共查询到19条相似文献,搜索用时 156 毫秒
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TPI/HVBR/SBR共混物的性能 总被引:4,自引:6,他引:4
对高反式-1,4-聚异戊二烯(TPI)/高乙烯基聚丁二烯橡胶(HVBR)/SBR共混物的综合物理性能和动态力学性能进行研究。结果表明,共混物中TPI/HVBR/SBR并用比为10/20/70时,共混物具有较低的滚动阻力和动态生热及优异的耐屈挠疲劳性和耐磨性,与TPI/SBR(并用比为30/70)比较,其抗湿滑性提高(0℃时的tanδ值增大76.3%)。在SBR用量为70-50份,TPI用量为15-25份和HVBR用量为15-35份范围内,共混物具有良好的综合性能,滚动阻力和抗湿滑性获得平衡,同时具有优异的耐磨性和耐屈挠疲劳性,是高性能胎面胶料的较理想配合。 相似文献
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TPI/HVBR/NR共混物的性能 总被引:2,自引:3,他引:2
对高反式-1,4-聚异戊二烯(TPI)/高乙烯基聚丁二烯橡胶(HVBR)/NR共混物的综合物理性能和动态力学性能进行研究。结果表明,在TPI/HVBR/NR共混物中,NR用量为70份,HVBR用量为10~20份,可使胶料具有较低的滚动阻力和生热,且胶料的抗湿滑性明显改善。当HVBR用量为20份时,表征胶料抗湿滑性能的0℃时的tanδ值提高42.2%,而表征滚动阻力和生热的60和80℃时的tanδ值进一步降低;NR用量为70~50份,TPI用量为10~25份和HVBR用量为20~35份的TPI/HVBR/NR共混物不仅具有较好的综合物理性能,而且具有较低滚动阻力和较高抗湿滑性,是一种较为理想的胎面胶配合。 相似文献
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研究了高反式-1,4-聚异戊二烯(TPI)/高乙烯基聚丁二烯橡胶(HVBR)共混物的性能,特别是其滚动阻力、生热和抗湿滑性的平衡问题,试验结果表明,通过并用HVBR,可以大大改善TPI的抗湿滑性。与TPI比较,TPI/HVBR并用比为60/40时,0℃时的tanδ值增大了近3倍,并用比为40/60时的tanδ值增大了7倍。TPI/HVBR在60和80℃时的tanδ值低于TPI,较好地解决了TPI使用过程中滚动阻力,生热和抗湿滑性的平衡问题。并用比适当的TPI/HVBR共混物具有较好的综合性能。适当配合的TPI/HVBR共混物在物理性能上还具有一定的互补作用。 相似文献
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研究反式丁戊橡胶(TBIR)对天然橡胶(NR)/丁苯橡胶(SBR)并用胶性能的影响。结果表明:用15份TBIR替代NR,NR/SBR/TBIR并用胶的NR与SBR相容性改善,拉伸强度和定伸应力略有降低,耐磨性能、耐压缩疲劳性能和耐屈挠疲劳性能提高;用15份TBIR替代SBR,NR/SBR/TBIR并用胶的NR与SBR相容性明显改善,拉伸性能变化不大,耐磨性能、耐压缩疲劳性能和耐屈挠疲劳性能提高;用15份TBIR替代NR/SBR并用胶,NR/SBR/TBIR并用胶的大部分性能介于TBIR单独替代NR与SBR并用胶的性能之间,抗湿滑性能提高,滚动阻力降低;在NR/SBR并用胶中直接加入6份TBIR,NR/SBR/TBIR并用胶的NR与SBR相容性改善,耐磨性能、耐压缩疲劳性能和耐屈挠疲劳性能提高,抗湿滑性能和滚动阻力降低。 相似文献
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炭黑填充NR和S—SBR硫化胶动态性能及屈挠破坏性的研究 总被引:1,自引:0,他引:1
探讨炭黑种类及用量对天然橡胶(NR)和溶聚丁苯橡胶(S—SBR)硫化胶的耐屈挠破坏性及动态力学性能的影响。结果表明,随着炭黑N234、N330用量的增大,NR和S—SBR两种硫化胶的耐屈挠破坏性降低;随炭黑粒径增大,炭黑用量对两种硫化胶的耐疲劳破坏性的影响逐渐减小;NR硫化胶的耐初始疲劳破坏性明显优于S—SBR硫化胶,随屈挠次数的增加,两者间的差距逐渐减小。炭黑用量增加,NR和S—SBR硫化胶的损耗因子峰值(tanδmax)减小,高于10℃时(高弹态)的tanδ值增大,S—SBR较NR具有更好的抗湿滑性和相差无几的低滚动阻力。炭黑粒径减小,NR和S—SBR硫化胶的tanδmax减小,填充30质量份炭黑时,N660增强的两种硫化胶在0℃时tanδ值较高,60℃时最低,具有较好的动态性能。 相似文献
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对掺用反式1,4聚异戊二烯(TPI)的胎面和胎侧胶料进行了试验。试验结果表明,含TPI的胶料具有良好的包辊性和毛细管流变性;硫化诱导期和焦烧时间稍有延长,这更有利于安全加工。因此,用少量(如20份)TPI替代NR制备胎面和胎侧胶从加工工艺角度考虑是可行的,无需改变现行轮胎生产设备和工艺配方。掺用TPI的胶料较不用者定伸应力提高,滚动阻力和压缩生热降低,耐疲劳性能优异,磨耗和干湿路面摩擦因数保持较高水平,即轮胎三大行驶性能间有较好的综合平衡。 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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Jineesh Ayippadath Gopi Sanjay Kumar Patel Arup Kumar Chandra Deba Kumar Tripathy 《Journal of Polymer Research》2011,18(6):1625-1634
Styrene butadiene rubber-organoclay nanocomposites were prepared with Cloisite 15A via melt intercalation. X-ray diffraction
and transmission electron microscopy indicated that the nanostructures are partially exfoliated and intercalated. The nanocomposites
