| Study on Method of Dynamic Energy Loss of Tread Compound and Its Correlation with Loss Factor |
| Received:April 21, 2021 Revised:April 21, 2021 |
| DOI：10.12136/j.issn.1000-890X.2021.12.0937 |
| Key Words: tread compound；dynamic energy loss；rotary rheometer；rubber processing analyzer；compression heat generation tester；rebound instrument；loss factor；rolling resistance |
| Author Name | Affiliation | E-mail | | WANG Baojin* | EVE Rubber Research Institute Co.，Ltd | wangbj@everi.com.cn | | CHANG Shuangkai | EVE Rubber Research Institute Co.，Ltd | | | ZHANG Lin | EVE Rubber Research Institute Co.，Ltd | | | ZHOU Hongbin | EVE Rubber Research Institute Co.，Ltd | |
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| Abstract: |
| The dynamic energy loss of tread compound was measured by rotary rheometer，rubber
processing analyzer，compression heat build-up tester and rebound instrument．Based on the three factors of
strain，stress and energy，a simple mathematical strain/stress-time model of each test method was established，
and the relevance of dynamic energy loss and loss factor（tanδ） of tread compound was discussed．The results
showed that，both rotary rheometer and rubber processing analyzer provided constant strain tests，and the tanδ
of the tread compound measured by these two methods had a good correlation．The compression heat build-up
tester provided a constant stress test．Under this condition，the dynamic energy loss of the tread compound was
proportional to tanδ and inversely proportional to modulus．The rebound instrument provided a near constant
energy test，and the dynamic energy loss of the tread compound was proportional to tanδ．In addition，the rolling
resistance index of the tire showed a good linear correlation with the tanδ of the tread compound． |
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