| Optimization of Specialized NR for Heavy-Duty Truck Tires |
| Received:December 16, 2024 Revised:December 16, 2024 |
| DOI：10.12136/j.issn.1000-890X.2026.08.0580 |
| Key Words: heavy-duty truck tire；NR；process；vulcanization characteristic；mechanical property |
| Author Name | Affiliation | E-mail | | NIU Manjiang | Qingdao University of Science and Technology | manjiang0505@163.com | | CUI Jiyuan | Qingdao University of Science and Technology | | | TANG Hailong | Hainan Natural Rubber Industry Group Co.，Ltd | | | WANG Hongzhen* | Qingdao University of Science and Technology | qustwhz@163.com |
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| Abstract: |
| The optimization of specialized natural rubber（NR） for heavy-duty truck tires was studied.The novel enzyme coagulation processes were used to prepare NR，namely enzyme coagulation＋
granulation＋low temperature drying process was used to prepare NR（M） and enzyme coagulation＋
granulation＋twin screw extrusioner dewatering process was used to prepare NR（J）.The test
results showed that，compared with NR（SCRWF and SCR20） prepared by traditional acid coagulation process，the t90 of M compound was the shortest，the carbon black dispersion of M vulcanizate was the best，the modulus at 300% elongation and tensile strength were the maximum，the Akron and DIN abrasion losses were the minimum，compression temperture rise was lower，flex resistance and thermo-oxidative aging resistance were the optimum，the tanδ of M vulcanizate at 0 °C was the maximum，indicating superior wet skid resistance.M was more suitable for using as production rubber for heavy-duty truck tires. |
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