期刊
RADIATION PHYSICS AND CHEMISTRY
卷 92, 期 -, 页码 99-104出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2013.07.022
关键词
Electron beam; NR/SBR; Rolling resistance; Wet skid resistance; Abrasion resistance
资金
- Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) [IRT0807]
- National Natural Science Foundation of China [51073008, 51103005]
- Fundamental Research Funds for the Central Universities in China
A natural rubber/styrene butadiene rubber (NR/SBR) vulcanizate filled with carbon black was modified by high-energy electron beam (EB) irradiation in this work. The crosslinked structure was studied by a special chemical probe method. The influence of EB irradiation on mechanical properties, filler network, and dynamic properties including abrasion resistance, rolling resistance, and wet skid resistance was also investigated. The results revealed that the crosslink structure significantly changed after EB treatment, indicating that the amount of poly- and di-sulfide crosslinked bonds decreased and that of mono-sulfide bonds increased. The polymer-filler interaction was enhanced after EB irradiation. An EB dose of 600 kGy reduced the abrasion loss of the NR/SBR vulcanizate, and one of 300 kGy reduced the rolling resistance by 11.4%. Meanwhile, EB doses below 200 kGy had no obvious effect on the wet skid resistance. This EB-modified NR/SBR vulcanizate can be used to prepare high-performance tires with good abrasion resistance and low rolling resistance. (C) 2013 Elsevier Ltd. All rights reserved.
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