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《合成材料老化与应用》2012,(6):51-51
本发明涉及轮胎材料技术领域,尤其是耐切割的轮胎胎面橡胶配方。耐切割轮胎胎面橡胶配方,它包含有天然橡胶、中超耐磨炭黑、白碳黑、氧化锌与硬脂酸、防老化物质、尼龙短纤维特别粘合物质、 相似文献
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研究溶聚丁苯橡胶(SSBR)在载重轮胎抗湿滑胎面配方中的应用。结果表明:在胎面配方中,随着SSBR等量替换天然橡胶(NR)的用量提高,胶料的300%定伸应力和拉伸强度下降,t90下降,焦烧时间延长,撕裂强度下降,耐磨性下降,生热提高,损耗因子tanδ提高;当天然橡胶(NR)/溶聚丁苯橡胶(SSBR)并用比为70/30时,硫化胶的物理性能、动态性能和抗湿滑性能好,适用于载重轮胎胎面。 相似文献
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利用天然橡胶(NR)与环氧化天然橡胶(ENR)良好的相容性,以及不同环氧化程度的ENR的玻璃化温度(Tg)梯度差异,选用NR和3种不同环氧化程度的ENR(ENR-25,环氧化程度为25%;ERN-40,环氧化程度为40%;ENR-50,环氧化程度为50%)制得NR/ENR-25/ENR-40/ENR-50四元并用阻尼材料,研究由于NR和各ENR的Tg和用量差异产生的阻尼加和效应对并用胶在室温及以上温度的阻尼温域的拓宽情况。结果表明,当NR/ENR-25/ENR-40/ENR-50并用比为55/5/15/25,同时添加40份炭黑N330时,四元并用胶具有较好的综合性能,其有效阻尼温域(损耗因子大于0.3)为66℃(-15.3~50.7℃),拉伸强度可达17.2 MPa,拉断伸长率为571%。 相似文献
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选用轮胎胎面配方中常用的天然橡胶和丁苯橡胶,用常硫体系和有效硫化体系制备硫化胶并对其粒径分布,表面形态结构,内部结构网络等进行了探讨。 相似文献
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研究环氧化天然橡胶(ENR)在全钢载重子午线轮胎胎面胶中的应用。结果表明:用ENR部分取代天然橡胶(NR),胶料的门尼粘度增大,焦烧时间延长,强伸性能略有下降,抗湿滑性能显著改善,耐磨陛能提高,压缩生热略有升高。 相似文献
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The effects of epoxidized natural rubber (ENR) as a compatibilizer, silane in situ modification, and filler hybrid on the properties of natural rubber/acrylonitrile–butadiene rubber blends were systematically studied. Phase change with the incorporation of ENR was quantitatively characterized via atomic force microscope quantitative nanomechanics technique. The results show that ENR could greatly reduce the dispersed domain size and increase the interfacial thickness; however, this compatibilizing effect reached the limit when ENR content was 5 parts per hundred rubber (phr). If the content is further increased, the redundant ENR start to gather at the interface and thus form a third phase. The macroscopic dynamic performance measurement was well in accordance with the microscale observation; the blend with 5 phr of ENR presented the lowest heat generation. The results also revealed that silane modification could significantly improve the overall properties, which benefited from better filler dispersal as evidenced by transmission electron microscopy. Finally, the effect of filler hybrid [silica and carbon black (CB)] was studied. It turned out that the blend containing 20 phr silica and 32 phr CB synchronously possessed high wet grip property, low rolling resistance, and high wear resistance, which makes it very promising for the high-performance tire application. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47421. 相似文献
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研究生物凝固天然橡胶(NR-B)在子午线轮胎中的应用,并与马来西亚20#标准胶(SMR20)进行对比。结果表明:与SMR20相比,NR-B的塑性初值和塑性保持率较高,纯胶配方硫化胶拉伸强度较大,定伸应力较小;采用NR-B的胎面胶、基部胶、胎肩垫胶和粘合胶拉伸强度、拉断伸长率和撕裂强度等关键性能均与采用SMR20的硫化胶相当,但采用NR-B的胶料普遍存在ML偏高的现象。成品轮胎性能测试结果表明,采用NR-B的轮胎高速性能和耐久性能与采用SMR20的轮胎相当,耐磨性能差别不大。 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
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In this article, we provide an extensive analyses of various properties that are required for tire tread based on developed highly dispersible (HD) silica‐filled epoxidized natural rubber composites. Silica in an HD form has become a staple filler in tire tread applications because of its inherent advantages. In this study, epoxidized natural rubber with 25 mol % epoxide (ENR 25) and natural rubber were mixed with two different types of HD silica for superior reinforcement. A standard tire tread formulation was used as the base compound. The magic triangle properties were conspicuously influenced by the viscoelastic characteristics of the vulcanizates. The introduction of polar rubber (ENR 25) into the HD silica greatly improved rheological, physicomechanical, bound rubber content, and dynamic mechanical properties, and this led to a better, fuel‐efficient tire. We successfully achieved this, even in the absence of a silane coupling agent. ENR 25 played an imperative role in showing an extraordinary rubber–filler interactions and was primarily responsible for these observations. In this study, we explored the HD silica dispersion with transmission electron microscopy observations. Morphological studies revealed well‐dispersed HD silica with the formation of a rubber–filler network. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43531. 相似文献
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