| 硫化时间对绿色轮胎胎面胶交联网络结构与性能的影响 |
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| 引用本文： | 蔡 磊,宗 鑫,张新萍,贺爱华.硫化时间对绿色轮胎胎面胶交联网络结构与性能的影响[J].橡胶工业,2021,68(2):0119-0127. |
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| 作者姓名： | 蔡 磊 宗 鑫 张新萍 贺爱华 |
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| 作者单位： | 山东省烯烃催化与聚合重点实验室,山东省烯烃催化与聚合重点实验室,山东省烯烃催化与聚合重点实验室,山东省烯烃催化与聚合重点实验室 |
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| 基金项目： | 国家重点基础研究发展计划（2015CB654700）；山东省自然科学基金资助项目（ZR2017ZA0304）；“泰山学者”建设工程专项经费资助项目 |
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| 摘 要： | 针对以溶聚丁苯橡胶(SSBR)/顺丁橡胶(BR)并用胶为主体材料的绿色轮胎胎面胶,研究在不同硫化时间下未填充白炭黑的SSBR/BR并用胶(简称未填充白炭黑体系胶料)及填充白炭黑的SSBR/BR并用胶(简称填充白炭黑体系胶料)形成的交联网络结构与性能变化。结果表明:对于未填充白炭黑体系胶料,随着硫化时间的延长,硫化胶的交联密度略有降低,硬度、定伸应力、拉伸强度和回弹值等变化不大,撕裂强度提高,拉断伸长率和耐伸张疲劳性能降低;对于填充白炭黑体系胶料,随着硫化时间的延长,硫化胶的填料网络结构化程度逐渐提高,交联密度略有增大,键能较低的多硫键减少,键能较高的单硫和双硫键增多,硫化胶的拉伸强度、回弹值、耐伸张疲劳性能和耐磨性能基本不变,生热和滚动阻力降低;未填充及填充白炭黑体系硫化胶的耐老化性能均随硫化时间的延长而逐渐提高,这表明以SSBR/BR并用胶为主体材料的胎面胶即使在高温下硫化较长时间,仍具有较好的性能。
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| 关 键 词： | 硫化时间 白炭黑 溶聚丁苯橡胶 顺丁橡胶 胎面胶 交联网络结构 抗湿滑性能 滚动阻力 |
| 收稿时间： | 2020/3/1 0:00:00 |
| 修稿时间： | 2020/3/1 0:00:00 |
Effect of Curing Time on Crosslinking Network Structures and Properties of Tread Compound of Green Tire |
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| CAI Lei,ZONG Xin,ZHANG Xinping,HE Aihua.Effect of Curing Time on Crosslinking Network Structures and Properties of Tread Compound of Green Tire[J].China Rubber Industry,2021,68(2):0119-0127. |
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| Authors: | CAI Lei ZONG Xin ZHANG Xinping HE Aihua |
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| Affiliation: | Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization,Key Laboratory of Rubber-plastics Ministry of Education,School of Polymer Science and Engineering,Qingdao University of Science and Technology,Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization,Key Laboratory of Rubber-plastics Ministry of Education,School of Polymer Science and Engineering,Qingdao University of Science and Technology,Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization,Key Laboratory of Rubber-plastics Ministry of Education,School of Polymer Science and Engineering,Qingdao University of Science and Technology,Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization,Key Laboratory of Rubber-plastics Ministry of Education,School of Polymer Science and Engineering,Qingdao University of Science and Technology |
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| Abstract: | For the green tire tread compound with solution polymerized styrene-butadiene rubber(SSBR)/butadiene rubber(BR)blend as the main material,the changes of the crosslinking network structure and physical properties of the SSBR/BR blend without silica(referred to as the compound unfilled with silica)and the silica filled SSBR/BR blend(referred to as the compound filled with silica)under different curing time were studied.The results showed that,for the compound unfilled with silica,with the extension of the curing time,the crosslinking density of the vulcanizates decreased slightly,the hardness,modulus,tensile strength and rebound value changed little,the tear strength was improved,and the elongation at break and tensile fatigue property were reduced.For the compound filled with silica,with the extension of the curing time,the filler network structure of the vulcanizates gradually increased,the crosslinking density were slightly improved,the number of the polysulfide bonds with lower bond energy decreased,the number of the mono-and di-sulfur bonds with higher bond energy increased,the tensile strength,rebound value,tensile fatigue property and wear resistance were basically unchanged,and the heat build-up and rolling resistance were reduced.The aging resistance of the vulcanizates filled and unfilled with silica were both improved with the extension of curing time,which showed that the tread compound with SSBR/BR blend as the main material had better properties even though it was cured at high temperature for a long time. |
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| Keywords: | curing time silica SSBR BR tread compound crosslinking network structure wet skid resistance rolling resistance |
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