPI Blends
Received:May 19, 2022  Revised:May 19, 2022
DOI：10.12136/j.issn.1000-890X.2024.03.0183
Key Words: TPI；NR；microcrystalline structure；damping performance；fatigue resistance
Author NameAffiliationE-mail
ZHU Xinxin Qingdao University of Science and Technology 1471622302@qq.com 
XUAN Lujia Qingdao University of Science and Technology  
CUI Kaiwen Qingdao University of Science and Technology  
GUI Hongxing Rubber Research Institute，Chinese Academy of Tropical Agricultural Sciences  
WANG Hongzhen* Qingdao University of Science and Technology；Rubber Research Institute，Chinese Academy of Tropical Agricultural Sciences qustwhz@163. com 
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Abstract:
      The shock-absorbing product using natural rubber（NR）/trans-1，4-polyisoprene（TPI） blends were prepared，and the effects of natural TPI（Eucommia ulmoides rubber and Guttapo rubber） and synthetic TPI （grades TPI-28，TPI-58，TPI-80） on the properties of NR/TPI blends were studied.The results showed that the crystallinities of synthesized TPI were higher than those of natural TPI.The impacts of both synthetic TPI and natural TPI on the processing safety and vulcanization rates of NR/TPI compounds were minimal.Compared with NR vulcanizate，NR/TPI vulcanizates had higher Shore A hardnesses and moduli at 100% elongation，increased rebound values，reduced compression sets，improved damping performance，decreased dynamic heat generation，perfected heat resistance to air aging，significantly improved fatigue resistance，especially the number of times of six level flexural cracking fatigue and tensile fatigue of NR/TPI-28 vulcanizate were over one million and nearly two million respectively.NR/TPI-28 blend could significantly prolong the service life of shock-absorbing products.
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