exhibited great improvements in tensile strength and tensile modulus. The incorporation of organoclay gave rise to considerable
reduction of tan delta and increase in storage modulus in the rubbery region. It is shown that after 6 phr (parts per hundred
rubber) clay loading there is not much increase in the properties. The effect of carbon black (N330) on mechanical properties,
dynamic mechanical properties, heat build up, abrasion resistance in the nanocomposites having the optimized clay level (6
phr) was investigated. Optimum results were obtained with the addition of 25 phr carbon black. For comparison with the 6phr
nanoclay and 25phr N330 (high abrasion furnace carbon black) filled SBR composites, 40 phr N330 filled SBR composites was
used. The 6phr organoclay and 25phr N330 filled SBR nanocomposite showed better properties than 40phr carbon filled SBR compound.
These results indicate that 6phr organoclay can be replaced by 15 phr carbon black from the conventional SBR-carbon black
based tire tread compounds. The Dynamic mechanical analyzer (DMA) results revealed that the new tire tread compound gives
better rolling resistance and comparable wet grip resistance and lower heat build up than that of conventional tread compound. 相似文献
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低滚动阻力轮胎胎面胶的研究 总被引:4,自引:4,他引:0
采用正交试验方法 ,对胶料各组分进行优化 ,使胎面胶滚动阻力降低 ,同时又能保持良好的抗湿滑性能。试验结果表明 ,用溶聚丁苯橡胶替代乳聚丁苯橡胶和用白炭黑部分替代炭黑可以有效降低胎面胶的滚动阻力 ;填料总用量和芳烃油用量是影响滚动阻力和抗湿滑性能的最主要因素。 相似文献
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研究超细全硫化粉末丁苯橡胶(UFPSBR)对天然橡胶(NR)/丁苯橡胶/顺丁橡胶(BR)胎面胶性能的影响。结果表明:与未加UFPSBR的胎面胶相比,加入2~3份UFPSBR的NR/溶聚丁苯橡胶/BR胎面胶拉伸强度略有减小,耐磨性能和抗湿滑性能提高,生热降低;加入1~2份UFPSBR的NR/乳聚丁苯橡胶/BR胎面胶拉伸强度增大,抗湿滑性能略有提高,滚动阻力变化不大,耐磨性能下降。 相似文献
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A new technology to synthesize trans-1,4-polyisoprene (TPI) with bulk precipitation polymerization in the presence of a supported Ti catalysts was introduced. The termination of polymerization, stabilization of the polymer, and the adjustment of the molecular weight of TPI and its quality index are discussed. The blending and covulcanization of TPI with natural rubber (NR), styrene butadiene rubber (SBR), and butadiene rubber (BR) were studied. The blending compounds had outstanding dynamic mechanical properties, especially the rolling resistance, heat buildup, and wet skid resistance. Tread and sidewall compounds that contained TPI had a higher modulus, longer fatigue life, better abrasion resistance, lower rolling resistance, and lower buildup, which indicates that TPI is suitable for high-performance tire. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 81–89, 2001 相似文献