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由青岛科技大学承担的国家“八六三”计划2005年主课题——万吨级高性能BR制备技术与轮胎应用评价项目获得200万元经费支持,该项目将使我国BR的生产和应用成本降低,在性能上也将实现新的突破。 相似文献
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纳米高岭土/橡胶复合材料的性能研究 总被引:3,自引:0,他引:3
研究纳米高岭土/橡胶(SBR,NR,BR和EPDM)复合材料的物理性能和热稳定性能,并用透射电子显微镜、X射线衍射、红外光谱和热重分析法对高岭土/橡胶复合材料进行分析。结果表明,与白炭黑/橡胶复合材料相比,纳米高岭土/橡胶复合材料回弹性、拉伸性能和热稳定性较好,撕裂强度和定伸应力稍差;高岭土片层厚度为纳米级、分散性良好、片状粒子与橡胶大分子在纳米尺度紧密结合以及纳米高岭土片层在橡胶基体中分离且定向平行排列,是复合材料具有优良物理性能和热稳定性的重要原因。 相似文献
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对炭黑填充轮胎胎面胶的动态力学性能进行研究.结果表明,炭黑品种对胎面胶玻璃化温度(Tg)的影响不大,但不同品种炭黑填充的胎面胶的损耗因子(tanδ)峰值却明显不同;炭黑N351填充胎面胶的滞后损失较小,冰、湿路面的抓着性能也较好;随着炭黑N351用量的增大,胎面胶的tanδ峰值逐渐降低,Tg向低温方向移动;在20~80℃范围内,炭黑N351用量对胎面胶的储能模量和滞后性能影响较大;当炭黑N351用量为75份时,胎面胶综合性能较好. 相似文献
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Rubber-grade carbon black filler HAF(N330) was modified with a plant product (PP; long aliphatic chain substituted phenols), a proprietary item under patent application, in the presence or absence of hexamine (Hexa) or dicumyl peroxide (DCP) to put a flexible moiety in between the carbon black and the elastomer chain in order to improve some of its processing and reinforcement characteristics in natural rubber (NR). The modification process is simple and involves cheap materials. The modified carbon black was characterized and evaluated for its processability as well as reinforcing characteristics in NR vulcanizate. It was observed to show better processing behavior, without any processing aid, such as easy incorporation and uniform dispersion in the rubber phase without abnormal heat generation, and also improved vulcanizate properties, such as tensile strength, flex cracking resistance, and lower abrasion loss, without affecting other properties to a significant extent. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 683–693, 1997 相似文献