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粘合树脂A250在子午线轮胎带束层胶中的应用 总被引:1,自引:0,他引:1
试验研究以粘合树脂A250替代间苯二酚在子午线轮胎带束层胶中的应用效果.结果表明,在子午线轮胎带束层胶配方中,采用2.5份粘合树脂A250替代1.5份间苯二酚,并采用快速促进剂NS,减小癸酸钴用量,胶料的加工安全性提高,硫化速度降低不明显;硫化胶各项物理性能变化不大,热空气老化后的撕裂强度明显提高,老化后胶料与钢丝帘线的粘合性能保持较高水平. 相似文献
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研究纳米氧化锌在全钢子午线轮胎带束层胶中的应用。结果表明:在全钢子午线轮胎带束层胶配方中,使用一定量的纳米氧化锌减量替代普通氧化锌,不仅可以改善胶料的强力,提高胶料的耐老化性能,而且可以提高胶料的粘合性能,降低生热;使用2份纳米氧化锌替代5.5份普通氧化锌时效果最佳。 相似文献
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研究抗疲劳剂PA-600在全钢载重子午线轮胎带束层胶中的应用。结果表明,在全钢载重子午线轮胎带束层胶中加入抗疲劳剂PA-600,炭黑在胶料中的分散性改善,胶料的H抽出力明显增大,成品轮胎带束层与胎面和胎体间的粘合性能和轮胎耐久性能提高,轮胎肩空现象有效减少。 相似文献
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全钢载重子午线轮胎胎肩垫胶配方的优化设计 总被引:1,自引:1,他引:0
对全钢载重子午线轮胎胎肩垫胶配方进行优化设计.结果表明,通过减少炭黑用量,加入白炭黑和硅烷偶联剂,不使用增粘树脂,试验胶料的定伸应力提高,对降低胶料的动态和压缩生热有良好作用;配方中使用抗硫化返原剂Perkalink 900,可明显提高胶料抗热降解性能;采用试验胶料试制的成品轮胎耐久性能较好. 相似文献
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The effects of mixing temperature and mixing time on the reaction of 3‐octanoylthio‐1‐propyltriethoxysilane (NXT silane) during mixing with precipitated silica and natural rubber (NR) were investigated. Results showed that the reaction between NXT silane and precipitated silica can proceed at temperatures above 130°C. Because of the blocking group of NXT silane, the silane–NR coupling reactivity is low, so that the reaction of NXT silane with NR occurs only during the curing period. There is no reaction between NXT silane and NR during mixing, which showed that the mixing time of silica‐filled NR compound containing NXT silane must be longer than 10 min at 150°C to obtain the desired silane coupling efficiency. With increasing mill temperature, the coupling efficiency increases. A high mixing temperature promotes improvement of silane–silica coupling efficiency, although the tensile strength, 100% modulus, 300% modulus, and hardness of NR vulcanizates decrease. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 2295–2301, 2004 相似文献
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研究了硅烷偶联剂在填充白炭黑斜交轮胎胎面胶中的应用,试验结果表明,在填充白炭黑的胎面胶中加入偶联剂Si69,可以降低胶料的粘度,缩短焦烧时间和正硫化时间,增大硫化胶的邵尔A型硬度和300%定伸应力;采用三段混炼可以改善胶料的挤出工艺性能和胎面挤出尺寸稳定性。 相似文献
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介绍充气轮胎轮辋实心轮胎胎面胶和基部胶配方的研制情况,生胶体系选用NR和SBR,补强体系选用炭黑和白炭黑配合使用,并添加偶联剂Si69等。结果表明,成品轮胎的物理性能满足国家标准要求,产品实际使用性能良好。 相似文献
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The vulcanization characteristics of silica‐filled natural rubber (NR) were studied in the presence of silane coupling agents, 3‐octanoylthio‐1‐propyltriethoxysilane (NXT) and bis [(3‐triethoxysilylpropyl) tetra sulfide] (TESPT, or Si‐69). The scorch time, cure rate index, and the rate constant of NR were measured using an Oscillating Disk Rheometer in the temperature range of 140–170°C. The scorch time of NR decreases with increasing TESPT and NXT concentrations, and the scorch time of NR compound with NXT is longer than that with TESPT. The apparent activation energies of vulcanization for the compounds with NXT and TESPT both decrease with increasing silane concentration. The apparent activation energy of vulcanization of NR compound with NXT is lower than that with TESPT at various concentrations. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1511–1518, 2004 相似文献
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试验研究丁苯橡胶(SBR)1739在绿色环保轿车子午线轮胎胎面胶中的应用。结果表明:在胎面胶配方中用SBR1739等量替代SBR1723,并调整炭黑/白炭黑并用比以及硅烷偶联剂和促进剂的用量,胶料的门尼粘度增大,300%定伸应力提高,拉断伸长率降低,压缩生热和滚动阻力大幅降低,其他物理性能变化不大;0℃下损耗因子(tanδ)增大,而60℃下tanδ减小,符合绿色环保轮胎胎面胶的性能要求。试制的205/60R15 91V轿车子午线轮胎强度、耐久和高速性能良好,湿牵引性能和操控性能极佳,油耗低。 相似文献